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Color stability of provisional materials in vivo
J H Koumjian1, D N Firtell, A Nimmo
1Restorative Denistry, University of California, School of Dentistry, San Francisco.
The Journal of Prosthetic Dentistry
|June 1, 1991
Summary
Provisional restoration resins showed varying color stability over nine weeks. Four materials, including True Kit and Duralay, exhibited superior stain resistance for long-term use.
Area of Science:
- Dental Materials Science
- Biomaterials
Background:
- Color stability is crucial for provisional restorations, impacting aesthetics and patient satisfaction over time.
- Evaluating the in vivo discoloration of provisional restorative resins is essential for clinical longevity.
Purpose of the Study:
- To assess the in vivo color stability of seven different provisional restorative resins over a nine-week period.
- To identify resins with superior color stability for extended provisional restorations.
Main Methods:
- Resin specimens were fabricated and incorporated into complete dentures (maxillary and mandibular).
- Patients used standard toothbrushes and toothpaste for denture hygiene over nine weeks.
- Discoloration was evaluated clinically at one, five, and nine weeks.
Main Results:
- No significant discoloration was observed in the first five weeks for any material.
- At nine weeks, True Kit, Duralay, Trim, and Protemp demonstrated significantly less staining compared to three other resins.
- All tested resins were deemed acceptable for short-term (≤5 weeks) provisional restorations regarding color stability.
Conclusions:
- Four specific resins (True Kit, Duralay, Trim, Protemp) offer better color stability for longer provisional restorations.
- For short-term provisional restorations, dentists can prioritize other material properties like fracture resistance, marginal accuracy, ease of fabrication, and cost.