Intentional partial odontectomy?a long-term follow-up study
김현석, 윤필영, 김영균,
소속 상세정보
김현석 ( Kim Hyun-Suk ) - Seoul National University Bundang Hospital Section of Dentistry Department of Oral and Maxillofacial Surgery
윤필영 ( Yun Pil-Young ) - Seoul National University Bundang Hospital Section of Dentistry Department of Oral and Maxillofacial Surgery
김영균 ( Kim Young-Kyun ) - Seoul National University Bundang Hospital Section of Dentistry Department of Oral and Maxillofacial Surgery
Abstract
Background: The surgical extraction of the third molar is the most frequently encountered procedure in oral and maxillofacial surgery and is related with a variety of complications. This study examined the efficacy of intentional partial odontectomy (IPO) in the third molars which have no periapical lesions and are located near important anatomical structures such as inferior alveolar nerve.
Methods: Seven patients (four males, three females, 39.1 ± 11.6 years), who received IPO to reduce the risk of inferior alveolar nerve injury (IANI), were followed long-term. The treated teeth were horizontally impacted third molars in the mandibular left (n = 5) or mandibular right (n = 4) areas and were all ankylosed with the surrounding alveolar bone. During the IPO, the bone around the crown was removed to expose the crown, and then the tooth was resected at cement-enamel junction (CEJ). Any secondary trauma to the healthy root was minimized and remained intact after primary suture.
Results: The mean follow-up time was 63.2 ± 29.8 months, and all sites showed good bone healing after the crown removal. Also, sensory abnormality was not found in any patients after IPO. In one patient, the bone fragments erupted 4 months after IPO. In other patient, an implant placed on second molar site adjacent to the third molar that received IPO was explanted about 2 years after the patient’s persistent discomfort.
Conclusions: In case where high risk of IANI exists, IPO may be chosen alternatively to surgical extraction to reduce the risk of nerve damage.
키워드
Hypercementosis; Mandibular nerve; Tooth ankyloses; Tooth extraction
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