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Title:	Three-dimensional evaluation of soft tissue lip changes in the treatment of class II division 1 malocclusion
Authors:	Wan Aini binti Wan Yahaya (P71742)
Supervisor:	Murshida Marizan Nor, Dr.
Keywords:	Three-dimensional (3D) Orthodontic Dissertations, Academic -- Malaysia
Issue Date:	8-Jun-2016
Description:	Three-dimensional (3D) imaging has enabled the acquisition of highly accurate data for evaluation, diagnosis and treatment planning of orthodontic patients. The aim of this study was to assess three-dimensional lip changes and patients’ perception in the treatment of patients with Class II division 1 malocclusion. Thirty-five subjects with class II division 1 malocclusion, incompetent lips and extraction of first premolars were evaluated. 3D lip scans were obtained before treatment (T1), immediately after bonding (T2), 3 months (T3), 6 months (T4) and 12 months (T5) after bonding. Eight landmarks were identified and six measurements were evaluated using a one-way repeated measures ANOVA test. A questionnaire was given to all subjects before bonding (Q0), 6 months (Q1) and 12 months after bonding (Q3). Friedman and Wilcoxon signed ranked test were used to evaluate patient satisfaction. Spearman’s correlation test was used to associate between 3D lip changes and patients’ satisfaction after 12 months of treatment. After 12 months of orthodontic treatment, vertically, there was a downward movement of the upper lip (p>0.05) and a significant upward movement of the lower lip (p<0.05). This resulted in a reduced distance between the upper and lower lips (p<0.05). Transversely, a significant increase was observed in the distance between the lip commissures (p<0.01). Antero-posteriorly, there were no significant changes to the upper and lower lip (p>0.05). There was a significant increase in patients’ satisfaction towards their lips after 12 months of treatment (p<0.05). A correlation was found only between lip changes and patients’ awareness towards their lip position. In conclusion, after 12 months of orthodontic treatment, more vertical and transverse changes of the lips and minimal anteroposterior changes were observed in patients’ with class II division 1 malocclusion. Patients’ satisfaction towards their lip changes increased after 12 months of treatment.,Ijazah Doktor Pergigian Klinikal dan Ortodontik
Pages:	109
Call Number:	WU20.5.W244t 2016 9
Publisher:	UKM, Kuala Lumpur
Appears in Collections:	Faculty of Dentistry / Fakulti Pergigian

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