Cristina Isolan | Universidade Federal de Pelotas (UFPel) (original) (raw)

Papers by Cristina Isolan

International Journal of Dentistry, Aug 15, 2018

Herein, the effect of different post-pressing times and pressure in two cycles of polymerization ... more Herein, the effect of different post-pressing times and pressure in two cycles of polymerization on the degree of conversion (DC) of thermally activated acrylic resin (TRRA) is analyzed to optimize the polymerization of this material. After postpressing for 0, 6, or 12 h, polymerization was performed with or without a pressure of 60 psi (0.41 MPa) in a short (4 h) or a long (11 h) cycle, totaling 12 groups. To determine the DC, PMMA specimens were analyzed by Fourier transform infrared spectroscopy. e influence of each factor alone on the DC was studied by experimental planning. e statistical tests used were three-way ANOVA, t-test, Tukey's test, and Levene's test, with a margin of error of 5%. Two groups prepared with post-pressing times of 12 h had the lowest DC (p < 0.001). Post-pressing times of 0 and 6 h did not yield statistically different results. Pressure increased the DC in only one group (long cycle +12 h, p � 0.001). e short cycle resulted in a higher DC than the long cycle in 2 groups (with pressure +0 h, p � 0.002; without pressure +6 h, p � 0.015), while the long cycle yielded a statistically higher DC in only one group (with pressure +12 h, p < 0.001). e polymerization showed satisfactory DC in all 12 groups. Small differences found among the specimens indicate that the pressure, post-pressing time, and polymerization cycles herein were not influential factors for the DC of PMMA.

Base de dados : BBO. Pesquisa : 24576 [Identificador único]. Referências encontradas : 1 [refinar... more Base de dados : BBO. Pesquisa : 24576 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, BBO, seleciona. para imprimir. Fotocópia. Id: 24576. Autor: Guimarães ...

Medicina Oral Patología Oral y Cirugia Bucal, 2021

Background: To assess the efficacy of PBMT on reducing postoperative pain scores in patients subm... more Background: To assess the efficacy of PBMT on reducing postoperative pain scores in patients submitted to third molar extractions. Material and Methods: A randomized controlled trial (ReBEC:RBR-94BCKZ) was designed according to the SPIRIT and followed the CONSORT. Patients were randomly allocated according to control or PBMT groups. PBMT consisted of the application of GaAlAs laser (808nm;50mW) applied in six points (1.23 min;11 J/cm2) after extraction. Pain scores were assessed using the Visual Analogue Scale (VAS) in millimeters evaluated after 6 (T6), 24 (T24), and 48 (T48) hours. The Wilcoxon Mann-Whitney test was used to check for possible associations between VAS scores and treatment groups. Results: A total of 101 third molar extractions were performed in 44 patients. The mean age was 28 years old(SD±11.54). Comparing control and intervention, PBMT group showed a significant effect on the reduction of postoperative pain at T6(mean VAS=0.9; C.I:0.63-1.16) compared to control (mean VAS=2.5;C.I:2.1-2.88) (p<0.001). The same statistically significant effect on the reduction of postoperative pain was observed at T24 (PBMT mean VAS=0.72;C.I:0.51-0.93; control mean VAS=2.86;C.I:2.40-3.31;p<0.001) and T48 (PBMT mean VAS=0.64;C.I:0.36-0.92; control mean VAS=2.86;C.I:2.37-3.34;p<0.001). Conclusions: PBMT significantly reduce the postoperative pain scores when assessed 6, 24, and 48 hours after third molar extractions.

Archives of Health Investigation, 2017

O objetivo deste trabalho foi analisar o efeito do tempo de pos-prensagem (0 horas, 6 horas e 12 ... more O objetivo deste trabalho foi analisar o efeito do tempo de pos-prensagem (0 horas, 6 horas e 12 horas) e uso de pressao (com pressao/ sem pressao) em dois ciclos de polimerizacao (curto 4h/ longo 11h) sobre o grau de conversao de resinas acrilicas ativadas termicamente (RAAT). Foram confeccionados 72 corpos de prova de RAAT e divididos em 12 grupos. Apos o processo de polimerizacao os corpos de prova foram pulverizados e submetidos a analise do grau de conversao, atraves da espectroscopia de infravermelho por transformadas de Fourier (FTIR). Os dados foram tabulados em planilha de Excel e submetido aos testes estatisticos ANOVA tres fatores; t-Student; Tukey e F de Levene, com margem de erro 5%. Para tempo de pos-prensagem as medias foram correspondentemente menores com 12 horas de prensagem, exceto para ciclo longo com pressao. As unicas diferencas significativas entre a presenca ou ausencia de pressao ocorreu no ciclo longo com 0 horas (p=0,001) e com 12 horas de prensagem (p=0,0...

Editora Científica Digital eBooks, 2023

Journal of Prosthetic Dentistry, Dec 1, 2019

Feldspathic ceramics are commonly used for laminate veneer restorations because of the excellent ... more Feldspathic ceramics are commonly used for laminate veneer restorations because of the excellent optical properties 1 associated with their high vitreous phase content. 2-4 The clinical success, longevity, and strengthening of thin feldspathic ceramic restorations are linked to the luting procedures 5-8 and the achievement of an adequate bonded interface between the ceramic and resin-based luting agent (RBLA). 6 The quality of the bonded interface and the mechanical strength of feldspathic ceramic have been associated with the modulus of elasticity (E) 7-9 and the particle size of filler content in RBLAs. 8 However, evidence on the effect that the filler content of RBLAs may have on the performance of bonded veneers is lacking. Inorganic filler content affects the viscosity (h) of RBLAs 10,11 and thus may interfere with This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil (Finance Code 001). F.J.B. thanks CAPES/Brazil for a scholarship.

