上颌第三磨牙阻生深度、磨牙倾斜度与前牙开(牙合)趋势的关系研究

郑茹丹; 郑怡; 廖子琦; 莫水学

doi:10.16190/j.cnki.45-1211/r.2023.03.016

上颌第三磨牙阻生深度、磨牙倾斜度与前牙开(牙合)趋势的关系研究

广西医科大学口腔医学院/附属口腔医院广西口腔颌面修复与重建研究自治区级重点实验室广西医科大学颌面外科疾病诊治研究重点实验室广西壮族自治区卫生健康委员会口腔感染性疾病防治重点实验室广西颅颌面畸形临床医学研究中心, 南宁 530021

基金项目:

国家自然科学基金资助项目（No.82260197）；广西卫健委自筹经费科研课题资助（No.Z20200983）

详细信息

通讯作者:
莫水学,E-mail:mosx0226@outlook.com

中图分类号: R783.5
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出版历程
- 收稿日期: 2022-11-09
- 网络出版日期: 2024-01-31

Study on the relationship among impacted depth of maxillary third molar, molar angulation and trend of anterior open bite

College of Stomatology, Hospital of Stomatology, Guangxi Medical University, Guangxi Key Laboratory of Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi Health Commission Key laboratory of Prevention and Treatment for Oral Infectious Diseases, Guangxi Clinical Research Center for Craniofacial Deformity, Nanning 530021, China

摘要

摘要 目的：探讨上颌第三磨牙阻生深度和上颌第一、第二磨牙倾斜度与前牙开之间的关系。方法：本研究选取了125例成年患者，按照上颌第三磨牙的高、中、低位阻生深度分为高位组（43 例）、中位组（37 例）、低位组（45 例）；分析头颅侧位定位片、CBCT 并测量前牙开相关指标及上颌第一、第二磨牙倾斜度。结果：与中位组及低位组相比，高位组患者的垂直向异常指数值（ODI）较小，且上中切牙倾斜度（U1-SN）、SNB 及下面高（ANS-Me）值较大（P＜0.05）；相关性分析显示，ODI与上颌第三磨牙阻生深度呈负相关关系（P＜0.01），SNB、ANS-Me 和U1-SN 与上颌第三磨牙阻生深度呈正相关关系（P＜0.01）；与中位组及低位组相比，高位组患者的第一、第二磨牙倾斜度较大，偏近中倾斜（P＜0.01）；上颌磨牙近中倾斜度与上颌第三磨牙的阻生深度呈正相关关系（P＜0.01）。此外，上颌第一磨牙倾斜度（U6）、上颌第二磨牙倾斜度（U7）与ANB、ODI呈负相关关系（P＜0.01），与SNB、前后不调指数（APDI）、U1-SN呈正相关关系（P＜0.01）。结论：上颌第三磨牙阻生深度和上颌第一、第二磨牙倾斜度与开之间有密切关系，上颌第三磨牙阻生深度越高位，上颌磨牙近中倾斜度越大，且前牙开趋势越明显。
- 上颌第三磨牙 /
- 磨牙倾斜度 /
- 阻生 /
- 开(牙合)
Abstract Objective: To explore the relationship among impacted depth of maxillary third molar, angulation of maxillary first and second molars and anterior open bite.Methods: In this study, 125 adult patients were selected and divided into high group(43 patients), middle group(37 patients)and low group(45 patients)according to the high, middle and low impacted depth of maxillary third molar.The relative indexes of anterior open bite and the angulation of maxillary first and second molars were measured by taking lateral cephalometric films and CBCT.Results: Compared with middle group and low group, overbite depth indicator(ODI)value of patients was smaller in high group, and the angulation of maxillary incisors (U1-SN), SNB angle and below height (ANS-Me) values were larger (P＜0.05).Correlation analysis showed that ODIwas negatively correlated with the impacted depth of the maxillary third molar (P＜0.01), while SNB, ANS-Me and U1-SN were positively correlated with the impacted depth of maxillary third molar (P＜0.01).The first and second molar angulation of patients in high group was larger and more mesial compared with middle group and low group (P＜0.01).The mesial angulation of maxillary molar was positively correlated with the impacted depth of maxillary third molar(P＜0.01).Additionally, the angulation of maxillary first molar (U6) and the angulation of maxillary second molar (U7) were negatively correlated with ANB and ODI(P＜0.01), while positively correlated with SNB, APDI(anterior-posterior dissonance indicator) and U1-SN (P＜0.01).Conclusion: The impacted depth of maxillary third molar, the angulation of maxillary first and second molars are closely related to anterior open bite.The higher the impacted depth of maxillary third molar is, the greater the mesial angulation of the maxillary molar is, and the more obvious the trend of anterior open bite is.
- maxillary third molar /
- molar angulation /
- impaction /
- open bite