Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon

The aims of this study were to compare the treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusion in Malay population using orthodontics records and questionnaires respectively. 128 Malay patients who met the inclusion criteria were recruited; of which 64 patie...

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Main Author:	Oon, Siti Balqish
Format:	Thesis
Language:	English
Published:	2022
Subjects:	Orthodontics
Online Access:	https://ir.uitm.edu.my/id/eprint/78548/1/78548.pdf
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id	my-uitm-ir.78548
record_format	uketd_dc
spelling	my-uitm-ir.785482023-05-31T03:41:21Z Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon 2022 Oon, Siti Balqish Orthodontics The aims of this study were to compare the treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusion in Malay population using orthodontics records and questionnaires respectively. 128 Malay patients who met the inclusion criteria were recruited; of which 64 patients were in Class I malocclusion and another 64 patients in bimaxillary protrusion groups. This quantitative cohort study involved plotting of 29 landmarks on two-dimensional lateral cephalometric pre- and post-treatment radiographs using geometric morphometric analysis (GMA). Generalized Procrustes Analysis, Principal Component Analysis, Discriminant Function Analysis, followed by Procrustes ANOVA were performed using MorphoJ and SPSS softwares. Peer Assessment Rating (PAR) Index assessments were carried out using study casts of pre-treatment and post-treatment in both groups. A validated questionnaire was used to determine patients’ satisfaction post orthodontic treatment outcomes. Paired and unpaired t-test and correlation test were applied using SPSS software. Results showed that, with the application of GMA, bimaxillary protrusion group presented more protruded shape of incisor inclination compared to Class I malocclusion group. Both groups had similar skeletal and dental outcomes after treatment completed. In terms of soft tissue, bimaxillary protrusion group exhibited significant improvement in nasiolabial angles, while there was no significant difference in labiomental fold angles in both groups. Regardless of the incisor inclination, the PAR scores were similar for both before and after orthodontic treatment with significant improvement in 99% of the patients. Almost all patients were satisfied with their facial and dental aesthetics after treatment was carried out for both groups. Within the limitations of this study, it can be concluded that the treatment outcomes for both Class I and bimaxillary protrusion cases were satisfactory in terms of clinical improvement and patient satisfaction. 2022 Thesis https://ir.uitm.edu.my/id/eprint/78548/ https://ir.uitm.edu.my/id/eprint/78548/1/78548.pdf text en public phd doctoral Universiti Teknologi MARA (UiTM) Faculty of Dentistry Hafizan, Noraina
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Hafizan, Noraina
topic	Orthodontics
spellingShingle	Orthodontics Oon, Siti Balqish Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon
description	The aims of this study were to compare the treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusion in Malay population using orthodontics records and questionnaires respectively. 128 Malay patients who met the inclusion criteria were recruited; of which 64 patients were in Class I malocclusion and another 64 patients in bimaxillary protrusion groups. This quantitative cohort study involved plotting of 29 landmarks on two-dimensional lateral cephalometric pre- and post-treatment radiographs using geometric morphometric analysis (GMA). Generalized Procrustes Analysis, Principal Component Analysis, Discriminant Function Analysis, followed by Procrustes ANOVA were performed using MorphoJ and SPSS softwares. Peer Assessment Rating (PAR) Index assessments were carried out using study casts of pre-treatment and post-treatment in both groups. A validated questionnaire was used to determine patients’ satisfaction post orthodontic treatment outcomes. Paired and unpaired t-test and correlation test were applied using SPSS software. Results showed that, with the application of GMA, bimaxillary protrusion group presented more protruded shape of incisor inclination compared to Class I malocclusion group. Both groups had similar skeletal and dental outcomes after treatment completed. In terms of soft tissue, bimaxillary protrusion group exhibited significant improvement in nasiolabial angles, while there was no significant difference in labiomental fold angles in both groups. Regardless of the incisor inclination, the PAR scores were similar for both before and after orthodontic treatment with significant improvement in 99% of the patients. Almost all patients were satisfied with their facial and dental aesthetics after treatment was carried out for both groups. Within the limitations of this study, it can be concluded that the treatment outcomes for both Class I and bimaxillary protrusion cases were satisfactory in terms of clinical improvement and patient satisfaction.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Oon, Siti Balqish
author_facet	Oon, Siti Balqish
author_sort	Oon, Siti Balqish
title	Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon
title_short	Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon
title_full	Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon
title_fullStr	Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon
title_full_unstemmed	Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon
title_sort	comparison of treatment outcomes of orthodontically treated class i malocclusion and bimaxillary protrusive patients in the malay population / siti balqish oon
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Dentistry
publishDate	2022
url	https://ir.uitm.edu.my/id/eprint/78548/1/78548.pdf
_version_	1783736256312639488

Comparison of treatment outcomes of orthodontically treated Class I malocclusion and bimaxillary protrusive patients in the Malay population / Siti Balqish Oon

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