Periodontia, 2015

Prevotella intermedia e um microrganismo anaerobio Gram negativo, considerado um dos agentes etio... more Prevotella intermedia e um microrganismo anaerobio Gram negativo, considerado um dos agentes etiologicos de doencas periodontais. Tendo em vista que o biofilme subgengival e um dos seus principais habitats, qualquer quebra na homeostase do meio pode favorecer seu desenvolvimento e consequente dano aos tecidos atingidos. Diversas pesquisas vem sendo realizadas a fim de identificar o papel deste microrganismo nas doencas periodontais. Assim, este trabalho teve por objetivo revisar a literatura para coletar informacoes sobre as caracteristicas e efeitos de Prevotella intermedia no contexto saude-doenca periodontal. A busca foi realizada nas bases de dados PubMed e Lilacs, bem como atraves de uma busca aleatoria. De um total de 47 artigos incluidos, alguns principais resultados puderam ser destacados: Prevotella intermedia esta fortemente associada ao quadro de doencas periodontais e suas caracteristicas favorecem o acometimento e intensificacao de doencas diversas. Alem disso, este microrganismo e capaz de produzir pigmentos e uma variedade de enzimas as quais favorecem danos aos tecidos periodontais. Existem varias caracteristicas que aumentam a patogenicidade e virulencia deste microrganismo, como por exemplos a sua capsula polissacaridica, a presenca de enzimas protetoras contra o oxigenio, a presenca e producao de proteases, alem da estimulacao de fatores de crescimento no hospedeiro. Nao ha consenso na literatura acerca da relacao de causa-efeito entre presenca de Prevotella intermedia e diabetes. Contudo, este microrganismo parece estar envolvido no quadro de pacientes HIV positivo. Por fim, e importante salientar que Prevotella intermedia pode adquirir resistencia a alguns tipos de antibioticos, e, por isso, o seu controle e um desafio a clinica atual...(AU) Prevotella intermedia is a Gram negative anaerobic microorganism, considered one of the etiologic agents of periodontal diseases. Taking into account that the subgingival biofilm is its major habitat, any break of the environment homeostasis may lead to the development of the microorganism and consequent damage to the surrounding tissues. Several researches have been conducted in order to identify the role of this microorganism in the periodontal diseases. Thus, this study aimed to review the literature in an attempt to collect information about the characteristics and effects of Prevotella intermedia in the periodontal healthdisease context. The search was performed in the PubMed and Lilacs databases, as well as under a random search. From a total of 47 included articles, some major results could be drawn: Prevotella intermedia is strongly related to the occurrence of periodontal diseases, and its characteristics lead to the incidence of several diseases. Moreover, this microorganism is able to produce pigments and a variety of enzymes, which potentiate the damage of periodontal tissues. There are several characteristics that increase the pathogenicity and virulence of this microorganism, including the polyssacharidic capsule, the presence of protective enzymes against oxygen, the presence and production of proteases, as well as the stimulation of grow factors in the host. There is no consensus in the literature regarding the cause-effect relationship between the presence of Prevotella intermedia and diabetes. However, this microorganism seems to be involved in the occurrence of HIV-positive people. Lastly, it is worth to mention that Prevotella intermedia may acquire strength to some antibiotic types, and, therefore, its control is a challenge to the current clinic...(AU)

International Journal of Adhesion and Adhesives, Apr 1, 2018

Experimental one-step, self-etch adhesives containing different contents of an acidic methacrylat... more Experimental one-step, self-etch adhesives containing different contents of an acidic methacrylate monomer (GDMA-P) were formulated and their effectiveness in bonding to sound dentin (SoD) or caries-affected dentin (CAD) was investigated. The CAD was obtained using a microcosm biofilm model. HEMA-based adhesives were formulated with 5, 20, or 35 wt% of GDMA-P (AD5, AD20, AD35), with pH ranging between 1.05 ± 0.05 and 1.93 ± 0.15. Shear bond strength to dentin was assessed after storage for 24 h or 6 months. Morphology of the bonded interfaces was observed using SEM. The exposed collagen area at bonded interfaces was measured using a histological staining technique. Degree of C=C conversion within the hybrid layer, measured by micro-Raman spectroscopy, indicated that AD35 had lower in situ C=C conversion than the other adhesives. A more evident exposed collagen zone along the base of the hybrid layer was observed in CAD samples. The hybrid layer was generally thicker in CAD. AD20 had the highest in situ C=C conversion and yielded stable bond strengths that were generally independent of the dentin condition. Additionally, the bonding effectiveness was dependent on adhesive acidity, type of dentin bonding substrate, and water storage time.

Dental Materials, Oct 1, 2021

OBJECTIVE The purpose of this systematic review and meta-analysis was to analyze the literature o... more OBJECTIVE The purpose of this systematic review and meta-analysis was to analyze the literature on the bond strength of self-etching (SE) adhesives containing 10-MDP or other acidic functional monomers, comparing the bonding performance of both compositions. METHODS This study is registered in PROSPERO (CRD42020175715) and it followed the PRISMA Statement. The literature search was performed in PubMed, Web of Science, SciELO, Scopus, LILACS, IBECS, and BBO from the starting coverage date through 30 June 2021. Study eligibility criteria consisted of in vitro studies that evaluated the bond strength (microtensile, microshear, tensile or shear testing) to sound dentin/enamel of a minimum of two distinct SE systems, with at least one material containing 10-MDP and one other being comprised of a distinct acidic composition. Statistical analyses were carried out with RevMan 5.3.5 and using random-effects models with the significance level at p < 0.05. Also, Bayesian network meta-analysis (NMA) was conducted using MetaInsight V3 tool. RESULTS From 740 relevant studies evaluated in full-text analysis, 210 were incorporated to the systematic review and 206 in meta-analysis. The majority of studies was classified as having medium risk of bias (56.7%), followed by low (35.2%) and high (8.1%) risk of bias. Data from a total of 64 adhesive systems were collected, which favored the 10-MDP-based group at both dentin (overall effect: 6.98; 95% CI: 5.61, 8.36; p < 0.00001) and enamel (overall effect: 2.79; 95% CI: 1.62, 3.96; p < 0.00001) substrates. Microtensile testing was more frequently used (73.4%) in the included studies. Adhesives based on 10-MDP showed greater bonding performance than adhesives comprised of monomers such as PENTA, 6-MHP, 4-META, 4-MET, pyrophosphate esters, mixed composition or monomers derived from sulfonic acid (p ≤ 0.01); whereas similar bond strength values were verified between 10-MDP-based materials and those containing PEM-F, acrylamide phosphates, 4-AET, MAC-10, or monomers derived from polyacrylic and phosphonic acids (p ≥ 0.05). Adhesives based on GPDM were the only ones that resulted in greater bonding potential than the 10-MDP-based group (p = 0.03). Dental bonds in dentin were favored with the application of 2-step 10-MDP-based adhesives; whereas in enamel the dental bonds were favored for both 2-steps versions of adhesives, regardless of the presence of 10-MDP. Indirect evidence from NMA revealed that 1-step 10-MDP-free and universal 10-MDP-free adhesives seemed to perform worst in dentin and enamel, respectively. SIGNIFICANCE Adhesives containing 10-MDP showed higher bonding performance than materials formulated with other acidic ingredients, although this result relied on the type of mechanical testing, type of the substrate, acidic composition of the adhesive, and the application category of the SE system. This review summarized the effects of the foregoing factors on the adhesion to dental substrates.

