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Long term clinical evaluation of three luting materials
1Department of Prosthodontics, University of Connecticut School of Dental Medicine, Farmington.
Swedish Dental Journal
|January 1, 1994
Summary
This four-year study found that zinc phosphate, glass ionomer, and resin cements generally performed well in dental restorations. Periodontal tissue health improved, and post-cementation sensitivity was minimal, suggesting biological response is key for luting agent selection.
Area of Science:
- Dental Materials Science
- Clinical Dentistry
- Biomaterials
Background:
- Permanent cementation is crucial for cast restorations.
- New luting agents require evaluation of physical, biological, and clinical properties.
- Understanding long-term performance is essential for dental practitioners.
Purpose of the Study:
- To evaluate the four-year clinical performance of three common luting agents.
- To assess the biological response of periodontal tissues and pulpal reactions to these cements.
- To compare the clinical parameters of zinc phosphate, glass ionomer, and resin cements.
Main Methods:
- A longitudinal study involving 26 patients and 61 cemented restorations (crowns, onlays, bridge abutments).
- Three luting agents (zinc phosphate, glass ionomer, resin cement) were used.
- Evaluations conducted at baseline, 7 days, 6 months, 12 months, and 4 years, assessing periodontal health, pulpal response, and clinical parameters.
Main Results:
- All tested luting agents demonstrated satisfactory performance over the four-year period.
- Significant improvement in the health of periodontal tissues adjacent to restorations was observed within 7 days.
- Post-cementation hypersensitivity was minimal, likely due to extended preparation-to-cementation intervals (over 4 weeks).
Conclusions:
- The choice of a luting agent should prioritize anticipated postoperative pulpal reactions.
- Biological properties and clinical performance are critical factors in selecting dental cements.
- Long-term evaluation supports the satisfactory clinical use of zinc phosphate, glass ionomer, and resin cements.