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

作　　者：朱绍跃 魏路明 袁长永 刘浩 周瑶 刘雨苗 刘宗响 谢妮娜 Zhu Shaoyue;Wei Luming;Yuan Changyong;Liu Hao;Zhou Yao;Liu Yumiao;Liu Zongxiang;Xie Nina(Dept of Children′s Stomatology,The Affiliated Stomatological Hospital of Xuzhou Medical University(Xuzhou Stomatological Hospital),Xuzhou 221002;Center of Implant Dentistry,The Affiliated Stomatological Hospital of Xuzhou Medical University(Xuzhou Stomatological Hospital),Xuzhou 221002;School of Stomatology,Xuzhou Medical University,Xuzhou 221004;Dept of Orthodontics,The Affiliated Stomatological Hospital of Xuzhou Medical University(Xuzhou Stomatological Hospital),Xuzhou 221002)

机构地区：[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

出　　处：《安徽医科大学学报》2024年第6期1089-1094,1106,共7页Acta Universitatis Medicinalis Anhui

基　　金：江苏省自然科学基金青年项目(编号:BK20210080);徐州市重点研发计划(社会发展)(编号:KC22102);徐州市卫生健康委科技面上项目(编号:XWKYSL20210200);徐州市彭城英才—医学青年后备人才培养项目(编号:XWRCHT20220033)。

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。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 conducted on cone beam computed tomography(CBCT)images of 4-8-year-old children.NNT software was used to analyze 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 

分 类 号：R788.2[医药卫生—口腔医学]