Document Detail


Chronological age estimation of third molar mineralization of Han in southern China.
MedLine Citation:
PMID:  19908057     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In order to study the chronology of age of third molar mineralization of Han in southern China, Demirjian staging method was used to determine the stage of four third molars (18, 28, 38, 48) mineralization in 3,100 Han in southern China aged 4.1-26.9 years based on radiological evidence from digital orthopantomograms. The mean age of the 3,100 patients was 15.96 +/- 4.73 years, including 1,200 male (mean age, 15.32 +/- 4.62) and 1,900 female (mean age, 16.35 +/- 4.76). Results show that there was no significant difference in mineralization between 18 and 28 and 38 and 48 of male or female. However, significant difference was observed between 28 and 38 of female at stage C; 28 was 0.25 years earlier than 38. In male, at stage G, 38 was 0.61 years earlier than 28, and 48 was 0.62 years earlier than 18. At stages D, E, F, G, and H, male 48 was 0.34, 0.66, 0.72, 1.34, and 0.76 years earlier than that of female, respectively. At stages A, D, E, F, G, and H, male 38 was 0.73, 0.26, 0.56, 0.91, 1.29, and 0.70 years earlier than that of female, respectively. At stages B, E, F, G, and H, the mineralization mean age of male 18 was 0.54, 0.50, 0.76, 0.92, and 0.58 years earlier than that of female, respectively. At stages E, F, G, and H, the mineralization mean age of male 28 was 0.51, 0.76, 0.92, and 0.49 years earlier than that of female, respectively. After reviewing the literature, the chronological mineralization age of 48, at stages D to G, of Han in southern China was 1 to 4.6 years earlier than that of Japanese and 1 to 3 years earlier than that of German. The mean age at stage H of 48 of Han in southern China was similar to Turkish, Black African, Japanese, and German, but was later than Spanish. Finally, the conclusions are: (1) in the same gender group of Han in southern China, the mineralization ages between two sides in upper or lower jaw are very similar, and (2) the chronology mean age and complete time of third molar mineralization of male were earlier than that of female.
Authors:
Dong Lin Zeng; Zhi Ling Wu; Min Yi Cui
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Publication Detail:
Type:  Journal Article     Date:  2009-11-12
Journal Detail:
Title:  International journal of legal medicine     Volume:  124     ISSN:  1437-1596     ISO Abbreviation:  Int. J. Legal Med.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-15     Completed Date:  2010-05-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9101456     Medline TA:  Int J Legal Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  119-23     Citation Subset:  IM    
Affiliation:
Department of Oral Radiology, Affiliated Stomatological Hospital of Sun Yet-sen University, Guangzhou, China. zengdonglin@163.com
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Age Determination by Teeth / methods*
Child
Child, Preschool
China
Ethnic Groups
Female
Forensic Dentistry
Humans
Male
Molar, Third / growth & development*
Radiography, Dental, Digital
Radiography, Panoramic
Sex Characteristics
Tooth Calcification*
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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