The Korean Journal of Orthodontics  2017;47(4):268-274

doi:10.4041/kjod.2017.47.4.268

Maxillary molar derotation and distalization by using a nickel-titanium wire fabricated on a setup model.

Jong Moon JUNG 1 ; Young Joo WI ; Hyun Mo KOO ; Min Ji KIM ; Youn Sic CHUN

Affiliations

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Keywords

Molar derotation; Appliance; Bracket; Tooth movement

Country

Republic of Korea

Language

English

Abstract

The purpose of this article is to introduce a simple appliance that uses a setup model and a nickel-titanium (Ni-Ti) wire for correcting the mesial rotation and drift of the permanent maxillary first molar. The technique involves bonding a Ni-Ti wire to the proper position of the target tooth on a setup model, followed by the fabrication of the transfer cap for indirect bonding and its transfer to the patient's teeth. This appliance causes less discomfort and provides better oral hygiene for the patients than do conventional appliances such as the bracket, pendulum, and distal jet. The treatment time is also shorter with the new appliance than with full-fixed appliances. Moreover, the applicability of the new appliance can be expanded to many cases by using screws or splinting with adjacent teeth to improve anchorage.