Topography of Primary Molar Pulp Chamber Floor: A Scanning Electron Microscopy and Micro-Computed Tomography Analysis

• Autor(a) principal: Bandeira, Ana Victória Lopes
• Data de Publicação: 2021
• Outros Autores: de Lima, Marina de Deus Moura, Lima, Cacilda Castelo Branco, de Moura, Marcoeli Silva, Cury, Altair Antoninha Del Bel, Moura, Lucia de Fátima Almeida de Deus
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Pesquisa Brasileira em Odontopediatria e Clínica Integrada (Online)
• Texto Completo: https://revista.uepb.edu.br/PBOCI/article/view/784
• topic: Dental Pulp Cavity; Tomography, X-Ray Computed; Molar; Microscopy, Electron, Scanning

Objective: To determine in vitro the frequency, shape, type, diameter, and patency of accessory canals in the primary molars pulp chamber floor. Material and Methods: Sixteen healthy primary molars were evaluated by micro-computed tomography and scanning electron microscopy. Descriptive analyses of the frequency, shape (round, oval, or irregular), type (blind, true, or hidden), patency and diameter of the accessory canals were performed. Results: Half of the teeth presented accessory canals, 62.5% of which were located in the upper molars and 37.5% in the lower molars. The most frequent shape was irregular. In three-dimensional analysis, blind accessory canals (12.5%) and with patency (18.7%) of the teeth were observed. The average accessory canal diameter was 51.97 µm (± 26.03 µm). Conclusion: Upper molars showed a higher frequency of accessory canals with larger diameters. The irregular shape was the most frequent. 18.7% of accessory channels showed patency.