Coronal dentinal tubules of non-erupted deciduous incisors

Resumo

The diameter and density of coronal dentinal tubules were assessed in non-erupted human deciduous incisors. Using liquid nitrogen, frozen samples were fractured in longitudinal and oblique directions and observed by means of a Jeol JSM-6100 scanning electron microscope. It was observed that the diameter of dentinal tubules ranged from 0.50 to 1.94 micrometers and increased significantly from the outer to the inner layers. However, comparing the incisal, mid- dle and cervical thirds, no statistically significant differences were observed. The number of tubules per square milli- meter varied from 3,281 to 32,313 and also increased from the external dentinal surface to the dentinal surface of the pulp chamber.

Descrição

Palavras-chave

Dentin, Pediatric dentistry, Deciduous, Tooth, Dentina, Odontopediatria, Dente decíduo

Citação

COSTA, Luciane Ribeiro de Rezende Sucasas da; WATANABE, Ii-Sei; KRONKA, Marcia Consentino. Coronal dentinal tubules of non-erupted deciduous incisors. Pesquisa Odontológica Brasileira, São Paulo, v. 16, n. 1, p. 12-17, Jan./Mar. 2002.