M Selvamani, G S Madhushankari, S Basandi Praveen, Donoghue Mandana, Nayak Vaidehi, Diwakar Gajendra
Department of Oral and Maxillofacial Pathology & Microbiology, College of Dental Sciences & Hospital, Davangere-577004. Karnataka, India.
J Int Oral Health. 2013 Apr;5(2):1-7.
Sclerosis of dentinal tubules may be a response to pathological or physiological insult in the crown & root. The mechanism by which apical translucency is produced is still uncertain. The increase in size of the apical zone of sclerotic dentin in human teeth has been used often in forensic science as a method of age estimation. However, only few studies have been done to compare percentage of translucency between vital and non-vital teeth. Conflicting concepts exist regarding the amount of translucent dentin in the vital & non vital teeth and correlation of this variation with age of the subject.
To investigate the amount and distribution of apical translucent dentin in group-matched vital and non-vital teeth.
Study was conducted on 70 extracted teeth, which were subjected for vitality test before extraction, and divided into two groups (vital & non-vital teeth) with a minimum of 35 teeth in each group. Ground sections of 150µ thickness were observed under Stereomicroscope and photographed. The distribution of area and length was measured on the images captured, using PROPLUS IMAGE ANALYSIS SOFTWARE version 4.1.0.0 software.
The present study revealed significant differences (p < 0.05) in apical translucency of dentin, when both vital and non-vital teeth types were compared. There was more apical translucency present in non-vital when compared with vital teeth at any given age. Key words: Apical translucency; vital teeth; non-vital teeth. How to cite this article: Selvamani M, Madhushankari G S, Basandi P S, Donoghue M, Nayak V, Diwakar G. Effect of Vitality on Translucent Dentine - A Study. J Int Oral Health 2013; 5(2):1-7.
牙本质小管硬化可能是牙冠和牙根对病理或生理刺激的一种反应。根尖半透明区形成的机制尚不清楚。人牙硬骨状牙本质根尖区大小的增加常被用于法医学中作为年龄估计的一种方法。然而，仅有少数研究比较了活髓牙和死髓牙的半透明百分比。关于活髓牙和死髓牙中半透明牙本质的量以及这种变化与受试者年龄的相关性存在相互矛盾的观点。
研究分组匹配的活髓牙和死髓牙中根尖半透明牙本质的量和分布。
对70颗拔除的牙齿进行研究，这些牙齿在拔除前进行了活力测试，并分为两组（活髓牙和死髓牙），每组至少35颗牙齿。在体视显微镜下观察150µ厚度的磨片并拍照。使用PROPLUS IMAGE ANALYSIS SOFTWARE 4.1.0.0版本软件测量所拍摄图像上的面积和长度分布。
本研究显示，比较活髓牙和死髓牙两种类型时，牙本质根尖半透明性存在显著差异（p < 0.05）。在任何给定年龄下，死髓牙的根尖半透明性均高于活髓牙。关键词：根尖半透明性；活髓牙；死髓牙。如何引用本文：Selvamani M, Madhushankari G S, Basandi P S, Donoghue M, Nayak V, Diwakar G. 活力对半透明牙本质的影响——一项研究。《国际口腔健康杂志》2013；5(2):1 - 7。
