title: Preservation of the inferior alveolar neurovascular bundle in the osteotomy of benign lesions of the mandible using a digital template.
abstract: Our aim was to evaluate the effect of a digital template in the preservation of the inferior alveolar neurovascular bundle during osteotomy for benign lesions of the mandible in 6 patients who were treated with mandibular osteotomies during 2013. Computed tomographic (CT) data were imported into ProPlan CMF 1.4 software. The borders of the lesion and the inferior alveolar canal were marked, and a digital template designed to mark the borders, outline the canal, and guide the osteotomy. A mirror image of the unaffected mandible was used to make a stereolithographic model by a rapid prototyping technique to prefabricate the reconstruction plate for the bone graft. The accuracy of the designs and the templates was evaluated during operation and postoperatively by CT. The sensation of the skin was tested using a Neurometer® CPT (current perception threshold) sensory detector (Neurotron Inc, Baltimore USA) to evaluate the function of the preserved inferior alveolar neurovascular bundle during follow up. With the digital template it was possible to guide removal of the bony lesion while accurately protecting the neurovascular bundle. Follow up for a mean of 8 months (range 5 -12) showed good facial symmetry, a stable occlusion, and recovery of sensation in the lower lip on the affected side. We conclude that a digital template can successfully help the resection of benign lesions of the mandible while preserving the function of the inferior alveolar neurovascular bundle.
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Huang
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
authors.forename: MinJie
authors.initials: M
authors.lastname: Chen
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China. Electronic address: lucyhe119@163.com.
authors.forename: DongMei
authors.initials: D
authors.lastname: He
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China. Electronic address: yangchi63@hotmail.com.
authors.forename: Chi
authors.initials: C
authors.lastname: Yang
authors.affiliation: School of Mechanical and Power Engineering, Shanghai Jiao Tong University. Shanghai, China.
authors.forename: JianBing
authors.initials: J
authors.lastname: Yuan
authors.affiliation: School of Mechanical and Power Engineering, Shanghai Jiao Tong University. Shanghai, China.
authors.forename: Guo
authors.initials: G
authors.lastname: Bai
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
authors.forename: YiWen
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
authors.forename: WenBin
authors.initials: W
authors.lastname: Wei
authors.affiliation: Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
authors.forename: ZhuoZhi
authors.initials: Z
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D001860:Bone Plates; D016025:Bone Transplantation / Q000295:instrumentation; D017076:Computer-Aided Design; D005260:Female; D018214:Fibroma, Ossifying / Q000601:surgery; D005357:Fibrous Dysplasia of Bone / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008046:Lip / Q000294:innervation; D008297:Male; D008334:Mandible / Q000098:blood supply* / Q000601:surgery; D008336:Mandibular Diseases / Q000601:surgery*; D008339:Mandibular Neoplasms / Q000601:surgery*; D008340:Mandibular Nerve / Q000033:anatomy & histology*; D063175:Mandibular Reconstruction / Q000295:instrumentation; D008953:Models, Anatomic; D010019:Osteomyelitis / Q000601:surgery; D010027:Osteotomy / Q000379:methods*; D010347:Patient Care Planning; D020127:Recovery of Function / Q000502:physiology; D012684:Sensory Thresholds / Q000502:physiology; D025321:Surgery, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods; D014110:Touch / Q000502:physiology; D055815:Young Adult
keywords: Digital template; Inferior alveolar neurovascular bundle; Mandible reconstruction; Mandibular Benign Lesions