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Glass ionomer cements and dental pulp
I A Mjör1, I Nordahl, L Tronstad
1Scandinavian Institute of Dental Materials, Haslum, Norway.
Endodontics & Dental Traumatology
|April 1, 1991
Summary
Glass ionomer cements caused minimal pulp reactions in dog teeth. Bacterial contamination at the filling interface was the primary cause of inflammation, with some teeth showing unique dentin changes.
Area of Science:
- Dental Materials Science
- Oral Pathology
Background:
- Glass ionomer cements are widely used dental restorative materials.
- Assessing their biocompatibility and pulp response is crucial for clinical application.
Purpose of the Study:
- To evaluate the pulp and dentin reactions to glass ionomer cements in Class V cavities.
- To identify the etiological factors contributing to inflammatory responses.
Main Methods:
- Class V cavities were prepared in dog teeth.
- Glass ionomer cement was inserted as a restorative material.
- Pulp and dentin tissues were histologically examined.
Main Results:
- Minimal pulp reactions were observed with glass ionomer cement placement.
- Bacterial presence at the tooth/filling interface was the main driver of inflammation.
- Approximately half of the teeth exhibited unusual dentin reactions, including hematoxyphilic bands and altered predentin mineralization.
Conclusions:
- Glass ionomer cements demonstrate a generally low level of pulpal reactivity.
- Bacterial leakage is a significant factor in post-operative inflammation.
- The clinical relevance of observed dentin reactions requires further investigation.