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ORIGINAL ARTICLE
Year : 2018  |  Volume : 9  |  Issue : 3  |  Page : 446-451

Effect of repeated microwave disinfection on the surface hardness of a heat-cured denture base resin: An In vitro study


Department of Prosthodontics, VSPM DCRC, Nagpur, Maharashtra, India

Correspondence Address:
Dr. Priti Jaiswal
“Shree Ganesh,” Plot No. 8, South Ambazari Road, Laxmi Nagar, Nagpur - 440 022, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ccd.ccd_271_18

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Statement of the Problem: Disinfection of complete dentures is very crucial to prevent cross-contamination and infection. Microwave disinfection is a quick, easy, and effective means to disinfect dentures. However, the effect of repeated microwave cycles on the surface hardness property of heat-cured polymethyl methacrylate (PMMA) resin is not known. Materials and Methods: A total of 60 samples of heat-cured PMMA resin were fabricated for surface hardness. Each group was divided into four groups, according to the number of microwave cycles (MWC) applied for disinfection: control group (no disinfection) 0MWC, 1MWC group, 3MWC group, and 5MWC group. Results: No significant change on the surface hardness of a heat-cured denture base resin on repeated microwave disinfection. Conclusion: The repeated microwave disinfection showed statistically nonsignificant change on the surface hardness of the PMMA resin. Microwave disinfection can be safely used in regular practice to avoid cross-contamination and can also be suggested to patients for the regular denture hygiene.


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