title: 2/3 osteotomy for lengthening the mandible in dogs by gradual distraction.
abstract: Successful lengthening of the mandible by gradual distraction has been reported previously. There are various methods for osteotomy before distraction osteogenesis. In this paper, a new type of osteotomy, performed on growing dogs as a model, is reported. Ten mongrel dogs, aged 6 months, were studied. A unilateral 2/3 osteotomy was performed, and an external lengthening device was fixed to the mandible perpendicular to the osteotomy. Seven days after the operation, the mandible was lengthened by 1 mm per day. The dogs were sacrificed for histological study at the end of the distraction on days 14, 28, 56 and 120 following completion of the distraction.
authors.affiliation: Plastic Surgery Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences.
authors.forename: J
authors.initials: J
authors.lastname: Miao
authors.forename: G
authors.initials: G
authors.lastname: Li
authors.forename: P
authors.initials: P
authors.lastname: Zhao
authors.forename: G
authors.initials: G
authors.lastname: Chen
authors.forename: L
authors.initials: L
authors.lastname: Teng
authors.forename: Y
authors.initials: Y
authors.lastname: Ling
mesh_terms: D000818:Animals; D004285:Dogs; D016267:External Fixators; D008334:Mandible / Q000098:blood supply / Q000601:surgery*; D019857:Osteogenesis, Distraction / Q000379:methods*; D010027:Osteotomy / Q000379:methods*