Magáli Guimarães - Academia.edu (original) (raw)

Papers by Magáli Guimarães

Research paper thumbnail of Topical Intrapocket Anesthesia

Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) red... more Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) reduces pain, many patients report fear and prolonged numbness of adjacent tissues. The aim of the present study was to compare the effects of a eutectic mixture containing 25 mg/g of lidocaine and 25 mg/g of prilocaine, injectable 2 % lidocaine, topical 2 % benzocaine and a placebo substance on reducing pain during SRP. In this randomized, split-mouth, masked clinical trial, thirty-two patients presenting more than two teeth with probing depth and clinical attachment level ≥5 mm in at least 4 sextants were randomly allocated to four groups: EMLA®; injectable 2 % lidocaine; topical 2% benzocaine and placebo. Pain and discomfort were measured using a visual analogue scale (VAS) and verbal scale (VS). Repeated-measures analysis of variance and Poisson regression were used for analysis. Patient satisfaction with the anesthesia was determined at the end of each treatment session. VAS and VS sco...

Research paper thumbnail of Coroa total de resina composta: procedimento alternativo na reconstrução do elemento dental

O presente trabalho demonstra procedimentos laboratoriais e clinicos da confeccao de uma coroa un... more O presente trabalho demonstra procedimentos laboratoriais e clinicos da confeccao de uma coroa unitaria de resina composta. O protocolo de confeccao da referida peca protetica foi definido por um estudo “in vitro” desenvolvido na disciplina de Materiais Dentarios da UFSM, a partir da utilizacao de 4 molares higidos. O procedimento “in vivo” e exemplificado atraves de relato de caso clinico realizado na Clinica Integrada III da UFSM. A tecnica sugerida e um procedimento alternativo na reconstrucao do elemento dental que caracteriza ser de baixo custo e facil elaboracao, suprindo as necessidades biologicas, esteticas, funcionais e economicas do paciente. Termos de Indexacao: resina composta; coroa total.

Research paper thumbnail of Topical Intrapocket Anesthesia During Scaling and Root Planing : a Randomized C l i n i c a l T r i a l

Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) red... more Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) reduces pain, many patients report fear and prolonged numbness of adjacent tissues. The aim of the present study was to compare the effects of a eutectic mixture containing 25 mg/g of lidocaine and 25 mg/g of prilocaine, injectable 2% lidocaine, topical 2% benzocaine and a placebo substance on reducing pain during SRP. In this randomized, split-mouth, masked clinical trial, thirty-two patients presenting more than two teeth with probing depth and clinical attachment level ≥5 mm in at least 4 sextants were randomly allocated to four groups: EMLA ® ; injectable 2% lidocaine; topical 2% benzocaine and placebo. Pain and discomfort were measured using a visual analogue scale (VAS) and verbal scale (VS). Repeated-measures analysis of variance and Poisson regression were used for analysis. Patient satisfaction with the anesthesia was determined at the end of each treatment session. VAS and VS scores did not differ between injectable 2% lidocaine and EMLA (p>0.05) and both substances showed significantly better pain control compared to 2% benzocaine and placebo (p<0.05). 93.7% and 81.2% of the individuals were satisfied with the injectable anesthetic and EMLA, respectively (p=0.158). Dissatisfaction with benzocaine and placebo was approximately 10 times greater than injectable anesthesia (p=0.001). In conclusion, EMLA showed an equivalent effect on pain control when compared to the injectable anesthesia and performed better than 2% benzocaine in SRP. Thus, EMLA is a viable anesthetic option during scaling and root planning, despite the frequent need for second application.

Research paper thumbnail of Supervisão de espaço na dentição mista e sua correlação com o apinhamento dentário na região anterior do arco inferior: uma filosofia de tratamento

Research paper thumbnail of Avaliação da influência de diferentes superfícies na adesão e proliferação de osteoblastos humanos

Atualmente, o foco de muitas pesquisas cientificas em Implantodontia esta voltado para a modifica... more Atualmente, o foco de muitas pesquisas cientificas em Implantodontia esta voltado para a modificacao da superficie do titânio na busca de alternativas que proporcionem maior rapidez e qualidade no processo de osseointegracao. A osseointegracao e um fenomeno que acontece fundamentalmente atraves da resposta interfacial das celulas osseas em contato com a superficie do titânio. Diferentes metodos de tratamento podem ser utilizados para modificar as propriedades topograficas e quimicas da superficie do titânio a fim de otimizar as reacoes tecido-implante. Neste estudo foi avaliada a influencia de diferentes tratamentos de superficie do titânio na adesao e proliferacao de osteoblastos humanos, atraves da analise quantitativa do numero de celulas aderidas em diferentes periodos de cultura celular. Para isso, 40 discos de titânio grau II, comercialmente puro, de 15mm de diâmetro e 1mm de espessura, foram divididos em quatro grupos conforme a caracterizacao de sua superficie: G1. maquinada...

