Jayawardena Chantha K, Abesundara Anushka P, Nanayakkara Deepthi C, Chandrasekara Malkanthi S
Department of Basic Sciences, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka.
J Oral Sci. 2009 Dec;51(4):587-92. doi: 10.2334/josnusd.51.587.
Exploration of the relationship between tooth dimensions, body size, and age is important in paleontology, forensic odontology and aesthetic dentistry. It is reasonable to speculate that tooth length is associated with stature since teeth contribute to facial height. This study aimed to determine whether there was an association between tooth length and stature and age in a sample of Sri Lankan Sinhalese. Extracted teeth of adults, whose age, sex and standing height were known, were used for measurements. The total tooth length (TTL), crown length (CL) and root length (RL) of permanent maxillary central (68) and lateral (67) incisors were measured using a caliper. Statistical analyses were performed with the software MINITAB version 14.0 (Minitab Inc, USA). Mean age and standing height were 47.81 yr and 152.15 cm, respectively. There was no significant correlation between stature and tooth lengths of incisors. However, age was found to have a significant correlation with RL, (r = 0.26, P < 0.05) and CL (r = -0.28, P < 0.05). Absence of an association between tooth length and stature indicated that the genetic linkage between tooth size and stature was weak, suggesting that determination of stature from tooth lengths is unwarranted. The association between tooth length and age indicates the importance of root length in age determination.
在古生物学、法医牙科学和美容牙科领域，探究牙齿尺寸、身体大小与年龄之间的关系具有重要意义。鉴于牙齿对脸部高度有影响，推测牙齿长度与身高相关是合理的。本研究旨在确定在一组斯里兰卡僧伽罗人样本中，牙齿长度与身高以及年龄之间是否存在关联。研究使用了已知年龄、性别和身高的成年人的离体牙齿进行测量。使用卡尺测量了上颌恒中切牙（68颗）和侧切牙（67颗）的总牙长（TTL）、冠长（CL）和根长（RL）。使用MINITAB 14.0软件（美国Minitab公司）进行统计分析。平均年龄和身高分别为47.81岁和152.15厘米。身高与切牙的牙长之间没有显著相关性。然而，发现年龄与根长（r = 0.26，P < 0.05）和冠长（r = -0.28，P < 0.05）有显著相关性。牙齿长度与身高之间缺乏关联表明牙齿大小与身高之间的遗传联系较弱，这意味着根据牙齿长度来确定身高是没有根据的。牙齿长度与年龄之间的关联表明根长在年龄确定中的重要性。
