title: Camouflage treatment of skeletal Class III malocclusion with multiloop edgewise arch wire and modified Class III elastics by maxillary mini-implant anchorage.
abstract: OBJECTIVE
  To evaluate the effect of the multiloop edgewise arch wire (MEAW) technique with maxillary mini-implants in the camouflage treatment of skeletal Class III malocclusion.
  
  
  METHODS
  Twenty patients were treated with the MEAW technique and modified Class III elastics from the maxillary mini-implants. Twenty-four patients were treated with MEAW and long Class III elastics from the upper second molars as control. Lateral cephalometric radiographs were obtained and analyzed before and after treatment, and 1 year after retention.
  
  
  RESULTS
  Satisfactory occlusion was established in both groups. Through principal component analysis, it could be concluded the anterior-posterior dental position, skeletal sagittal and vertical position, and upper molar vertical position changed within groups and between groups; vertical lower teeth position and Wits distance changed in the experimental group and between groups. In the experimental group, the lower incisors tipped lingually 2.7 mm and extruded 2.4 mm. The lingual inclination of the lower incisors increased 3.5°. The mandibular first molars tipped distally 9.1° and intruded 0.4 mm. Their cusps moved 3.4 mm distally. In the control group, the upper incisors proclined 3°, and the upper first molar extruded 2 mm. SN-MP increased 1.6° and S-Go/N-ME decreased 1.
  
  
  CONCLUSIONS
  The MEAW technique combined with modified Class III elastics by maxillary mini-implants can effectively tip the mandibular molars distally without any extrusion and tip the lower incisors lingually with extrusion to camouflage skeletal Class III malocclusions. Clockwise rotation of the mandible and further proclination of upper incisors can be avoided. The MEAW technique and modified Class III elastics provided an appropriate treatment strategy especially for patients with high angle and open bite tendency.
authors: State Key Laboratory of Oral Disease, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, China.
authors: Shushu
authors: S
authors: He
authors: Jinhui
authors: J
authors: Gao
authors: Peter
authors: P
authors: Wamalwa
authors: Yunji
authors: Y
authors: Wang
authors: Shujuan
authors: S
authors: Zou
authors: Song
authors: S
authors: Chen
mesh_terms: D002508:Cephalometry / Q000379:methods; D015921:Dental Implants; D003766:Dental Occlusion; D020724:Elastomers / Q000737:chemistry; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008313:Malocclusion, Angle Class III / Q000628:therapy*; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000473:pathology; D008963:Molar / Q000473:pathology; D024343:Open Bite / Q000628:therapy; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation / Q000379:methods*; D009967:Orthodontic Appliances; D009969:Orthodontic Wires; D025341:Principal Component Analysis; D014087:Tooth Movement Techniques / Q000295:instrumentation / Q000379:methods; D016896:Treatment Outcome; D014716:Vertical Dimension; D055815:Young Adult
chemical_list: D015921:Dental Implants; D020724:Elastomers