Research paper thumbnail of Influência da aplicação local de bisfosfonato na osseointegração de implantes de titânio instalados em tíbia de coelho

Research paper thumbnail of Impacto Do Uso De Próteses Totais Na Qualidade De Vida De Idosos

E importante avaliar a satisfacao do paciente usuario de proteses totais, principalmente em idoso... more E importante avaliar a satisfacao do paciente usuario de proteses totais, principalmente em idosos, que tendem a se sentir menos valorizados e mais dependentes, sendo a perda dos dentes um fator que pode influenciar na autoestima. Objetivou-se avaliar as dimensoes psicologicas, fisicas e sociais do impacto do uso de proteses dentarias totais nos idosos. A amostra consistiu-se de 50 pacientes, acima de 60 anos, da cidade de Santa Maria RS– Brasil. A contribuicao dos pacientes deu-se atraves do preenchimento de um questionario (OHIP-14), o qual investiga dimensoes relacionadas ao impacto da condicao de saude bucal na qualidade de vida. Observou-se que dor fisica e o aspecto relacionado ao uso de proteses totais que teve estatisticamente maior impacto na qualidade de vida de idosos, enquanto a inabilidade social e a incapacidade tiveram estatisticamente menor influencia. Conclui-se que o uso de proteses totais tem influencia na qualidade de vida de idosos.

Research paper thumbnail of Treatment of myofascial pain with a rapid laser therapy protocol compared to occlusal splint: A double-blind, randomized clinical trial

CRANIO®

OBJECTIVE To compare the effect of a rapid low-level laser therapy (LLLT) protocol to Michigan oc... more OBJECTIVE To compare the effect of a rapid low-level laser therapy (LLLT) protocol to Michigan occlusal splint in the treatment of myofascial pain, as well as to evaluate their impact on Oral Health-Related Quality of Life (OHRQoL). METHODS Thirty participants were randomly allocated into three groups: G1: occlusal splint (n = 11), G2: LLLT (n = 10), and G3: LLLT placebo (n = 9). LLLT and placebo were applied in the points of pain upon palpation. RESULTS G1 presented improvement in pain (p = 0.014) and in the diagnosis of myofascial pain (p = 0.008), while G2 and G3 did not. Regarding OHRQoL, G1 and G2 presented significant improvement (p = 0.005, in both), whereas, G3 did not. CONCLUSION Michigan occlusal splint was effective in reducing pain and improving OHRQoL. Treatment with the rapid LLLT protocol only provided an improvement in OHRQoL.

Research paper thumbnail of Comparative Analysis of Different Chemical Methods for Removing Biofilm from Complete Dentures

Journal of Dentistry, Oral Disorders & Therapy

The aim of this study was to make a comparative evaluation of three chemical substances for clean... more The aim of this study was to make a comparative evaluation of three chemical substances for cleaning complete dentures, as regards their efficacy of biofilm removal. The sample consisted of 20 maxillary complete dentures. The dentures were randomly divided into groups according to the chemical cleaning method to be used: Group 1-water (control), Group 2-sodium hypochlorite solution, Group 3-sodium perborate (Corega Tabs®) and Group 4-2% chlorhexidine. The groups were evaluated in terms of the quantity of biofilm before and after application of the chemical cleaning method by applying a revealer, and later, analysed by the Denture Hygiene Index (DHI). The results showed that only sodium hypochlorite solution was effective for biofilm removal. There was statistically significant difference among the groups, pointing out greater efficacy of the method used in Group 2 in comparison with Groups 1 and 4. Group 3 did not differ statistically from any other group evaluated. The results allowed to conclude that sodium hypochlorite solution is the most efficient chemical agent for removing biofilm from complete dentures. However, when used alone, all the tested chemical cleaning methods were incapable of eliminating all the biofilm from denture surfaces.

