Singh Simranjit, Venkatapathy Ramesh, Balamurali Pd, Charles Nsc, Suganya R
Department of Oral Pathology and Microbiology, Mahatma Gandhi Postgraduate Institute of Dental Sciences, Puducherry, India.
J Forensic Dent Sci. 2013 Jan;5(1):47-51. doi: 10.4103/0975-1475.114558.
Dentin translucency is best suited for age estimation not only in terms of accuracy but also in terms of simplicity. Conventionally, translucency has been measured using calipers. Computer-based methods have been proposed for the same, although these required the use of custom-built software programs.
The objectives of the study were to use a simple digital method to measure dentinal translucency on sectioned teeth and to compare digital measurements to conventionally obtained translucency measurements.
Fifty extracted permanent teeth were collected and were sectioned to 250 μm. Translucency measurements were obtained using the digital method and compared with those obtained using a caliper.
Correlation coefficients of translucency measurements to age were statistically significant for both methods (P < 0.001), and marginally higher for the conventional approach (r = 0.4671). Application of derived linear regression equations on an independent sample (n = 10) revealed a similar ability of both the methods to assess age to within ±5 years of the actual age.
The translucency measurements obtained by the two methods were very similar, with no clear superiority of one method over the other. Hence, further studies on a large scale are warranted to determine which method is more reliable to estimate the age.
牙本质透明度不仅在准确性方面，而且在简便性方面都最适合用于年龄估计。传统上，透明度是使用卡尺测量的。虽然需要使用定制软件程序，但也有人提出了基于计算机的方法来进行同样的测量。
本研究的目的是使用一种简单的数字方法来测量切片牙齿的牙本质透明度，并将数字测量结果与传统获得的透明度测量结果进行比较。
收集50颗拔除的恒牙并切成250μm厚的切片。使用数字方法获得透明度测量结果，并与使用卡尺获得的结果进行比较。
两种方法的透明度测量与年龄的相关系数均具有统计学意义（P < 0.001），传统方法的相关系数略高（r = 0.4671）。将推导的线性回归方程应用于一个独立样本（n = 10）显示，两种方法评估年龄的能力相似，误差在实际年龄的±5岁范围内。
两种方法获得的透明度测量结果非常相似，一种方法没有明显优于另一种方法。因此，有必要进行大规模的进一步研究，以确定哪种方法在估计年龄方面更可靠。
