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Influence of rapid palatal expansion on maxillary incisor alignment stability.
Am J Orthod Dentofacial Orthop 2010; 137(2):164.e1-6; discussion 164-5AJ

Abstract

INTRODUCTION

The purpose of this retrospective study was to compare the long-term stability of maxillary incisor alignment in patients treated with and without rapid maxillary expansion (RME).

METHODS

The sample comprised 48 subjects with Class I and Class II malocclusions, treated without extractions with fixed edgewise appliances, divided into 2 groups according to the treatment protocol: group 1 comprised 25 patients (15 girls, 10 boys) at a mean initial age of 13.53 years (SD, 1.63), who had RME during orthodontic treatment. Group 2 comprised 23 patients (13 girls, 10 boys) at a mean initial age of 13.36 years (SD, 1.81 years), treated with fixed appliances without RME. Maxillary dental cast measurements were obtained at the pretreatment, posttreatment, and long-term posttreatment stages. Variables assessed were the irregularity index and maxillary arch dimensions. Intergroup comparisons were made with independent t tests.

RESULTS

Greater transverse increases were found during treatment in the group treated with RME. However, during the long-term posttreatment period, no significant difference was observed in the amount of incisor crowding relapse between the groups.

CONCLUSIONS

RME did not influence long-term maxillary anterior alignment stability.

Authors+Show Affiliations

Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil. luizfiliphecanuto@yahoo.com.brNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Controlled Clinical Trial
Journal Article

Language

eng

PubMed ID

20152665

Citation

Canuto, Luiz Filiphe Gonçalves, et al. "Influence of Rapid Palatal Expansion On Maxillary Incisor Alignment Stability." 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. 137, no. 2, 2010, pp. 164.e1-6; discussion 164-5.
Canuto LF, de Freitas MR, Janson G, et al. Influence of rapid palatal expansion on maxillary incisor alignment stability. Am J Orthod Dentofacial Orthop. 2010;137(2):164.e1-6; discussion 164-5.
Canuto, L. F., de Freitas, M. R., Janson, G., de Freitas, K. M., & Martins, P. P. (2010). Influence of rapid palatal expansion on maxillary incisor alignment stability. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 137(2), pp. 164.e1-6; discussion 164-5. doi:10.1016/j.ajodo.2009.06.017.
Canuto LF, et al. Influence of Rapid Palatal Expansion On Maxillary Incisor Alignment Stability. Am J Orthod Dentofacial Orthop. 2010;137(2):164.e1-6; discussion 164-5. PubMed PMID: 20152665.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of rapid palatal expansion on maxillary incisor alignment stability. AU - Canuto,Luiz Filiphe Gonçalves, AU - de Freitas,Marcos Roberto, AU - Janson,Guilherme, AU - de Freitas,Karina Maria Salvatore, AU - Martins,Patrícia Paschoal, PY - 2009/04/01/received PY - 2009/06/01/revised PY - 2009/06/01/accepted PY - 2010/2/16/entrez PY - 2010/2/16/pubmed PY - 2010/3/18/medline SP - 164.e1-6; discussion 164-5 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 - 137 IS - 2 N2 - INTRODUCTION: The purpose of this retrospective study was to compare the long-term stability of maxillary incisor alignment in patients treated with and without rapid maxillary expansion (RME). METHODS: The sample comprised 48 subjects with Class I and Class II malocclusions, treated without extractions with fixed edgewise appliances, divided into 2 groups according to the treatment protocol: group 1 comprised 25 patients (15 girls, 10 boys) at a mean initial age of 13.53 years (SD, 1.63), who had RME during orthodontic treatment. Group 2 comprised 23 patients (13 girls, 10 boys) at a mean initial age of 13.36 years (SD, 1.81 years), treated with fixed appliances without RME. Maxillary dental cast measurements were obtained at the pretreatment, posttreatment, and long-term posttreatment stages. Variables assessed were the irregularity index and maxillary arch dimensions. Intergroup comparisons were made with independent t tests. RESULTS: Greater transverse increases were found during treatment in the group treated with RME. However, during the long-term posttreatment period, no significant difference was observed in the amount of incisor crowding relapse between the groups. CONCLUSIONS: RME did not influence long-term maxillary anterior alignment stability. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/20152665/Influence_of_rapid_palatal_expansion_on_maxillary_incisor_alignment_stability_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(09)01064-6 DB - PRIME DP - Unbound Medicine ER -