Morphological aspects and physical properties of enamel and dentine of Sus domesticus: A tooth model in laboratory research

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• 作者：Nathalia Carolina Fernandes Fagundes ; Miqué ; ias André ; Gomes Cardoso ; Mayara Sabrina Luz Miranda ; Raira de Brito Silva ; Francisco Bruno Teixeira ; Bá ; rbara Catarina Lima Nogueira ; Brenna Magdalena Lima Nogueira ; Sara Elisama Silva de Melo ; Natacha Malu Miranda da Costa ; Rafael Rodrigues Lima ; ^{rafaelrodrigueslima@hotmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{rafalima@ufpa.br" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Swine ; Tooth ; Deciduous ; Anatomy ; Histology
• 刊名：Annals of Anatomy - Anatomischer Anzeiger
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：202
• 期：Complete
• 页码：71-77
• 全文大小：2377 K

文摘

This study aims to describe and analyze morphological and physical properties of deciduous teeth of Sus domesticus. Ultrastructural analysis, mineral composition and microhardness of enamel and dentine tissues were performed on 10 skulls of S. domesticus. External anatomic characteristics and the internal anatomy of the teeth were also described. Data regarding microhardness and ultrastructural analysis were subjected to statistical tests. For ultrastructural analysis, we used the analysis of variance (ANOVA) with Tukey's post hoc (p ≤ 0.05) test. In the analysis of microhardness, the difference between the enamel and dentine tissues was analyzed by a Student's t test. Values were expressed as mean with standard error. The results of ultrastructural analysis showed the presence of an enamel prism pattern. A dentinal tubule pattern was also observed, with a larger diameter in the pulp chamber and the cervical third, in comparison to middle and apical thirds. We observed an average microhardness of 259.2 kgf/mm² for enamel and 55.17 kgf/mm² for dentine. In porcine enamel and dentine, the chemical elements Ca and P showed the highest concentration. The analysis of internal anatomy revealed the presence of a simple root canal system and the occurrence of main canals in the roots. The observed features are compatible with the functional demand of these animals, following a pattern very similar to that seen in other groups of mammals, which can encourage the development of research using dental elements from the pig as a substitute for human teeth in laboratory research.