Page 134 - FINAL COMPENDIUM 2020-2021 27.2.2022

USE OF THE SOCIO-DENTAL APPROACH IN ESTIMATING ORTHODONTIC TREATMENT
NEEDS IN ADOLESCENT PATIENTS
NMRR-16-896-30028

Wan Hassan WN, Makhbul MZM, Yusof ZYM

Introduction: The socio-dental model integrates clinical assessment, perceived impacts of
malocclusion on quality of life, and behavioural propensity when prioritising orthodontic
treatment. Objective: To compare the effect of using different instruments to measure
impact-related need on the assessment of orthodontic treatment need based on the
socio-dental framework. Materials and methods: In this cross-sectional study, 206
Malaysian adolescents (age: 11–18 years) were screened in orthodontic clinics to identify
those with normative need, oral impacts due to malocclusion, and having high and
medium- to-high behavioural propensities. The Index of Orthodontic Treatment Need
classified normative need. The Psychosocial Impact of Dental Aesthetics (PIDA)
questionnaire and the Condition-Specific Child-Oral Impacts on Daily Performances (CS-
OIDP) index measured oral impacts. Subjects’ behavioural propensities for successful
treatment outcome were based on the Basic Periodontal Examination and International
Caries Detection and Assessment System. Data were analysed using the McNemar test.
Results: The response rate was 99.0%. Estimates of normative need (89.7%) were
significantly reduced under the socio- dental model by 65.7% (p < 0.0001) when impact-
related need was measured using PIDA, and by 41.7% (p < 0.0001) when measured using
CS-OIDP. The difference between the results of the two instruments in proportions of
identified need for orthodontic treatment was 24.0% (p < 0.0001). Conclusion: For
Malaysian adolescents, estimates of need for orthodontic treatment when assessed with
the socio-dental approach were substantially lower than normative clinical assessment
and depended highly on the tools selected to assess the patient’s impact-related need.
Health policy makers should understand the implication of adopting one instrument or
the other when estimating orthodontic treatment need.

Keywords: Oral health-related quality of life, Malocclusion, Index of orthodontic treatment need,
Socio-dental model, Normative need

Published in J Orofac Orthop 83, 244–254 (2022). https://doi.org/10.1007/s00056-021-00298-y

Dr Wan Nurazreena Wan Hassan
Department of Paediatric Dentistry and Orthodontics Prof. Dr Zamros Yuzadi Mohd Yusof
Faculty of Dentistry Department of Community Oral Health and Clinical
Universiti Malaya Prevention
Kuala Lumpur, Malaysia Faculty of Dentistry
Universiti Malaya
Dr Mohd Zambri Mohamed Makhbul Kuala Lumpur, Malaysia
Orthodontic Unit
Cahaya Suria Dental Clinic
Ministry of Health Malaysia
Kuala Lumpur, Malaysia

110