Research paper thumbnail of Orthodontic shear bond strength to porcelain surface in wet conditions

Revista Odonto Ciência, 2016

Objective: To evaluate the shear bond strength of orthodontic accessories bonded to a porcelain s... more Objective: To evaluate the shear bond strength of orthodontic accessories bonded to a porcelain surface after storage in water.Methods: One-hundredand-twenty feldspathic porcelain discs were divided into 4 groups, according to the surface treatment: Group 1 – 37% phosphoric acid etching; Group 2 – 10% fluorhydric acid; Group 3 – 37% phosphoric acid and silane application; Group 4 – 10% fluorhydric acid and silane application. After the accessories were bonded, the sample was divided into two subgroups, according to the time interval of storage in distilled water: Control – 24 hours; and Test – 150 days. Shear bond strength was determined using a universal test machine, and failure type was verified by scanning electron microscopy.Results: In the test groups there was reduction in shear bond strength, particularly when silane was used. Test Groups 2 and 4 presented shear bond strength values within those proposed as adequate for orthodontic bonding. Groups 1 and 3 presented adhesive...

Research paper thumbnail of Topical Intrapocket Anesthesia During Scaling and Root Planing: a Randomized Clinical Trial

Brazilian Dental Journal, 2015

Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) red... more Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) reduces pain, many patients report fear and prolonged numbness of adjacent tissues. The aim of the present study was to compare the effects of a eutectic mixture containing 25 mg/g of lidocaine and 25 mg/g of prilocaine, injectable 2% lidocaine, topical 2% benzocaine and a placebo substance on reducing pain during SRP. In this randomized, split-mouth, masked clinical trial, thirty-two patients presenting more than two teeth with probing depth and clinical attachment level ≥5 mm in at least 4 sextants were randomly allocated to four groups: EMLA(r); injectable 2% lidocaine; topical 2% benzocaine and placebo. Pain and discomfort were measured using a visual analogue scale (VAS) and verbal scale (VS). Repeated-measures analysis of variance and Poisson regression were used for analysis. Patient satisfaction with the anesthesia was determined at the end of each treatment session. VAS and VS scor...

Research paper thumbnail of Orthodontic bonding to porcelain surfaces: in vitro shear bond strength

Revista Odonto Ciência, 2012

Research paper thumbnail of Impacto do uso de próteses dentárias totais na qualidade de vida de idosos

Revista Brasileira de Qualidade de Vida, 2013

Este trabalho teve como objetivo avaliar as dimensões psicológicas, físicas e sociais do impacto ... more Este trabalho teve como objetivo avaliar as dimensões psicológicas, físicas e sociais do impacto do uso de próteses dentárias totais na qualidade de vida de idosos. MÉTODOS: A amostra consistiu de 50 pacientes usuários de prótese total, com idade acima de 60 anos, moradores da cidade de Santa Maria-RS, Brasil. A contribuição dos pacientes deu-se através do preenchimento do Oral Health Impact Profile contendo 14 questões (OHIP-14versão na língua protuguesa), o qual investiga sete dimensões relacionadas ao impacto da condição de saúde bucal na qualidade de vida: limitação funcional, dor física, desconforto psicológico, inabilidade física, inabilidade psicológica, inabilidade social e incapacidade. Para cada uma das 14 questões foi utilizada uma escala de 5 pontos, onde a resposta determina o escore de cada questãoquanto mais alto o valor gerado, maior o impacto do aspecto questionado. Os dados coletados foram analisados através de estatística descritiva e comparados através do teste de Mann-Whitney (α=0.05). RESULTADOS: Observou-se que dor física é o aspecto relacionado ao uso de próteses totais que teve estatisticamente maior impacto na qualidade de vida de idosos, enquanto a inabilidade social e a incapacidade tiveram estatisticamente menor influência. CONCLUSÕES: Conclui-se que o uso de próteses totais tem influência na qualidade de vida de idosos. PALAVRAS-CHAVE: Prótese total. Qualidade de vida. Saúde do idoso.

