Tags

Type your tag names separated by a space and hit enter

Dental arch dimensions in the mixed dentition: a study of Italian children born in the 1950s and the 1990s.
Angle Orthod. 2006 May; 76(3):446-51.AO

Abstract

The objective of this study was to compare the dental arch dimensions in the mixed dentition in two modern samples living in the same geographic area and separated by almost 35 years. A group of 83 subjects (39 boys and 44 girls) born between 1953 and 1959 (mean age: eight years and three months +/-15 months for the boys and seven years and 11 months +/-12 months for the girls) were compared with a group of 84 subjects (38 boys and 46 girls) born between 1990 and 1998 (mean age: eight years and eight months +/-12 months for the boys and eight years and four months +/-11 months for the girls). Measurements were taken on dental casts for posterior and anterior arch segments, intermolar and intercanine width, and mesiodistal size of incisors. The available anterior space in both arches and the posterior and anterior transverse dimensions were calculated. Groups were compared using a nonparametric test (Mann-Whitney U-test) for independent samples (P < .05). Results show that both boys and girls of 1990s showed significantly smaller maxillary intermolar width when compared with 1950s. Posterior transverse interarch discrepancy was significantly minor in girls of 1990s. The present population has a greater probability of developing a malocclusion as a consequence of the secular trend toward the reduction of the width of the upper arch.

Authors+Show Affiliations

Department of Orthodontics, University of Florence, Via del Ponte di Mezzo 46-48, 50127 Florence, Italy.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

16637725

Citation

Defraia, Efisio, et al. "Dental Arch Dimensions in the Mixed Dentition: a Study of Italian Children Born in the 1950s and the 1990s." The Angle Orthodontist, vol. 76, no. 3, 2006, pp. 446-51.
Defraia E, Baroni G, Marinelli A. Dental arch dimensions in the mixed dentition: a study of Italian children born in the 1950s and the 1990s. Angle Orthod. 2006;76(3):446-51.
Defraia, E., Baroni, G., & Marinelli, A. (2006). Dental arch dimensions in the mixed dentition: a study of Italian children born in the 1950s and the 1990s. The Angle Orthodontist, 76(3), 446-51.
Defraia E, Baroni G, Marinelli A. Dental Arch Dimensions in the Mixed Dentition: a Study of Italian Children Born in the 1950s and the 1990s. Angle Orthod. 2006;76(3):446-51. PubMed PMID: 16637725.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dental arch dimensions in the mixed dentition: a study of Italian children born in the 1950s and the 1990s. AU - Defraia,Efisio, AU - Baroni,Giulia, AU - Marinelli,Andrea, PY - 2006/4/28/pubmed PY - 2006/7/1/medline PY - 2006/4/28/entrez SP - 446 EP - 51 JF - The Angle orthodontist JO - Angle Orthod VL - 76 IS - 3 N2 - The objective of this study was to compare the dental arch dimensions in the mixed dentition in two modern samples living in the same geographic area and separated by almost 35 years. A group of 83 subjects (39 boys and 44 girls) born between 1953 and 1959 (mean age: eight years and three months +/-15 months for the boys and seven years and 11 months +/-12 months for the girls) were compared with a group of 84 subjects (38 boys and 46 girls) born between 1990 and 1998 (mean age: eight years and eight months +/-12 months for the boys and eight years and four months +/-11 months for the girls). Measurements were taken on dental casts for posterior and anterior arch segments, intermolar and intercanine width, and mesiodistal size of incisors. The available anterior space in both arches and the posterior and anterior transverse dimensions were calculated. Groups were compared using a nonparametric test (Mann-Whitney U-test) for independent samples (P < .05). Results show that both boys and girls of 1990s showed significantly smaller maxillary intermolar width when compared with 1950s. Posterior transverse interarch discrepancy was significantly minor in girls of 1990s. The present population has a greater probability of developing a malocclusion as a consequence of the secular trend toward the reduction of the width of the upper arch. SN - 0003-3219 UR - https://www.unboundmedicine.com/medline/citation/16637725/Dental_arch_dimensions_in_the_mixed_dentition:_a_study_of_Italian_children_born_in_the_1950s_and_the_1990s_ L2 - http://www.angle.org/doi/10.1043/0003-3219(2006)076[0446:DADITM]2.0.CO;2?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -