title: Three-dimensional retraction of anterior teeth with orthodontic miniplates in patients with temporomandibular disorder.
abstract: Vertical dimension control is critical for adults with Class II high-angle malocclusions. If the patient has a temporomandibular disorder, this requirement is exacerbated. When extraction is planned, the treatment challenge is further increased. This article reports on a new biomechanical design (C-therapy) appropriate for anterior segment retraction with excellent control of the vertical dimension, even in a Class II high-angle patient with a temporomandibular disorder. Maximum retraction of the maxillary anterior segment can be achieved with a lingual retractor and a palatal miniplate without appliances on the maxillary posterior segments. Mandibular anterior vertical height was well controlled by a second miniplate in the mental region. This device also contributed to mandibular anchorage reinforcement. A patient with temporomandibular disorder symptoms treated with this approach is shown.
authors.affiliation: Division of Orthodontics, Department of Orofacial Science, University of California, San Francisco, CA, USA.
authors.forename: Gerald
authors.initials: G
authors.lastname: Nelson
authors.forename: Hyo-Won
authors.initials: HW
authors.lastname: Ahn
authors.forename: Sung-Hee
authors.initials: SH
authors.lastname: Jeong
authors.forename: Jun-Shik
authors.initials: JS
authors.lastname: Kim
authors.forename: Seong-Hun
authors.initials: SH
authors.lastname: Kim
authors.forename: Kyu-Rhim
authors.initials: KR
authors.lastname: Chung
mesh_terms: D001696:Biomechanical Phenomena; D001860:Bone Plates; D003799:Dental Stress Analysis; D005260:Female; D006801:Humans; D007180:Incisor; D008312:Malocclusion, Angle Class II / Q000150:complications / Q000628:therapy*; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D016382:Orthodontic Appliance Design; D013705:Temporomandibular Joint Disorders / Q000150:complications*; D014081:Tooth Extraction; D014087:Tooth Movement Techniques / Q000295:instrumentation* / Q000379:methods; D014716:Vertical Dimension; D055815:Young Adult