Brazilian Dental Journal, Oct 1, 2019

Gold standard adhesives (Scotchbond Multipurpose Plus and Clearfil SE Bond) were controls. Microt... more Gold standard adhesives (Scotchbond Multipurpose Plus and Clearfil SE Bond) were controls. Microtensile dentin bond strength (n=5 teeth), pH, and C=C conversion (n=3) were evaluated. Data were analyzed at α=0.05. All adhesives showed differences in pH. Ybond had intermediately strong aggressiveness, whereas the others were ultra-mild. The C=C conversion was different in most adhesives. In the etch-and-rinse strategy, all adhesives showed similar results generally except for G-Bond, which had lower bond strength than most adhesives. G-Bond and Tetric-N-Bond showed lower bond strengths after 6 months compared with 24 h, whereas the other adhesives had stable dentin bonds. In the self-etch strategy, G-Bond had lower bond strength than most adhesives. After 6 months, Ambar was the only adhesive showing lower dentin bond strength compared with 24 h. Most adhesives had discreet drops in bond strength during aging when used in the self-etch strategy. The failure modes were also material dependent, with a general pattern of increased adhesive and/or pre-testing failures after storage. In conclusion, the bonding performance of universal adhesives to dentin is material dependent. Most adhesives had stable dentin bonds with results comparable to the gold standard materials, particularly when applied in the self-etch mode. In general, it seems the use of universal adhesives in dentin should not be preceded by phosphoric acid etching.

Even3 Publicações eBooks, 2023

A oclusão dental tem como conceito a relação dos dentes da arcada superior com a arcada inferior,... more A oclusão dental tem como conceito a relação dos dentes da arcada superior com a arcada inferior, quando há o contato funcional durante a atividade mandibular. Existem relações intermaxilares que são de fundamental importância para que os encargos do Sistema Estomatognático sejam concluídas, são elas: relação cêntrica (RC), máxima intercuspidação habitual (MIH), oclusão em relação cêntrica (ORC), dimensão vertical de oclusão (DVO),dimensão vertical de repouso (DVR) e espaço funcional livre (EFL). Existem diversos estudos, mostrando maneiras diferentes de reverter esses danos através do restabelecimento dessa dimensão. Por isso, o objetivo dessa revisão da literatura é, através de uma análise em estudos científicos, discutir razões pelas quais ocorrem as alterações da DVO, quais são as consequências, e as possibilidades do restabelecimento da mesma. A partir dessa análise, justificar a necessidade do restabelecimento da DVO.

Even3 Publicações eBooks, 2023

A Disfunção Temporomandibular (DTM) é definida pela American Academy of Oral Pain como um conjunt... more A Disfunção Temporomandibular (DTM) é definida pela American Academy of Oral Pain como um conjunto de distúrbios que englobam estruturas neuromusculares, musculoesqueléticas e a Articulação Temporomandibular (ATM). Sua etiologia multifatorial leva a uma ampla gama de sinais e sintomas e, consequentemente, uma extensa lista de possíveis tratamentos, sendo necessário a associação de diferentes técnicas e abordagens. Nesse contexto, as Terapias Complementares Integrativas vêm sendo comumente utilizadas em associação aos tratamentos tradicionais das DTMs, contribuindo para maiores taxas de sucesso clínico. Este capítulo tem como objetivo, apresentar uma revisão da literatura a respeito do uso da acupuntura, reiki e a ozonioterapia no tratamento das DTMs. Dessa forma, foram realizadas buscas de publicações científicas nas plataformas Google Acadêmico, PubMED, Scielo e Periódicos CAPES, a fim de elucidar os protocolos adotados, taxas de sucesso, longevidade e qualidade de vida dos pacientes. Oriunda da Medicina Tradicional Chinesa (MTC), a acupuntura é caracteriza pela utilização de agulhas específicas, as quais, uma vez inseridas na pele e nos músculos, exercem ação analgésica, anti-inflamatória e neurohormonal, pelo equilíbrio do “qi”. Já o reiki, disseminado pela cultura japonesa, busca a harmonização das forças que regem o corpo (Chakras), a partir da imposição das mãos pelo do praticante, resultando na liberação de toxinas e dos bloqueios energéticos, tendo como consequência, o alívio da sintomatologia dolorosa. Em contrapartida, a ozonioterapia, diferentemente das anteriores, atua a partir do uso de uma substância, o ozônio (O3), o qual tem ação antisséptica e anti-inflamatória, auxiliando na redução do desconforto do paciente. Apesar de não resultarem na resolução completa das DTMs, a coleta de dados apontou o uso dessas terapias como favorável, principalmente, quando observada a qualidade de vida da população. Nessa perspectiva, a sua aplicação na clínica odontológica, complementa as modalidades de tratamento atualmente existentes, corroborando para o desenvolvimento técnico científico.

International Journal of Adhesion and Adhesives, Sep 1, 2022

Journal of Clinical Dentistry and Research, May 16, 2019

O presente estudo avaliou a resistência de união do reparo (RUR), ângulo de contato (θ) e morfolo... more O presente estudo avaliou a resistência de união do reparo (RUR), ângulo de contato (θ) e morfologia da superfície de reparos de compósito na dentina (DE), resina composta (RC) e interface dentina-compósito (DE-RC) após diferentes tratamentos de superfície. Incisivos bovinos foram usados nos testes de RUR e θ; blocos de RC (Opallis, FGM) foram preparados para avaliação do θ com a água. Os espécimes foram separados em quatro grupos (n=10 para RUR; n=5 para θ) de acordo com o agente de união aplicado: sem tratamento (C); condicionamento ácido seguido da aplicação de adesivo (Ac+Ad); silano (S); e ácido + silano + adesivo (Ac+S+Ad). Para a RUR, o teste de resistência de união ao microcisalhamento foi realizado. Para o teste de θ, gotas d’água foram dispensadas na superfície dos espécimes após o tratamento com os agentes de união. Todos os substratos testados foram analisados em microscopia eletrônica de varredura, e os dados foram analisados por ANOVA e teste de Student-Newman-Keuls (α=0,05). Na DE, a aplicação de Ac+S+Ad reduziu o molhamento da dentina. Na RC, todos os agentes de união aumentaram o molhamento comparados a C. A RUR foi significativamente maior para os grupos tratados com adesivo, comparados aos grupos C e S, tanto na DE quanto na interface DE-RC. Na RC, apenas C mostrou menor resistência de união, comparado aos outros grupos. Em conclusão, os dentistas devem atentar que o desempenho do reparo de restaurações de resina composta pode depender dos substratos envolvidos no procedimento, e que a aplicação do sistema adesivo é o principal tratamento químico recomendado para uma adequada união a todos os substratos.

