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Treatment of Class II protrusion with severe crowding using indirect miniscrew anchorage.

Authors
  • Choi, Nak-Chun1
  • Park, Young-Chel
  • Lee, Han-Ah
  • Lee, Kee-Joon
  • 1 Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, South Korea. , (North Korea)
Type
Published Article
Journal
The Angle orthodontist
Publication Date
Nov 01, 2007
Volume
77
Issue
6
Pages
1109–1118
Identifiers
PMID: 18004931
Source
Medline
License
Unknown

Abstract

This report describes the nonsurgical treatment of a patient with skeletal Class II protrusion and severe crowding. A 20-year-old woman presented with the chief complaint of lip protrusion and crowding. To correct the Class II relationship, severe crowding, and lip protrusion, distal movement of the maxillary first molars using indirect miniscrew anchorage and nickel-titanium coil springs, along with extraction of the first premolars and maxillary second molars, was planned. After the distal molar movement phase was complete, the maxillary first molars had moved 8.0 mm to the distal, and the first premolars, which were splinted to the miniscrews, had moved 0.5 mm to the mesial. The results show that the distal molar movement mechanics were efficient and stable. After treatment, all of the patient's chief complaints were relieved and an esthetic facial profile was obtained.

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