title: [Temporomandibular function after malocclusion operations compared with a representative population group study].
abstract: OBJECTIVE
  The temporomandibular function of patients after orthognathic surgery was evaluated with the Helkimo index (D 0-III) and compared with a normal population.
  
  
  METHODS
  Temporomandibular disorders (TMD) were evaluated with the Helkimo index (D 0-III) in a group of patients (n=105, F=69, M=36) after osteotomies. The average follow-up time was 47 months (9-141 months). The osteotomies performed were as follows: 58 bilateral sagittal split osteotomies, 12 Le Fort I osteotomies, 22 bimaxillary osteotomies, and 13 segment-osteotomies. A control group (n=202, F=114, M=88, age 20-39 years) was examined in an epidemiological study. The statistical analysis was performed using Windows software SPSS 10.0.
  
  
  RESULTS
  In 82.8% of the patients no symptoms or mild dysfunction were found. The comparison between the patient group (31.4%) and the control group (31.7%) revealed a similar frequency. The most frequent dysfunction was a reduced mobility of the mandible, which determined the statistical significance (p<0,05) between the patients and the control group for the dysfunction group D II and D III. The chi-square test could not detect any difference between sex and the kind of osteotomy with regard to dysfunction.
authors.affiliation: Klinik und Poliklinik für Mund-, Kiefer- und Plastische Gesichtschirurgie, Martin-Luther-Universität Halle-Wittenberg. peter.maurer@medizin.uni-halle.de
authors.forename: P
authors.initials: P
authors.lastname: Maurer
authors.forename: J J
authors.initials: JJ
authors.lastname: Bock
authors.forename: C
authors.initials: C
authors.lastname: Otto
authors.forename: A W
authors.initials: AW
authors.lastname: Eckert
authors.forename: J
authors.initials: J
authors.lastname: Schubert
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D005500:Follow-Up Studies; D005858:Germany / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D008310:Malocclusion / Q000601:surgery*; D008334:Mandible / Q000601:surgery*; D008437:Maxilla / Q000601:surgery*; D009971:Orthodontics, Corrective; D010027:Osteotomy; D019340:Osteotomy, Le Fort; D011183:Postoperative Complications / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D012016:Reference Values; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology