Effect of erosive and abrasive challenges on the bond strength and marginal degradation of composite restorations (original) (raw)
Can ultrasound application influence the bond strength of self-adhesive resin cements to dentin?
Acta Odontologica Latinoamericana Aol, 2012
RESUMO O objetivo desse estudo foi avaliar a influência da vibração ultrassônica na resistência de união de cimentos resinosos autoadesivos à dentina. Vinte e quatro dentes terceiros mo lares foram divididos aleatoriamente em quatro grupos (n=6/grupo): G1-RelyX Unicem; G2-Maxcem Elite; G3-RelyX Unicem com vibração ultrassônica; G4-Maxcem Elite com vibração ultrassônica. Blocos de resina composta foram cimentados sobre dentina plana com carga de 500 g por 2 min, seguido de fotoativação nos G1 e G2. Em G3 e G4, a vibração ultrassônica foi aplicada por 20 s sobre o bloco de resina composta, seguido de carga de 500 g por 1 min e 40 s e fotoativação. Após armazenagem em água destilada a 37º C por 24 h, seis conjuntos dente/resina foram cortados paralelamente ao longo eixo do dente, nos sentidos x e y, com secção de aproximadamente 0,8 mm 2. Foram obtidos 24 corpos de prova para cada grupo, sendo então submetidos ao teste de resistência à microtração (Rµt) em máquina de ensaio universal com velocidade de 0,5 mm/min. De acordo com Análise de Variância Fatorial, as variáveis tipo de cimento resinoso (p=0,000) e tipo de cimentação (p=0,002) foram significativas. A interação das duas varáveis não foi significativa (p=0,676). De acordo com o teste t-student (α=0,05) a média de Rµt com uso da vibração ultrassônica (13,74 MPa) foi estatisticamente superior sem aplicação da vibração ultrassônica (10,57 MPa)). A média de Rµt do RelyX Unicem (13,95 MPa) foi estatisticamente superior ao Maxcem Elite (10,36 MPa). A vibração ultrassônica aumentou a resistência de união dos cimentos resinosos autoadesivos RelyX Unicem e Maxcem Elite à dentina.
Revista brasileira de odontologia, 2018
Objective: to evaluate the bond strength of composite resin to bovine enamel after bleached surfaces were treated with two different reducing substances. Material and Methods: bovine teeth were embedded, had their buccal face planed and were divided into 4 groups (n=10). Group 1 (control) was not subjected to bleaching, acid etched and restored with adhesive and composite resin. Groups 2 to 4 were bleached with 35% hydrogen peroxide during 4 consecutive days for 40 min/session and subjected or not to the proposed surface treatments before being restored. Group 2 was bleached and restored, while Groups 3 and 4 were bleached and immersed in sodium thiosulfate or sodium ascorbate solution, respectively, before being restored. Samples were stored for 24 hours and then submitted to a microshear strength test. Results: according to the statistical tests, the bond strength results using reducing agents were similar to those of the control group and statistically different from those of the only-bleached group. Conclusion: the reducing solutions were capable of recovering the bond strength of freshly bleached teeth without statistically significant difference between them.
Microtensile bond strength of a universal adhesive to deep dentin
Brazilian dental science, 2016
Resumo objetivo: O estudo avaliou a resistência de união à microtração de um sistema adesivo universal aplicado em dentina profunda sob diferentes estratégias adesivas. Material e Métodos: 15 terceiros molares tiveram a porção coronária removida, expondo dentina profunda, sendo então divididos em 3 grupos de acordo com o sistema adesivo: G1 (controle) sistema adesivo convencional de 2 passos e condicionamento ácido total (Adper Single Bond 2, 3M ESPE); G2: sistema adesivo universal, 1 passo, autocondicionante (Scotchbond Universal, 3M ESPE); G3: sistema adesivo universal, 2 passos e condicionamento ácido total (Scotchbond Universal, 3M ESPE). As porções coronárias foram reconstruídas em resina composta e após 24 h em água destilada os espécimes foram seccionados para obtenção de 40 filetes por grupo. Os filetes foram submetidos ao teste de microtração à velocidade de 0,5 mm/ min e os dados analisados estatisticamente. results: Não foram observadas diferenças estatísticas entre os grupos, sendo as médias de resistência de união (MPa): G1 = 22,27, G2 = 22,85 and G3 = 20,3. Conclusão: O sistema adesivo universal apresentou performance similar ao sistema adesivo convencional e seu desempenho não foi afetado pela estratégia adesiva utilizada.
