北京大学学报（医学版）2018，Vol.50Issue(1)：104-109,6.DOI:10.3969/j.issn.1671-167X.2018.01.018
锥形束CT评判安氏Ⅲ类错(牙合)上前牙骨开裂与骨开窗的准确性分析
Accuracy analysis of alveolar dehiscence and fenestration of maxillary anterior teeth of Angle class Ⅲ by cone-beam CT
徐筱 1徐莉 1江久汇 2吴佳琪 3李小彤 2靖无迪1
作者信息
- 1. 北京大学口腔医学院·口腔医院,牙周科,口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室,北京 100081
- 2. 北京大学口腔医学院·口腔医院,正畸科 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室,北京 100081
- 3. 北京大学口腔医学院·口腔医院第一门诊部,北京 100034
- 折叠
摘要
Abstract
Objective: To evaluate the accuracy and reliability of detecting alveolar bone dehiscence and fenestration of maxillary anterior teeth of Angle class Ⅲ by cone-beam computed tomography (CBCT). Methods: Eighteen Angle class Ⅲ patients with 108 maxillary anterior teeth were included (3 males and 15 females) who accepted modified corticotomy in orthodontic therapy. The mean age was 23. 6 years (18-30 years). The clinical detection of dehiscence and fenestration was done when modified corticotomy was performed by the same periodontist. The CBCT examination was conducted pre-operation and the detection of dehiscence and fenestration by CBCT was done by two periodontists. The data in modified corticotomy were used as the golden standard to calculate the parameters,such as sensitivity, specificity,positive and negative predictive values,Youden index (YI), positive and negative likelihood ratio. Kappa statistic was used to analyze the agreement between the clinical detection and the CBCT detection. Results: The incidence of dehiscence and fenestration was about 10. 19％ and 13. 89％ respectively,which mainly occurred on lateral incisors and canines. The median values of length and width of dehiscence were about 5 mm and 4 mm,and the median values of length and width of fenestration were 3 mm and 2 mm, respectively. Most fenestrations were detected on the middle third to the apical third of the root. For dehiscence, the agreement between clinical detection and CBCT detection was statistically significant (P <0. 05). For fenestration, the agreement between clinical detection and CBCT detection was statistically significant (P <0. 05). The values of sensitivity and specificity for detecting dehiscence were more than 0. 7. The values of positive and negative predictive values for detecting dehiscence were 0.44 and 0. 97. The values of sensitivity and specificity for detecting fenestration were 0. 93 and 0. 52. The values of positive and negative predictive values for detecting fenestration were 0.24 and 0.98. Conclusion: For dehiscence, the agreement between clinical detection and CBCT detection was good. For fenestration, the agreement between clinical detection and CBCT detection was general. Detection of dehiscence and fenestration of maxillary anterior teeth of Angle class Ⅲ by CBCT had limited diagnostic value in clinical practice with overestimation of dehiscence and fenestration incidence.关键词
错(牙合),安氏Ⅲ类/锥束计算机体层摄影术/牙槽骨质丢失/敏感性与特异性Key words
Malocclusion,Angle class Ⅲ/Cone-beam computed tomography/Alveolar bone loss/Sensitivity and specificity分类
医药卫生引用本文复制引用
徐筱,徐莉,江久汇,吴佳琪,李小彤,靖无迪..锥形束CT评判安氏Ⅲ类错(牙合)上前牙骨开裂与骨开窗的准确性分析[J].北京大学学报（医学版）,2018,50(1):104-109,6.
