Application of digital guide in the osteotomy of benign lesions in mandible with preservation of the inferior alveolar neurovascular bundle: report of one case

China Journal of Oral and Maxillofacial Surgery ›› 2014, Vol. 12 ›› Issue (1): 45-50.

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Application of digital guide in the osteotomy of benign lesions in mandible with preservation of the inferior alveolar neurovascular bundle: report of one case

HUANG Dong¹, HE Dong-mei¹, YANG Chi¹, CHEN Min-jie¹, YUAN Jian-bing², BAI Guo¹, CHEN Zhuo-zhi¹

1.Department of Oral Surgery, Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine； Shanghai Key Laboratory of Stomatology. Shanghai 200011; 2.School of Mechanical and Power Engineering, Shanghai Jiao Tong University. Shanghai 200240, China

Received:2013-07-29 Revised:2013-11-22 Online:2014-02-10 Published:2014-02-10
Supported by:
Supported by Research Fund of Science and Technology Committee of Shanghai Municipality (08DZ2271100, 13XD1402300) and Research Fund of Biomedical Engineering of Shanghai Jiao Tong University (YG2009MS42).

Abstract

Abstract: PURPOSE: To discuss the application of digital guide in the treatment of benign lesions in mandible with preservation of the inferior alveolar neurovascular bundle, and to evaluate its effect. METHODS: Preoperative planning based on CT data of a patient with mandibular ossifying fibroma (OF) was done using ProPlan CMF 1.3. The mandibular canal on the affected side was segmented, and a special digital guide was made to guide the osteotomy 2 mm below the canal to preserve the inferior alveolar neurovascular bundle, and mirrored mandible was used to help the positioning of the reconstruction plate. The design and the postoperative CT was merged using the software to evaluate the accuracy of osteotomy, the sensation of lower lip and the pulp vitality were measured to evaluate the function of the inferior alveolar nerve. SPSS 17.0 software package was used for statistical analysis. RESULTS: The operation successfully removed the affected mandible and preserved the inferior alveolar neurovascular bundle. The costochondral flap was positioned accurately according to the guide. Follow-up results showed good facial symmetry, existence of the sensation in lower lip and no significant difference between the pulp vitality on both sides. CONCLUSIONS: The application of digital guide can help resection of mandibular benign lesions, as well as preserving the inferior alveolar neurovascular bundle and guiding the reconstruction procedure. It is a useful technique for functional surgery.

Key words: Digital guide, Inferior alveolar neurovascular bundle, Mandible reconstruction

HUANG Dong, HE Dong-mei, YANG Chi, CHEN Min-jie, YUAN Jian-bing, BAI Guo, CHEN Zhuo-zhi. Application of digital guide in the osteotomy of benign lesions in mandible with preservation of the inferior alveolar neurovascular bundle: report of one case[J]. China Journal of Oral and Maxillofacial Surgery, 2014, 12(1): 45-50.

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Application of digital guide in the osteotomy of benign lesions in mandible with preservation of the inferior alveolar neurovascular bundle: report of one case

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