Related Experiment Videos
Features of oligodontia in three generations
J M Stimson1, J E Sivers, G L Hlava
1Department of Dental Hygiene, University of Nebraska Medical Center College of Dentistry, Lincoln 68583-0740, USA.
The Journal of Clinical Pediatric Dentistry
|April 1, 1997
Summary
This study investigates a three-generation family with congenital oligodontia, finding an autosomal dominant trait likely responsible. Spousal influence introduced Witkop
Area of Science:
- Genetics
- Odontology
- Developmental Biology
Background:
- Oligodontia, the congenital absence of six or more teeth, can have genetic and environmental influences.
- Understanding the inheritance patterns of oligodontia is crucial for genetic counseling and predicting familial risk.
- The study reviews terminology related to tooth development and congenital tooth anomalies.
Observation:
- A three-generation family pedigree exhibiting congenital oligodontia, characterized by missing permanent teeth, particularly first molars.
- A second-generation member married an individual with Witkop syndrome, leading to oligodontia manifestations in their child.
- Additional findings include decreased tooth size and a prominent maxillary labial frenum.
Findings:
- Autosomal dominant inheritance is the suspected primary cause of oligodontia in this family.
- The absence of permanent first molars is a notable and rare feature within this pedigree.
- Witkop syndrome appears to have influenced the phenotype in the third generation.
Implications:
- Congenital oligodontia necessitates a multidisciplinary dental approach, addressing both physical and emotional well-being.
- Screening for ectodermal abnormalities is recommended for children with missing permanent teeth to rule out associated syndromes.
- Fifty percent of the fourth generation may be affected, with potential variations in penetrance and expression.