Journal Article

Mandibular asymmetry in cleft lip and palate patients

Gokmen Kurt, Mehmet Bayram, Tancan Uysal and Mete Ozer

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 32, issue 1, pages 19-23
Published in print February 2010 | ISSN: 0141-5387
Published online September 2009 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjp063
Mandibular asymmetry in cleft lip and palate patients

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The aims of this study were to evaluate condylar, ramal, and condylar plus ramal mandibular vertical asymmetry in a group of cleft lip and palate (CLP) patients and compared with subjects with a ‘normal’ occlusion. Mandibular asymmetry index (condylar, ramal, and condylar plus ramal) and gonial angle measurements were examined on panoramic radiographs. The study groups comprised 20 unilateral cleft lip and palate (UCLP) patients (10 males and 10 females; mean age 13.03 ± 3.33 years), 20 bilateral cleft lip and palate (BCLP) patients (10 males and 10 females; mean age 13.73 ± 3.53 years), and a control group of 20 subjects (9 males and 11 females; mean age 14.35 ± 2.46 years) with a normal occlusion. Kruskal–Wallis one-way analysis of variance was used to determine statistically significant differences between the groups for condylar, ramal, and condylar plus ramal asymmetry index measurements at the 95 per cent confidence interval.

None of the investigated groups showed statistically significant gender differences for posterior vertical height measurements (P > 0.05). Asymmetry indices were similar, with no statistically significant differences found in any of the groups. However, gonial angle showed statistically significant differences (P < 0.05) in the UCLP group and condylar height (CH) in the BCLP patients (P < 0.001). Except for CH measurement in the BCLP group, CLP patients have symmetrical mandibles when compared with a normal occlusion sample.

Journal Article.  2785 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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