Objective: The aim of this study was to evaluate and compare the microtensile bond strengths of four current adhesive materials that contain different monomers at deep and superficial dentin. Material and Methods: Forty non-carious human third molars (n=5) were used in the study. Specimens were divided into two main groups according to dentin thickness as superficial and deep dentin. Groups were further divided into four subgroups in terms of the adhesive systems used: Nova Compo B Plus (NCBP), Nova Compo B (NCB), Futurabond M (FB) and Clearfil S3 Bond Plus (CS3). All specimens were bonded to resin composite and stored in 37 °C water for 9-months. Teeth were sectioned into 3 x 3 mm thick beams. Microtensile bond strength test was carried out by using a universal testing device (1 mm/min). After fracture, failure types were observed using an optical microscope and the fractured dentin surfaces were observed by a scanning electron microscopy (SEM). One-way ANOVA and Tukey tests were used to compare the adhesive system in each dentin group. An unpaired T-test was used to compare the dentin thickness in each adhesive material. Results: As compared to deep dentin, superficial dentin showed higher µTBS values in groups NCBP, FB and CS, as opposed to group NCB. Only NCB revealed higher bond strength at deep dentin layers when compared to superficial dentin. In the superficial dentin group, NCBP showed the highest bond strength value, RESUMO Objetivo: o objetivo deste estudo foi avaliar e comparar a resistência de união à microtração de quatro materiais adesivos atuais que contêm monômeros diferentes na dentina profunda e superficial. Material e Métodos: Quarenta terceiros molares humanos não cariados (n = 5) foram usados no estudo. Os espécimes foram divididos em dois grupos principais de acordo com a espessura da dentina em superficial e profunda. Os grupos foram subdivididos em quatro subgrupos quanto aos sistemas adesivos usados: Nova Compo B Plus (NCBP), Nova Compo B (NCB), Futurabond M (FB) e Clearfil S3 Bond Plus (CS3). Todos os espécimes foram aderidos à resina composta e armazenados em água a 37 ° C por 9 meses. Os dentes foram seccionados em palitos de 3 x 3 mm de espessura. O teste de microtração foi realizado com o uso de um dispositivo de teste universal (1 mm / min). Após a fratura, os tipos de falha foram observados em microscópio óptico e as superfícies de dentina fraturadas por microscopia eletrônica de varredura (MEV). Os testes ANOVA e Tukey um fator foram usados para comparar o sistema adesivo em cada grupo de dentina. Um teste T não pareado foi usado para comparar a espessura da dentina em cada material adesivo. Resultados: Em comparação com a dentina profunda, a dentina superficial apresentou maiores valores de µTBS nos grupos NCBP, FB e CS, ao contrário do grupo NCB. Apenas NCB revelou maior resistência de união na dentina profunda quando comparada à dentina superficial. No grupo de dentina superficial, NCBP apresentou o maior valor de resistência de união, enquanto NCB apresentou a menor
2015
espanolIntroduccion: La adhesion de los materiales esta intimamente relacionada con la formacion de una adecuada capa hibrida. Ademas del adhesivo, el uso de una capa de resina hidrofobica puede mejorar las propiedades de adhesion. Objetivo: Comparar la microfiltracion marginal en las restauraciones con composite en cavidades de clase II segun el adhesivo y con la aplicacion o sin la aplicacion de resina hidrofobica. Material y metodos: Los grupos experimentales fueron adhesivos sin resina hidrofobica (Prime & bond NT* y Excite F DSC*) y adhesivos con resina hidrofobica (Xeno V** y AdheSE One F*). El grado de microfiltracion fue evaluado utilizando una escala de penetracion del colorante del O al 3 . Resultados: Los adhesivos autograbanies presentan peores resultados que los que requieren grabado previo. Conclusion: El uso de una resina hidrofobica supone una mejora en la microfiltracion EnglishIntroduction: Dental adhesion of the materials is closely related to the formation of a p...
Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2005
The aim of this study was to evaluate the microtensile bond strength (TBS) and the elemental contents of the adhesive interface created to normal versus caries-affected dentin. Extracted human molars with coronal carious lesions were used in this study. A self-etching primer/adhesive system (Clearfil Protect Bond) was applied to flat dentin surfaces with normal and caries-affected dentin according to the manufacturer's instructions. After 24 h water storage, the bonded specimens were cross-sectioned and subjected to a TBS test and electron probe microanalysis for the elemental distributions [calcium (Ca), phosphorus (P), magnesium (Mg), and nitrogen (N)] of the resin-dentin interface after gold sputtercoating. The TBS to caries-affected dentin was lower than that of normal dentin. The demineralized zone of the caries-affected dentin-resin interface was thicker than that of normal dentin (approximately 3 m thick in normal dentin; 8 m thick in caries-affected dentin), and Ca and P in both types of dentin gradually increased from the interface to the underlying dentin. The caries-affected dentin had lost most of its Mg content. The distributions of the minerals, Ca, P, and Mg, at the adhesive interface to caries-affected dentin were different from normal dentin. Moreover, a N peak, which was considered to be the collagenrich zone resulting from incomplete resin infiltration of exposed collagen, was observed to be thicker within the demineralized zone of caries-affected dentin compared with normal dentin.
Effect of dentinal surface preparation on bond strength of self-etching adhesive systems
Brazilian Oral Research, 2006
The aim of this study was to evaluate the effects of dentin surface treatments on the tensile bond strength (TBS) of the self-etching primer Clearfil SE Bond (CSE) and the one-step self-etching One-Up Bond F (OUB). The exposed flat dentin surfaces of twenty-four sound third molars were prepared with diamond bur at high-speed, carbide bur at low-speed or wet ground with #600 grit SiC paper. The adhesive systems were applied to the dentin surfaces and light-cured according to the manufacturers' instructions. A 6-mm high composite crown was incrementally built-up and each increment was light-cured for 40 seconds. After being stored in water (37°C/24 h), the samples were serially sectioned parallel to the long axis, forming beams (n = 20) with a cross-sectional area of approximately 0.8 mm 2 . The specimens were tested in a Universal Testing Machine at 0.5 mm/min. The cross-sectional area was measured and the results (MPa) were analyzed by two-way ANOVA and Tukey Test (p < 0.05). Overall, the groups treated with CSE exhibited the highest TBS for all surface treatments. Dentin surfaces prepared with carbide bur at low speed reduced TBS in the CSE group; however, OUB was not affected by surface treatments. The effect of surface abrasive methods on TBS was material-dependent. DESCRIPTORS: Dentin-bonding agents; Dentin; Tensile strength.
Dentin bond strength of resin-modified light-curable calcium-silicate-based material
Revista Brasileira de Odontologia, 2020
Objetivo: este estudo teve como objetivo comparar a resistência de união à dentina de um material à base de silicato de cálcio fotopolimerizável modificado por resina (TheraCal LC®; Bisco, Schaumburg, IL, EUA) com MTA branco (WMTA®; Angelus, Londrina, PR, Brasil). Materiais e Métodos: dezesseis incisivos superiores e caninos humanos foram selecionados e três discos de 1 mm foram obtidos a partir do terço médio de cada raiz. Na superfície coronal de cada disco, dois furos de 1,2 mm de largura foram perfurados na dentina. Em seguida, os buracos artificiais foram preenchidos com um dos materiais testados: WMTA® e TheraCal LC®. As fatias dentárias preenchidas foram armazenadas em uma solução salina tamponada com fosfato (PBS) (pH 7,2) por 7 dias a 37°C. Depois disso, a avaliação do push-out foi realizada com uma ponta do êmbolo de 1,0 mm. A carga foi aplicada a uma velocidade de 0,5 mm / min até o deslocamento do selador. Os resultados foram expressos em MPa. O teste U de Mann-Whitney f...
