Correlations of pulp chamber height and dentine thickness of mandibular first molar with age in Chinese Han population based on cone beam computed tomography
10.3969/j.issn.1001-3733.2017.03.021
- VernacularTitle:基于CBCT对汉族人下颌第一恒磨牙髓室高度及牙本质厚度与年龄关系的研究
- Author:
Yan LIU
;
Zhongying NIU
;
Rui WANG
;
Shu YAN
;
Jianzhong ZHANG
;
Chuhua TANG
;
Sumeng SHI
- Keywords:
Cone-beam computed tomography(CBCT);
Mandibular first molar;
Pulp chamber;
Dentine;
Age
- From:
Journal of Practical Stomatology
2017;33(3):381-384
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the relationship between pulp chamber height and dentine thickness of mandibular first molar on long axis with age in a Chinese Han population by cone-beam computed tomography(CBCT).Methods:CBCT images of 420 Chinese Han subjects(210 males and 210 females) were divided into 6 age groups as follows:15-24,25-34,35-44,45-54,55-64 and 65-74 years(n=70,35 males and 35 females).The height of pulp chamber and dentine thickness of the chamber root and floor of mandibular first permanent molar on long axis was measured by Galileo software of CBCT in vertical direction and then statistical analysis was carried out.Results:On long axis,the height of pulp chamber was (0.85±0.54) mm in males and (0.79±0.51) mm in females(P>0.05);dentine thickness of the pulp chamber roof was (3.60±0.49) mm in males and (3.50±0.49) mm in females(P>0.05);and dentine thickness of the pulp chamber floor was (2.57±0.52) mm in males and (2.49±0.5) mm in females(P>0.05).With aging,the height of pulp chamber was decreased(P<0.05) and dentine thickness of mandibular first permanent molar on long axis was increased(P<0.05).Conclusion:In Chinese Han population,the of pulp chamber height of mandibular first permanent molar on long axis is related to age,The dentine thickness increased with ages,the increase of dentine thickness of pulp chamber floor is more significant than that of the roof.