Journal of Health Sciences, Feb 23, 2018

O objetivo deste estudo foi avaliar a resistência de união (RU) de adesivos contemporâneos à dent... more O objetivo deste estudo foi avaliar a resistência de união (RU) de adesivos contemporâneos à dentina sadia e afetada por cárie. SE) em dentina bovina hígida e cariada. Dois cilindros de resina composta (Filtek Z-350) foram confeccionados na superfície. Os cilindros foram submetidos ao teste de cisalhamento após 24h em uma máquina Universal de Ensaios. Para cada adesivo foi espectroscopia de infravermelho por Transformada de Fourier. Os dados foram analisados por ANOVA e Mann Whitney (5%). em ambos os substratos (p0,284), falhas adesivas predominaram. Quando analisado pH, o ADHE-SE se mostrou o mais e o Single Bond o menos ácido, já para o GC o ADHE-SE foi o que apresentou menores valores, enquanto o Ambar foi o que mais converteu. quando comparado aos outros adesivos do estudo.

International Journal of Adhesion and Adhesives, Jun 1, 2021

Abstract This study evaluated the bonding performance and structural reliability of indirect resi... more Abstract This study evaluated the bonding performance and structural reliability of indirect resin composite restorations luted to dentin and enamel. Four resin luting agents were tested in the study, namely three total-etch materials (Allcem; Allcem Core; and RelyX ARC) and one self-adhesive material (RelyX U200). The materials were characterized with degree of conversion (DC) and pH analyses, and used to lute resin composite restorations to dentin or enamel (n = 6). The restorations were prepared for microtensile bond strength (μTBS) testing (DL500). Data were analyzed with ANOVA or Kruskal-Wallis and Tukey/SNK (α = 0.05). Weibull analysis was used to verify the structural reliability and characteristic strength of dental bonds. While RelyX ARC exhibited greater DC, RelyX U200 was the most acidic material of the study. Allcem and RelyX U200 demonstrated greater and lower μTBS, respectively, at both dentin and enamel. Comparing μTBS of dentin and enamel, RelyX ARC and RelyX U200 produced higher bonds in dentin. RelyX U200 showed ~100% of adhesive failures, differing from other groups. Structural reliability was higher for Allcem Core in dentin and for RelyX U200 in enamel; the characteristic strength was higher for Allcem and lower for RelyX U200. Conventional resin luting agents performed better than the self-adhesive material, at both dentin and enamel. Among the conventional materials, Allcem demonstrated an overall greater bonding ability and lower probability to failure. DC and pH of resin luting agents did not influence on their bonding performance.

Journal of Adhesion Science and Technology, Oct 15, 2019

This study aimed to investigate the one-year bond strengths to dentin of one-bottle etch-and-rins... more This study aimed to investigate the one-year bond strengths to dentin of one-bottle etch-and-rinse adhesive systems applied under different moisture conditions. Class V cavities were prepared in bovine incisors and randomly allocated (n ¼ 8) according to the type of adhesive system used-SB (Adper TM Single Bond 2); PB (Prime & Bond 2.1); and XPB (XP Bond)and the moisture condition kept in the cavitymoist, over-wet, and over-dry. Filtek TM Z250 was used for teeth restoration. Specimens for microtensile bond strength (mTBS) test were obtained and stored in water for 24 h or 1 year, and submitted to mechanical testing. Data were analyzed using t-tests, ANOVA and the Holm-Sidak post hoc test (a ¼ 0.05). Weibull analysis was used to verify the reliability of specimens. The type of adhesive and the moisture condition of the substrate affected the mTBS. At 24 h, SB performed better under the moist and over-wet conditions. At 1 year, SB, PB, and XPB showed the greatest percentage reduction at the moist ($38%), over-wet (100%), and over-dry (100%) conditions, respectively. The reliability of adhesives was affected by the variable factors tested. In conclusion, the solvent composition of adhesives and the moisture condition of the substrate play an important role in the bond strength and bonding stability of resin-based restorations, as well as on the reliability of the adhesive interfaces over time.

Computers in Biology and Medicine, Sep 1, 2022

Dental Materials, 2018

d e n t a l m a t e r i a l s 3 4 (S 1) (2 0 1 8) e1-e141 e115 such as water sorption and solubil... more d e n t a l m a t e r i a l s 3 4 (S 1) (2 0 1 8) e1-e141 e115 such as water sorption and solubility, in order to predict the clinical behavior of these materials, especially their stability in the oral environment. Thus, the objective of this in vitro study was to evaluate the sorption and solubility of different cementation composite materials photoactivated throughout a ceramic laminate. The hypothesis tested is that the cementing materials show similar values of sorption and solubility. Materials and methods: Four composite materials used for cementation of indirect restorations were evaluated (Ivoclar Vivadent): dual-cure universal resin cement (CD, Variolink N), dual-cure self-adhesive resin cement (CA, Multilink Speed), light-cured resin cement (CF, Variolink Esthetic LC) and low viscosity resin composite (flow) (RC, Tetric N-Flow). Disc-shaped specimens (1 mm thick × 15 mm diameter) were produced according to manufacturer's instructions and photoactivated throughout a lithium disilicate-based glassceramic (e-max CAD, A1 HT, Ivoclar Vivadent) laminate of 0.5 mm thickness, simulating the cementation of a ceramic veneer (n = 5). The sorption and solubility test was performed according to ISO 4049. One-way ANOVA and Kruskal-Wallis statistics were used to analyze solubility and sorption data, respectively (˛= 0.05). Differences between groups were evaluated with Tukey's test (˛= 0.05). Results: There was a significant difference between the experimental groups for sorption (p = 0.023) and solubility (p < 0.001). CA showed the highest sorption median (32.3 g/mm 3). RC, CF and CD showed lower and similar sorption values. For solubility, the following statistical ranking was observed: CA (8.6 g/mm 3) < CF (6.6 g/mm 3) < RC (2.2 g/mm 3) = CD (1.8 g/mm 3). Yet, all materials presented water sorption values lower or equal to 40 g/mm 3 , which is the limit recommended by ISO 4049 for clinical use. Except for CA, all groups presented solubility values lower than 7.5 g/mm 3 , also in agreement with ISO recommendations. Higher solubility found for CA may be explained by the hydrophilic behavior of self-adhesive cements. Conclusions: The hypothesis of the study was rejected since there were differences in the values of sorption and solubility among the cementation materials. However, all materials complied with the ISO 4049 requirements, except for the dual-cure self-adhesive resin cement, which showed solubility values higher than the recommended limit.

