title: Short-term and long-term soft tissue profile changes after mandibular advancements using rigid fixation techniques.
abstract: This study was designed to describe short- and long-term soft tissue profile changes that follow surgical advancement of the mandible, to provide a database for prediction of facial changes following surgery. A number of hard and soft tissue landmarks were identified on serial cephalometric tracings of 31 patients. The long-term data (x = 14.0 months postsurgery) showed that changes in soft tissue landmarks overlying the skeletal structures followed their hard tissue counterpart in a 1:1 ratio in the horizontal direction. Horizontal hard to soft tissue landmark changes between mandibular incisor and lower lip, however, were found to be different; the average ratio was 0.43:1.00. Short-term data (x = 2.7 months postsurgery) showed soft tissue changes to be stable when compared to long-term changes.
authors.forename: R
authors.initials: R
authors.lastname: Hernandez-Orsini
authors.forename: A
authors.initials: A
authors.lastname: Jacobson
authors.forename: D M
authors.initials: DM
authors.lastname: Sarver
authors.forename: A
authors.initials: A
authors.lastname: Bartolucci
mesh_terms: D000293:Adolescent; D000328:Adult; D002508:Cephalometry; D005145:Face / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D007103:Immobilization; D008297:Male; D008334:Mandible / Q000601:surgery*; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods