Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria

Early diagnosis and appropriate treatment are among the crucial components of comprehensive dental health care. Lack of data on the prevalence of malocclusion in the mixed dentition stage children underestimates the severity of malocclusion that can benefit from interceptive orthodontic. This resear...

Full description

Saved in:

Bibliographic Details
Main Author:	Zakaria, Najiyatu Nazihah
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Orthodontics
Online Access:	https://ir.uitm.edu.my/id/eprint/60876/1/60876.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.60876
record_format	uketd_dc
spelling	my-uitm-ir.608762022-06-02T08:27:35Z Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria 2020-09 Zakaria, Najiyatu Nazihah Orthodontics Early diagnosis and appropriate treatment are among the crucial components of comprehensive dental health care. Lack of data on the prevalence of malocclusion in the mixed dentition stage children underestimates the severity of malocclusion that can benefit from interceptive orthodontic. This research aims to determine the prevalence of malocclusion, and orthodontic treatment need amongst multi-ethnic Malaysian primary school children, and subsequently to develop and to test the validity and reliability of Index of Mixed Dentition Malocclusion (IMDM). It is a cross-sectional study with stratified random sampling based on the main ethnic composition. Clinical examinations were carried out, and study models were fabricated. The data collection was conducted at seven national primary schools in Sungai Buloh, Selangor. A total of 413 subjects (9-11 years old) were included in this study, and the data were analysed accordingly. The development of IMDM was carried out at the Universiti Teknologi MARA, Malaysia, with face and content validity being assessed using qualitative and quantitative methods. For the qualitative method, the IMDM draft was presented at two scientific meetings, whilst for the qualitative method, the face and content validity were determined according to the Content Validity Index (CVI) which comprised of item-level content validity index (I-CVI) and scale-level content validity index (S-CVI/Ave). Twelve assessors involved in assessing the face validity, while 8 panels of expert responsible in assessing content validity of IMDM draft. The validated IMDM was then undergoing validity testing, and the agreement was analysed using Fleiss Cohen Kappa test. Results show that the prevalence of malocclusion was high (76.0%) with the Class II predominating, while Class III was the least. There was no statistically significant difference between occlusal status to gender and ethnicity (p>0.05). Crowding was found to be the most predominant occlusal discrepancy (54.0%). Despite the high percentage of malocclusion, there was a low orthodontic treatment need as shown by the cumulative percentage of IOTN (DHC) grade 4 and 5 (30.5%). The Chinese ethnicity showed a significantly higher prevalence of definite need for orthodontic treatment compared to the other ethnicities with adjusted p=0.0007. On the other hand, early loss of deciduous second molar was frequently found in the Malay ethnicity (p=0.01). The qualitative validity of IMDM revealed that the IMDM draft required amendments. After modifying the IMDM draft, the amended IMDM showed an acceptable level of face and content validity with S-CVI/Ave: 0.87 and 0.86, respectively and excellent levels for both inter and intra-examiner reliability (Kappa = 1.00). In conclusion, this study provides information on the prevalence of malocclusion among Malaysian children, with subsequent development of validated and reliable Index of Mixed Dentition Malocclusion (IMDM). 2020-09 Thesis https://ir.uitm.edu.my/id/eprint/60876/ https://ir.uitm.edu.my/id/eprint/60876/1/60876.pdf text en public phd doctoral Universiti Teknologi MARA Faculty of Dentistry Sinniah, Saraswathy Devi (Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Sinniah, Saraswathy Devi (Dr.)
topic	Orthodontics
spellingShingle	Orthodontics Zakaria, Najiyatu Nazihah Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria
description	Early diagnosis and appropriate treatment are among the crucial components of comprehensive dental health care. Lack of data on the prevalence of malocclusion in the mixed dentition stage children underestimates the severity of malocclusion that can benefit from interceptive orthodontic. This research aims to determine the prevalence of malocclusion, and orthodontic treatment need amongst multi-ethnic Malaysian primary school children, and subsequently to develop and to test the validity and reliability of Index of Mixed Dentition Malocclusion (IMDM). It is a cross-sectional study with stratified random sampling based on the main ethnic composition. Clinical examinations were carried out, and study models were fabricated. The data collection was conducted at seven national primary schools in Sungai Buloh, Selangor. A total of 413 subjects (9-11 years old) were included in this study, and the data were analysed accordingly. The development of IMDM was carried out at the Universiti Teknologi MARA, Malaysia, with face and content validity being assessed using qualitative and quantitative methods. For the qualitative method, the IMDM draft was presented at two scientific meetings, whilst for the qualitative method, the face and content validity were determined according to the Content Validity Index (CVI) which comprised of item-level content validity index (I-CVI) and scale-level content validity index (S-CVI/Ave). Twelve assessors involved in assessing the face validity, while 8 panels of expert responsible in assessing content validity of IMDM draft. The validated IMDM was then undergoing validity testing, and the agreement was analysed using Fleiss Cohen Kappa test. Results show that the prevalence of malocclusion was high (76.0%) with the Class II predominating, while Class III was the least. There was no statistically significant difference between occlusal status to gender and ethnicity (p>0.05). Crowding was found to be the most predominant occlusal discrepancy (54.0%). Despite the high percentage of malocclusion, there was a low orthodontic treatment need as shown by the cumulative percentage of IOTN (DHC) grade 4 and 5 (30.5%). The Chinese ethnicity showed a significantly higher prevalence of definite need for orthodontic treatment compared to the other ethnicities with adjusted p=0.0007. On the other hand, early loss of deciduous second molar was frequently found in the Malay ethnicity (p=0.01). The qualitative validity of IMDM revealed that the IMDM draft required amendments. After modifying the IMDM draft, the amended IMDM showed an acceptable level of face and content validity with S-CVI/Ave: 0.87 and 0.86, respectively and excellent levels for both inter and intra-examiner reliability (Kappa = 1.00). In conclusion, this study provides information on the prevalence of malocclusion among Malaysian children, with subsequent development of validated and reliable Index of Mixed Dentition Malocclusion (IMDM).
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Zakaria, Najiyatu Nazihah
author_facet	Zakaria, Najiyatu Nazihah
author_sort	Zakaria, Najiyatu Nazihah
title	Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria
title_short	Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria
title_full	Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria
title_fullStr	Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria
title_full_unstemmed	Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria
title_sort	development of index of mixed dentition malocclusion / najiyatu nazihah zakaria
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Dentistry
publishDate	2020
url	https://ir.uitm.edu.my/id/eprint/60876/1/60876.pdf
_version_	1783735180260802560

Development of index of mixed dentition malocclusion / Najiyatu Nazihah Zakaria

Similar Items