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Identification of common foreign material in postendodontic granulomas and cysts
H S Koppang1, R Koppang, S O Stolen
1Dental Faculty, University of Oslo, Norway.
The Journal of the Dental Association of South Africa = Die Tydskrif Van Die Tandheelkundige Vereniging Van Suid-Afrika
|May 1, 1992
Summary
This study identified common foreign materials in postendodontic lesions, including amalgam, endodontic sealers, calcium hydroxide byproducts, and cellulose. These findings aid in understanding material interactions in endodontic treatments.
Area of Science:
- Endodontics
- Oral Pathology
- Materials Science
Background:
- Periapical granulomas and cysts can contain foreign material.
- Identifying these materials is crucial for understanding lesion etiology and treatment.
Purpose of the Study:
- To identify and characterize common foreign materials found in postendodontic periapical granulomas and cysts.
Main Methods:
- Analysis of 29 biopsies using H&E, von Kossa, and Calcofluor White staining.
- Microscopy (light, polarization, fluorescence) and Scanning Electron Microscopy with Energy Dispersive X-ray analysis (SEM-EDX).
Main Results:
- Four groups of foreign materials were identified: amalgam (Au, Ag, Cu, Hg, Sn, Zn), endodontic sealer components (Ag, Ba, Bi, Cu, S, Ti, Zn), calcium hydroxide byproducts (Ca, P), and cellulose (C, O).
Conclusions:
- Common foreign materials in postendodontic lesions include dental amalgam, sealer components, calcium hydroxide, and cellulose.
- Characterization aids in understanding the pathogenesis of these lesions and potential material-related complications.