Year : 2019

Volume : Volume 10

Issue : Issue 1s

Address for correspondence :
Dr. Sameer Phatak.
sameerphtk@gmail.com

Abstract

Background:  To evaluate and compare the effect of Fixed Functional Appliance (Forsus FRD) and Removable Functional Appliance (Twin Block) on lower incisor proclination. Materials & Methods: 12 Class II patients (7 boys, 5 girls. Mean age 15.75±1.8 years) treated with Forsus FRD (FFRD) were compared with 12 Class II patients (7 boys, 5 girls. Mean age 13±1.2 years) treated with Twin Block Appliance (TB). Cephalometric values of lower incisor inclination pretreatment (T1) and post-treatment (T2) were recorded & compared in each group with Paired t-tests & between the two groups with Independent sample t-tests Results: In the FFRD group, the difference in T1 and T2 values was found to be statistically significant (Mean Difference - FFRD: L1-MP=-8.62°, L1-GoMe=-9.04°, L1-GoGn=-9°). In the TB group, the difference in T1 and T2 values was found to be statistically significant (Mean Difference - TB: L1-MP=-2.41°, L1-GoMe=-2.83°, L1-GoGn=3.16°). In Inter-group comparisons, the FFRD group produced a significantly greater amount of lower incisor proclination with respect to the TB group (Mean difference - L1-MP=6.2°, L1-GoMe=6.2°, L1-GoGn=5.8°). Conclusion: The Forsus FRD and the Twin Block appliance, both showed an increase in lower incisor proclination but it was significantly greater for the Forsus FRD group.

Keywords: Forsus Fatigue Resistant Device, Twin Block, Lower incisor proclination.