Research paper thumbnail of Evaluation of tensile strength of different configurations of orthodontic retraction loops for obtaining optimized forces

SUMMARY The aim of this study was to analyze the mechanical behavior of different orthodontic ret... more SUMMARY The aim of this study was to analyze the mechanical behavior of different orthodontic retraction loops. Two designs of orthodontic loops for closing space were analyzed: teardrop-shaped (T) and circle-shaped loop (C), of two different heights (6 and 8 mm), and two types of orthodontic wires (stainless steel - 0.19' × 0.25'; TMA - titanium molybdenum alloy - 0.016' × 0.016'). The sample consisted of 80 loops, divided into 8 groups determined by the combination shape/height/type of wire, which were submitted to tensile testing at a speed of 2 mm/min., to measure the quantity of force generated when activated in the interval of 0.75 mm and 2.25 mm. The results were submitted to the ANOVA and Tukey statistical tests to com- pare the groups, and the Student's-t test to compare the means of two groups. Statistically higher values were observed for the size 6 mm, circle shape and stainless steel composition. The group "teardrop-8 mm-TMA" together ...

Research paper thumbnail of Diphosphonate Immobilization on Hydroxyapatite-Coated Titanium—Method Description

Implant Dentistry, 2013

The aim of this study was to promote the immobilization of a bone activity biomodulator (diphosph... more The aim of this study was to promote the immobilization of a bone activity biomodulator (diphosphonate) on titanium, commonly used in implant dentistry, to provide a local method of delivering this drug during the osseointegration process. The implant material used in this study was commercially wrought titanium (Ticp), 99.9 mass%, grade II. From this material, discs of 15 mm diameter and 1 mm thick were fabricated. These discs underwent 3 sequential surface modification processes: (a) acid-etching, (b) hydroxyapatite coating, and (c) immersion in disodium pamidronate solution. Scanning electron microscopy, X-ray fluorescence, and X-ray diffraction analyses were carried out to characterize the surface created. The results of these analyses demonstrate that the acid-etching process, followed by the sintering of hydroxyapatite particles and immersion in a solution of disodium pamidronate were effective for diphosphonate immobilization on the titanium surface. The methodology used in this study allows us to conclude that immersion of hydroxyapatite-coated titanium in a solution of diphosphonate was efficient to promote the immobilization of this drug on the titanium surface.

Research paper thumbnail of Influence of laser-welding and electroerosion on passive fit of implant-supported prosthesis

Research paper thumbnail of Patient's perception on mini-screws used for molar distalization

Research paper thumbnail of Topical Intrapocket Anesthesia

Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) red... more Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) reduces pain, many patients report fear and prolonged numbness of adjacent tissues. The aim of the present study was to compare the effects of a eutectic mixture containing 25 mg/g of lidocaine and 25 mg/g of prilocaine, injectable 2 % lidocaine, topical 2 % benzocaine and a placebo substance on reducing pain during SRP. In this randomized, split-mouth, masked clinical trial, thirty-two patients presenting more than two teeth with probing depth and clinical attachment level ≥5 mm in at least 4 sextants were randomly allocated to four groups: EMLA®; injectable 2 % lidocaine; topical 2% benzocaine and placebo. Pain and discomfort were measured using a visual analogue scale (VAS) and verbal scale (VS). Repeated-measures analysis of variance and Poisson regression were used for analysis. Patient satisfaction with the anesthesia was determined at the end of each treatment session. VAS and VS sco...

Research paper thumbnail of Coroa total de resina composta: procedimento alternativo na reconstrução do elemento dental

O presente trabalho demonstra procedimentos laboratoriais e clinicos da confeccao de uma coroa un... more O presente trabalho demonstra procedimentos laboratoriais e clinicos da confeccao de uma coroa unitaria de resina composta. O protocolo de confeccao da referida peca protetica foi definido por um estudo “in vitro” desenvolvido na disciplina de Materiais Dentarios da UFSM, a partir da utilizacao de 4 molares higidos. O procedimento “in vivo” e exemplificado atraves de relato de caso clinico realizado na Clinica Integrada III da UFSM. A tecnica sugerida e um procedimento alternativo na reconstrucao do elemento dental que caracteriza ser de baixo custo e facil elaboracao, suprindo as necessidades biologicas, esteticas, funcionais e economicas do paciente. Termos de Indexacao: resina composta; coroa total.

