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Stability of rapid maxillary expansion and facemask therapy: a long-term controlled study.
Am J Orthod Dentofacial Orthop. 2011 Oct; 140(4):493-500.AJ

Abstract

INTRODUCTION

The aim of this prospective controlled study was to evaluate the long-term effects of rapid maxillary expansion and facemask therapy in Class III subjects.

METHODS

Twenty-two subjects (9 boys, 13 girls; mean age, 9.2 years ± 1.6) with Class III disharmony were treated consecutively with rapid maxillary expansion and facemask therapy followed by fixed appliances. The patients were reevaluated at the end of the 2-phase treatment (mean age, 14.5 years ± 1.9) and then recalled about 8.5 years after the end of rapid maxillary expansion and facemask treatment (mean age, 18.7 years ± 2.1). Two groups of controls with untreated Class III malocclusion were used for statistical comparisons of the short-term and long-term intervals. Statistical comparisons were performed with the Mann-Whitney U test.

RESULTS

In the long term, no significant differences in maxillary changes were recorded, whereas the treatment group showed significantly smaller increases in mandibular protrusion. The sagittal maxillomandibular skeletal variables maintained significant improvements in the treatment group vs the control groups.

CONCLUSIONS

In the long term, rapid maxillary expansion and facemask therapy led to successful outcomes in about 73% of the Class III patients. Favorable skeletal changes were mainly due to significant improvements in the sagittal position of the mandible.

Authors+Show Affiliations

Department of Orthodontics, University of Florence, Florence, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Controlled Clinical Trial
Journal Article

Language

eng

PubMed ID

21967936

Citation

Masucci, Caterina, et al. "Stability of Rapid Maxillary Expansion and Facemask Therapy: a Long-term Controlled Study." 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. 140, no. 4, 2011, pp. 493-500.
Masucci C, Franchi L, Defraia E, et al. Stability of rapid maxillary expansion and facemask therapy: a long-term controlled study. Am J Orthod Dentofacial Orthop. 2011;140(4):493-500.
Masucci, C., Franchi, L., Defraia, E., Mucedero, M., Cozza, P., & Baccetti, T. (2011). Stability of rapid maxillary expansion and facemask therapy: a long-term controlled study. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 140(4), 493-500. https://doi.org/10.1016/j.ajodo.2010.09.031
Masucci C, et al. Stability of Rapid Maxillary Expansion and Facemask Therapy: a Long-term Controlled Study. Am J Orthod Dentofacial Orthop. 2011;140(4):493-500. PubMed PMID: 21967936.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Stability of rapid maxillary expansion and facemask therapy: a long-term controlled study. AU - Masucci,Caterina, AU - Franchi,Lorenzo, AU - Defraia,Efisio, AU - Mucedero,Manuela, AU - Cozza,Paola, AU - Baccetti,Tiziano, PY - 2010/04/01/received PY - 2010/09/01/revised PY - 2010/09/01/accepted PY - 2011/10/5/entrez PY - 2011/10/5/pubmed PY - 2011/12/13/medline SP - 493 EP - 500 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 - 140 IS - 4 N2 - INTRODUCTION: The aim of this prospective controlled study was to evaluate the long-term effects of rapid maxillary expansion and facemask therapy in Class III subjects. METHODS: Twenty-two subjects (9 boys, 13 girls; mean age, 9.2 years ± 1.6) with Class III disharmony were treated consecutively with rapid maxillary expansion and facemask therapy followed by fixed appliances. The patients were reevaluated at the end of the 2-phase treatment (mean age, 14.5 years ± 1.9) and then recalled about 8.5 years after the end of rapid maxillary expansion and facemask treatment (mean age, 18.7 years ± 2.1). Two groups of controls with untreated Class III malocclusion were used for statistical comparisons of the short-term and long-term intervals. Statistical comparisons were performed with the Mann-Whitney U test. RESULTS: In the long term, no significant differences in maxillary changes were recorded, whereas the treatment group showed significantly smaller increases in mandibular protrusion. The sagittal maxillomandibular skeletal variables maintained significant improvements in the treatment group vs the control groups. CONCLUSIONS: In the long term, rapid maxillary expansion and facemask therapy led to successful outcomes in about 73% of the Class III patients. Favorable skeletal changes were mainly due to significant improvements in the sagittal position of the mandible. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/21967936/Stability_of_rapid_maxillary_expansion_and_facemask_therapy:_a_long_term_controlled_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(11)00628-7 DB - PRIME DP - Unbound Medicine ER -