作者
Tathiane L Lenzi, Camila de Almeida B Guglielmi, Victor E Arana-Chavez, Daniela P Raggio
发表日期
2013/12/1
期刊
Microscopy and Microanalysis
卷号
19
期号
6
页码范围
1445-1449
出版商
Oxford University Press
简介
This study compared dentinal tubule density and diameter of human primary and permanent teeth at different depths of the coronal dentin. Crowns of eight primary second molars and eight permanent third molars were serially sectioned into three disks of ~0.5 mm thickness (superficial, middle, and deep layers), perpendicular to the long axis. Tubule density and diameter were evaluated in 2,000× and 3,000× magnifications by scanning electron microscopy. Data obtained were subjected to two-way repeated measures ANOVA and Tukey's post hoc test (α = 0.05). Tubule density was greater in primary teeth compared with permanent ones, regardless of depth (primary: 124,329 ± 43,594 mm2; permanent: 45,972 ± 21,098 mm2). In general, the tubule density increased as the dentin depth increased, except to the superficial and middle layers from permanent teeth. Tubule diameter was larger in the dentin layer …
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TL Lenzi, CAB Guglielmi, VE Arana-Chavez… - Microscopy and Microanalysis, 2013