Skeletal Class III cases are accepted to be among the hardest cases that need to he tre-ated. Since growth development effects the treatment unfavorably, one must decide whether the treatment of Class III cases are succesfull or not, at the end of the growth period. In this study, 4 cases who and skeletal Class III with maksillary retrusion were treated with orthopedic face mask and the results obtained after four years later are presented.

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