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Long-term comparison of treatment outcome and stability of Class II patients treated with functional appliances versus bilateral sagittal split ramus osteotomy.
Am J Orthod Dentofacial Orthop. 2005 Apr; 127(4):451-64; quiz 516-7.AJ

Abstract

PURPOSE

The objective of this study was to compare the treatment outcomes and stability of patients with Class II malocclusion treated with either functional appliances or surgical mandibular advancement.

MATERIAL

The early-treatment group consisted of 30 patients (15 girls, 15 boys), with a mean age of 10 years 4 months (range, 7 years 5 months to 12 years 5 months), who received either Fränkel II (15 patients) or Herbst appliances (15 patients). The surgical group consisted of 30 patients (23 female, 7 male), with a mean age of 27 years 2 months (range, 13 years 0 months to 53 years 10 months). They were treated with bilateral sagittal split ramus osteotomies with rigid fixation. Lateral cephalograms were taken for the early-treatment group at T1 (initial records), T2 (completion of functional appliance treatment), and Tf (completion of comprehensive treatment). In the surgical group, lateral cephalograms were taken at T1 (initial records), T2 (presurgery), T3 (postsurgery), and Tf (completion of comprehensive treatment). The average times from the completion of functional appliance treatment or surgery to the final cephalograms were 35.8 months and 34.9 months, respectively. A mixed-design analysis of variance was used to compare changes within and between groups.

RESULTS

In the functional appliance group, the mandible continued to grow in a favorable direction even after discontinuation of the functional appliance. Both groups had stable results over time. Both groups finished treatment with the same cephalometric measurements. Significant skeletal and soft tissue changes were noted in the treatment groups due to either functional or surgical advancement of the mandible. More vertical relapse was noted in the surgical group than in the functional group.

CONCLUSIONS

This study suggests that early correction of Class II dentoskeletal malocclusions with functional appliances yields favorable results without the possible deleterious effects of surgery.

Authors+Show Affiliations

Department of Orthodontics, School of Dentistry, University of Detroit Mercy, Mich, USA. jberger@mnsi.netNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Controlled Clinical Trial
Journal Article

Language

eng

PubMed ID

15821690

Citation

Berger, Jeffrey L., et al. "Long-term Comparison of Treatment Outcome and Stability of Class II Patients Treated With Functional Appliances Versus Bilateral Sagittal Split Ramus Osteotomy." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 127, no. 4, 2005, pp. 451-64; quiz 516-7.
Berger JL, Pangrazio-Kulbersh V, George C, et al. Long-term comparison of treatment outcome and stability of Class II patients treated with functional appliances versus bilateral sagittal split ramus osteotomy. Am J Orthod Dentofacial Orthop. 2005;127(4):451-64; quiz 516-7.
Berger, J. L., Pangrazio-Kulbersh, V., George, C., & Kaczynski, R. (2005). Long-term comparison of treatment outcome and stability of Class II patients treated with functional appliances versus bilateral sagittal split ramus osteotomy. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 127(4), 451-64; quiz 516-7.
Berger JL, et al. Long-term Comparison of Treatment Outcome and Stability of Class II Patients Treated With Functional Appliances Versus Bilateral Sagittal Split Ramus Osteotomy. Am J Orthod Dentofacial Orthop. 2005;127(4):451-64; quiz 516-7. PubMed PMID: 15821690.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Long-term comparison of treatment outcome and stability of Class II patients treated with functional appliances versus bilateral sagittal split ramus osteotomy. AU - Berger,Jeffrey L, AU - Pangrazio-Kulbersh,Valmy, AU - George,Cameron, AU - Kaczynski,Richard, PY - 2005/4/12/pubmed PY - 2005/5/3/medline PY - 2005/4/12/entrez SP - 451-64; quiz 516-7 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 127 IS - 4 N2 - PURPOSE: The objective of this study was to compare the treatment outcomes and stability of patients with Class II malocclusion treated with either functional appliances or surgical mandibular advancement. MATERIAL: The early-treatment group consisted of 30 patients (15 girls, 15 boys), with a mean age of 10 years 4 months (range, 7 years 5 months to 12 years 5 months), who received either Fränkel II (15 patients) or Herbst appliances (15 patients). The surgical group consisted of 30 patients (23 female, 7 male), with a mean age of 27 years 2 months (range, 13 years 0 months to 53 years 10 months). They were treated with bilateral sagittal split ramus osteotomies with rigid fixation. Lateral cephalograms were taken for the early-treatment group at T1 (initial records), T2 (completion of functional appliance treatment), and Tf (completion of comprehensive treatment). In the surgical group, lateral cephalograms were taken at T1 (initial records), T2 (presurgery), T3 (postsurgery), and Tf (completion of comprehensive treatment). The average times from the completion of functional appliance treatment or surgery to the final cephalograms were 35.8 months and 34.9 months, respectively. A mixed-design analysis of variance was used to compare changes within and between groups. RESULTS: In the functional appliance group, the mandible continued to grow in a favorable direction even after discontinuation of the functional appliance. Both groups had stable results over time. Both groups finished treatment with the same cephalometric measurements. Significant skeletal and soft tissue changes were noted in the treatment groups due to either functional or surgical advancement of the mandible. More vertical relapse was noted in the surgical group than in the functional group. CONCLUSIONS: This study suggests that early correction of Class II dentoskeletal malocclusions with functional appliances yields favorable results without the possible deleterious effects of surgery. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/15821690/Long_term_comparison_of_treatment_outcome_and_stability_of_Class_II_patients_treated_with_functional_appliances_versus_bilateral_sagittal_split_ramus_osteotomy_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889540604011060 DB - PRIME DP - Unbound Medicine ER -