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Histomorphologic changes in the gingiva and pulp of overretained primary teeth
E Bimstein1, W A Soskolne, J Lustmann
1Department of Pediatric Dentistry, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
ASDC Journal of Dentistry for Children
|February 24, 2001
Summary
Overretention of human primary teeth influences surrounding tissues, affecting gingival height and junctional epithelium. Prolonged retention correlates with changes in pulp inflammation and reduced odontoclastic activity.
Area of Science:
- Dentistry
- Oral Biology
- Histology
Background:
- Primary teeth overretention is a clinical concern.
- Understanding its effects on surrounding tissues is crucial for pediatric dentistry.
Purpose of the Study:
- To investigate the histologic changes in human primary teeth tissues due to overretention.
- To correlate the duration of overretention with specific cellular and tissue alterations.
Main Methods:
- Histologic assessment of twenty-five sites from twenty-one overretained human primary teeth.
- Utilized light microscopy and computerized morphometry for detailed analysis.
- Examined root surfaces, pulp tissue, and junctional epithelium relative to the cemento-enamel junction.
Main Results:
- Dentinoclasts observed on resorbing root surfaces in nine teeth.
- Polymorphonuclear leukocytes present in fourteen pulps; monocytes in all pulps.
- Significant correlations found between overretention duration, gingival height, junctional epithelium length, and apical migration.
Conclusions:
- Overretention leads to reduced odontoclastic activity in the pulp.
- Early overretention shows lower polymorphonuclear leukocyte presence, increasing with extended duration.
- Apical migration of the junctional epithelium is associated with prolonged primary tooth overretention.