Original Research Article
ISW for the treatment of moderate crowding dentition with unilateral second molar impaction
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*Corresponding Author Email: kenkoyu(at)hotmail.com
Chun-Shuo Huang1,2 |
Chien-Chih Yu3* |
Jian-Hong Yu1 |
Article Number: irjpeh.18.013 | Pages: 90-103 | Vol.5 (6), September 2018 | DOI: https://doi.org/10.15739/irjpeh.18.013
Received: July 6, 2018 Accepted: August 31, 2018 Published: September 15, 2018
Abstract
The objective of the treatment is for an adult with moderate crowding dentition and unilateral second molar impaction by ISW (Improved Super-elastic Ti-Ni alloy Wire, developed by Tokyo Medical and Dental University) will be discussed. An adult male (21y11m) came to our clinic with a chief complaint of maxillary protrusion, irregular dentition and midline deviation. Clinical examination revealed a moderate crowding with #25, #35 linguoversion and #37 impaction. With ISW leveling, crimpable stopper and open coil spring, we uprighted the lower left second molar. After that, toe-in and lingual torque was added to adjust #37 position. The protruded profile was improved by canine distal drive and anterior retraction. Treatment was completed within 33 months and a desirable occlusion with adequate overbite and overjet was achieved.
Keywords: ISW, bimaxillary protrusion, skeletal Class II, linguoversion, molar uprighting, distalization, crown lingual torque, toe-in bend, intermaxillary elastic.
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