儿童上颌第一乳磨牙牙冠增龄性变化的初步研究
A preliminary study on age-related changes in the crown of the first maxillary molar in children
朱绍跃 1魏路明 2袁长永 3刘浩 4周瑶 5刘雨苗 5刘宗响 5谢妮娜6
作者信息
- 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
- 2. 徐州医科大学附属口腔医院(徐州市口腔医院)种植中心,徐州 221002
- 3. 徐州医科大学附属口腔医院(徐州市口腔医院)种植中心,徐州 221002;徐州医科大学口腔医学院,徐州 221004
- 4. 徐州医科大学附属口腔医院(徐州市口腔医院)口腔正畸科,徐州 221002
- 5. 徐州医科大学口腔医学院,徐州 221004
- 6. 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;徐州医科大学口腔医学院,徐州 221004
- 折叠
摘要
目的 测量不同年龄组儿童上颌第一乳磨牙的解剖参数,评估牙冠增龄性变化.方法 回顾性分析评估了 154例4～8岁儿童患者308颗上颌第一乳磨牙的锥形束计算机断层扫描(CBCT)图像.用NNT软件分析上颌第一乳磨牙的多个重要指标.结果 髓顶厚度H1(左侧,P=0.01;右侧,P=0.02)和髓室底厚度H3(左右侧P＜0.01)与年龄呈正相关,而髓腔高度H2(左右侧P＜0.01)和腭尖的高度D1(左侧P=0.003,右侧P=0.002)与年龄呈负相关.颊尖的高度与年龄无关.4、5岁年龄组与8岁年龄组之间的H1和H3差异有统计学意义(P＜0.05),4、5岁年龄组与6、7岁和8岁年龄组之间的H2和D1差异有统计学意义(P＜0.05).结论 上颌第一乳磨牙牙冠的年龄相关性变化是临床治疗的重要参考依据,可以通过CBCT数据进行精确测量.
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.
关键词
锥形束计算机断层影像/增龄性变化/上颌第一乳磨牙/髓室Key words
cone beam computed tomography imaging/aging related changes/the first maxillary molar/pulp chamber引用本文复制引用
基金项目
江苏省自然科学基金青年项目(BK20210080)
徐州市重点研发计划(社会发展)(KC22102)
徐州市卫生健康委科技面上项目(XWKYSL20210200)
徐州市彭城英才一医学青年后备人才培养项目(XWRCHT20220033)
出版年
2024
国家科技期刊平台
NSTL
万方数据