International Journal of Dentistry, Aug 15, 2018

Herein, the effect of different post-pressing times and pressure in two cycles of polymerization ... more Herein, the effect of different post-pressing times and pressure in two cycles of polymerization on the degree of conversion (DC) of thermally activated acrylic resin (TRRA) is analyzed to optimize the polymerization of this material. After postpressing for 0, 6, or 12 h, polymerization was performed with or without a pressure of 60 psi (0.41 MPa) in a short (4 h) or a long (11 h) cycle, totaling 12 groups. To determine the DC, PMMA specimens were analyzed by Fourier transform infrared spectroscopy. e influence of each factor alone on the DC was studied by experimental planning. e statistical tests used were three-way ANOVA, t-test, Tukey's test, and Levene's test, with a margin of error of 5%. Two groups prepared with post-pressing times of 12 h had the lowest DC (p < 0.001). Post-pressing times of 0 and 6 h did not yield statistically different results. Pressure increased the DC in only one group (long cycle +12 h, p � 0.001). e short cycle resulted in a higher DC than the long cycle in 2 groups (with pressure +0 h, p � 0.002; without pressure +6 h, p � 0.015), while the long cycle yielded a statistically higher DC in only one group (with pressure +12 h, p < 0.001). e polymerization showed satisfactory DC in all 12 groups. Small differences found among the specimens indicate that the pressure, post-pressing time, and polymerization cycles herein were not influential factors for the DC of PMMA.

Base de dados : BBO. Pesquisa : 24576 [Identificador único]. Referências encontradas : 1 [refinar... more Base de dados : BBO. Pesquisa : 24576 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, BBO, seleciona. para imprimir. Fotocópia. Id: 24576. Autor: Guimarães ...

Medicina Oral Patología Oral y Cirugia Bucal, 2021

Background: To assess the efficacy of PBMT on reducing postoperative pain scores in patients subm... more Background: To assess the efficacy of PBMT on reducing postoperative pain scores in patients submitted to third molar extractions. Material and Methods: A randomized controlled trial (ReBEC:RBR-94BCKZ) was designed according to the SPIRIT and followed the CONSORT. Patients were randomly allocated according to control or PBMT groups. PBMT consisted of the application of GaAlAs laser (808nm;50mW) applied in six points (1.23 min;11 J/cm2) after extraction. Pain scores were assessed using the Visual Analogue Scale (VAS) in millimeters evaluated after 6 (T6), 24 (T24), and 48 (T48) hours. The Wilcoxon Mann-Whitney test was used to check for possible associations between VAS scores and treatment groups. Results: A total of 101 third molar extractions were performed in 44 patients. The mean age was 28 years old(SD±11.54). Comparing control and intervention, PBMT group showed a significant effect on the reduction of postoperative pain at T6(mean VAS=0.9; C.I:0.63-1.16) compared to control (mean VAS=2.5;C.I:2.1-2.88) (p<0.001). The same statistically significant effect on the reduction of postoperative pain was observed at T24 (PBMT mean VAS=0.72;C.I:0.51-0.93; control mean VAS=2.86;C.I:2.40-3.31;p<0.001) and T48 (PBMT mean VAS=0.64;C.I:0.36-0.92; control mean VAS=2.86;C.I:2.37-3.34;p<0.001). Conclusions: PBMT significantly reduce the postoperative pain scores when assessed 6, 24, and 48 hours after third molar extractions.

Archives of Health Investigation, 2017

O objetivo deste trabalho foi analisar o efeito do tempo de pos-prensagem (0 horas, 6 horas e 12 ... more O objetivo deste trabalho foi analisar o efeito do tempo de pos-prensagem (0 horas, 6 horas e 12 horas) e uso de pressao (com pressao/ sem pressao) em dois ciclos de polimerizacao (curto 4h/ longo 11h) sobre o grau de conversao de resinas acrilicas ativadas termicamente (RAAT). Foram confeccionados 72 corpos de prova de RAAT e divididos em 12 grupos. Apos o processo de polimerizacao os corpos de prova foram pulverizados e submetidos a analise do grau de conversao, atraves da espectroscopia de infravermelho por transformadas de Fourier (FTIR). Os dados foram tabulados em planilha de Excel e submetido aos testes estatisticos ANOVA tres fatores; t-Student; Tukey e F de Levene, com margem de erro 5%. Para tempo de pos-prensagem as medias foram correspondentemente menores com 12 horas de prensagem, exceto para ciclo longo com pressao. As unicas diferencas significativas entre a presenca ou ausencia de pressao ocorreu no ciclo longo com 0 horas (p=0,001) e com 12 horas de prensagem (p=0,0...

Editora Científica Digital eBooks, 2023

Journal of Prosthetic Dentistry, Dec 1, 2019

Feldspathic ceramics are commonly used for laminate veneer restorations because of the excellent ... more Feldspathic ceramics are commonly used for laminate veneer restorations because of the excellent optical properties 1 associated with their high vitreous phase content. 2-4 The clinical success, longevity, and strengthening of thin feldspathic ceramic restorations are linked to the luting procedures 5-8 and the achievement of an adequate bonded interface between the ceramic and resin-based luting agent (RBLA). 6 The quality of the bonded interface and the mechanical strength of feldspathic ceramic have been associated with the modulus of elasticity (E) 7-9 and the particle size of filler content in RBLAs. 8 However, evidence on the effect that the filler content of RBLAs may have on the performance of bonded veneers is lacking. Inorganic filler content affects the viscosity (h) of RBLAs 10,11 and thus may interfere with This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil (Finance Code 001). F.J.B. thanks CAPES/Brazil for a scholarship.

