Faiza Amin, Sidra Akram, Amir Akbar Shaikh.
Denture Cleansers Affect the Mechanical Behavior of Heat Polymerized Acrylic Resins.
J Pak Dent Assoc Jan ;24(2):87-92.

STATEMENT OF THE PROBLEM: Disinfection of the dental prosthesis is the prime requirement to prevent cross infection control. The disinfectant regimen used to disinfectant prosthesis should not adversely affect the properties of these prosthesis. Therefore the compatibility between prosthesis and the disinfectant must be considered prior to disinfection. OBJECTIVE: The aim of this study was to examine the surface hardness of denture base resins after immersed in four commercially available denture cleansers solution. STUDY DESIGN: In vitro experimental study. METHODOLOGY: A Total of one hundred and four specimens of measuring 13 mm-4 mm were fabricated. These 104 specimens were randomly divided into six groups. Each group consists of 18 specimens. These groups were: baseline (0 day dry), artificial saliva (control); Fittydent denture cleanser tablets; Fixodentdenture cleanser tablets, polident and corega. After 60 days of immersion in their respective experimental group, the specimens were tested for Vickers microhardness with Vickers microhardness tester.Statistical analysis was carried out by using SPSS 16 version. RESULTS:There was statistically significant difference in the surface hardness among all groups (p < 0.001) after 60 days of immersion. CONCLUSION: Surface hardness of denture base resins decreased after immersion in denture cleansers. KEY WORDS: Denture base, Denture cleanser, Vickers microhardness.

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