Journal of Dentistry, 2010
Excavation Microtensile bond strength Dentine bonding agent Confocal microscopy Composite Silorane Carisolv TM gel Biosolv a b s t r a c t Objectives: To assess amounts of residual dentine retained after using three excavation techniques; the microtensile bond strengths (mTBS) to residual dentine, comparing etchrinse vs. self-etching adhesives. Methods: 42 carious molars were subdivided (N = 21) dependent upon adhesive/composite system (Adper Scotchbond 1XT and Filtek Supreme vs. Filtek Silorane adhesive and composite). Dividing into three (N = 7), dependent upon caries excavation technique employed (hand vs. chemo-mechanical: Carisolv TM gel vs. experimental enzymatic gel (SFC-V)), caries removal was assessed using visual/tactile criteria and in situ autofluorescence (AF) confocal fibre-optic micro-endoscopy (CFOME). Post-restoration/four-week hydrated storage, four 0.9 mm 2 beams per tooth underwent mTBS testing/microscopic analysis of fractured surfaces. Three cavities from each excavation group were analysed using SEM. Results: SEM revealed surface roughness with smear layer occluding tubule orifices in handexcavated samples and a reduced, variable smear layer for both chemo-mechanical systems. CFOME AF assessment indicated hand excavation left sound dentine, Carisolv TM left affected dentine and SFC-V slightly under-prepared clinically. Mean mTBS values from etchrinse samples (27 MPa (SD 3.9), hand; 22 MPa (SD 5.1), Carisolv TM ; 26 MPa (SD 4.4), SFC-V) showed statistical differences between hand and Carisolv TM groups. Mean mTBS data for self-etch samples (22 MPa (SD 3.3), hand; 27 MPa (SD 6.1), Carisolv TM ; 25 MPa (SD 4.7), SFC-V) showed significant differences between hand and Carisolv TM , and hand vs. SFC-V. Failure loci distribution in etch-rinse samples was between dentine-adhesive, within adhesive and within composite whereas self-etch samples exhibited failure predominantly between adhesive and composite. Conclusions: Data indicated that all null hypotheses were disproved.
Microleakage of contemporary composite systems in dentin cavities
Medicinski pregled, 2009
Sazetak -Mikropropustljivost iii kvalitet rubnog zatvaranja savremenih kompozitnih sistema u dentinskirn kavitetima ispitana je in vitro. Ukupno 90 ekstrahovanih nekarioznih humanih rnolara je proizvoljno podeljeno u 9 grupa i restaurirano pornocu 9 razlicitih kompozitnih sistema: Gluma CPS/Charisma. Syntac Sprint/Tetric Ceram, 3M Single Bond/Silux, Admira Bond/Admire. Optibond Solo Plus/Herculite, Trendy Bond/Saremco, Excite/Tetric Ceram, Syntac Sprint/Compoglass i Promt-LiPop.Silux. Standardizovani cilindricni kaviteti sa ivicama u dentinu (2x2mm) su preparisani na bukalnim povrsinama svakog zuba. Gled zuba je predhodno abradirana silikon-karbidnim diskovima da bi se dobila ravna povrsina II dentinu. Postavljanje kompozitnih sistema je izvcdeno uz striktno postovanje protokola proizvodaca. Nakon finiranja i poliranja kompozitnih ispuna. zubi sa ispunima su terrnociklirani u dva vodena kupatila, ternperaturne razlike od 4 do 58 DC. sa vremenom razdvajanja izmedu uranjanja od 60 sekundi. Nakon uradenih 100 temperaturnih ciklusa, apikalni otvor i krunica svakog zuba izuzcv ispuna ; njegove okolineu promeru I mm, premazani su Epoxi smolom i uronjeni u 1% rastvor metiienskog plavila. tokom cetiri casa. Nakon ispiranja tekucorn vodom. uzorci su scceni dijamantskim separir diskom sredinom ispuna u vestibulo-oralnom pravcu. Dobijene sekcije posmatrane Sll pod luporn (uvelicanje 30 x). sa umetnutim mikrometarskim razmernikom. Na svakom preseku registrovan je eventualni prodor bojc, debljina ispuna i udaljenost dna kaviteta od komore pulpe. Podaci su numericki obradivani standardnim procedurama. ANOVA i Pearson t-testorn. Statisticki znacajno nizu mikropropustljivost u okluzalnom delu kaviteta pokazali su dvofazni kompozitni sistemi Syntac Sprint/Tetric Ceram, 3Ji Single BondSilux. Admira Bond/A dm ira, Optibond Solo Plus/Herculite i trofazni kompozitni sistcm CPS Gluma.Charisma. lako je najbolje rubno zatvaranje u gingivalnom delu kaviteta pokazao kompozitni sistem 3M Single Bond/Silux. izmedu ispitanih kompozitnih sistema nije bilo statisticki znacajne razlike u mikropropustljivosti. Mikropropustljivost gingivalnog zida kavitcta II odnosu na mikropropustljivost okluzalnog zida kaviteta statisticki je znacajno veca.
