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Long-term effectiveness and treatment timing for Bionator therapy.
Angle Orthod. 2003 Jun; 73(3):221-30.AO

Abstract

The aim of the present investigation was to provide information about the long-term effects and optimal timing for class-II treatment with the Bionator appliance. Lateral cephalograms of 23 class-II patients treated with the Bionator were analyzed at three time periods: T1, start of treatment; T2, end of Bionator therapy; and T3, long-term observation (after completion of growth). T3 includes a phase with fixed appliances. The treated sample was divided into two groups according to their skeletal maturity as evaluated by the cervical vertebral maturation (CVM) method. The early-treated group (13 subjects) initiated treatment before the peak in mandibular growth, which occurred after completion of Bionator therapy. The late-treated group (10 subjects) received Bionator treatment during the peak. The T1-T2, T2-T3, and T1-T3 changes in the treated groups were compared with changes in control groups of untreated class-II subjects by nonparametric statistics (P < .05). The findings of the present study on Bionator therapy followed by fixed appliances indicate that this treatment protocol is more effective and stable when it is performed during the pubertal growth spurt. Optimal timing to start treatment with the Bionator is when a concavity appears at the lower borders of the second and the third cervical vertebrae (CVMS II). In the long-term, the amount of significant supplementary elongation of the mandible in subjects treated during the pubertal peak is 5.1 mm more than in the controls, and it is associated with a backward direction of condylar growth. Significant increments in mandibular ramus height also were recorded.

Authors+Show Affiliations

Department of Orthodontics, School of Dentistry, University Paulista, São Paulo, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

12828429

Citation

Faltin, Kurt Júnior, et al. "Long-term Effectiveness and Treatment Timing for Bionator Therapy." The Angle Orthodontist, vol. 73, no. 3, 2003, pp. 221-30.
Faltin KJ, Faltin RM, Baccetti T, et al. Long-term effectiveness and treatment timing for Bionator therapy. Angle Orthod. 2003;73(3):221-30.
Faltin, K. J., Faltin, R. M., Baccetti, T., Franchi, L., Ghiozzi, B., & McNamara, J. A. (2003). Long-term effectiveness and treatment timing for Bionator therapy. The Angle Orthodontist, 73(3), 221-30.
Faltin KJ, et al. Long-term Effectiveness and Treatment Timing for Bionator Therapy. Angle Orthod. 2003;73(3):221-30. PubMed PMID: 12828429.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Long-term effectiveness and treatment timing for Bionator therapy. AU - Faltin,Kurt Júnior, AU - Faltin,Rolf M, AU - Baccetti,Tiziano, AU - Franchi,Lorenzo, AU - Ghiozzi,Bruno, AU - McNamara,James A,Jr PY - 2003/6/28/pubmed PY - 2003/9/6/medline PY - 2003/6/28/entrez SP - 221 EP - 30 JF - The Angle orthodontist JO - Angle Orthod VL - 73 IS - 3 N2 - The aim of the present investigation was to provide information about the long-term effects and optimal timing for class-II treatment with the Bionator appliance. Lateral cephalograms of 23 class-II patients treated with the Bionator were analyzed at three time periods: T1, start of treatment; T2, end of Bionator therapy; and T3, long-term observation (after completion of growth). T3 includes a phase with fixed appliances. The treated sample was divided into two groups according to their skeletal maturity as evaluated by the cervical vertebral maturation (CVM) method. The early-treated group (13 subjects) initiated treatment before the peak in mandibular growth, which occurred after completion of Bionator therapy. The late-treated group (10 subjects) received Bionator treatment during the peak. The T1-T2, T2-T3, and T1-T3 changes in the treated groups were compared with changes in control groups of untreated class-II subjects by nonparametric statistics (P < .05). The findings of the present study on Bionator therapy followed by fixed appliances indicate that this treatment protocol is more effective and stable when it is performed during the pubertal growth spurt. Optimal timing to start treatment with the Bionator is when a concavity appears at the lower borders of the second and the third cervical vertebrae (CVMS II). In the long-term, the amount of significant supplementary elongation of the mandible in subjects treated during the pubertal peak is 5.1 mm more than in the controls, and it is associated with a backward direction of condylar growth. Significant increments in mandibular ramus height also were recorded. SN - 0003-3219 UR - https://www.unboundmedicine.com/medline/citation/12828429/Long_term_effectiveness_and_treatment_timing_for_Bionator_therapy_ L2 - http://www.angle.org/doi/10.1043/0003-3219(2003)073&lt;0221:LEATTF&gt;2.0.CO;2?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -