CBCT Study on Maxillary Middle and High Impacted Third Molars Causing External Root Resorption of Adjacent Second Molars

doi:10.13701/j.cnki.kqyxyj.2023.03.005

Abstract

Abstract: Objective: To investigate the relationship between maxillary mid-high proximal-mid, horizontal, or vertical impacted third molars and external root resorption (ERR) of adjacent maxillary second molars. Methods: Clinical data were collected from 88 patients with a total of 93 affected teeth visited from 2019 to 2022, and the factors associated with the ERR of adjacent second molar caused by a maxillary mid-high proximal-mid, horizontal, or vertical impacted third molar were analyzed. Results: The prevalence of maxillary second molar ERR was 44.1%, and there was no statistically significant difference in the gender, age, and direction of maxillary third molar obstruction (P>0.05). However, there was a statistically significant difference in the depth of maxillary wisdom teeth obstruction (P<0.05). Conclusion: High maxillary third molar obstruction is more likely to cause second molar ERR, and early prophylactic extraction is recommended in clinical practice.

Key words: maxillary third molar impaction, maxillary second molar external root resorption, CBCT

ZHOU Lei, LI Yumei, WANG Chuanjiang. CBCT Study on Maxillary Middle and High Impacted Third Molars Causing External Root Resorption of Adjacent Second Molars[J]. Journal of Oral Science Research, 2023, 39(3): 206-210.

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