Mandibular midline osteotomy for correction of bimaxillary transverse discrepancy: a technical note

Mrunalini Ramanathan; Rie Sonoyama-Osako; Yukiho Shimamura; Taro Okui; Takahiro Kanno

doi:10.5125/jkaoms.2023.49.3.107

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자료유형: 학술저널

저자정보: Mrunalini Ramanathan (Department of Oral and Maxillofacial Surgery Shimane University Faculty of Medicine Izumo Japan) Rie Sonoyama-Osako (Department of Oral and Maxillofacial Surgery Shimane University Faculty of Medicine Izumo Japan) Yukiho Shimamura (Department of Oral and Maxillofacial Surgery Shimane University Faculty of Medicine Izumo Japan) Taro Okui (Department of Oral and Maxillofacial Surgery Shimane University Faculty of Medicine Izumo Japan) Takahiro Kanno (Department of Oral and Maxillofacial Surgery Shimane University Faculty of Medicine Izumo Japan)

저널정보: 대한구강악안면외과학회 대한구강악안면외과학회지 대한구강악안면외과학회지 제49권 제3호

발행연도: 2023.6

수록면: 107 - 113 (7page)

DOI: 10.5125/jkaoms.2023.49.3.107

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Bimaxillary transverse width discrepancies are commonly encountered among patients with dentofacial deformities. Skeletal discrepancies should be diagnosed and managed appropriately with possible surgical corrections. Transverse width deficiencies can present in varieties of combinations involving the maxilla and mandible. We observed that in a significant proportion of cases, the maxilla is normal, and the mandible showed deficiency in the transverse dimension after pre-surgical orthodontics. We designed novel osteotomy techniques to enhance mandibular transverse width correction, as well as simultaneous genioplasty. Chin repositioning along any plane is applicable concomitant with mandibular midline arch widening. When there is a requirement for larger widening, gonial angle reduction may be necessary. This technical note focuses on key points in management of patients with transversely deficient mandible and the factors affecting the outcome and stability. Further research on the maximum amount of stable widening will be conducted. We believe that developing evidence-based additional modifications to existing conventional surgical procedures can aid precise correction of complex dentofacial deformities.

#Orthognathic surgery #Mandibular osteotomy #Maxillary osteotomy #Transverse correction

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