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Intra-arch occlusal indicators of crowding in the permanent dentition.
Am J Orthod Dentofacial Orthop. 2005 Aug; 128(2):220-5.AJ

Abstract

INTRODUCTION

The objective of this study was to identify the intra-arch occlusal characteristics that best discriminated 3 groups with different grades of dental arch discrepancies. This cross-sectional analysis was conducted in Lima, Peru, in 2003.

METHODS

Intra-arch measurements were made on 150 sets of dental casts of high school students (aged 12-16; 75 boys, 75 girls). Stepwise multiple discriminant analysis (SMDA) was used to obtain a better understanding of the morphological relationships between tooth and dental-arch variables and their relationship with crowding.

RESULTS

Mesiodistal tooth sizes and crown proportions of some teeth differed among significantly crowded, mild-to-moderately crowded, and spaced dental arches. Buccolingual tooth sizes were similar in the 3 groups. Of the arch dimensions evaluated, only intermolar arch width and arch length differed between the groups. An SMDA was developed to classify dental-arch discrepancies in the permanent dentition based on several intra-arch occlusal characteristics. The variable with the highest discriminatory capability between groups was arch length. When arch length was taken out of the SMDA, the explanatory capability from the variability on the dental arch discrepancies diminished from 51% to 14%. When the remaining arch dimension variable (intermolar width) was taken out, the explanatory capability diminished more (from 14% to 8%).

CONCLUSIONS

Although other tooth-size and arch dimensions are indicators of crowding, arch length is the most important factor.

Authors+Show Affiliations

Department of Social Dentistry, Universidad Peruana Cayetano Heredia, Lima, Peru.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16102408

Citation

Bernabé, Eduardo, et al. "Intra-arch Occlusal Indicators of Crowding in the Permanent Dentition." 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. 128, no. 2, 2005, pp. 220-5.
Bernabé E, del Castillo CE, Flores-Mir C. Intra-arch occlusal indicators of crowding in the permanent dentition. Am J Orthod Dentofacial Orthop. 2005;128(2):220-5.
Bernabé, E., del Castillo, C. E., & Flores-Mir, C. (2005). Intra-arch occlusal indicators of crowding in the permanent dentition. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 128(2), 220-5.
Bernabé E, del Castillo CE, Flores-Mir C. Intra-arch Occlusal Indicators of Crowding in the Permanent Dentition. Am J Orthod Dentofacial Orthop. 2005;128(2):220-5. PubMed PMID: 16102408.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intra-arch occlusal indicators of crowding in the permanent dentition. AU - Bernabé,Eduardo, AU - del Castillo,César Eduardo, AU - Flores-Mir,Carlos, PY - 2004/02/04/received PY - 2004/04/05/revised PY - 2004/04/05/accepted PY - 2005/8/17/pubmed PY - 2005/9/15/medline PY - 2005/8/17/entrez SP - 220 EP - 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 - 128 IS - 2 N2 - INTRODUCTION: The objective of this study was to identify the intra-arch occlusal characteristics that best discriminated 3 groups with different grades of dental arch discrepancies. This cross-sectional analysis was conducted in Lima, Peru, in 2003. METHODS: Intra-arch measurements were made on 150 sets of dental casts of high school students (aged 12-16; 75 boys, 75 girls). Stepwise multiple discriminant analysis (SMDA) was used to obtain a better understanding of the morphological relationships between tooth and dental-arch variables and their relationship with crowding. RESULTS: Mesiodistal tooth sizes and crown proportions of some teeth differed among significantly crowded, mild-to-moderately crowded, and spaced dental arches. Buccolingual tooth sizes were similar in the 3 groups. Of the arch dimensions evaluated, only intermolar arch width and arch length differed between the groups. An SMDA was developed to classify dental-arch discrepancies in the permanent dentition based on several intra-arch occlusal characteristics. The variable with the highest discriminatory capability between groups was arch length. When arch length was taken out of the SMDA, the explanatory capability from the variability on the dental arch discrepancies diminished from 51% to 14%. When the remaining arch dimension variable (intermolar width) was taken out, the explanatory capability diminished more (from 14% to 8%). CONCLUSIONS: Although other tooth-size and arch dimensions are indicators of crowding, arch length is the most important factor. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/16102408/Intra_arch_occlusal_indicators_of_crowding_in_the_permanent_dentition_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(05)00361-6 DB - PRIME DP - Unbound Medicine ER -