Treatment Effects of R-Appliance and Frnkel-2 in Class II Division 1 Malocclusions

Authors:

  • R. Showkatbakhsh
    Orthognathic Surgery, Department of Orthodontics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • M. I. Castaldo
    Departments of Orthodontics, Second University of Naples, Naples, Italy
  • A. Jamilian
    Department of Orthodontics, Dental Branch, Center of Craniofacial Research, Islamic Azad University, Tehran, Iran
  • G. Padricelli
    Departments of Orthodontics, Second University of Naples, Naples, Italy
  • M. Fahimi Hanzayi
    Department of Orthodontics, Dental Branch, Islamic Azad University, Tehran, Iran
  • S. Cappabianca
    Department of Radiology, Second University of Naples, Naples, Italy
  • L. Perillo
    Department of Orthodontics, S econd University of Naples, Naples, Italy

ABSTRACT


Aim

The purpose of this study was to compare the effects of a differently designed functional appliance (the R-
appliance) with Frnkel-2. STUDY DESIGN: Twenty-seven patients (16 girls and 11 boys) with a mean age of 9.8 (SD 1.6)
years were treated with the R-appliance for 15.4 (SD 0.4) months and twentyseven (15 girls and 12 boys) patients with a mean
age of 9.1 (SD 1.1) years were treated with a Frnkel-2 appliance for 19 (SD 5.6) months. All patients had Class II division 1
malocclusions due to mandibular deficiency and all of them had prepubertal stages of skeletal development. Lateral
cephalograms obtained at the beginning (T1) and at the end (T2) of the study were analysed.

Results

Paired t-tests
showed that SNB significantly increased in both groups. The incisor mandibular plane angle (IMPA) was reduced in the R-
appliance group by 2.2 (SD 4.9) degrees (P<0.03) but increased by 2.2 (SD 2.6) degrees (P<0.001) in the Frnkel-2 group. The SNA in the R-appliance group showed an increase of 0.2 (SD 2) degrees (P<0.6), while it was decreased by 0.4 (SD 0.5) degrees (P<0.6) in the Frnkel-2 group. CONCLUSIONS: Both treatment modalities were successful in moving the mandible forward. However, with the R-appliance, this was achieved without proclination of the lower incisors.

PLUMX METRICS

Publication date:

Mar /2013

Keywords:

class ii division 1, fränkel-2, functional appliance, mandibular deficiency, r-appliance

Issue:

Vol.14 – n.1/2013

Page:

17 – 22

Publisher:

Ariesdue

Cite:


Harvard: R. Showkatbakhsh, M. I. Castaldo, A. Jamilian, G. Padricelli, M. Fahimi Hanzayi, S. Cappabianca, L. Perillo (2013) "Treatment Effects of R-Appliance and Frnkel-2 in Class II Division 1 Malocclusions", European Journal of Paediatric Dentistry, 14(1), pp17-22. doi:
Vancouver: R. Showkatbakhsh, M. I. Castaldo, A. Jamilian, G. Padricelli, M. Fahimi Hanzayi, S. Cappabianca, L. Perillo. Treatment Effects of R-Appliance and Frnkel-2 in Class II Division 1 Malocclusions. European Journal of Paediatric Dentistry [Internet]. 2013Mar.1 [cited 2025May.17];14(1):17-22. Available from: https://www.ejpd.eu/abstract-pubmed/treatment-effectsof-r-applianceand-frnkel-2in-class-ii-division-1malocclusions/
MLA: R. Showkatbakhsh, M. I. Castaldo, A. Jamilian, G. Padricelli, M. Fahimi Hanzayi, S. Cappabianca, L. Perillo Treatment Effects of R-Appliance and Frnkel-2 in Class II Division 1 Malocclusions. European Journal of Paediatric Dentistry. 2013;14(1):17-22

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