Research paper thumbnail of Topical Intrapocket Anesthesia During Scaling and Root Planing : a Randomized C l i n i c a l T r i a l

Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) red... more Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) reduces pain, many patients report fear and prolonged numbness of adjacent tissues. The aim of the present study was to compare the effects of a eutectic mixture containing 25 mg/g of lidocaine and 25 mg/g of prilocaine, injectable 2% lidocaine, topical 2% benzocaine and a placebo substance on reducing pain during SRP. In this randomized, split-mouth, masked clinical trial, thirty-two patients presenting more than two teeth with probing depth and clinical attachment level ≥5 mm in at least 4 sextants were randomly allocated to four groups: EMLA ® ; injectable 2% lidocaine; topical 2% benzocaine and placebo. Pain and discomfort were measured using a visual analogue scale (VAS) and verbal scale (VS). Repeated-measures analysis of variance and Poisson regression were used for analysis. Patient satisfaction with the anesthesia was determined at the end of each treatment session. VAS and VS scores did not differ between injectable 2% lidocaine and EMLA (p>0.05) and both substances showed significantly better pain control compared to 2% benzocaine and placebo (p<0.05). 93.7% and 81.2% of the individuals were satisfied with the injectable anesthetic and EMLA, respectively (p=0.158). Dissatisfaction with benzocaine and placebo was approximately 10 times greater than injectable anesthesia (p=0.001). In conclusion, EMLA showed an equivalent effect on pain control when compared to the injectable anesthesia and performed better than 2% benzocaine in SRP. Thus, EMLA is a viable anesthetic option during scaling and root planning, despite the frequent need for second application.

Research paper thumbnail of Supervisão de espaço na dentição mista e sua correlação com o apinhamento dentário na região anterior do arco inferior: uma filosofia de tratamento

Research paper thumbnail of Avaliação da influência de diferentes superfícies na adesão e proliferação de osteoblastos humanos

Atualmente, o foco de muitas pesquisas cientificas em Implantodontia esta voltado para a modifica... more Atualmente, o foco de muitas pesquisas cientificas em Implantodontia esta voltado para a modificacao da superficie do titânio na busca de alternativas que proporcionem maior rapidez e qualidade no processo de osseointegracao. A osseointegracao e um fenomeno que acontece fundamentalmente atraves da resposta interfacial das celulas osseas em contato com a superficie do titânio. Diferentes metodos de tratamento podem ser utilizados para modificar as propriedades topograficas e quimicas da superficie do titânio a fim de otimizar as reacoes tecido-implante. Neste estudo foi avaliada a influencia de diferentes tratamentos de superficie do titânio na adesao e proliferacao de osteoblastos humanos, atraves da analise quantitativa do numero de celulas aderidas em diferentes periodos de cultura celular. Para isso, 40 discos de titânio grau II, comercialmente puro, de 15mm de diâmetro e 1mm de espessura, foram divididos em quatro grupos conforme a caracterizacao de sua superficie: G1. maquinada...

Research paper thumbnail of Influência da aplicação local de bisfosfonato na osseointegração de implantes de titânio instalados em tíbia de coelho

Research paper thumbnail of Impacto Do Uso De Próteses Totais Na Qualidade De Vida De Idosos

E importante avaliar a satisfacao do paciente usuario de proteses totais, principalmente em idoso... more E importante avaliar a satisfacao do paciente usuario de proteses totais, principalmente em idosos, que tendem a se sentir menos valorizados e mais dependentes, sendo a perda dos dentes um fator que pode influenciar na autoestima. Objetivou-se avaliar as dimensoes psicologicas, fisicas e sociais do impacto do uso de proteses dentarias totais nos idosos. A amostra consistiu-se de 50 pacientes, acima de 60 anos, da cidade de Santa Maria RS– Brasil. A contribuicao dos pacientes deu-se atraves do preenchimento de um questionario (OHIP-14), o qual investiga dimensoes relacionadas ao impacto da condicao de saude bucal na qualidade de vida. Observou-se que dor fisica e o aspecto relacionado ao uso de proteses totais que teve estatisticamente maior impacto na qualidade de vida de idosos, enquanto a inabilidade social e a incapacidade tiveram estatisticamente menor influencia. Conclui-se que o uso de proteses totais tem influencia na qualidade de vida de idosos.

