Treatment of developing Class II Division 1 malocclusion with Jumper Twin Block.

Unlabelled: The objective of this study was to determine dental and skeletal effects of the jumper twin block appliance in the treatment of developing Class II, Division I malocclusion.

Methods: 15 girls aged 9 to 11 years old with class II division 1 and samephysical maturation status were included in the study over one year. Cephalometric data and study models were analyzed statistically with Paired t-test.