title: The skeletal stability after maxillo-mandibular osteotomy with a "physiological positioning strategy".
abstract: The aim of this study was to estimate skeletal and dental stability after maxillomandibular osteotomy with physiological positioning. Ten patients (7 men and 3 women) with skeletal mandibular prognathism were treated by conventional Le Fort I osteotomy for the maxilla and unfixed short lingual osteotomy for the mandible together with physiological positioning. We used cephalometric analysis to evaluate the skeletal and dental stability preoperatively, immediately after maxillomandibular osteotomy, and more than 1 year later. The immediately postoperative measurements for the SNA and the SN-palatal planes were 0.15° (p=0.67) and 1.0° (p=0.17), respectively. The positions of the anterior nasal spine, posterior nasal spine, and A point showed minimal changes 1 year postoperatively. The postoperative difference for SNB was 0.76° (p=0.04). Dental stability was apparent postoperatively. We conclude that reliable stability of both the maxilla and the mandible was achieved after maxillomandibular osteotomy with physiological positioning in patients with mandibular prognathism.
authors.affiliation: Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences; Division of Dentistry and Oral Surgery, Department of Sensory and Locomotor Medicine, Faculty of Medical Sciences, University of Fukui. Electronic address: seigoohba@gmail.com.
authors.forename: Seigo
authors.initials: S
authors.lastname: Ohba
authors.affiliation: Department of Special Care Dentistry, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Noriko
authors.initials: N
authors.lastname: Nakao
authors.affiliation: Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Yuya
authors.initials: Y
authors.lastname: Nakatani
authors.affiliation: Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences; Department of Rehabilitation Medicine, Fujita Health University School of Medicine.
authors.forename: Takako
authors.initials: T
authors.lastname: Kawasaki
authors.affiliation: Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Tokutarou
authors.initials: T
authors.lastname: Minamizato
authors.affiliation: Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Koga
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Haruka
authors.initials: H
authors.lastname: Kohara
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Noriaki
authors.initials: N
authors.lastname: Yoshida
authors.affiliation: Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences.
authors.forename: Izumi
authors.initials: I
authors.lastname: Asahina
mesh_terms: D000293:Adolescent; D000328:Adult; D002508:Cephalometry / Q000379:methods; D002680:Chin / Q000473:pathology; D005081:Exercise Therapy / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008334:Mandible / Q000473:pathology; D063168:Mandibular Osteotomy / Q000379:methods*; D008437:Maxilla / Q000473:pathology; D009295:Nasal Bone / Q000473:pathology; D017090:Occlusal Splints; D019340:Osteotomy, Le Fort / Q000379:methods*; D010159:Palate / Q000473:pathology; D010347:Patient Care Planning; D011378:Prognathism / Q000473:pathology / Q000601:surgery*; D012658:Sella Turcica / Q000473:pathology; D016896:Treatment Outcome; D055815:Young Adult
keywords: jaw exercise; maxillo-mandibular fixation (MMF); maxillo-mandibular osteotomy; physiological positioning strategy (PPS); short lingual osteotomy (SLO)