Research, Society and Development, 2021
This study aimed to evaluate the effect of dentin contamination and cleaning techniques on the bond strength of resin-modified glass ionomer (RMGI)/dentin interfaces.168 bovine teeth were selected and divided into twelve groups (n = 14), according to the contaminating agent (S - no contamination; Sa - saliva; Sg - blood; H - hemostatic) and cleaning technique (S - without cleaning; A - air and water spray; P - polyacrylic acid reconditioning 26%). All specimens were restored with Riva Light Cure (SDI) ionomeric material, sectioned (1.0 × 1.0 mm toothpicks), and subjected to the microtensile bond strength test and a thermocycling regimen (CT). In the immediate analysis, all contaminated groups without cleaning had the following adhesion values when compared with the control group. After thermocycling, in the groups without cleaning only the hemostatic was identified to the control. The Sa groups maintained the immediate analysis standard, while the Sg groups were similar to the cont...
viii (p=0,0091). O protocolo adesivo com DMSO reduziu significativamente o grau de exposição de matriz colágena exposta (SBMP: 85,3% e CF: 61,5%), melhorando a qualidade da hibridização dentinária para ambos sistemas adesivos. Não houve influência negativa do DMSO na conversão monomérica do SBMP (p=0.892); já para o CF, houve aumento na conversão monomérica (p=0.033). O pré-tratamento com DMSO aumentou a resistência de união imediata do SBMP (p<0.0001). Considerando as amostras não tratadas, houve uma redução significativa (SBMP: 45,6% e CF: 36,8%) na resistência de união do SBMP (p<0.0001) e CF (p<0.0001) após dois anos de envelhecimento. Independentemente do tipo de adesivo, não houve diferença estatística na resistência de união entre valores imediatos e após 2 dois anos quando o DMSO foi empregado (p>0,05). A análise dos padrões de falha evidenciou uma tendência na redução no número de falhas adesivas após dois anos para as amostras tratadas com DMSO. Portanto, o protocolo adesivo proposto utilizando o DMSO é uma abordagem promissora para reduzir degradação da interface adesiva para os adesivos convencional e autocondicionante testados.
BMC Oral Health, 2023
Background Current study aimed to evaluate the effect of different decontamination procedures on micro-shear bond strength (μSBS) of sound (SoD) and caries-affected dentin (CAD) of two universal adhesives after blood-saliva contamination. Methods One hundred and eighty bovine anterior teeth were prepared and allocated into the respective groups according to tested dentin substrates [SoD, CAD], universal adhesives [Clearfil Bond Universal Quick (UBQ), All-Bond-Universal (ABU)], adhesive contamination stage [none, contamination before and after adhesives lightcuring], and according to decontamination procedures [no decontamination, water rinsing, adhesive rebond, Ethylenediaminetetraacetic acid (ETDA) and chlorhexidine (CHX) application]. Universal adhesives were applied according to manufacturer instructions in self-etch (SE) bonding mode. Four composite microrods were built for each tooth. Specimens were kept in distilled water for 24 hours at 37°C before testing μSBS. Four-way ANOVA and Tukey HSD tests were used for data analysis. A statistically significant difference between contamination stages of both universal adhesives at different decontamination procedures for SoD and CAD. Highest μSBS was recorded for UBQ control group at SoD, while the least was recorded for light-cured ABU upon water rinsing decontamination procedure of CAD. Conclusions Proper cavity isolation is mandatory to avoid possible contamination which can dramatically affect μSBS. CHX is a potent cavity decontaminant that can restore different dentin substrates bond strength. EDTA presents a promising substitute. UBQ adhesive showed better bonding performance than ABU to both dentin substrates. Application of regular cavity decontamination approaches is highly advised in daily practice to avoid possible detrimental effect of accidental cavity contamination.
2015
Purpose: To evaluate the effect of using separating medium and its type on the microtensile bond strength of indirect resin composite restoration to dentin clinically. Materials and methods: Standard 24 MOD cavities were prepared in the upper first premolars for the selected patients by one operator and restored using indirect resin composite (Grandio So Inlay System, VOCO, Germany). Inlays were constructed outside the patient mouth either on silicone die (according to manufacture instructions) or on stone die using two different separating media (glycerin or Vaseline). The fitting surface of the inlay was sandblasted, silanated and bonded before cementation. Teeth were treated with a dual cured adhesive (Futurabond DC, VOCO, Germany) and resin cement (Bifix QM, VOCO, Germany) was used for cementation. After the assigned time (either 24 hours or 3 months) the restored teeth were extracted atraumatically. They were prepared for microtensile bond strength testing which was performed u...