成人恒牙全冠预备体肩台周径的测量与分析  

Measuring and analysis of the shoulder circumferences of 840 adults′permanent teeth crown preparations

作　　者：吴为良 甘训涛 李博超 章艳华 廖悦梅 林婉婷 刘晓强[3] 陈江[1] Wu Weiliang;Gan Xuntao;Li Bochao;Zhang Yanhua;Liao Yuemei;Lin Wanting;Liu Xiaoqiang;Chen Jiang(Department of Oral Implantology,School and Hospital of Stomatology,Fujian Medical University&Fujian Key Laboratory of Oral Diseases&Fujian Provincial Engineering Research Center of Oral Biomaterial&Stomatological Key Laboratory of Fujian College and University&Institute of Stomatology,Fujian Medical University&Research Center of Dental and Craniofacial Implants,Fujian Medical University,Fuzhou 350002,China;School of Stomatology,Fujian Medical University,Fuzhou 350002,China;Department of Prosthodontics,Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical Devices&Beijing Key Laboratory of Digital Stomatology,Beijing 100081,China)

机构地区：[1]福建医科大学口腔医学院·附属口腔医院口腔种植科、福建省口腔疾病研究重点实验室、福建省口腔生物材料工程技术研究中心、福建省高校口腔医学重点实验室、福建医科大学口腔医学研究院、福建医科大学口腔颅颌面研究中心,福州350002 [2]福建医科大学口腔医学院,福州350002 [3]北京大学口腔医学院·口腔医院修复科、国家口腔医学中心、国家口腔疾病临床医学研究中心、口腔生物材料和数字诊疗装备国家工程研究中心、口腔数字医学北京市重点实验室,北京100081

出　　处：《中华口腔医学杂志》2023年第5期422-426,共5页Chinese Journal of Stomatology

基　　金：福建省自然科学基金(2021J01803);福建医科大学大学生创新性课题(C22075)。

摘　　要：目的基于口内扫描数据测量和分析成人恒牙全冠预备体肩台周径,为口腔临床提供牙体解剖学数据。方法选择2021年3月至2022年6月间送至福州市维尔德义齿加工厂进行义齿制作的840颗全冠预备体口内扫描数据,除第三磨牙外,分为上下颌14个牙位(同颌同名牙归入相同牙位,每个牙位全冠预备体男女各30颗),使用图像测量软件测量全冠预备体肩台周径。分析各牙位肩台周径的性别差异,并根据各牙位数据均值进行分组,使每组最大和最小值与整组均值的差值≤±1.00 mm。分析各组肩台周径的差异及同组肩台周径的性别差异。结果双因素方差分析显示,性别对全冠预备体肩台周径无影响(F=0.55,P=1.457),牙位对全冠预备体肩台周径有显著影响(F=273.15,P<0.001)。根据各牙位全冠预备体肩台周径均值分为5组,1组包括上颌侧切牙、下颌中切牙、下颌侧切牙,肩台周径为(16.62±2.21)mm;2组包括上颌中切牙、上颌尖牙、下颌尖牙、下颌第一前磨牙、下颌第二前磨牙,肩台周径为(20.78±2.48)mm;3组包括上颌第一前磨牙、上颌第二前磨牙,肩台周径为(22.09±2.72)mm;4组包括上颌第一磨牙、上颌第二磨牙、下颌第一磨牙,肩台周径为(30.21±2.67)mm,5组仅有下颌第二磨牙,肩台周径为(31.34±3.18)mm;5组肩台周径两两比较差异均有统计学意义(P<0.05)。结论各牙位全冠预备体肩台周径各不相同,相同牙位全冠预备体肩台周径无性别差异,14个牙位可根据肩台周径长度大致分为5组,可为后续研究提供分组依据。Objective To measure and analyze the shoulder circumferences of adults′permanent teeth crown preparations based on data collected through the intraoral scanning,so as to provide dental anatomy data for clinical diagnosis and analysis.Methods Intraoral scanning data of 840 complete crown preparations were collected,and were entrusted to the World Dental Laboratory Co.,Ltd.in Fuzhou between March 2021 and June 2022.Except the data of the third molar,the rest data were categorized in terms of 14 tooth positions in the upper and lower jaw(each category involved 30 samples from male group and 30 samples from female group).Image measurement software was used to measure the shoulder circumferences of permanent teeth crown preparations.And analysis was conducted to reveal the difference of shoulder circumference diameters between male and female groups.And then they were grouped according to the mean value at each tooth position,on the premise that the difference between the maximum and minimum values and the mean value of the entire group was≤±1.00 mm.Analysis were further conducted to determine the differences of shoulder circumference diameters between each dental position and the differences between male and female in the same groups.Results Bivariate analysis of variance showed that gender had no effect on the shoulder circumference of full crown preparations(F=0.55,P=1.457),while tooth position had a significant impact on the shoulder circumference of full crown preparations(F=273.15,P<0.001).The samples were classified into 5 groups according to the mean values of shoulder circumference diameters relating to each tooth position.Statistical analysis showed that Group 1,covering maxillary lateral incisor,mandibular central incisor and mandibular lateral incisor,had shoulder circumference with diameters of(16.62±2.21)mm;Group 2,consisting of maxillary central incisor,maxillary cusp,mandibular cusp,mandibular first premolar and mandibular second premolar,had diameters of(20.78±2.48)mm;Group 3,consisting of maxi

关 键 词：下颌第二磨牙 上颌侧切牙 第三磨牙 预备体 全冠 上颌第一磨牙 牙位 上颌中切牙 

分 类 号：R783.6[医药卫生—口腔医学]