title: Facilitating ramus lengthening following mandibular-dependent surgical closing of a skeletal open bite with short ramus: a new modified technique.
abstract: Recent studies have shown that a sagittal split ramus osteotomy (SSRO) with counterclockwise rotation of the mandible using rigid fixation is relatively a stable procedure when used to correct a mild skeletal anterior open bite in cases where a maxillary osteotomy is not indicated to improve or enhance facial aesthetics. When an open bite accompanies a short ramus, the closing rotation will result is a large amount of ramus lengthening and downward movement that stretches the major muscle-ligament structures attached to the ramus, with a risk of relapse. In order to overcome this problem we have adopted a modified surgical technique in which a considerable amount of ramus lengthening following mandibular rotating can be achieved. In this paper, the technique will be introduced and illustrated. Advantages and disadvantages will be also discussed.
authors.affiliation: Division of Maxillofacial Surgery, Department of Oral Medicine and Surgery, Graduate School of Dentistry, Tohoku University, 4-1 Seiryo-machi, Aoba-ku 980-8575, Sendai, Japan.
authors.forename: Zaher
authors.initials: Z
authors.lastname: Aymach
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawamura
mesh_terms: D006801:Humans; D019248:Jaw Fixation Techniques; D008334:Mandible / Q000601:surgery*; D024343:Open Bite / Q000601:surgery*; D056948:Orthognathic Surgical Procedures / Q000379:methods*; D010027:Osteotomy / Q000379:methods