title: Surgery Versus Nonsurgery Option for Scissors Bite Treatment.
abstract: BACKGROUND
  This article compared the use of temporary skeletal anchorage devices (TSADs) and orthognathic surgery for scissors bite correction.
  
  
  METHODS
  To correct the scissors bite without orthognathic surgery, a cross-type titanium miniplate was placed with 3 miniscrews (1.5 mm in diameter and 5 mm in length) in the midpalatal area, without a surgical incision and under local anesthesia. In addition, a 1 miniscrew was placed on the buccal alveolar bone to avoid molar extrusion during uprighting. In the surgical case, a 3-piece Le Fort osteotomy was performed to decrease maxillary arch width for transverse correction, and to close the extraction space by anterior retraction. The maxilla was stabilized with 4 L-shaped plates at the zygomatic buttresses and the pyriform aperture, as well as 2 straight plates between the 3 segments.
  
  
  RESULTS
  After 15 months of treatment in the nonsurgery case, the scissors bite was successfully resolved by decreasing maxillary arch width and uprighting the molars. In the mandibular arch, correction of the crowding was aided by extraction of # 41. In the surgery case, after 24 months of treatment in the orthognathic surgery case, the bilateral scissors bite was successfully resolved and the facial asymmetry was corrected. The molar occlusion finished in Class II and the facial profile was improved.
  
  
  CONCLUSIONS
  In scissors bite cases, a good diagnosis will help the clinician to decide whether treatment should involve orthognathic surgery. The authors have shown a case that was corrected with surgery and a case that was corrected using TSAD anchors. Treatment planning must include evaluation of the basal arch width of maxilla and mandible in class I occlusion, any skeletal asymmetry concomitant with a mandibular shift, the inclinations or atypical eruption degree of the posterior teeth, and the number of teeth involved in the scissors bite.
authors.affiliation: *Department of Orthodontics, School of Dentistry, Kyung Hee University †Department of Oral and Maxillofacial Radiology, Kangdong Sacred Heart Hospital, Hallym Medical Center, Seoul, Republic of Korea ‡Division of Orthodontics, Department of Orofacial Science, University of California San Francisco, San Francisco, CA.
authors.forename: Kyung A
authors.initials: KA
authors.lastname: Kim
authors.forename: Jae-Jung
authors.initials: JJ
authors.lastname: Yu
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.forename: Su-Jung
authors.initials: SJ
authors.lastname: Kim
authors.forename: Seong-Hun
authors.initials: SH
authors.lastname: Kim
authors.forename: Gerald
authors.initials: G
authors.lastname: Nelson
mesh_terms: D000328:Adult; D001860:Bone Plates; D002508:Cephalometry / Q000379:methods; D003724:Dental Arch / Q000601:surgery; D003766:Dental Occlusion; D005146:Facial Asymmetry / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000601:surgery* / Q000628:therapy; D008311:Malocclusion, Angle Class I / Q000601:surgery / Q000628:therapy; D008313:Malocclusion, Angle Class III / Q000601:surgery / Q000628:therapy; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008904:Miniaturization; D008963:Molar / Q000473:pathology; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D016382:Orthodontic Appliance Design; D019516:Orthodontic Space Closure; D056948:Orthognathic Surgical Procedures / Q000379:methods*; D019340:Osteotomy, Le Fort / Q000379:methods; D010347:Patient Care Planning; D014087:Tooth Movement Techniques / Q000295:instrumentation