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[Long term results of skeletal profile changes occurring from chin cap therapy of Japanese female skeletal Class III cases].

[Article in Japanese]

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Department of Orthodontics, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.


This cephalometric study was made to investigate the effects of chin cap therapy. The subjects were 21 Japanese females of skeletal class III who were treated without tooth extraction. The periods before treatment, during improvement of anterior teeth and after treatment were compared to see where and how effective the therapy had been.


1. Characteristics before the treatment period: These cases had backward position of the maxilla and forward position of the mandible with over growth. In the denture pattern there was a remarkable labioaxiversion of U-1. 2. Characteristics after the treatment period: There was improvement in the backward position of the maxilla. In the forward mandible, once these cases improved their position by improving the overjet, there was a regression followed by gradual forward growth as treatment continued. The denture pattern showed labioaxiversion of U-1 as before. 3. Before the treatment period, these cases showed large Go-Po and Ar-Go in the dimensional linear analysis. After treatment, these analysis showed normal sizes.

[Indexed for MEDLINE]

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