Page 141 - FINAL COMPENDIUM 2020-2021 27.2.2022

PREVALENCE OF DENTAL ANOMALIES AMONG ORTHODONTIC PATIENTS IN SOUTH-
EAST SABAH
NMRR-19-1143-47950

Lee JH

Objective: This study evaluated the prevalence of dental anomalies among orthodontic
patients at a referral centre in South-East Sabah. Materials and methods: A total of 155
pre-treatment orthodontic records of patients who attended the orthodontic
consultation clinic in September 2017 to October 2019 were included in this cross-
sectional, retrospective study. Data taken were demographic data (age, gender, and
ethnic groups), and types of dental anomalies. All data were analysed descriptively. The
differences between gender and ethnic groups with respect of the dental anomalies were
tested using Fisher’s exact test. The level of significance was set at 5% (p < 0.05). Results:
The mean age of the patients was 16.17 ± 0.23 years. More than three-quarter of the
patients were females (n=117, 75.48%). Most of the patients were Chinese (n=75, 48.39%)
and Bumiputera Sabah (n=54, 34.84%). More than one-third of the patients presented
with at least one dental anomaly (n=53, 34.19%). The most common dental anomalies
were supernumerary (n=16, 10.32%), hypodontia (n=14, 9.03%), and impacted maxillary
canine (n=12, 7.74%). The prevalence of dental anomalies in males (n=15, 39.47%) was
higher than females (n=38, 32.48%). Supernumerary was more common in males (n=7,
18.42%), while hypodontia was more common in females (n=12, 10.26%). Conclusion: The
prevalence of dental anomalies among orthodontic patients at a referral centre in South-
East Sabah was 34.19%. The most common dental anomalies were supernumerary,
hypodontia, and impacted maxillary canine. Supernumerary was more common in males,
while hypodontia was more common in females.

Published in Malaysian Dental Journal. 2020, Vol. 2: Page 84-95
Dr Lee Jin Han
Orthodontic Specialist Unit
Queen Elizabeth II Hospital
Kota Kinabalu, Sabah

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