Treatment of class II protrusion with severe crowding using indirect miniscrew anchorage

Nak Chun Choi, Young Chel Park, Han Ah Lee, Kee Joon Lee

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1109-1118
Number of pages10
JournalAngle Orthodontist
Issue number6
Publication statusPublished - 2007 Nov

All Science Journal Classification (ASJC) codes

  • Orthodontics


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