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Korean J Orthod. 2012 Oct;42(5):270-8. doi: 10.4041/kjod.2012.42.5.270. Epub 2012 Oct 29.

Correction of dental Class III with posterior open bite by simple biomechanics using an anterior C-tube miniplate.

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Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, Korea.


In the correction of dental Class III molar relationship in skeletal Class II patients, uprighting of the mandibular posterior segments without opening the mandible is an important treatment objective. In the case reported herein, a C-tube miniplate fixed to the lower labial symphysis and connected with a nickel-titanium reverse-curved archwire provided effective uprighting of the lower molars, without the need of orthodontic appliances on the mandibular anteriors. Using this approach, an appropriate magnitude of force is exerted on the molars while avoiding any negative effect on the mandibular anteriors.


Anchorage; Class III diagnosis; Miniplate; Relapse

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