Élcio Mário Faria-Júnior1, Ricardo Danil Guiraldo2, Sandrine Bittencourt Berger3, Américo Bortolazzo Correr4, Lourenço Correr-Sobrinho5, Edwin Fernando Ruiz Contreras6, Murilo Baena Lopes3. 1. Assistant professor, Department of Restorative Dentistry, School of Dentistry, University of Western São Paulo, Presidente Prudente, São Paulo, Brazil. 2. Professor, Department of Restorative Dentistry, School of Dentistry, University of North Paraná, Londrina, Paraná, Brazil. Electronic address: rdguiraldo@gmail.com. 3. Professor, Department of Restorative Dentistry, School of Dentistry, University of North Paraná, Londrina, Paraná, Brazil. 4. Associate professor, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil. 5. Professor, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil. 6. Associate professor, Department of Restorative Dentistry, School of Dentistry, State University of Londrina, Londrina, Paraná, Brazil.
Abstract
INTRODUCTION: The aim of this study was to evaluate the surface roughness and morphology of enamel with a surface roughness tester and scanning electron microscopy after the removal of metal brackets and polishing. METHODS:Ten orthodontic patients were selected for the study. At the conclusion of orthodontic treatment, their metal brackets were removed. For each patient, teeth on one side of the mouth were randomly chosen for finishing and polishing with aluminum oxide discs (n = 10). Teeth on the other side were finished with multilaminated carbide burs (n = 10). Dental replicas (before and after tooth polishing) were obtained with epoxy resin. Three surface roughness measurements were made in different directions with an angle of 120° among them, and a mean for each dental replica was calculated. The roughness data were statistically evaluated by repeated-measurements analysis of variance. Three specimens from each group were also used for scanning electron microscopy analysis. RESULTS: After resin removal, the average roughness in the carbide bur group (0.31 μm) was significantly greater than that in the aluminum oxide disc group (0.25 μm). CONCLUSIONS: The aluminum oxide disc polishing system resulted in less enamel roughness than did the multilaminated carbide bur system.
RCT Entities:
INTRODUCTION: The aim of this study was to evaluate the surface roughness and morphology of enamel with a surface roughness tester and scanning electron microscopy after the removal of metal brackets and polishing. METHODS: Ten orthodontic patients were selected for the study. At the conclusion of orthodontic treatment, their metal brackets were removed. For each patient, teeth on one side of the mouth were randomly chosen for finishing and polishing with aluminum oxide discs (n = 10). Teeth on the other side were finished with multilaminated carbide burs (n = 10). Dental replicas (before and after tooth polishing) were obtained with epoxy resin. Three surface roughness measurements were made in different directions with an angle of 120° among them, and a mean for each dental replica was calculated. The roughness data were statistically evaluated by repeated-measurements analysis of variance. Three specimens from each group were also used for scanning electron microscopy analysis. RESULTS: After resin removal, the average roughness in the carbide bur group (0.31 μm) was significantly greater than that in the aluminum oxide disc group (0.25 μm). CONCLUSIONS: The aluminum oxide disc polishing system resulted in less enamel roughness than did the multilaminated carbide bur system.
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