アブストラクト（26巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Age Estimation from a Tooth Dated ca.3,000 B.C. by Racemization of Amino Acid
Subtitle　： SHORT COMMUNICATION
Authors　： Susumu Ohtani1), Toshiharu Yamamoto2)
Authors（kana）　：
Organization　： 1)Department of Forensic Dental Medicine, Kanagawa Dental College, 2)Department of Biology, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 26
Number　： 1
Page　： 22-25
Year/Month　： 1998 / 3
Article　： Report
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] We attempted to estimate the age at death from a tooth (dentine of right lower second molar) dated at ca.3,000 B.C. (5,000 years) based on anthropological characteristics and application of the 14C method to the remaining bones. The tooth was excavated from wet sandy earth, and showed fairly good hardness, although severe attrition was evident, and the enamel was deep brown in color. The D/L ratio of aspartic acid in the tooth was 0.1948, and the presumed age of the individual was calculated to be 34 years assuming that the tooth had originated from a human 5,000 years ago, and that the average atomospheric temperature up until the present has been 12.5℃. This technique may be another valuable method for estimating the lifespan of ancient people.
Practice　： Dentistry
Keywords　： Age estimation, 5,000 years b.p., Racemization, Dentine, D-aspartic acid