title: Observation of osseous healing after intraoral vertical ramus osteotomy: focus on computed tomography values.
abstract: OBJECTIVE
  The purpose of this study was to observe long-term osseous healing of the cleavage space between bone fragments after intraoral vertical ramus osteotomy using computed tomographic (CT) values.
  
  
  METHODS
  CT examinations were performed to observe long-term osseous healing immediately after intraoral vertical ramus osteotomy and at 6 months, 1 year, and 2 years postoperatively. Bone fragments were observed on the interior and lateral sides. CT values between bone fragments were used to measure the range of each point within a 1.7- × 1.7-mm square, and the mean of the measurements was calculated.
  
  
  RESULTS
  CT values between bone fragments increased significantly over time at 1 month, 6 months, 1 year, and 2 years after surgery.
  
  
  CONCLUSIONS
  Osseous healing in the cleavage between bone fragments after intraoral vertical ramus osteotomy was successful according to CT values.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Satomi
authors.initials: S
authors.lastname: Arimoto
authors.forename: Takumi
authors.initials: T
authors.lastname: Hasegawa
authors.forename: Kotaro
authors.initials: K
authors.lastname: Kaneko
authors.forename: Chizu
authors.initials: C
authors.lastname: Tateishi
authors.forename: Shungo
authors.initials: S
authors.lastname: Furudoi
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shibuya
authors.forename: Takahide
authors.initials: T
authors.lastname: Komori
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D019412:Anatomy, Cross-Sectional; D016723:Bone Remodeling / Q000502:physiology; D002508:Cephalometry / Q000379:methods; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019248:Jaw Fixation Techniques / Q000295:instrumentation; D008137:Longitudinal Studies; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D063168:Mandibular Osteotomy / Q000379:methods*; D011378:Prognathism / Q000601:surgery; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014945:Wound Healing / Q000502:physiology; D055815:Young Adult