Microwave Disinfection of Complete Dentures Contaminated <i>In Vitro</i> with Selected Bacteria

Dovigo, Lívia Nordi; Pavarina, Ana Cláudia; Ribeiro, Daniela Garcia; Oliveira, Juliana Aparecida de; Vergani, Carlos Eduardo; Machado, Ana Lúcia

doi:10.1111/j.1532-849x.2009.00489.x

Cited by 39 publications

(49 citation statements)

References 29 publications

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“…It is known that micro wave irradiation is akind of radio frequency energy that excites water molecules, generating heat [42], and it has been applied to inactivateor reduce several species of microorganisms [1,12,20,25]. The explanation about microbial killing with micro wave irradiation, however, is not yet completely understood.…”

Section: Discussionmentioning

confidence: 99%

“…Ho wever, 1 min and 2 min exposition resulted in disinfect ion of the specimens. In addition, Dovigo et al [1] found that micro wave irradiation for 3 min at 650 W p roduced sterilization of complete dentures contaminated with S. aureus and Pseudomonas aeruginosa.…”

Section: Discussionmentioning

confidence: 99%

“…Shorter microwave exposure times, e.g. 1 to 5 min of irradiat ion, have been found to be effective for denture disinfect ion [24] and microorganisms inactivation including Candida species [1,5]. Recent clin ical trials showed that micro waving for 3 min(650 W) was an effective method to sterilize co mplete dentures and also to treat denture stomatitis [25].…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, dentures act as a potential cause of cross-infection transmission between patients and dental personnel. Likewise, as a reservoir of pathogens, intaglio surfaces of acrylic resin dentures enhance the infection potential of microorganisms and can favor the riseof oral in fections [1,2].…”

Section: Introductionmentioning

confidence: 99%

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Cell Membrane Integrity of Candida Albicans after Different Protocols of Microwave Irradiation

Campanha¹,

Jorge²,

Giampaolo³

et al. 2013

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cell Membrane Integrity of Candida Albicans after Different Protocols of Microwave Irradiation

Campanha¹,

Jorge²,

Giampaolo³

et al. 2013

AJIDM

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show abstract

“…A combination of both methods has shown effective results in reducing the amount of microorganisms present. [2][3][4]7,8 Chemical methods may be classified into four groups, based on the mechanism of action or main ingredients of cleansers, namely sodium hypochlorites, alkaline peroxides, mouth rinses and enzymes. 3,4 Alkaline peroxide solutions are widely indicated for controlling biofilm; however, the efficacy of such agents remains inconclusive.…”

mentioning

confidence: 99%

Effect of Alkaline Peroxide-type Denture Cleaners to the Microbial Profile in Maxillary Complete Denture

et al. 2018

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Objective: To investigate the effect of alkaline peroxide-type denture cleanser agents on the microbial profile, namely Streptococcus, Staphylococcus, and Candida species, in maxillary complete dentures. Methods: A total of 20 patients with maxillary complete dentures were recruited. Three denture cleanser agents were selected (n = 5): Polident ® (P); Steradent ® (S); and Pearlie White ® (PW), with distilled water (DW) as control. Dentures were brushed before immersion with denture cleansers. Denture biofilm was collected from the palatal impression surface of the denture before and after immersion. The collected microorganisms were cultured and colony-forming units (CFU) were counted. Results: Significant reduction in the numbers of Streptococcus and Staphylococcus was observed after immersion with all denture cleanser agents (p< 0.05). On the other hand, no denture cleanser was significantly effective against Candida species (p>0.05). Furthermore, S was more effective among other cleansers compared to DW (p< 0.05). Conclusion: Immersion of dentures in denture cleansers can reduce the amount of microorganisms on denture surfaces; thus, leading to effective denture hygiene. Steradent ® denture cleanser showed the highest percentage reduction of polymicrobial organisms.

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Effect of the incorporation of cellulose nanocrystals into a microwave‐polymerized denture base resin: Cellulose nanocrystals into a denture base resin

et al. 2021

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The aim is to evaluate the mechanical, physical, and microbiological properties of a denture base resin (Onda-Cryl, microwave-polymerized), after the incorporation of cellulose nanocrystals (CNC). Mixtures of CNC and the resin are prepared at 0% (control group), 0.25%, 0.5%, 0.75% and 1% for the flexural strength (FS) and Vickers hardness (VH) tests. Due to the VH results, surface roughness (SR), surface free energy (SFE), and the single-and dual-species biofilm formation of Candida albicans and methicillin-susceptible Staphylococcus aureus (MSSA) for metabolic activity (XTT assay), antimicrobial activity (CFU mL −1 ) and confocal laser microscopy tests are performed for the groups 0% and 0.75% CNC. Data are statistically analyzed (𝜶 = .05). For FS, CNC at 0.25%, 0.5% and 0.75% are similar to the control. A significant increase of VH is observed at 0.75% and 1%. The 0.75% CNC group is similar to the control for the SFE and SR tests. There is no significant difference between control group and 0.75% CNC group for adhesion and biofilm formation of different microorganisms analyzed for XTT and CFU mL −1 . These results are corroborated by confocal microscopy images. The incorporation of CNC at 0.75% into a microwave-polymerized denture base resin provides promising results regarding VH and does not influence the physical, mechanical, and microbiological properties evaluated. These results suggest that the addition of CNC in the resin does not display surface alterations capable of increasing adhesion or biofilm formation of C. albicans or S. aureus.

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Microwave Disinfection of Complete Dentures Contaminated In Vitro with Selected Bacteria

Abstract: Microwave irradiation for 3 minutes at 650 W produced sterilization of complete dentures contaminated with S. aureus and P. aeruginosa. Dentures contaminated with B. subtilis were disinfected by microwave irradiation after 3 and 5 minutes at 650 W.

Cited by 39 publications

References 29 publications

Cell Membrane Integrity of Candida Albicans after Different Protocols of Microwave Irradiation

Cell Membrane Integrity of Candida Albicans after Different Protocols of Microwave Irradiation

Effect of Alkaline Peroxide-type Denture Cleaners to the Microbial Profile in Maxillary Complete Denture

Effect of the incorporation of cellulose nanocrystals into a microwave‐polymerized denture base resin: Cellulose nanocrystals into a denture base resin

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