Özet:

Objective: The aim of this study was to investigate skeletal, dental and soft tissue effects of Forsus Fatigue Resistant Device (FRD) and Jasper Jumper appliances in correction of Class II malocclusion. Methods: 33 patients were divided into two groups as treated with Forsus FRD appliance (18 subjects: 8 females, 10 males-mean age: 15.79 ± 1.50 years) and treated with Jasper Jumper appliance (15 subjects: 9 females, 6 males-mean age: 16.12 ± 1.58 years), randomly. Initial and final lateral cephalometric radiographies were traced and analyzed digitally. The data were analyzed statistically. Results: In the assessment of the skeletal parameters, both two groups had similar outcomes and there were no statistically significant differences (p>0.05). In both groups ANB, Convexity angles and Wits values decreased and maxillomandibular discrepancy improved on sagittal plan. Maxillary incisors were proclined in Forsus FRD group, and maxillary incisors were retroclined in Jasper Jumper treated group and there was a statistically significant difference between groups (p<0.05). In the assessment of mandibular incisor, proclination occurred in both two groups. In the soft tissue evaluation, facial profile was improved through upper lip retrusion and lower lip protrusion and there were no statistically significant differences between groups in these values (p>0.05). Conclusion: The skeletal and soft tissue effects of the Forsus FRD and Jasper Jumper appliances were similar while there were some differences in dental effects. Some factors such as skeletal age, cephalometric values should be taken into consideration when making a choice about the fixed functional appliance.

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