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Effects of maxillary protraction with or without expansion on the sagittal pharyngeal dimensions in Class III subjects.
Am J Orthod Dentofacial Orthop. 2009 Jun; 135(6):777-81.AJ

Abstract

INTRODUCTION

The aim of this cephalometric study was to analyze the effects of rapid maxillary expansion (RME) and facemask (FM), or FM combined with bite block (BB), on the sagittal pharyngeal dimensions in subjects with Class III malocclusion when compared with an untreated Class III control group.

METHODS

Thirty-nine subjects (22 girls, 17 boys) were divided into 2 groups: the FM/BB group (22 subjects; mean ages, 8.9 years +/- 1.5 before treatment and 10.5 years +/- 1.3 after treatment) and the RME/FM group (17 subjects; mean ages, 7.1 years +/- 1.8 before treatment and 9.2 years +/- 1.8 after treatment). The treated groups were compared with an untreated Class III control group of 20 subjects (mean ages, 8.1 years +/- 1.2 at the first observation and 10 years +/- 1.7 at the second observation). All subjects were at prepubertal stage of skeletal maturity at both times. Comparisons of these changes between the 3 groups were analyzed with the Kruskal-Wallis 1-way analysis of variance (ANOVA) on ranks with post-hoc tests.

RESULTS

The favorable skeletal maxillary and mandibular changes produced by maxillary protraction with or without RME were not associated with significant changes in the sagittal oropharygeal and nasopharyngeal airway dimensions.

CONCLUSIONS

Orthopedic treatment of Class III malocclusion does not produce a significant increase in airway dimensions in the short term.

Authors+Show Affiliations

Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

19524838

Citation

Mucedero, Manuela, et al. "Effects of Maxillary Protraction With or Without Expansion On the Sagittal Pharyngeal Dimensions in Class III Subjects." 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. 135, no. 6, 2009, pp. 777-81.
Mucedero M, Baccetti T, Franchi L, et al. Effects of maxillary protraction with or without expansion on the sagittal pharyngeal dimensions in Class III subjects. Am J Orthod Dentofacial Orthop. 2009;135(6):777-81.
Mucedero, M., Baccetti, T., Franchi, L., & Cozza, P. (2009). Effects of maxillary protraction with or without expansion on the sagittal pharyngeal dimensions in Class III subjects. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 135(6), 777-81. https://doi.org/10.1016/j.ajodo.2008.11.021
Mucedero M, et al. Effects of Maxillary Protraction With or Without Expansion On the Sagittal Pharyngeal Dimensions in Class III Subjects. Am J Orthod Dentofacial Orthop. 2009;135(6):777-81. PubMed PMID: 19524838.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of maxillary protraction with or without expansion on the sagittal pharyngeal dimensions in Class III subjects. AU - Mucedero,Manuela, AU - Baccetti,Tiziano, AU - Franchi,Lorenzo, AU - Cozza,Paola, PY - 2008/09/15/received PY - 2008/11/20/revised PY - 2008/11/20/accepted PY - 2009/6/16/entrez PY - 2009/6/16/pubmed PY - 2009/7/23/medline SP - 777 EP - 81 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 - 135 IS - 6 N2 - INTRODUCTION: The aim of this cephalometric study was to analyze the effects of rapid maxillary expansion (RME) and facemask (FM), or FM combined with bite block (BB), on the sagittal pharyngeal dimensions in subjects with Class III malocclusion when compared with an untreated Class III control group. METHODS: Thirty-nine subjects (22 girls, 17 boys) were divided into 2 groups: the FM/BB group (22 subjects; mean ages, 8.9 years +/- 1.5 before treatment and 10.5 years +/- 1.3 after treatment) and the RME/FM group (17 subjects; mean ages, 7.1 years +/- 1.8 before treatment and 9.2 years +/- 1.8 after treatment). The treated groups were compared with an untreated Class III control group of 20 subjects (mean ages, 8.1 years +/- 1.2 at the first observation and 10 years +/- 1.7 at the second observation). All subjects were at prepubertal stage of skeletal maturity at both times. Comparisons of these changes between the 3 groups were analyzed with the Kruskal-Wallis 1-way analysis of variance (ANOVA) on ranks with post-hoc tests. RESULTS: The favorable skeletal maxillary and mandibular changes produced by maxillary protraction with or without RME were not associated with significant changes in the sagittal oropharygeal and nasopharyngeal airway dimensions. CONCLUSIONS: Orthopedic treatment of Class III malocclusion does not produce a significant increase in airway dimensions in the short term. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/19524838/Effects_of_maxillary_protraction_with_or_without_expansion_on_the_sagittal_pharyngeal_dimensions_in_Class_III_subjects_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(09)00266-2 DB - PRIME DP - Unbound Medicine ER -