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Dentigerous cysts of inflammatory origin. A clinicopathologic study
1Department of Conservative Dentistry, University of the Witwatersrand, Johannesburg, South Africa.
Summary
This study suggests inflammatory dentigerous cysts arise from nonvital deciduous teeth, impacting permanent tooth follicles. This research proposes two distinct types of dentigerous cysts: developmental and inflammatory.
Area of Science:
- Oral pathology
- Odontogenic cysts
- Dentigerous cyst histogenesis
Background:
- The origin of dentigerous cysts is debated, with developmental theories prevailing.
- This study investigates a series of dentigerous cysts potentially originating from inflammation.
Purpose of the Study:
- To report on 15 dentigerous cysts suspected to be of inflammatory origin.
- To propose the existence of two distinct types of dentigerous cysts: developmental and inflammatory.
Main Methods:
- Retrospective analysis of 15 dentigerous cyst cases.
- Histopathological examination of cyst linings and associated teeth.
- Clinical data review including patient demographics and affected teeth.
Main Results:
- Cases predominantly affected young males, with a predilection for the mandible.
- Most cysts were associated with nonvital deciduous teeth; permanent premolars and canines were most frequently involved.
- Histology revealed inflamed cysts lined by stratified squamous epithelium, with some exhibiting features mimicking radicular cysts.
Conclusions:
- Inflammatory dentigerous cysts may arise from periapical inflammation, typically from nonvital deciduous teeth, affecting permanent successors.
- Inflammatory exudate leads to reduced enamel epithelium separation and cyst formation.
- The findings support the classification of dentigerous cysts into developmental and inflammatory types.