Effects of Farmand and Fränkel-2 functional appliances on mandibular deficiency in late mixed dentition

Abstract

Cite this article:Pakshir HR, Jamilian A, Mokhtar A, Darnahal A, Kamali Z, Nucci L, Perillo L. Effects of Farmand and Fränkel-2 functional appliances on mandibular deficiency in late mixed dentition. Stoma Edu J. 2017;4(3):176-181.Introduction: The present study aimed to evaluate the cephalometric changes in Class II Division I mandibular deficient patients treated with the Fränkel 2 and Farmand appliances as a new functional appliance. Methodology: Fifty-five subjects treated for Class II Division I malocclusion and mandibular deficiency were selected for the study. Twenty-seven of the subjects (17 girls, 10 boys) with the mean age of 11.1 (SD 1.4) years were treated with the Farmand appliance and twenty-eight of them (15 girls, 13 boys) with the mean age of 11 (SD 1.5) years were treated with the FR-2 appliance. T-test, paired t-test, Wilcoxon and Mann-Whitney test were used to evaluate the data. Results: A skeletal Class I relationship and a marked reduction in overjet were achieved in both treatment groups. ANB decreased significantly by 3.2 (SD 1.7) degrees in the Farmand appliance group and it decreased significantly by 3.5 (SD 1.6) degrees in the Fränkel group. Conclusion: Both Farmand and Fränkel appliances were successful in the correction of mandibular deficiency in Class II Division 1 patients.