IAO Article Library
A Novel Approach in Treatment of Maxillary Deficiency by Reverse Chin Cup
Record ID: 605
ISSN: 1539-1450
Primary Author: Showkatbakhsh, Rahman
Additional Authors: Jamilian, A.
Affiliations: Shahid Beheshti University; Islamic Azad University; Colombia University; Shahid Beheshti Medical Sciences University;
Abstract:
The aim of this study was to evaluate the effectiveness of a newly designed small-sized extraoral appliance on Class IIT malocclusion and maxillary deficiency in growing patients. The case series included 10 patients (4 males, 6 females) with a mean age of 8.9+1.72 years who suffered from maxillary deficiency. All the patients were treated with an extra oral appliance which was named as reverse chin cup. This appliance consisted of a high pull cap, a chin cup with two vertical hooks, a removable appliance on the upper jaw, and two elastics which connected the hooks of the cup to the hooks of the removable appliance. The mean treatment time was 24+9 months. Mean SNA and ANB were significantly increased by 3.1°+1.6° and 3.5°+1.7°, respectively (p<0.001). The level of significance was set at P<0.05. The increase of SNA angle and ANS-PNS distance (p<0.001) and the decrease of nasolabial angle (P<0.004) indicated that the reverse chin cup was effective in moving the maxilla in a forward position. Moreover, the smaller size of this appliance makes it more favorable for patients.
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