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Published on: December 20, 2024
Retentive characteristics of dental cementation materials
K J Hunsaker1, G J Christensen, R P Christensen
1Creighton University, Omaha, Nebraska, USA.
General Dentistry
|October 24, 2012
Summary
Resin cements offer superior retention for dental crowns compared to glass ionomer, polycarboxylate, and zinc phosphate. Base metal crowns showed higher retention with resin cements, indicating material choice impacts dental crown stability.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Prosthodontics
Background:
- Dental cements are crucial for crown retention.
- Various cement types, including resin, glass ionomer, polycarboxylate, and zinc phosphate, are available.
- Understanding their retentive characteristics is vital for clinical success.
Purpose of the Study:
- To compare the in vitro tensile resistance to dislodgment of different dental cements.
- To evaluate the influence of crown material (base vs. noble metal) on cement retention.
Main Methods:
- In vitro testing of five dental cements: two resin, one glass ionomer, one polycarboxylate, and one zinc phosphate.
- Cementation of prepared extracted teeth with base and noble metal crowns.
- Measurement of tensile resistance to dislodgment.
Main Results:
- Resin cements (C & B Metabond, Panavia) exhibited significantly higher tensile resistance than glass ionomer (Fuji I), polycarboxylate (Durelon), and zinc phosphate (Fleck's).
- No significant difference in retention was found between base and noble metal crowns when using glass ionomer, polycarboxylate, or zinc phosphate cements.
- Base metal crowns showed statistically higher retention rates with the tested resin cements.
Conclusions:
- Resin cements provide superior retention for dental crowns compared to traditional cements.
- The choice of cement material significantly influences crown retention, particularly with resin-based systems.
- Clinical application of resin cements may enhance the long-term stability of dental restorations, especially on base metal substructures.
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