Disinfection Of Complete Dentures Research Articles

Effectiveness of denture microwave disinfection for treatment of denture stomatitis: A systematic review and meta-analysis.

The aim of this systematic review was to evaluate the effectiveness of removable complete denture disinfection using microwaves for the treatment of denture stomatitis. This review identified studies comparing the efficacy of microwave prosthesis disinfection (I) to topical antifungal therapy (C) in the treatment of denture stomatitis (O), which included only individuals who used complete dentures and presented with denture stomatitis (P). The search was performed in six databases and identified 1524 records; after the removal of duplicates, 816 articles remained. Three articles were selected for qualitative synthesis and two for meta-analysis. Random-effects meta-analysis estimated the polled effects of microwave disinfection and antifungal therapy on the Candida counts and clinical manifestation of denture stomatitis. The GRADE approach was used to estimate the certainty of evidence. All included studies reported significant reductions in Candida counts and the frequency of denture stomatitis of groups subjected to microwave disinfection of dentures and topical antifungal therapy with nystatin. Significative differences between treatments were only detected for Candida quantification in the palate, within 90days follow-up period (SMD=0.47, 95% CI=0.02-0.91). Meta-analyses did not show any further differences between treatments (p>.05), considering the Candida quantification in dentures and the frequency of clinical signs of denture stomatitis. The certainty of the evidence was considered as low, according to GRADE approach. Microwave disinfection of complete dentures can be considered as efficient as antifungal therapy for the treatment of denture stomatitis. However, further well-designed studies are necessary to confirm such evidence.

Effect of Repeated Microwave Disinfection on the Surface Hardness of a Heat-Cured Denture Base Resin: An In vitro Study.

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.

Denture disinfection by microwave irradiation: A randomized clinical study

Objective This study evaluated the clinical effectiveness of two exposure times of microwave irradiation on the disinfection of complete dentures. Methods Biofilm samples were collected from dentures of 30 patients, who were randomly divided into two experimental groups of 15 subjects each: Group 1—patients had their maxillary denture microwaved for 3 min (650 W); Group 2—patients had their maxillary denture microwaved for 2 min (650 W). Denture biofilm samples were taken with swabs, before (left side surfaces) and after (right side surfaces) microwave irradiation. All microbial material was plated on selective media for Candida spp., Staphylococcus spp., mutans streptococci and a non-selective media. After incubation (48 h/37 °C), the number of colony-forming units (cfu/mL) was counted. Microorganisms which grew on selective media were identified using biochemical methods. The data were statistically analyzed by Kruskal–Wallis test, followed by Dunn's post-test ( α = 0.05). Results Microwave irradiation for 3 min (Group 1) resulted in sterilization of all dentures evaluated. After microwave irradiation for 2 min (Group 2), a significant decrease in Candida spp. ( P = 0.0062), Staphylococcus spp. ( P = 0.0178), mutans streptococci ( P = 0.0047) and non-identified species ( P < 0.0001) was achieved in comparison with the cfu/mL obtained before irradiation. The colonies grown after 2 min of microwave irradiation were identified as Candida albicans, non-aureus Staphylococci and Streptococcus mutans. Conclusion Microwave irradiation for 3 min may be a potential treatment to prevent cross-contamination.

Effectiveness of Microwave Irradiation on the Disinfection of Complete Dentures

Effectiveness of Microwave Irradiation on the Disinfection of Complete Dentures