Research paper thumbnail of Treatment of myofascial pain with a rapid laser therapy protocol compared to occlusal splint: A double-blind, randomized clinical trial

CRANIO®

OBJECTIVE To compare the effect of a rapid low-level laser therapy (LLLT) protocol to Michigan oc... more OBJECTIVE To compare the effect of a rapid low-level laser therapy (LLLT) protocol to Michigan occlusal splint in the treatment of myofascial pain, as well as to evaluate their impact on Oral Health-Related Quality of Life (OHRQoL). METHODS Thirty participants were randomly allocated into three groups: G1: occlusal splint (n = 11), G2: LLLT (n = 10), and G3: LLLT placebo (n = 9). LLLT and placebo were applied in the points of pain upon palpation. RESULTS G1 presented improvement in pain (p = 0.014) and in the diagnosis of myofascial pain (p = 0.008), while G2 and G3 did not. Regarding OHRQoL, G1 and G2 presented significant improvement (p = 0.005, in both), whereas, G3 did not. CONCLUSION Michigan occlusal splint was effective in reducing pain and improving OHRQoL. Treatment with the rapid LLLT protocol only provided an improvement in OHRQoL.

Research paper thumbnail of Comparative Analysis of Different Chemical Methods for Removing Biofilm from Complete Dentures

Journal of Dentistry, Oral Disorders & Therapy

The aim of this study was to make a comparative evaluation of three chemical substances for clean... more The aim of this study was to make a comparative evaluation of three chemical substances for cleaning complete dentures, as regards their efficacy of biofilm removal. The sample consisted of 20 maxillary complete dentures. The dentures were randomly divided into groups according to the chemical cleaning method to be used: Group 1-water (control), Group 2-sodium hypochlorite solution, Group 3-sodium perborate (Corega Tabs®) and Group 4-2% chlorhexidine. The groups were evaluated in terms of the quantity of biofilm before and after application of the chemical cleaning method by applying a revealer, and later, analysed by the Denture Hygiene Index (DHI). The results showed that only sodium hypochlorite solution was effective for biofilm removal. There was statistically significant difference among the groups, pointing out greater efficacy of the method used in Group 2 in comparison with Groups 1 and 4. Group 3 did not differ statistically from any other group evaluated. The results allowed to conclude that sodium hypochlorite solution is the most efficient chemical agent for removing biofilm from complete dentures. However, when used alone, all the tested chemical cleaning methods were incapable of eliminating all the biofilm from denture surfaces.

Research paper thumbnail of Orthodontic shear bond strength to porcelain surface in wet conditions

Revista Odonto Ciência, 2016

Objective: To evaluate the shear bond strength of orthodontic accessories bonded to a porcelain s... more Objective: To evaluate the shear bond strength of orthodontic accessories bonded to a porcelain surface after storage in water.Methods: One-hundredand-twenty feldspathic porcelain discs were divided into 4 groups, according to the surface treatment: Group 1 – 37% phosphoric acid etching; Group 2 – 10% fluorhydric acid; Group 3 – 37% phosphoric acid and silane application; Group 4 – 10% fluorhydric acid and silane application. After the accessories were bonded, the sample was divided into two subgroups, according to the time interval of storage in distilled water: Control – 24 hours; and Test – 150 days. Shear bond strength was determined using a universal test machine, and failure type was verified by scanning electron microscopy.Results: In the test groups there was reduction in shear bond strength, particularly when silane was used. Test Groups 2 and 4 presented shear bond strength values within those proposed as adequate for orthodontic bonding. Groups 1 and 3 presented adhesive...

Research paper thumbnail of Topical Intrapocket Anesthesia During Scaling and Root Planing: a Randomized Clinical Trial

Brazilian Dental Journal, 2015

Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) red... more Although the use of injectable anesthesia prior to subgingival scaling and root planing (SRP) reduces pain, many patients report fear and prolonged numbness of adjacent tissues. The aim of the present study was to compare the effects of a eutectic mixture containing 25 mg/g of lidocaine and 25 mg/g of prilocaine, injectable 2% lidocaine, topical 2% benzocaine and a placebo substance on reducing pain during SRP. In this randomized, split-mouth, masked clinical trial, thirty-two patients presenting more than two teeth with probing depth and clinical attachment level ≥5 mm in at least 4 sextants were randomly allocated to four groups: EMLA(r); injectable 2% lidocaine; topical 2% benzocaine and placebo. Pain and discomfort were measured using a visual analogue scale (VAS) and verbal scale (VS). Repeated-measures analysis of variance and Poisson regression were used for analysis. Patient satisfaction with the anesthesia was determined at the end of each treatment session. VAS and VS scor...

