口腔疾病防治2024，Vol.32Issue(2)：116-122,7.DOI:10.12016/j.issn.2096-1456.2024.02.005
华南地区成人上颌中切牙与牙槽骨相对位置关系CBCT分析
CBCT analysis of the relative position between maxillary central incisors and alveolar bone in Southern Chi-nese adults
摘要
Abstract
Objective Exploring the position and bone wall thickness characteristics of the maxillary central inci-sors in Southern Chinese adults to provide a clinical reference for the design of immediate maxillary central incisor im-plantation surgery.Methods The hospital ethics committee approved the study,and the patients provided informed consent.CBCT images of 990 adult patients(aged 20-79 years)from the Stomatology Hospital(January 2018 to Decem-ber 2021)were categorized based on the dental arch form and age-sex groups.Sagittal CBCT images of the maxillary central incisors were used to measure the labial and palatal bone thickness wall at 4 mm the CEJ to apical,the middle of the root,and the angle between the tooth long axis and the long axis of the alveolar process,to compare the thickness of the labial and palatal bone walls in samples of male and female patients,and to explore the relationship between the angle between the tooth long axis and the alveolar process long axis in samples of male and female patients in different age groups(20-39 years;40-59 years;60-79 years).Results Significant differences were found in the labiopalatine side of the alveolar bone of the maxillary incisor root position.A total of 95.8％(948/990)of the maxillary incisors were positioned more buccally,4.1％(41/990)were positioned more midway,and 0.1％(1/990)were positioned more palatal-ly.The thicknesses of the bone wall at the CEJ of 4 mm below the palatal side,the middle of the root,and at the apex were greater(1.82±0.56 mm,3.20±1.10 mm,and 7.70±2.00 mm,respectively)than those at the labial side(1.21± 0.32 mm,0.89±0.35 mm,and 1.86±0.82 mm,respectively),with statistical significance(P＜0.05).Male bone wall thickness was generally greater than female bone wall thickness(P＜0.05).The angle between the long axis of male teeth and the alveolar bone was 14.77°±5.66°,while that of female teeth was 12.80°±5.70°,with a statistically signifi-cant difference(P＜0.05).The angle between the long axis of teeth and the alveolar bone in the 40-59-year-old group and the 60-79-year-old group was greater than that in the 20-39-year-old group,and the difference was statistically sig-nificant(P＜0.05).Conclusion A total of 95.8％of adults in South China have maxillary central incisors with root de-viation toward the labial bone cortex.The thickness of the labial bone wall is much thinner than that of the labial bone wall,which is the middle of the thickness of the root.In Southern Chinese adults,the angle between the upper central incisor and the long axis of the alveolar bone in males is greater than that in females,and the degree of the angle in-creases with age.It is recommended to pay attention to the thickness of the bone wall around the root and the angle be-tween the teeth before immediate implantation surgery to choose a reasonable implantation plan.关键词
锥形束CT/上颌中切牙/上切牙根位置/即刻种植/唇侧骨壁/腭侧骨壁/牙体长轴/牙槽骨长轴Key words
cone-beam computed tomography/maxillary central incisor/upper incisors position/immediate implant/labial bone wall/palatal bone wall/the long axis of tooth/the long axis of alveolar bone分类
医药卫生引用本文复制引用
丁子凌,刘昕,杨晓喻,刘楚峰..华南地区成人上颌中切牙与牙槽骨相对位置关系CBCT分析[J].口腔疾病防治,2024,32(2):116-122,7.基金项目
广东省自然科学基金项目(2018A0303130261)This study was supported by the grants from Natural Science Foundation of Guangdong Province(No.2018A0303130261). （2018A0303130261）
