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Type I dentin dysplasia: report of two cases
W K Duncan1, T M Perkins, M K O Carroll
1Department of Pediatric Dentistry, University of Mississippi School of Dentistry.
Annals of Dentistry
|January 1, 1991
Summary
Dentin dysplasia is a rare genetic disorder. Current subclassification of Type I dentin dysplasia based on root length is not biologically justified without genetic evidence of distinct disease processes.
Area of Science:
- Dental Science
- Genetics
- Rare Diseases
Background:
- Dentin dysplasia is a rare autosomal dominant developmental disturbance of dentin.
- It affects approximately 1 in 100,000 people, with two previously described forms.
- Existing classifications have been challenged due to inadequate differentiation in reported cases.
Observation:
- This paper details two cases of Type I dentin dysplasia in mixed and permanent dentitions.
- The cases exhibit classic features consistent with the disorder.
- Proposed subclassifications of Type I based on root length and pulpal remnants are discussed.
Findings:
- Differences in root length may inform treatment strategies for dentin dysplasia.
- The authors argue against establishing separate types of dentin dysplasia based solely on root length or pulpal remnants.
- Subclassification requires distinct disease processes, histology, symptoms, or etiologies.
Implications:
- Further genetic or chromosomal research is needed to validate distinct subcategories of Type I dentin dysplasia.
- Until then, variations in severity within a single disease entity should be acknowledged.
- This perspective aids in understanding the spectrum of dentin dysplasia and managing patient care.