ANALISIS PENGGUNAAN TWIN BLOCK PADA PERAWATAN MALOKLUSI DENTOSKELETAL KELAS II DIVISI 1 DISERTAI RETROGNATI MANDIBULA BERDASARKAN CERVICAL VERTEBRAL MATURATION STAGE

Background:Class II division 1 dentoskeletal malocclusion with mandibularretrognatic can be treated with twin block appliance. The objectives of this studyare to analyse twin block appliance based on mandibular dimension and anteriorfacial height changes, and to determined the most effective time base on CVMSto begin the treatment.Method: The type of research was a retrospective analysis study usingsecondary data. The sample was 14 lateral cephalometric radiographs beforeand after treatment with twin block appliance. It was taken in IKGA RSGM FKGUNPAD 2010 to 2016. Statistic analysis used paired t-test.Results: Study shows that there is a significant change (p