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Dental and alveolar arch asymmetries in normal occlusion and Class II Division 1 and Class II subdivision malocclusions.
World J Orthod. 2009 Spring; 10(1):7-15.WJ

Abstract

AIM

To compare the degree of intra- and interarch dentoalveolar asymmetry among patients with a normal occlusion, Class II Division 1 malocclusion, and Class II subdivision malocclusion.

METHODS

The sample comprised dental casts of 150 (72 males [ages 22. 1 +/- 3.11 and 78 females [ages 21.1 +/- 2.1]) normal occlusion subjects, 106 (45 males [ages 17.8 +/- 1.8] and 61 females [ages 16.5 +/- 2.91) Class II Division 1 patients, and 40 (18 males [ages 15.8 +/- 2.8] and 22 females [ages 15.2 +/- 3.3]) Class II subdivision malocclusions. Maxillary and mandibular reference lines were constructed and used for the intraarch asymmetry measurements. Thirty-six width measurements were performed on the dental casts of each subject. Analysis of variance (ANOVA) was used for comparisons of the groups, and Pearson's correlation coefficients were computed to determine the interarch associations.

RESULTS

No statistically significant intra-arch asymmetry was found for maxillary and mandibular dental arch and alveolar width in any of the three groups. All variables were larger on the right side in the normal occlusion subjects. Further, the left side maxillary dental and alveolar arch width measurements were larger in the Class II Division 1 group. None of these differences, however, were statistically significant. In the Class II subdivision group, only the Class II sides' mandibular dental arch measurements were larger (P < .05). Maxillary and mandibular total dental arch and alveolar width dimensions differed among the groups (P < .001). Except for maxillary and mandibular canine alveolar width, opposing interarch dental and alveolar landmarks were significantly correlated with the transverse dimensions.

CONCLUSION

Although some landmarks in the current study showed statistically significant and insignificant differences, the mean arithmetic differences were small, inconsistent, and not likely clinically important.

Authors+Show Affiliations

Department of Orthodontics, Erciyes University, Kayseri, Turkey. tancanuysal@yahoo.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

19388427

Citation

Uysal, Tancan, et al. "Dental and Alveolar Arch Asymmetries in Normal Occlusion and Class II Division 1 and Class II Subdivision Malocclusions." World Journal of Orthodontics, vol. 10, no. 1, 2009, pp. 7-15.
Uysal T, Kurt G, Ramoglu SI. Dental and alveolar arch asymmetries in normal occlusion and Class II Division 1 and Class II subdivision malocclusions. World J Orthod. 2009;10(1):7-15.
Uysal, T., Kurt, G., & Ramoglu, S. I. (2009). Dental and alveolar arch asymmetries in normal occlusion and Class II Division 1 and Class II subdivision malocclusions. World Journal of Orthodontics, 10(1), 7-15.
Uysal T, Kurt G, Ramoglu SI. Dental and Alveolar Arch Asymmetries in Normal Occlusion and Class II Division 1 and Class II Subdivision Malocclusions. World J Orthod. 2009;10(1):7-15. PubMed PMID: 19388427.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dental and alveolar arch asymmetries in normal occlusion and Class II Division 1 and Class II subdivision malocclusions. AU - Uysal,Tancan, AU - Kurt,Gokmen, AU - Ramoglu,Sabri Ilhan, PY - 2009/4/25/entrez PY - 2009/4/25/pubmed PY - 2009/8/6/medline SP - 7 EP - 15 JF - World journal of orthodontics JO - World J Orthod VL - 10 IS - 1 N2 - AIM: To compare the degree of intra- and interarch dentoalveolar asymmetry among patients with a normal occlusion, Class II Division 1 malocclusion, and Class II subdivision malocclusion. METHODS: The sample comprised dental casts of 150 (72 males [ages 22. 1 +/- 3.11 and 78 females [ages 21.1 +/- 2.1]) normal occlusion subjects, 106 (45 males [ages 17.8 +/- 1.8] and 61 females [ages 16.5 +/- 2.91) Class II Division 1 patients, and 40 (18 males [ages 15.8 +/- 2.8] and 22 females [ages 15.2 +/- 3.3]) Class II subdivision malocclusions. Maxillary and mandibular reference lines were constructed and used for the intraarch asymmetry measurements. Thirty-six width measurements were performed on the dental casts of each subject. Analysis of variance (ANOVA) was used for comparisons of the groups, and Pearson's correlation coefficients were computed to determine the interarch associations. RESULTS: No statistically significant intra-arch asymmetry was found for maxillary and mandibular dental arch and alveolar width in any of the three groups. All variables were larger on the right side in the normal occlusion subjects. Further, the left side maxillary dental and alveolar arch width measurements were larger in the Class II Division 1 group. None of these differences, however, were statistically significant. In the Class II subdivision group, only the Class II sides' mandibular dental arch measurements were larger (P < .05). Maxillary and mandibular total dental arch and alveolar width dimensions differed among the groups (P < .001). Except for maxillary and mandibular canine alveolar width, opposing interarch dental and alveolar landmarks were significantly correlated with the transverse dimensions. CONCLUSION: Although some landmarks in the current study showed statistically significant and insignificant differences, the mean arithmetic differences were small, inconsistent, and not likely clinically important. SN - 1530-5678 UR - https://www.unboundmedicine.com/medline/citation/19388427/Dental_and_alveolar_arch_asymmetries_in_normal_occlusion_and_Class_II_Division_1_and_Class_II_subdivision_malocclusions_ DB - PRIME DP - Unbound Medicine ER -