Early functional treatment in Class II division 1 subjects with mandibular retrognathia using Fränkel II appliance. A prospective controlled study.

Abstract

AIM This was to clarify dentoalveolar, skeletal and facial profile modifications induced by Fränkel II functional treatment in Class II division 1 subjects in prepubertal stages CS1-2. MATERIALS AND METHODS Evaluation of 25 caucasian subjects (15 males, 10 females), mean age 8y 11m, in vertebral stages CS1-2. The mean duration of functional treatment was 1y 11m. STUDY DESIGN Prospective controlled study. The sample was evaluated at T0, start of treatment, and T1, end of Fränkel II therapy. Untreated subjects in Class II division 1 were the control group. STATISTICS T-test for paired data was calculated before and after treatment (P< 0.05). RESULTS A statistically significant increase between T0 and T1 was obtained for SNB (p = 0.022), ANB (p <0.001), Mx/Mn differential (p = 0.001), Co-Go-Me (p = 0.014), OJ (p < 0.001), OB (p = 0.042), IMPA (p = 0.021) . OJ (p < 0.001) and OB (p = 0.003) showed a higher significant change in the Fränkel group compared to control group. CONCLUSION The Fränkel II appliance produced, in CS1-2 subiects, significant effects in teeth position, skeletal modifications and soft tissue changes, although the pubertal growth spurt would occur at least two years later.

Cite this paper

@article{SilvestriniBiavati2012EarlyFT, title={Early functional treatment in Class II division 1 subjects with mandibular retrognathia using Fr{\"a}nkel II appliance. A prospective controlled study.}, author={Armando Silvestrini-Biavati and Giuseppina Alberti and Francesca Silvestrini Biavati and Alessio Signori and Attilio Castaldo and Marco Migliorati}, journal={European journal of paediatric dentistry : official journal of European Academy of Paediatric Dentistry}, year={2012}, volume={13 4}, pages={301-6} }