Periodontia, 2015

Prevotella intermedia e um microrganismo anaerobio Gram negativo, considerado um dos agentes etio... more Prevotella intermedia e um microrganismo anaerobio Gram negativo, considerado um dos agentes etiologicos de doencas periodontais. Tendo em vista que o biofilme subgengival e um dos seus principais habitats, qualquer quebra na homeostase do meio pode favorecer seu desenvolvimento e consequente dano aos tecidos atingidos. Diversas pesquisas vem sendo realizadas a fim de identificar o papel deste microrganismo nas doencas periodontais. Assim, este trabalho teve por objetivo revisar a literatura para coletar informacoes sobre as caracteristicas e efeitos de Prevotella intermedia no contexto saude-doenca periodontal. A busca foi realizada nas bases de dados PubMed e Lilacs, bem como atraves de uma busca aleatoria. De um total de 47 artigos incluidos, alguns principais resultados puderam ser destacados: Prevotella intermedia esta fortemente associada ao quadro de doencas periodontais e suas caracteristicas favorecem o acometimento e intensificacao de doencas diversas. Alem disso, este microrganismo e capaz de produzir pigmentos e uma variedade de enzimas as quais favorecem danos aos tecidos periodontais. Existem varias caracteristicas que aumentam a patogenicidade e virulencia deste microrganismo, como por exemplos a sua capsula polissacaridica, a presenca de enzimas protetoras contra o oxigenio, a presenca e producao de proteases, alem da estimulacao de fatores de crescimento no hospedeiro. Nao ha consenso na literatura acerca da relacao de causa-efeito entre presenca de Prevotella intermedia e diabetes. Contudo, este microrganismo parece estar envolvido no quadro de pacientes HIV positivo. Por fim, e importante salientar que Prevotella intermedia pode adquirir resistencia a alguns tipos de antibioticos, e, por isso, o seu controle e um desafio a clinica atual...(AU) Prevotella intermedia is a Gram negative anaerobic microorganism, considered one of the etiologic agents of periodontal diseases. Taking into account that the subgingival biofilm is its major habitat, any break of the environment homeostasis may lead to the development of the microorganism and consequent damage to the surrounding tissues. Several researches have been conducted in order to identify the role of this microorganism in the periodontal diseases. Thus, this study aimed to review the literature in an attempt to collect information about the characteristics and effects of Prevotella intermedia in the periodontal healthdisease context. The search was performed in the PubMed and Lilacs databases, as well as under a random search. From a total of 47 included articles, some major results could be drawn: Prevotella intermedia is strongly related to the occurrence of periodontal diseases, and its characteristics lead to the incidence of several diseases. Moreover, this microorganism is able to produce pigments and a variety of enzymes, which potentiate the damage of periodontal tissues. There are several characteristics that increase the pathogenicity and virulence of this microorganism, including the polyssacharidic capsule, the presence of protective enzymes against oxygen, the presence and production of proteases, as well as the stimulation of grow factors in the host. There is no consensus in the literature regarding the cause-effect relationship between the presence of Prevotella intermedia and diabetes. However, this microorganism seems to be involved in the occurrence of HIV-positive people. Lastly, it is worth to mention that Prevotella intermedia may acquire strength to some antibiotic types, and, therefore, its control is a challenge to the current clinic...(AU)

International Journal of Adhesion and Adhesives, Apr 1, 2018

Experimental one-step, self-etch adhesives containing different contents of an acidic methacrylat... more Experimental one-step, self-etch adhesives containing different contents of an acidic methacrylate monomer (GDMA-P) were formulated and their effectiveness in bonding to sound dentin (SoD) or caries-affected dentin (CAD) was investigated. The CAD was obtained using a microcosm biofilm model. HEMA-based adhesives were formulated with 5, 20, or 35 wt% of GDMA-P (AD5, AD20, AD35), with pH ranging between 1.05 ± 0.05 and 1.93 ± 0.15. Shear bond strength to dentin was assessed after storage for 24 h or 6 months. Morphology of the bonded interfaces was observed using SEM. The exposed collagen area at bonded interfaces was measured using a histological staining technique. Degree of C=C conversion within the hybrid layer, measured by micro-Raman spectroscopy, indicated that AD35 had lower in situ C=C conversion than the other adhesives. A more evident exposed collagen zone along the base of the hybrid layer was observed in CAD samples. The hybrid layer was generally thicker in CAD. AD20 had the highest in situ C=C conversion and yielded stable bond strengths that were generally independent of the dentin condition. Additionally, the bonding effectiveness was dependent on adhesive acidity, type of dentin bonding substrate, and water storage time.

Dental Materials, Oct 1, 2021

OBJECTIVE The purpose of this systematic review and meta-analysis was to analyze the literature o... more OBJECTIVE The purpose of this systematic review and meta-analysis was to analyze the literature on the bond strength of self-etching (SE) adhesives containing 10-MDP or other acidic functional monomers, comparing the bonding performance of both compositions. METHODS This study is registered in PROSPERO (CRD42020175715) and it followed the PRISMA Statement. The literature search was performed in PubMed, Web of Science, SciELO, Scopus, LILACS, IBECS, and BBO from the starting coverage date through 30 June 2021. Study eligibility criteria consisted of in vitro studies that evaluated the bond strength (microtensile, microshear, tensile or shear testing) to sound dentin/enamel of a minimum of two distinct SE systems, with at least one material containing 10-MDP and one other being comprised of a distinct acidic composition. Statistical analyses were carried out with RevMan 5.3.5 and using random-effects models with the significance level at p < 0.05. Also, Bayesian network meta-analysis (NMA) was conducted using MetaInsight V3 tool. RESULTS From 740 relevant studies evaluated in full-text analysis, 210 were incorporated to the systematic review and 206 in meta-analysis. The majority of studies was classified as having medium risk of bias (56.7%), followed by low (35.2%) and high (8.1%) risk of bias. Data from a total of 64 adhesive systems were collected, which favored the 10-MDP-based group at both dentin (overall effect: 6.98; 95% CI: 5.61, 8.36; p < 0.00001) and enamel (overall effect: 2.79; 95% CI: 1.62, 3.96; p < 0.00001) substrates. Microtensile testing was more frequently used (73.4%) in the included studies. Adhesives based on 10-MDP showed greater bonding performance than adhesives comprised of monomers such as PENTA, 6-MHP, 4-META, 4-MET, pyrophosphate esters, mixed composition or monomers derived from sulfonic acid (p ≤ 0.01); whereas similar bond strength values were verified between 10-MDP-based materials and those containing PEM-F, acrylamide phosphates, 4-AET, MAC-10, or monomers derived from polyacrylic and phosphonic acids (p ≥ 0.05). Adhesives based on GPDM were the only ones that resulted in greater bonding potential than the 10-MDP-based group (p = 0.03). Dental bonds in dentin were favored with the application of 2-step 10-MDP-based adhesives; whereas in enamel the dental bonds were favored for both 2-steps versions of adhesives, regardless of the presence of 10-MDP. Indirect evidence from NMA revealed that 1-step 10-MDP-free and universal 10-MDP-free adhesives seemed to perform worst in dentin and enamel, respectively. SIGNIFICANCE Adhesives containing 10-MDP showed higher bonding performance than materials formulated with other acidic ingredients, although this result relied on the type of mechanical testing, type of the substrate, acidic composition of the adhesive, and the application category of the SE system. This review summarized the effects of the foregoing factors on the adhesion to dental substrates.

