Purpose: The aim of this study was to investigate the protection of the inferior alveolar neurovascular bundle in alveolar bone operation in conditions such as chronic osteomyelitis and cementoma. Patients and Methods: The study enrolled 7 cases, 4 with chronic osteomyelitis and 3 with cementoma with pain. Computed tomography scan and 3-dimensional reconstruction were performed for the diseases. Data were processed by ProPlan CMF 1.3 software. The edge of lesion was defined and the inferior alveolar nerve was marked. Template was designed to guide the osteotomy line. Piezosurgery was used for osteotomy, with the avoidance of nerve canal. Current perception threshold (CPT) was performed to evaluate the nerve function after operation. Results: The CPT difference of the affected side before and after operation showed no statistically significant differences compared with that of the unaffected side (P = 0.0556). Conclusions: Digital template protects the inferior alveolar neurovascular bundle with the aid of piezosurgery during alveolar bone resection, which obtained satisfying clinical results. As powerful assistive tools of functional surgery, digital template and piezosurgery achieve both the purposes of treatment and function. Address correspondence and reprint requests to Minjie Chen, MD, Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhi-zao-ju Road, Shanghai 200011, China; E-mail: chenminjietougao@126.com; 407102560@qq.com Received 6 April, 2017 Accepted 4 October, 2017 The authors disclose no conflicts of interest. © 2018 by Mutaz B. Habal, MD.
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Αλέξανδρος Γ. Σφακιανάκης
ΩτοΡινοΛαρυγγολόγος
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Άγιος Νικόλαος Κρήτη 72100
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