A preliminary study on age-related changes in the crown of the first maxillary molar in children
10.19405/j.cnki.issn1000-1492.2024.06.027
- VernacularTitle:儿童上颌第一乳磨牙牙冠增龄性变化的初步研究
- Author:
Shaoyue ZHU
1
;
Luming WEI
;
Changyong YUAN
;
Hao LIU
;
Yao ZHOU
;
Yumiao LIU
;
Zongxiang LIU
;
Nina XIE
Author Information
1. 徐州医科大学附属口腔医院(徐州市口腔医院)儿童口腔科,徐州 221002
- Keywords:
cone beam computed tomography imaging;
aging related changes;
the first maxillary molar;
pulp chamber
- From:
Acta Universitatis Medicinalis Anhui
2024;59(6):1089-1094,1106
- CountryChina
- Language:Chinese
-
Abstract:
Objective To measure the anatomical parameters of the first maxillary molars in children of different age groups and evaluate the age-related changes in dental crowns.Methods A retrospective analysis was conduc-ted on cone beam computed tomography(CBCT)images of 4-8-year-old children.NNT software was used to ana-lyze multiple important indicators of maxillary first molar.Results A total of 308 first maxillary molars,including 154 pediatric patients,were evaluated in this study.The thickness of the pulp apex H1(left,P=0.01;right,P=0.02)and the thickness of the pulp chamber floor H3(left and right P＜0.01)were positively correlated with age,while the height of the pulp cavity H2(left and right P＜0.01)and the height of the palate tip D1(left P=0.003,right P=0.002)showed a negative correlation with age.There was no significant correlation between the height of the buccal tip and age(P＞0.05).There were significant differences in H1 and H3 between the 4-year-old and 5-year-old age groups between the 8-year-old age group(P＜0.05),as well as significant differences in H2 and D1 between the 4-year-old and 5-year-old between the 6-year-old,7-year-old and 8-year-old age groups(P＜0.05).Conclusion The age-related changes in the crowns of the first maxillary molars are important references for the clinical treatment,and can be accurately measured through CBCT data.