Research paper thumbnail of Orthodontic bonding to porcelain surfaces: in vitro shear bond strength

Revista Odonto Ciência, 2012

Research paper thumbnail of Impacto do uso de próteses dentárias totais na qualidade de vida de idosos

Revista Brasileira de Qualidade de Vida, 2013

Este trabalho teve como objetivo avaliar as dimensões psicológicas, físicas e sociais do impacto ... more Este trabalho teve como objetivo avaliar as dimensões psicológicas, físicas e sociais do impacto do uso de próteses dentárias totais na qualidade de vida de idosos. MÉTODOS: A amostra consistiu de 50 pacientes usuários de prótese total, com idade acima de 60 anos, moradores da cidade de Santa Maria-RS, Brasil. A contribuição dos pacientes deu-se através do preenchimento do Oral Health Impact Profile contendo 14 questões (OHIP-14versão na língua protuguesa), o qual investiga sete dimensões relacionadas ao impacto da condição de saúde bucal na qualidade de vida: limitação funcional, dor física, desconforto psicológico, inabilidade física, inabilidade psicológica, inabilidade social e incapacidade. Para cada uma das 14 questões foi utilizada uma escala de 5 pontos, onde a resposta determina o escore de cada questãoquanto mais alto o valor gerado, maior o impacto do aspecto questionado. Os dados coletados foram analisados através de estatística descritiva e comparados através do teste de Mann-Whitney (α=0.05). RESULTADOS: Observou-se que dor física é o aspecto relacionado ao uso de próteses totais que teve estatisticamente maior impacto na qualidade de vida de idosos, enquanto a inabilidade social e a incapacidade tiveram estatisticamente menor influência. CONCLUSÕES: Conclui-se que o uso de próteses totais tem influência na qualidade de vida de idosos. PALAVRAS-CHAVE: Prótese total. Qualidade de vida. Saúde do idoso.

Research paper thumbnail of Evaluation of tensile strength of different configurations of orthodontic retraction loops for obtaining optimized forces

SUMMARY The aim of this study was to analyze the mechanical behavior of different orthodontic ret... more SUMMARY The aim of this study was to analyze the mechanical behavior of different orthodontic retraction loops. Two designs of orthodontic loops for closing space were analyzed: teardrop-shaped (T) and circle-shaped loop (C), of two different heights (6 and 8 mm), and two types of orthodontic wires (stainless steel - 0.19' × 0.25'; TMA - titanium molybdenum alloy - 0.016' × 0.016'). The sample consisted of 80 loops, divided into 8 groups determined by the combination shape/height/type of wire, which were submitted to tensile testing at a speed of 2 mm/min., to measure the quantity of force generated when activated in the interval of 0.75 mm and 2.25 mm. The results were submitted to the ANOVA and Tukey statistical tests to com- pare the groups, and the Student's-t test to compare the means of two groups. Statistically higher values were observed for the size 6 mm, circle shape and stainless steel composition. The group "teardrop-8 mm-TMA" together ...

Research paper thumbnail of Diphosphonate Immobilization on Hydroxyapatite-Coated Titanium—Method Description

Implant Dentistry, 2013

The aim of this study was to promote the immobilization of a bone activity biomodulator (diphosph... more The aim of this study was to promote the immobilization of a bone activity biomodulator (diphosphonate) on titanium, commonly used in implant dentistry, to provide a local method of delivering this drug during the osseointegration process. The implant material used in this study was commercially wrought titanium (Ticp), 99.9 mass%, grade II. From this material, discs of 15 mm diameter and 1 mm thick were fabricated. These discs underwent 3 sequential surface modification processes: (a) acid-etching, (b) hydroxyapatite coating, and (c) immersion in disodium pamidronate solution. Scanning electron microscopy, X-ray fluorescence, and X-ray diffraction analyses were carried out to characterize the surface created. The results of these analyses demonstrate that the acid-etching process, followed by the sintering of hydroxyapatite particles and immersion in a solution of disodium pamidronate were effective for diphosphonate immobilization on the titanium surface. The methodology used in this study allows us to conclude that immersion of hydroxyapatite-coated titanium in a solution of diphosphonate was efficient to promote the immobilization of this drug on the titanium surface.

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