Purpose: This study characterized the effect of water immersion on the strength of denture polymers.
Materials and methods: Four denture-base polymers and four denture-reline polymers were tested for flexural strength at proportional limits (FSpl) at 24 hours and at monthly intervals. The equilibrium strength of each polymer was estimated.
Results: The denture polymers took from 24 hours to 4 months to reach their equilibrium strength. The equilibrium strengths of the denture polymers were significantly different.
Conclusion: Water immersion affected the strength of most denture polymers. Different denture polymers behaved differently in response to water immersion.