Brazilian Dental Journal, Oct 1, 2019

Gold standard adhesives (Scotchbond Multipurpose Plus and Clearfil SE Bond) were controls. Microt... more Gold standard adhesives (Scotchbond Multipurpose Plus and Clearfil SE Bond) were controls. Microtensile dentin bond strength (n=5 teeth), pH, and C=C conversion (n=3) were evaluated. Data were analyzed at α=0.05. All adhesives showed differences in pH. Ybond had intermediately strong aggressiveness, whereas the others were ultra-mild. The C=C conversion was different in most adhesives. In the etch-and-rinse strategy, all adhesives showed similar results generally except for G-Bond, which had lower bond strength than most adhesives. G-Bond and Tetric-N-Bond showed lower bond strengths after 6 months compared with 24 h, whereas the other adhesives had stable dentin bonds. In the self-etch strategy, G-Bond had lower bond strength than most adhesives. After 6 months, Ambar was the only adhesive showing lower dentin bond strength compared with 24 h. Most adhesives had discreet drops in bond strength during aging when used in the self-etch strategy. The failure modes were also material dependent, with a general pattern of increased adhesive and/or pre-testing failures after storage. In conclusion, the bonding performance of universal adhesives to dentin is material dependent. Most adhesives had stable dentin bonds with results comparable to the gold standard materials, particularly when applied in the self-etch mode. In general, it seems the use of universal adhesives in dentin should not be preceded by phosphoric acid etching.

Even3 Publicações eBooks, 2023

A oclusão dental tem como conceito a relação dos dentes da arcada superior com a arcada inferior,... more A oclusão dental tem como conceito a relação dos dentes da arcada superior com a arcada inferior, quando há o contato funcional durante a atividade mandibular. Existem relações intermaxilares que são de fundamental importância para que os encargos do Sistema Estomatognático sejam concluídas, são elas: relação cêntrica (RC), máxima intercuspidação habitual (MIH), oclusão em relação cêntrica (ORC), dimensão vertical de oclusão (DVO),dimensão vertical de repouso (DVR) e espaço funcional livre (EFL). Existem diversos estudos, mostrando maneiras diferentes de reverter esses danos através do restabelecimento dessa dimensão. Por isso, o objetivo dessa revisão da literatura é, através de uma análise em estudos científicos, discutir razões pelas quais ocorrem as alterações da DVO, quais são as consequências, e as possibilidades do restabelecimento da mesma. A partir dessa análise, justificar a necessidade do restabelecimento da DVO.

Even3 Publicações eBooks, 2023

A Disfunção Temporomandibular (DTM) é definida pela American Academy of Oral Pain como um conjunt... more A Disfunção Temporomandibular (DTM) é definida pela American Academy of Oral Pain como um conjunto de distúrbios que englobam estruturas neuromusculares, musculoesqueléticas e a Articulação Temporomandibular (ATM). Sua etiologia multifatorial leva a uma ampla gama de sinais e sintomas e, consequentemente, uma extensa lista de possíveis tratamentos, sendo necessário a associação de diferentes técnicas e abordagens. Nesse contexto, as Terapias Complementares Integrativas vêm sendo comumente utilizadas em associação aos tratamentos tradicionais das DTMs, contribuindo para maiores taxas de sucesso clínico. Este capítulo tem como objetivo, apresentar uma revisão da literatura a respeito do uso da acupuntura, reiki e a ozonioterapia no tratamento das DTMs. Dessa forma, foram realizadas buscas de publicações científicas nas plataformas Google Acadêmico, PubMED, Scielo e Periódicos CAPES, a fim de elucidar os protocolos adotados, taxas de sucesso, longevidade e qualidade de vida dos pacientes. Oriunda da Medicina Tradicional Chinesa (MTC), a acupuntura é caracteriza pela utilização de agulhas específicas, as quais, uma vez inseridas na pele e nos músculos, exercem ação analgésica, anti-inflamatória e neurohormonal, pelo equilíbrio do “qi”. Já o reiki, disseminado pela cultura japonesa, busca a harmonização das forças que regem o corpo (Chakras), a partir da imposição das mãos pelo do praticante, resultando na liberação de toxinas e dos bloqueios energéticos, tendo como consequência, o alívio da sintomatologia dolorosa. Em contrapartida, a ozonioterapia, diferentemente das anteriores, atua a partir do uso de uma substância, o ozônio (O3), o qual tem ação antisséptica e anti-inflamatória, auxiliando na redução do desconforto do paciente. Apesar de não resultarem na resolução completa das DTMs, a coleta de dados apontou o uso dessas terapias como favorável, principalmente, quando observada a qualidade de vida da população. Nessa perspectiva, a sua aplicação na clínica odontológica, complementa as modalidades de tratamento atualmente existentes, corroborando para o desenvolvimento técnico científico.

International Journal of Adhesion and Adhesives, Sep 1, 2022

Journal of Clinical Dentistry and Research, May 16, 2019

O presente estudo avaliou a resistência de união do reparo (RUR), ângulo de contato (θ) e morfolo... more O presente estudo avaliou a resistência de união do reparo (RUR), ângulo de contato (θ) e morfologia da superfície de reparos de compósito na dentina (DE), resina composta (RC) e interface dentina-compósito (DE-RC) após diferentes tratamentos de superfície. Incisivos bovinos foram usados nos testes de RUR e θ; blocos de RC (Opallis, FGM) foram preparados para avaliação do θ com a água. Os espécimes foram separados em quatro grupos (n=10 para RUR; n=5 para θ) de acordo com o agente de união aplicado: sem tratamento (C); condicionamento ácido seguido da aplicação de adesivo (Ac+Ad); silano (S); e ácido + silano + adesivo (Ac+S+Ad). Para a RUR, o teste de resistência de união ao microcisalhamento foi realizado. Para o teste de θ, gotas d’água foram dispensadas na superfície dos espécimes após o tratamento com os agentes de união. Todos os substratos testados foram analisados em microscopia eletrônica de varredura, e os dados foram analisados por ANOVA e teste de Student-Newman-Keuls (α=0,05). Na DE, a aplicação de Ac+S+Ad reduziu o molhamento da dentina. Na RC, todos os agentes de união aumentaram o molhamento comparados a C. A RUR foi significativamente maior para os grupos tratados com adesivo, comparados aos grupos C e S, tanto na DE quanto na interface DE-RC. Na RC, apenas C mostrou menor resistência de união, comparado aos outros grupos. Em conclusão, os dentistas devem atentar que o desempenho do reparo de restaurações de resina composta pode depender dos substratos envolvidos no procedimento, e que a aplicação do sistema adesivo é o principal tratamento químico recomendado para uma adequada união a todos os substratos.

