Técnicas voltadas para a redução da sensibilidade decorrente do clareamento dental: uma revisão de literatura

The color of the tooth is something that is noticeable in an easy way, being, therefore, the whitening method the most sought after. In addition, it becomes the least invasive compared to other ways of making the tooth white, as can be cited the resin restorations composed of lenses and porcelain veneers. However, as beneficial and aesthetically rewarding as this treatment may be, it is not without side effects. This is because both forms use hydrogen peroxide or even carbamide gel. In the office this substance is used with higher concentrations and is applied by the professional, in which the patient is seated in an appropriate chair. In the homemade form, the applications are in lower concentrations and applied by the patient himself in place of his preferences. In this type of procedure it is normal to use concentrations of hydrogen peroxide ranging from 25% to 40%. This article aims to analyze which techniques can be applied that can reduce sensitivity in post-bleaching. This is a literature review where articles published between the years 2019 to 2022, in English and Portuguese, were consulted.A cor do dente é algo que é perceptível de forma fácil, sendo, por isso o método de clareamento o mais procurado. Além disso, torna-se o menos invasivo se comparado com outras formas de tornar o dente branco, como pode-se citar as restaurações de resina composta por lentes e facetas de porcelana. Entretanto, por mais benéfico e esteticamente gratificante que esse tratamento possa ser, ele não está isento de efeitos colaterais. Isso porque das duas formas usam de peróxido de hidrogênio ou ainda carbamida em gel. No consultório essa substância é usada com maiores concentrações e é aplicada pelo profissional, no qual o paciente fica sentado em uma cadeira apropriada. Na forma caseira, as aplicações são em menores concentrações e aplicada pelo próprio paciente no lugar de suas preferências. Nesse tipo de procedimento é normal usar concentrações de peróxido de hidrogênio que variam de 25% a 40%. Este artigo tem como objetivo geral analisar quais técnicas podem ser aplicadas que podem reduzir a sensibilidade no pós-clareamento. Trata-se de uma revisão de literatura onde foram consultados artigos publicados entre os anos de 2019 a 2022, no idioma inglês e português

Micro-CT evaluation of apical enlargement of molar root canals using rotary or reciprocating heat-treated NiTi instruments

ObjectiveThe aim of this study was to evaluate the root canal preparation and apical enlargement of molar root canals with rotary or reciprocating heat-treated nickel-titanium (NiTi) instruments, by using micro-computed tomography (micro-CT). MethodologyMesial root canals (n=48) of mandibular molars, with a curvature between 20° and 40°, were prepared with ProDesign Logic (PDL) 25.01 and 25.06 in rotary motion, or ProDesign R (PDR) 25.06 in reciprocating motion (PDR). Apical enlargement was performed with PDL35.01 and PDL35.05 or PDR35.05. Scanning with 9 µm resolution was performed before and after preparation, and, after apical enlargement, by using micro-CT. The percentage of volume increase, debris and untouched root canal surface, transportation, centralization and preparation time were analyzed. ANOVA and Tukey or Kruskall-Wallis and Dunn statistical tests were conducted (α=.05). ResultsPDL promoted a higher apical percentage of volume increase, and lower percentage of debris and untouched root canal surface than PDR 25.06 preparation in entire canal and in all thirds (P<.05). Apical enlargement with PDL 35.05 and PDR 35.05 produced a higher percentage of volume increase in the apical region in relation to the initial preparation (P<.05). PDR 35.05 and PDL 35.05 showed similar results in relation to percentage of debris and untouched root canal surface in entire canal and in all thirds (P>.05). Centralization and transportation showed no difference (P>.05). PDR required less time to perform preparation and apical enlargement (P<.05). Conclusions:The apical enlargement 35.05 with CM heat-treatment instruments using reciprocating and rotary motion reduced the percentage of debris and untouched root canal surface, without causing deviations or procedural errors. The protocol of greater apical enlargement favors the cleaning of the root canals in both kinematics. Preparation by the reciprocating system was faster than by the rotary system

TRATAMENTO ENDODÔNTICO EM MOLAR INFERIOR UTILIZANDO TECNOLOGIAS ENDODÔNTICAS

The use of quality technologies and materials in endodontics helps the quality, effectiveness and precision of endodontic treatment. Successful treatment depends on the complete elimination of microorganisms responsible for the development of pulp pathologies. In-depth knowledge of root canal anatomy and excellent materials contribute to more effective and safer treatment. The purpose of this study was to endodontically treat a lower first molar with a periapical lesion using endodontic technologies and state-of-the-art materials such as the Wave One Gold® system, the Easy Clean® cleaning system and Bio-C Sealer® bioceramic cement.O uso de tecnologias e materiais de qualidade em endodontia auxiliam na qualidade, efetividade, precisão do tratamento endodôntico. O sucesso do tratamento depende da completa eliminação de microrganismo responsáveis pelo desenvolvimento de patologias pulpares. O conhecimento profundo da anatomia do canal radicular e matérias de excelência, colaboram para um tratamento mais eficaz e seguro. O objetivo deste estudo foi realizar o tratamento endodôntico de um primeiro molar inferior com lesão periapical utilizando tecnologias endodônticas e materiais de última geração como o sistema Wave One Gold®, o sistema de limpeza Easy Clean® o cimento biocerâmico Bio-C Sealer®