[The examination about agreement or disagreement among the dental findings on personal identification (Part 2)--Especially about aging factors].
Opportunities for identifying unidentified corpses from dental findings have been increasing in recent years. In finding the person in question promptly from the dental charts submitted by dental clinics or the dental findings stated in police investigation cards, it is effective to narrow down the extent of verification by preliminary screening. While dental findings are quite diversified in detailed examinations, statements in dental charts and police investigation cards are often simplified, thereby resulting in the same findings even for different subjects. On the other hand, due to progress of tooth decay, errors in statement, etc, there may be cases where information on the same subject does not necessarily agree completely. Furthermore, as is well known, the trends of dental diseases are different and the treatment of conditions depends on the kinds of teeth. Miyazawa et al. in this department analyzed samples comprising 1,000 dental cards of subjects in their twenties. The states of each tooth were broken down into 12 classes ranging from healthy teeth to dentures, and an examination was made on the rate of agreement with dental findings in different subjects. The report can be summarized as follows: 1. The rate of complete agreement in dental findings of all the 28 teeth between any different subjects was 0.03%. 2. Further examination of the dentition, which was divided into 6 parts, revealed that the rate of agreement between any different subjects was the lowest for mandibular molars (2.68%) and the highest for mandibular anterior teeth (75.35%). 3. The probability that 25 or more of the 28 teeth correspond in findings between any different subjects was 0.90%.(ABSTRACT TRUNCATED AT 250 WORDS)
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D000328:Adult; D000375:Aging / Q000473:pathology*; D003792:Dental Records / Q000331:legislation & jurisprudence*; D005553:Forensic Dentistry; D006801:Humans