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Maxillary arch width and buccal corridor changes with orthodontic treatment. Part 1: differences between premolar extraction and nonextraction treatment outcomes.
Am J Orthod Dentofacial Orthop. 2014 Feb; 145(2):207-16.AJ

Abstract

INTRODUCTION

In this retrospective study, we examined and compared the pretreatment and posttreatment arch widths and buccal corridor changes in subjects who had received orthodontic treatment either with or without premolar extractions.

METHODS

Pretreatment and posttreatment casts, frontal smiling photographs, and lateral cephalograms of 30 extraction and 27 nonextraction patients were analyzed to determine any significant differences in arch widths, buccopalatal inclinations of the teeth, and buccal corridor widths and areas, both within and between the 2 groups. Relationships between buccal corridor measurements and corresponding arch widths and buccopalatal inclinations of the teeth were also examined.

RESULTS

There was a significant increase in the posttreatment maxillary intercanine width in the extraction group but not in the nonextraction group. Both the pretreatment and posttreatment arch widths between the maxillary first molars and at the level of the posterior rugae were greater in the nonextraction group than in the extraction group. There were no significant differences in any buccal corridor widths or areas measured between the extraction and nonextraction subjects.

CONCLUSIONS

Because they reflect different morphologies, there are likely to be significant differences in average maxillary anterior and posterior posttreatment arch widths in those treated with or without extractions. However, these arch width differences are not likely to be discernible in extraction and nonextraction patients as differences in the buccal corridor widths and areas.

Authors+Show Affiliations

Private practice, Melbourne, Victoria, Australia.Professor, Royal Melbourne Hospital, Melbourne, Victoria, Australia. Electronic address: mgwoods@iprimus.com.au.Professor and Elsdon Storey Chair of Child Dental Health, Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

24485736

Citation

Meyer, Anna H., et al. "Maxillary Arch Width and Buccal Corridor Changes With Orthodontic Treatment. Part 1: Differences Between Premolar Extraction and Nonextraction Treatment Outcomes." 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. 145, no. 2, 2014, pp. 207-16.
Meyer AH, Woods MG, Manton DJ. Maxillary arch width and buccal corridor changes with orthodontic treatment. Part 1: differences between premolar extraction and nonextraction treatment outcomes. Am J Orthod Dentofacial Orthop. 2014;145(2):207-16.
Meyer, A. H., Woods, M. G., & Manton, D. J. (2014). Maxillary arch width and buccal corridor changes with orthodontic treatment. Part 1: differences between premolar extraction and nonextraction treatment outcomes. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 145(2), 207-16. https://doi.org/10.1016/j.ajodo.2013.10.017
Meyer AH, Woods MG, Manton DJ. Maxillary Arch Width and Buccal Corridor Changes With Orthodontic Treatment. Part 1: Differences Between Premolar Extraction and Nonextraction Treatment Outcomes. Am J Orthod Dentofacial Orthop. 2014;145(2):207-16. PubMed PMID: 24485736.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Maxillary arch width and buccal corridor changes with orthodontic treatment. Part 1: differences between premolar extraction and nonextraction treatment outcomes. AU - Meyer,Anna H, AU - Woods,Michael G, AU - Manton,David J, PY - 2013/05/01/received PY - 2013/10/01/revised PY - 2013/10/01/accepted PY - 2014/2/4/entrez PY - 2014/2/4/pubmed PY - 2014/4/9/medline SP - 207 EP - 16 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 - 145 IS - 2 N2 - INTRODUCTION: In this retrospective study, we examined and compared the pretreatment and posttreatment arch widths and buccal corridor changes in subjects who had received orthodontic treatment either with or without premolar extractions. METHODS: Pretreatment and posttreatment casts, frontal smiling photographs, and lateral cephalograms of 30 extraction and 27 nonextraction patients were analyzed to determine any significant differences in arch widths, buccopalatal inclinations of the teeth, and buccal corridor widths and areas, both within and between the 2 groups. Relationships between buccal corridor measurements and corresponding arch widths and buccopalatal inclinations of the teeth were also examined. RESULTS: There was a significant increase in the posttreatment maxillary intercanine width in the extraction group but not in the nonextraction group. Both the pretreatment and posttreatment arch widths between the maxillary first molars and at the level of the posterior rugae were greater in the nonextraction group than in the extraction group. There were no significant differences in any buccal corridor widths or areas measured between the extraction and nonextraction subjects. CONCLUSIONS: Because they reflect different morphologies, there are likely to be significant differences in average maxillary anterior and posterior posttreatment arch widths in those treated with or without extractions. However, these arch width differences are not likely to be discernible in extraction and nonextraction patients as differences in the buccal corridor widths and areas. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/24485736/Maxillary_arch_width_and_buccal_corridor_changes_with_orthodontic_treatment__Part_1:_differences_between_premolar_extraction_and_nonextraction_treatment_outcomes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(13)00966-9 DB - PRIME DP - Unbound Medicine ER -