Comparison of panoramic radiography and cone-beam computed tomography images for detecting external root resorption of mandibular second molar associated with third molar impaction
10.13591/j.cnki.kqyx.2023.01.012
- VernacularTitle:下颌阻生智齿相关第二磨牙牙根外吸收:曲面断层片与CBCT对比研究
- Author:
Hongcheng SONG
;
Hong HUANG
;
Zhifan WANG
;
Qiuping JING
;
Dongmiao WANG
- Publication Type:Clinical Trial
- Keywords:
impacted mandibular third molar;
mandibular second molar;
external root resorption;
panoramic radiography;
CBCT
- From:
STOMATOLOGY
2023;43(1):70-74
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To compare the diagnostic performance between panoramic radiography(PR)and cone beam computed tomography(CBCT)in the assessment of external root resorption(ERR)of mandibular second molars associated with impacted third molars.
Methods: A total number of 832 patients with 1 074 mesially and horizontally impacted mandibular third molars treated at our institution from January 2019 to December 2020 were retrospectively analyzed. Presence of ERR on the adjacent second molar was investigated with PR and CBCT. Factors affecting the diagnostic accuracy of PR were determined.
Results: The overall incidence of ERR in second molars was 33.15%(356/1 074)as detected by CBCT images. The accuracy of PR was 66.39%. Multivariate Logistic regression analyses further revealed that middle and Class Ⅲ impaction, crown contact or overlap with the root of adjacent tooth were risk factors for inaccurate diagnosis of PR(P<0.05).
Conclusion:The accuracy of detection on ERR of mandibular second molar associated with impacted third molar using panoramic radiography is lower. CBCT is recommended for this clinical scenario.
