Patient-specific 3D-printed cutting guides for high oblique sagittal osteotomy—an innovative surgical technique for nerve preservation in orthognathic surgery. Issue 8 (26th August 2021)

• Record Type: Journal Article
• Authors: Kämmerer, Peer W; Müller, Daniel; Linz, Friedemann; Peron, Priscila Ferrari; Pabst, Andreas
• Is Part Of: Journal of surgical case reports. Volume 2021:Issue 8(2021)
• Publication Date: 2021-08-26
• Subjects: Surgery -- Periodicals; Surgery -- Case studies -- Periodicals; 617.005
• DOI: 10.1093/jscr/rjab345
• Languages: English
• ISSNs: 2042-8812

Abstract

Abstract: Bilateral sagittal split osteotomy (BSSO) of the mandible according to Obwegeser/Dal Pont is considered to be gold standard in orthognathic surgery. Frequently reported complications of BSSO are injuries of the mandibular nerve resulting in paresthesia/anesthesia as well as inadequate mandibular bone fracturing ('bad split'). High oblique sagittal osteotomy (HOSO) was introduced to overcome these complications. We present an innovative HOSO modification using patient-specific 3D-printed cutting guides positioned on the outside of the ascending mandibular ramus and fixed in the incisura semilunaris, precisely marking the optimal height and angle of the osteotomy. Advantages are a decreased operation time due to the simplicity of this less invasive procedure, a potentially reduced frequency of mandibular nerve damage and bad splits as well as a lower bleeding risk.