Authors
Advisor(s)
Abstract(s)
Introdução: Os danos no esmalte resultantes da ortodontia fixa, embora sejam inevitáveis e irreversíveis, podem ser minimizados se escolhermos um correcto protocolo.
Objectivos: Identificar qual o método mais eficaz e adequado para a remoção dos brackets e do compósito residual e aferir considerações relativamente aos danos causados nos dentes resultantes do tratamento ortodôntico com aparelhos fixos.
Material e métodos: Foram utilizados 40 dentes onde foram colados brackets segundo o protocolo standard. Dos 40 dentes, 20 brackets foram removidos com o alicate universal de Weingart e os restantes com um alicate removedor de brackets. Após a remoção dos brackets os dentes foram analisados e fotografados ao microscópio óptico e foi quantificado o adesivo que ficou na superfície de esmalte segundo o Adhesive Remnant Index (ARI). Dentro de cada grupo de 20, 10 dentes foram removidos com uma broca de carbonato de tungsténio montada em contra-ângulo e os outros 10 com uma broca de carbonato de tungsténio montada em turbina. No final da remoção do compósito residual, todos os dentes foram novamente analisados e fotografados e o dano no esmalte quantificado de acordo com o Enamel Surface Index (ESI).
Resultados: Nos 20 dentes em que o bracket foi removido com o alicate universal de Weingart verificou-se uma maior percentagem do ARI 2. O mesmo foi verificado com o alicate removedor de brackets. Na remoção do compósito com broca de turbina e contra-ângulo observamos uma maior prevalência do ERI 0.
Conclusão: Recomenda-se a utilização do alicate universal de Weingart por ser mais fácil a remoção do bracket e da broca montada em turbina por ser mais eficiente na remoção do compósito residual.
Introduction: Although damaging the enamel by using fixed orthodontics is inevitable and irreversible, it can be minimized if the proper protocol is chosen. Objective: Identify the most effective and suitable method for removing brackets and the residual composite, as well as, assess the teeth’s damage caused by orthodontic treatment with fixed appliances. Material and methods: 40 teeth had been used where they had been glue brackets according to standard protocol. Of 40 teeth, 20 brackets had been removed with the Weingart’s universal pliers and the remains with bracket removal pliers. After the removal of brackets the teeth had been analyzed and photographed to the optic microscope and were quantified the adhesive that was in the enamel surface according to Adhesive Remnant Index (ARI). Inside of each group of 20, 10 teeth had been removed with a tungsten carbide bur mounted on handpiece and the others 10 with a tungsten carbide bur mounted on turbine. In the end of the removal of the residual composite, all the teeth again had been analyzed and photographed and the damage in enamel was quantified in accordance with Enamel Surface Index (ESI). Results: Despite the method used to remove the brackets, either with the Weingart’s universal pliers or with the bracket removal pliers, there was a higher percentage of the ARI 2. Both turbine or handpiece removal of the residual composite led to a higher prevalence of the ERI 0. Conclusion: The author’s recommendation is to use Weingart’s universal pliers to remove the brackets and use the tungsten carbide bur mounted on a turbine to remove the residual composite
Introduction: Although damaging the enamel by using fixed orthodontics is inevitable and irreversible, it can be minimized if the proper protocol is chosen. Objective: Identify the most effective and suitable method for removing brackets and the residual composite, as well as, assess the teeth’s damage caused by orthodontic treatment with fixed appliances. Material and methods: 40 teeth had been used where they had been glue brackets according to standard protocol. Of 40 teeth, 20 brackets had been removed with the Weingart’s universal pliers and the remains with bracket removal pliers. After the removal of brackets the teeth had been analyzed and photographed to the optic microscope and were quantified the adhesive that was in the enamel surface according to Adhesive Remnant Index (ARI). Inside of each group of 20, 10 teeth had been removed with a tungsten carbide bur mounted on handpiece and the others 10 with a tungsten carbide bur mounted on turbine. In the end of the removal of the residual composite, all the teeth again had been analyzed and photographed and the damage in enamel was quantified in accordance with Enamel Surface Index (ESI). Results: Despite the method used to remove the brackets, either with the Weingart’s universal pliers or with the bracket removal pliers, there was a higher percentage of the ARI 2. Both turbine or handpiece removal of the residual composite led to a higher prevalence of the ERI 0. Conclusion: The author’s recommendation is to use Weingart’s universal pliers to remove the brackets and use the tungsten carbide bur mounted on a turbine to remove the residual composite
Description
Keywords
Ortodontia fixa Brocas de turbina e contra-ângulo Alicates Fixed orthodontics Brackets Burs for turbine and handpiece Pliers