Transverse displacement of the proximal segment after bilateral sagittal osteotomy

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
Jonas P BecktorEugene E Keller

Abstract

The aim of the present investigation was to evaluate the transverse displacement of the proximal segment and ramus rotation after a bilateral sagittal osteotomy (BSO) with rigid internal fixation (RIF) using bicortical LAG screws. We conducted a retrospective review of 37 patients (14 males and 23 females, age range of 14 to 55 years) who underwent a mandibular advancement with BSO and RIF. Posteroanterior and lateral cephalometric radiographs were obtained 1 to 8 weeks before and 1 to 4 weeks after surgery. The transverse displacement and angulation of the proximal segments after surgery were measured on posteroanterior radiographs, using the best-fit method. The amount of mandibular advancement was compared with the amount of transverse displacement of the proximal segments. In the 1 to 4-week postoperative period after a BSO, 36 of 37 subjects showed an increased transverse intergonion distance (5.6 mm) (P <.0001) and 35 of 37 patients showed an increased transverse interramus width (3.3 mm) (P <.0001). No correlation was found between mandibular advancement and transverse displacement of the proximal segment. The study results indicate that transverse displacements of the proximal segments occur with BSO and RIF. The clinic...Continue Reading

Citations

Jan 1, 2010·Dental press journal of orthodontics·Alexandre Trindade Simões da MottaMarco Antonio de Oliveira Almeida
Mar 15, 2014·Journal of Applied Oral Science : Revista FOB·José Valladares-NetoJosé Rino-Neto
Aug 3, 2019·Journal of Maxillofacial and Oral Surgery·Tushar Deshmukh, N K Sahoo
Mar 14, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Lauren EhardtLucia Cevidanes
Dec 19, 2006·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Anne D AngleRose D Sheats
Sep 2, 2021·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Eun-Hye ParkYoon-Goo Kang

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