Structure and microstructure of coronary dentin in non-erupted human deciduous incisor teeth

Brazilian Dental Journal

Luciane R.r S. Costa²  Ii-sei Watanabe¹  Márcia C. Kronka¹  Marcelo C.p. Silva¹ 

[1] ,Federal University of Goiás School of Dentistry Department of PedodonticsGoiânia GO ,Brazil

关键词: deciduous tooth;    dentin;    scanning electron microscopy;    pediatric dentistry;    dente decíduo;    dentina;    microscopia eletrônica de varredura;    dentística pediátrica;   

DOI  :  10.1590/S0103-64402002000300005

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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