Non-syndromic tooth agenesis: pattern and distribution in permanent dentition among IIUM dental polyclinip Patients
Introduction: Non-syndromic tooth agenesis defined as developmental absence of more than one tooth that appears as independent congenital oral trait. Its prevalence, pattern and distribution rates vary by populations. The aim of this study was to identify the pattern and distribution of tooth age...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
International Islamic University Malaysia
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/59667/ http://irep.iium.edu.my/59667/ http://irep.iium.edu.my/59667/1/59667_Non-Syndromic%20Tooth%20Agenesis_complete_new.pdf |
| Summary: | Introduction: Non-syndromic tooth agenesis defined as developmental absence of more than one
tooth that appears as independent congenital oral trait. Its prevalence, pattern and distribution
rates vary by populations. The aim of this study was to identify the pattern and distribution of
tooth agenesis in permanent dentition among IIUM dental polyclinic patients. Materials and
Methods: 3481 patients aged 12 to 60 years who attended IIUM Dental Polyclinic from April 2016
until April 2017 was evaluated. 33 hypodontia and 2 oligodontia were ruled out. Patients were
required to undergo clinical and radiographic examinations. Results: On an average, two teeth
were missing per patients. Excluding third molar, the prevalence of population under study was
1.005%. Half of the total cases showed missing a single tooth (45.7%), whereas the others ranged
from two until nine. The most common missing tooth in maxillary and/or mandibular are lateral
incisors (28%) followed by second premolars (26.67%) and first premolars (25.33%). There was no
significance difference in missing tooth between male and female (p=0.48). More missing teeth
identified at maxilla (54.67%) compared to mandible (45.33%). More teeth were found missing on
the right side (54.67%), on the posterior region (53.33%) and also unilaterally (71.42%). Tooth
anomalies such as peg-shaped tooth (8.57%) and microdontia (5.71%) were found in some cases.
Conclusion(s): In conclusion, mild hypodontia is considered as the most common tooth agenesis.
The prevalence studied population was less than the previous studies in Malaysia and lateral
incisors were identified as the most common missing tooth.
KEYWORDS: tooth agenesis, hypodontia, oligodontia, distribution |
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