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External root resorption of second molars due to impacted third molars
1BDS, MSc, MOMSRCPS, MFDTRCSED, FIBMS, FFDRCSI(OSOM), FDSRCS, FDSRCPS, FICD. Professor of maxillofacial surgery. Kurdistan Higher Council of Medical Specialties. Ziraah Square, Erbil, Iraq.
Journal of Clinical and Experimental Dentistry
|January 17, 2025
Summary
Impacted third molars can cause external root resorption (ERR) in adjacent second molars. Mesioangular impaction and specific positions significantly increase the risk of ERR, highlighting the need for careful radiographic assessment.
Area of Science:
- Dentistry
- Oral and Maxillofacial Radiology
Background:
- Third molar impaction is a common dental issue.
- External root resorption (ERR) of adjacent teeth is a potential complication.
Purpose of the Study:
- To assess the impact of impacted third molars on external root resorption (ERR) of adjacent second molars.
- To determine the prevalence, severity, and associated factors of ERR in panoramic radiographs.
Main Methods:
- Retrospective cross-sectional study of 750 panoramic radiographs.
- Analysis of patients aged over 16 with impacted third molars.
- Evaluation of ERR in relation to patient demographics, symptoms, impaction angulation, depth, and resorption site.
Main Results:
- External root resorption (ERR) was observed in 4.30% of cases.
- ERR was more prevalent in males and the 16-25 age group.
- Mesioangular impaction (65.6%) and position C (90.6%) were significantly associated with ERR, primarily in the middle third of the root.
Conclusions:
- External root resorption (ERR) of second molars is more common with impacted third molars.
- Significant associations exist between impaction angulation, depth, and ERR.
- Radiographic assessment is crucial for evaluating the risk of ERR associated with impacted third molars.
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