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Updated: Jul 5, 2026
07:26
Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
[Clinical analysis of simple hypodontia].
Jun-Xia Zhu1, Shu-Guo Zheng, Li-Hong Ge
1Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Summary
Congenital tooth agenesis, or born missing teeth, shows varied distribution. The mandibular second premolar is most commonly absent, with no significant differences based on sex or location, but more missing teeth are seen in oligodontia.
Area of Science:
- Dentistry
- Oral and Maxillofacial Surgery
- Genetics
Background:
- Congenital tooth agenesis, a common developmental anomaly, involves the congenital absence of teeth.
- Understanding the prevalence and patterns of hypodontia is crucial for diagnosis and treatment planning.
Purpose of the Study:
- To analyze the distribution and characteristics of congenitally missing teeth.
- To identify specific tooth types and locations most frequently affected by hypodontia.
Main Methods:
- Retrospective analysis of 183 patients diagnosed with simple hypodontia.
- Statistical evaluation of the distribution of missing teeth based on sex, dental arch, and specific tooth type.
Main Results:
- No statistically significant differences in the number of missing teeth were observed between sexes or among different dental sites (maxilla, mandible, left/right sides).
- The mandibular second premolar was identified as the most frequently missing tooth.
- Patients with oligodontia (six or more missing teeth) exhibited a significantly higher prevalence of missing molars compared to those with hypodontia (fewer than six missing teeth).
Conclusions:
- Congenital tooth agenesis presents unique clinical characteristics in each patient.
- Personalized treatment strategies are essential for managing hypodontia effectively.
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