Journal of Health Sciences, Feb 23, 2018

O objetivo deste estudo foi avaliar a resistência de união (RU) de adesivos contemporâneos à dent... more O objetivo deste estudo foi avaliar a resistência de união (RU) de adesivos contemporâneos à dentina sadia e afetada por cárie. SE) em dentina bovina hígida e cariada. Dois cilindros de resina composta (Filtek Z-350) foram confeccionados na superfície. Os cilindros foram submetidos ao teste de cisalhamento após 24h em uma máquina Universal de Ensaios. Para cada adesivo foi espectroscopia de infravermelho por Transformada de Fourier. Os dados foram analisados por ANOVA e Mann Whitney (5%). em ambos os substratos (p0,284), falhas adesivas predominaram. Quando analisado pH, o ADHE-SE se mostrou o mais e o Single Bond o menos ácido, já para o GC o ADHE-SE foi o que apresentou menores valores, enquanto o Ambar foi o que mais converteu. quando comparado aos outros adesivos do estudo.

International Journal of Adhesion and Adhesives, Jun 1, 2021

Abstract This study evaluated the bonding performance and structural reliability of indirect resi... more Abstract This study evaluated the bonding performance and structural reliability of indirect resin composite restorations luted to dentin and enamel. Four resin luting agents were tested in the study, namely three total-etch materials (Allcem; Allcem Core; and RelyX ARC) and one self-adhesive material (RelyX U200). The materials were characterized with degree of conversion (DC) and pH analyses, and used to lute resin composite restorations to dentin or enamel (n = 6). The restorations were prepared for microtensile bond strength (μTBS) testing (DL500). Data were analyzed with ANOVA or Kruskal-Wallis and Tukey/SNK (α = 0.05). Weibull analysis was used to verify the structural reliability and characteristic strength of dental bonds. While RelyX ARC exhibited greater DC, RelyX U200 was the most acidic material of the study. Allcem and RelyX U200 demonstrated greater and lower μTBS, respectively, at both dentin and enamel. Comparing μTBS of dentin and enamel, RelyX ARC and RelyX U200 produced higher bonds in dentin. RelyX U200 showed ~100% of adhesive failures, differing from other groups. Structural reliability was higher for Allcem Core in dentin and for RelyX U200 in enamel; the characteristic strength was higher for Allcem and lower for RelyX U200. Conventional resin luting agents performed better than the self-adhesive material, at both dentin and enamel. Among the conventional materials, Allcem demonstrated an overall greater bonding ability and lower probability to failure. DC and pH of resin luting agents did not influence on their bonding performance.

Journal of Adhesion Science and Technology, Oct 15, 2019

This study aimed to investigate the one-year bond strengths to dentin of one-bottle etch-and-rins... more This study aimed to investigate the one-year bond strengths to dentin of one-bottle etch-and-rinse adhesive systems applied under different moisture conditions. Class V cavities were prepared in bovine incisors and randomly allocated (n ¼ 8) according to the type of adhesive system used-SB (Adper TM Single Bond 2); PB (Prime & Bond 2.1); and XPB (XP Bond)and the moisture condition kept in the cavitymoist, over-wet, and over-dry. Filtek TM Z250 was used for teeth restoration. Specimens for microtensile bond strength (mTBS) test were obtained and stored in water for 24 h or 1 year, and submitted to mechanical testing. Data were analyzed using t-tests, ANOVA and the Holm-Sidak post hoc test (a ¼ 0.05). Weibull analysis was used to verify the reliability of specimens. The type of adhesive and the moisture condition of the substrate affected the mTBS. At 24 h, SB performed better under the moist and over-wet conditions. At 1 year, SB, PB, and XPB showed the greatest percentage reduction at the moist ($38%), over-wet (100%), and over-dry (100%) conditions, respectively. The reliability of adhesives was affected by the variable factors tested. In conclusion, the solvent composition of adhesives and the moisture condition of the substrate play an important role in the bond strength and bonding stability of resin-based restorations, as well as on the reliability of the adhesive interfaces over time.

Computers in Biology and Medicine, Sep 1, 2022

Dental Materials, 2018

d e n t a l m a t e r i a l s 3 4 (S 1) (2 0 1 8) e1-e141 e115 such as water sorption and solubil... more d e n t a l m a t e r i a l s 3 4 (S 1) (2 0 1 8) e1-e141 e115 such as water sorption and solubility, in order to predict the clinical behavior of these materials, especially their stability in the oral environment. Thus, the objective of this in vitro study was to evaluate the sorption and solubility of different cementation composite materials photoactivated throughout a ceramic laminate. The hypothesis tested is that the cementing materials show similar values of sorption and solubility. Materials and methods: Four composite materials used for cementation of indirect restorations were evaluated (Ivoclar Vivadent): dual-cure universal resin cement (CD, Variolink N), dual-cure self-adhesive resin cement (CA, Multilink Speed), light-cured resin cement (CF, Variolink Esthetic LC) and low viscosity resin composite (flow) (RC, Tetric N-Flow). Disc-shaped specimens (1 mm thick × 15 mm diameter) were produced according to manufacturer's instructions and photoactivated throughout a lithium disilicate-based glassceramic (e-max CAD, A1 HT, Ivoclar Vivadent) laminate of 0.5 mm thickness, simulating the cementation of a ceramic veneer (n = 5). The sorption and solubility test was performed according to ISO 4049. One-way ANOVA and Kruskal-Wallis statistics were used to analyze solubility and sorption data, respectively (˛= 0.05). Differences between groups were evaluated with Tukey's test (˛= 0.05). Results: There was a significant difference between the experimental groups for sorption (p = 0.023) and solubility (p < 0.001). CA showed the highest sorption median (32.3 g/mm 3). RC, CF and CD showed lower and similar sorption values. For solubility, the following statistical ranking was observed: CA (8.6 g/mm 3) < CF (6.6 g/mm 3) < RC (2.2 g/mm 3) = CD (1.8 g/mm 3). Yet, all materials presented water sorption values lower or equal to 40 g/mm 3 , which is the limit recommended by ISO 4049 for clinical use. Except for CA, all groups presented solubility values lower than 7.5 g/mm 3 , also in agreement with ISO recommendations. Higher solubility found for CA may be explained by the hydrophilic behavior of self-adhesive cements. Conclusions: The hypothesis of the study was rejected since there were differences in the values of sorption and solubility among the cementation materials. However, all materials complied with the ISO 4049 requirements, except for the dual-cure self-adhesive resin cement, which showed solubility values higher than the recommended limit.