External Root Resorption and Caries of Mandibular Second Molar in Association with Third Molar Impaction Status

Onur Şahin, Emine Şebnem Kurşun Çakmak, Seval Bayrak, Kemal Özgür Demiralp, Handan Ankaralı

Abstract


Impaction status of a mandibular third molar (M3) leads to some pathological conditions. Objective: Thisretrospective study was conducted to compare the effect of erupted (e-M3) and impacted mandibular third molars(i-M3) on caries in the adjacent second molar and external root resorption (ERR). Methods: We used cone beamcomputed tomography (CBCT) images of 200 patients with a mean age of 28.19 ± 8.3 years who had an e-M3on one side of the mandible and an i-M3 on the other side of the mandible. All the images were evaluated for theexistence of caries and ERR. Results: Caries was detected in 32.5% of cases of i-M3 and in 21% of cases of e-M3(p = 0.01). ERR was present in 18.5% of cases of i-M3 and no resorption was observed in cases of e-M3 (p = 0.00).Conclusions: Caries and ERR in cases of i-M3 can be reliably identified via CBCT scan. Among patients withcaries in the i-M3 group, the degree of caries was significantly lower on the other side of the mandible. Instead ofprophylactic removal of e-M3, periodic clinical and radiologic examinations are advised.


Keywords


caries; CBCT; external root resorption; mandibular third molar

DOI: https://doi/org/10.14693/jdi.v26i1.1271

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