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Curing efficiency of visible light- and dual-cured denture reliners
G L Polyzois1, A I Kakaboura, G C Eliades
1Department of Removable Prosthodontics, School of Dentistry, University of Athens, Greece. gpolyz@cc.uoa.gr
The International Journal of Prosthodontics
|February 24, 2001
Summary
Dual-cured denture reliners demonstrate superior curing efficiency compared to light-cured options. This study found dual-cured materials maintained consistent polymerization, unlike light-cured ones which showed reduced double bonds over time.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
Background:
- Effective curing of denture reliners is crucial for prosthodontic success.
- Light-cured and dual-cured materials are commonly used for denture relining.
Purpose of the Study:
- To compare the curing efficiency of 8 light- and dual-cured denture reliners.
- To assess the impact of storage conditions and denture base resin on curing efficiency.
Main Methods:
- Fourier infrared (FTIR) spectroscopy was used to quantify remaining carbon double bonds.
- Curing efficiency was measured on top and bottom surfaces immediately after light exposure and after 1 week of storage.
- Specimens were also polymerized through a denture base resin.
Main Results:
- Dual-cured reliners showed no significant difference in curing between top and bottom surfaces.
- Light-cured reliners exhibited significant differences in curing between surfaces.
- Most reliners showed reduced double bonds after storage; light-cured reliners polymerized through resin had more remaining double bonds.
Conclusions:
- Dual-cured denture liners offer better curing efficiency than light-cured liners.
- Dual-cured materials provide more consistent polymerization, even when light transmission is limited.