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Abstract(s)
Introdução: O primeiro molar superior é o dente que apresenta grande variação morfológica, o que se reflete na maior taxa de insucesso clínico. As principais causas de falha no tratamento endodôntico é a falta de conhecimento da sua morfologia, que permita localizar o segundo canal mesio-vestibular (MV2). A recente incorporação da tomografia computorizada Cone Beam permitiu visualizar estruturas anatómicas de difícil observação sendo assim uma valiosa ajuda para o fornecimento de informações adicionais para diagnóstico e tratamento. Objetivo: Determinar, in vitro, a frequência do segundo canal presente na raíz mesio-vestibular do primeiro molar superior, por meio de tomografias computorizadas, obtidas com o Cone Beam. A amostra consiste numa coleção de 13 dentes (1º molares superiores) a serem analisados morfologicamente através das imagens obtidas através do CBCT. Materiais e métodos: Os molares selecionados foram implantados na Base de Inclusão MP, colocados ao longo da arcada, para posterior obtenção de imagens através da tomografia computorizada Cone Beam. É feita a análise radiográfica com a expectativa da visualização dos segundos canais mesio-vestibulares e posteriormente a análise estatística da sua frequência. Resultados: O CBCT identificou a frequência do MV2 nos 1º molares superiores apresentados em 76,92% do total dos dentes. Nos quais, maiormente foi encontrado o canal MV2 até aos 8 mm do apéx da raiz mesio-vestibular. Conclusão: A alta prevalência encontrada do canal MV2 deve ser considerada antes de se estabelecer um tratamento endodôntico para se obter um resultado ótimo e evitar a falha terapêutica. O CBCT é uma ferramenta útil para sua deteção e apresenta alta sensibilidade para a visualização do canal referido.
Introduction: The first maxillary molar is the tooth that presents great the morphological variation, which is reflected in the higher rate of clinical failure. The main cause of failure in endodontic treatment is the lack of knowledge of its morphology, which allows to locate the second mesiobuccal canal (MV2). The recent incorporation of the Cone Beam computed tomography (CBCT) allowed visualizing anatomical structures of difficult observation and thus a valuable aid in the provision of additional information for diagnosis and treatment. Objective: To determine, in vitro, the frequency of the second mesiobuccal canal present in the mesiobuccal root of the first maxillary molar, using CBCT. The sample consists of a collection of 13 teeth (1st maxillary molar) to be analyzed morphologically through the images obtained through the CBCT. Materials and methods: The selected molars were implanted in the MP Inclusion Base, placed along the arch, and later obtained through CBCT. The radiographic analysis was performed with the expectation of visualizing the second mesiobuccal canal and then the statistical analysis of its frequency. Results: The CBCT identified the frequency of MV2 in the upper 1st molars presented in a total of 76.92% of the sample, ten teeth presented the canal. In which, the MV2 canal was found up to 8 mm from the mesiobuccal root canal apex. Conclusion: The high prevalence of the MV2 canal should be considered before establishing an endodontic treatment to obtain an optimal result and avoid the therapeutic failure. The CBCT is an useful tool for its detection and presents high sensitivity for the visualization of the referred canal.
Introduction: The first maxillary molar is the tooth that presents great the morphological variation, which is reflected in the higher rate of clinical failure. The main cause of failure in endodontic treatment is the lack of knowledge of its morphology, which allows to locate the second mesiobuccal canal (MV2). The recent incorporation of the Cone Beam computed tomography (CBCT) allowed visualizing anatomical structures of difficult observation and thus a valuable aid in the provision of additional information for diagnosis and treatment. Objective: To determine, in vitro, the frequency of the second mesiobuccal canal present in the mesiobuccal root of the first maxillary molar, using CBCT. The sample consists of a collection of 13 teeth (1st maxillary molar) to be analyzed morphologically through the images obtained through the CBCT. Materials and methods: The selected molars were implanted in the MP Inclusion Base, placed along the arch, and later obtained through CBCT. The radiographic analysis was performed with the expectation of visualizing the second mesiobuccal canal and then the statistical analysis of its frequency. Results: The CBCT identified the frequency of MV2 in the upper 1st molars presented in a total of 76.92% of the sample, ten teeth presented the canal. In which, the MV2 canal was found up to 8 mm from the mesiobuccal root canal apex. Conclusion: The high prevalence of the MV2 canal should be considered before establishing an endodontic treatment to obtain an optimal result and avoid the therapeutic failure. The CBCT is an useful tool for its detection and presents high sensitivity for the visualization of the referred canal.
Description
Keywords
Frequência Segundo canal mesio-vestibular Frequency Second mesiobuccal canal Cone Beam Computed Tomography (CBCT)