Clinical evaluation for coronectomy of the impacted mandibular third molars in close proximity to inferior alveolar nerve

doi:10.19438/j.sjos.2019.01.017

Shanghai Journal of Stomatology ›› 2019, Vol. 28 ›› Issue (1): 85-88.doi: 10.19438/j.sjos.2019.01.017

• Clinical Reports • Previous Articles Next Articles

Clinical evaluation for coronectomy of the impacted mandibular third molars in close proximity to inferior alveolar nerve

WU Xing-chen¹, LI Ying², ZHAO Jun-jun¹

1.Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center of Stomatology; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology. Shanghai200011;
2.Department of Stomatology, Shanghai Hospital of Integrated Traditional Chinese with Western Medicine. Shanghai200082, China

Received:2018-03-29 Revised:2018-06-12 Online:2019-02-25 Published:2019-04-12

Abstract

Abstract: PURPOSE: To evaluate the outcome of coronectomy for management of impacted mandibular third molars in close proximity to inferior alveolar nerve (IAN). METHODS: Ten patients with impacted mandibular third molars which approached or was close to the inferior alveolar nerve diagnosed on panoramic film and cone-beam CT (CBCT) scan were included in the study. Coronectomy was conducted at the cemento-enamel junction, leaving the roots below the alveolar crest and primary closure was performed. After the root apex was pushed away from the inferior alveolar nerve, the impacted lower third molar was then removed. RESULTS: Ten patients had little post-operative pain and swelling, none of them had IAN injury or infection. Only 1 patient was failed to move the roots away from IAN and the roots were left in the alveolar socket, but without any symptoms and side effects during 1 year of follow-up. CONCLUSIONS: Coronectomy is effective in controlling inferior alveolar nerve injury following third molar surgery in radiographically evaluated high risk cases and it has very low incidence of complications.

Key words: Coronectomy, Impacted mandibular third molars, Inferior alveolar nerve

CLC Number:

R782.11

WU Xing-chen, LI Ying, ZHAO Jun-jun. Clinical evaluation for coronectomy of the impacted mandibular third molars in close proximity to inferior alveolar nerve[J]. Shanghai Journal of Stomatology, 2019, 28(1): 85-88.

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Clinical evaluation for coronectomy of the impacted mandibular third molars in close proximity to inferior alveolar nerve

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