A clinical study of FR II appliance in early treatment of Class Ⅱ malocclusion
FENG Cui-juan
TIAN Yu-lou
JIN Jie
ZHAO Zhen-jin
HOU Zhi-ming
ZHANG Yang
Abstract：Objective To investigate the clinical effect of function regulatorⅡ(FRⅡ)appliances in the treatment of skeletal ClassⅡ1 malocclusion. Methods Totally 26 child patients with skeletal ClassⅡ1 malocclusion were treated with FRⅡappliances. Cephalometric radiographs were taken and analyzed at pre-treatment and post-treatment. Paired T-test was used to determine if there were significant differences by SPSS 13.0. Results After a treatment by FRⅡ,the growth of the mandible was stimulated. Overbite,overjet,ANB(°)and lip protrusion decreased significantly(P<0.05), while SNB(°)and L1-MP(°)increased significantly(P<0.05). Conclusion FRⅡappliances is fit for the early orth-odontic treatment of skeletal ClassⅡ1 malocclusion. A harmonious relationship between upper and lower jaws and a bet-ter profile can be obtained.
Keywords：function regulatorⅡ(FRⅡ)appliancesangle ClassⅡ malocclusionlateral cephalography
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 668-671 )