Treatment of a Class II deepbite with microimplant anchorage.

Abstract

The goal of this report was to illustrate new treatment mechanics for using microimplants for the treatment of a Class II Division 2 deepbite malocclusion. A 29-year-old woman with a deepbite was treated with the aid of microimplant anchorage. Microimplants placed between the maxillary second premolars and first molars were used as anchorage to apply a distal force to the anterior teeth to correct the Class II canine and molar relationships. A distal force was applied to long hooks that were crimped between the lateral incisors and the canines. By applying a backward force to the long hooks, the maxillary anterior teeth experienced palatal root movement with no change in the vertical and anteroposterior positions of the incisal edges. The distal extrusive movement of the maxillary second molars achieved by disengaging the second molars from the archwire during distal force application and an anterior bite-block bonded on the lingual surface of the maxillary central incisors produced the increase in vertical dimension. The distal force to the long extended hooks from the microimplants was possibly good mechanics for obtaining the palatal root movement and correcting the Class II canine and molar relationships. The anterior bite-block and disengagement of the maxillary second molars during distal force application were effective for increasing the vertical dimension.

• Authors: Hyo-Sang Park, Ji-Yeun Kim, Tae-Geon Kwon
• Journal: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics (Am J Orthod Dentofacial Orthop) Vol. 139 Issue 3 Pg. 397-406 (Mar 2011) ISSN: 1097-6752 [Electronic] United States
• PMID: 21392696 (Publication Type: Case Reports, Journal Article)
• Copyright: Copyright © 2011 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.

Chemical References

• Dental Implants

Topics

• Adult
• Bicuspid (pathology)
• Biomechanical Phenomena
• Cuspid (pathology)
• Dental Implants
• Female
• Humans
• Incisor (abnormalities, pathology)
• Malocclusion, Angle Class II (therapy)
• Maxilla (surgery)
• Molar (pathology)
• Orthodontic Anchorage Procedures (instrumentation)
• Orthodontic Appliance Design
• Orthodontic Appliances, Functional
• Orthodontic Wires
• Patient Care Planning
• Tooth Movement Techniques (instrumentation)
• Tooth Root (pathology)
• Treatment Outcome
• Vertical Dimension