title: Comparison of material-related complications after bilateral sagittal split mandibular setback surgery: biodegradable versus titanium miniplates.
abstract: OBJECTIVE
  The aim of the present prospective study was to compare material-related complications using biodegradable and titanium miniplates after bilateral sagittal split mandibular setback surgery.
  
  
  METHODS
  The subjects included 200 Japanese adults (67 men and 133 women, age range 18 to 45 years) with jaw deformities diagnosed as mandibular prognathism. All patients were prospectively and consecutively randomized to 2 study groups, receiving biodegradable or titanium fixation plates. Of the 200 patients, 110 underwent bilateral sagittal split ramus osteotomy with a biodegradable fixation plate and 90 underwent bilateral sagittal split ramus osteotomy with a titanium metal plate. The clinical records and radiologic findings of the patients were reviewed, and the incidence of material-related complications was compared.
  
  
  RESULTS
  The incidence of postoperative complications and breakage in the biodegradable group was 8.2% (9 cases) and in the titanium group was 3.3% (3 cases). No statistically significant difference in the incidence of complications was found between the 2 groups. Fractures of the biodegradable plate occurred at a significantly greater frequency in patients with asymmetry than in patients without asymmetry.
  
  
  CONCLUSIONS
  Biodegradable plates were reliable with minimal material-related complications. However, the use of biodegradable plates should be recommended for minimally loaded situations.
authors.affiliation: Division of Oral and Maxillofacial Surgery, Department of Sensory and Motor Organs, Miyazaki University Faculty of Medicine, Miyazaki, Japan. yizumi@fc.miyazaki-u.ac.jp
authors.forename: Izumi
authors.initials: I
authors.lastname: Yoshioka
authors.forename: Kaori
authors.initials: K
authors.lastname: Igawa
authors.forename: Jyunko
authors.initials: J
authors.lastname: Nagata
authors.forename: Maho
authors.initials: M
authors.lastname: Yoshida
authors.forename: Yasufumi
authors.initials: Y
authors.lastname: Ogawa
authors.forename: Takesi
authors.initials: T
authors.lastname: Ichiki
authors.forename: Rie
authors.initials: R
authors.lastname: Yokota
authors.forename: Koichi
authors.initials: K
authors.lastname: Takamori
authors.forename: Koji
authors.initials: K
authors.lastname: Kashima
authors.forename: Sumio
authors.initials: S
authors.lastname: Sakoda
mesh_terms: D020341:Absorbable Implants / Q000009:adverse effects*; D000293:Adolescent; D000328:Adult; D001672:Biocompatible Materials / Q000009:adverse effects*; D001696:Biomechanical Phenomena; D001860:Bone Plates / Q000009:adverse effects*; D002508:Cephalometry / Q000379:methods; D004868:Equipment Failure; D005146:Facial Asymmetry / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D059229:Osteotomy, Sagittal Split Ramus / Q000009:adverse effects / Q000295:instrumentation*; D010149:Postoperative Pain / Q000209:etiology; D017060:Patient Satisfaction; D011183:Postoperative Complications; D011378:Prognathism / Q000601:surgery; D011446:Prospective Studies; D013530:Surgical Wound Infection / Q000209:etiology; D014025:Titanium / Q000009:adverse effects*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D014025:Titanium