title: Success rate of miniplate anchorage for bone anchored maxillary protraction.
abstract: OBJECTIVE
  To evaluate the success rate of Bollard miniplate anchorage for bone anchored maxillary protraction (BAMP).
  
  
  METHODS
  Twenty-five consecutive patients (mean age, 12.0 ± 1.2 years; range, 8.7-14.8 years) with maxillary hypoplasia without congenital or acquired deformation were included in this study. A total of 100 Bollard modified miniplates were placed by the same surgeon. Ninety-nine miniplates were inserted under general anesthesia, and one was placed under local anesthesia because of initially soft bone conditions. Loading of the miniplates with 150 g elastics was initiated at 17.5 ± 6.9 days (range, 11-38 days) after surgery. Mean follow-up was provided at 20.8 ± 11.1 months (range, 6.5-46.2 months).
  
  
  RESULTS
  The overall success rate of miniplate anchorage in terms of stability was 97%. During orthodontic loading, five miniplates showed signs of mobility. After interruption of loading over 2 months, two miniplates became stable again. However, a total of three miniplates needed to be removed and were successfully replaced under local anesthesia after a mean healing period of 3 months.
  
  
  CONCLUSIONS
  Skeletal anchorage by means of Bollard modified miniplates is effective for BAMP. Success depends on proper presurgical patient counseling, minimal invasive surgery, good postsurgical instructions, and orthodontic follow-up.
authors: Katholieke Universiteit Leuven, Belgium.
authors: Eline E B
authors: EE
authors: De Clerck
authors: Gwen R J
authors: GR
authors: Swennen
mesh_terms: D000293:Adolescent; D001860:Bone Plates; D001863:Bone Screws; D002648:Child; D003758:Dental Implantation, Endosseous / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008313:Malocclusion, Angle Class III / Q000628:therapy*; D008334:Mandible / Q000473:pathology / Q000601:surgery; D008437:Maxilla / Q000473:pathology / Q000601:surgery; D019060:Minimally Invasive Surgical Procedures; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D009971:Orthodontics, Corrective / Q000295:instrumentation*; D010347:Patient Care Planning; D011182:Postoperative Care; D011446:Prospective Studies; D063173:Retrognathia / Q000628:therapy*