Structure and microstructure of coronary dentin in non erupted deciduous incisors
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Data
2002
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Resumo
The dentin structure of non-erupted human deciduous mandibular and maxillary central and lateral incisor teeth was studied employing
light and scanning electron microscopy. For light microscopy, nitric-acid-demineralized and ground sections were used. The sections
were stained by hematoxylin-eosin, picrosirius and azo-carmim methods, and ground specimens were prepared using a carborundum
disk mounted in a handpiece. For SEM study, teeth were frozen in liquid nitrogen and fractured at longitudinal and transversal
directions. Structurally, demineralization and ground methods revealed tubules with primary and secondary curvatures, canaliculi,
giant tubules, interglobular dentin, predentin, and intertubular dentin. Scanning electron microscopy showed three-dimensional
aspects of dentinal tubules, canaliculi, peritubular dentin, intertubular dentin, and predentin. This study contributes to knowledge about
dentin morphology showing characteristics of teeth not yet submitted to mastication stress.
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Palavras-chave
Deciduous tooth, Pediatric dentistry, Dentin, Scanning electron microscopy
Citação
COSTA, Luciane R. R. S. et al. Structure and microstructure of coronary dentin in non erupted deciduous incisors. Brazilian Dental Journal, Ribeirão Preto, v. 13, n. 3, p. 170-174, 2002.