title: [Longitudinal changes in the acoustic temporomandibular symptoms due to different procedures of orthognathic surgery].
abstract: A longitudinal study of TMJ sounds prior to and after combined orthodontic-orthognathic surgical procedures was carried out. The relative frequency of such sounds two days prior to operation (T0) and three months (T1), eight months (T2), 14.5 months (T3), and 25.5 months (T4) postoperatively remained--treatment-independently--largely unchanged. Chances in frequency between T0 and T4 showed only a nonsignificant tendency to differ in comparison with changes seen after orthodontic treatment (A) only. An analysis of individual changes revealed that after Le Fort I osteotomy (B) and bimaxillary procedures/posterior mandibular repositioning (D), no change in the preoperative sounds is to be expected. In contrast, following mandibular advancement (C) TMJ sounds first disappeared, in particular in the period immediately following operation (T0-T1), but also subsequently reappeared. The difference vis-a-vis group B (Le Fort I osteotomies) was statistically significant (group B vs. group C: p less than or equal to 0.01.
authors.affiliation: Abteilung für Kieferorthopädie, Georg-August-Universität Göttingen.
authors.forename: B
authors.initials: B
authors.lastname: Zimmer
authors.forename: E
authors.initials: E
authors.lastname: Heinrichs
authors.forename: D
authors.initials: D
authors.lastname: Kubein-Meesenburg
mesh_terms: D001314:Auscultation; D006801:Humans; D008137:Longitudinal Studies; D008334:Mandible / Q000601:surgery; D010027:Osteotomy; D011184:Postoperative Period; D013704:Temporomandibular Joint / Q000503:physiopathology*; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery; D013997:Time Factors
vernacular_title: Longitudinale Vernderungen von akustischen Kiefergelenksymptomen durch verschiedene Verfahren der orthognathen Chirurgie.