Influence of a new denture cleaning technique based on photolysis of H2O2 the mechanical properties and color change of acrylic denture base resin

Nakahara, Tatsuro; Harada, Akio; Yamada, Yukie; Odashima, Yu; Nakamura, Keisuke; Inagaki, Ryoichi; Kanno, Taro; Sasaki, Keiichi; Niwano, Yoshimi

doi:10.4012/dmj.2013-047

Cited by 10 publications

(9 citation statements)

References 31 publications

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“…Ideal denture care products should remove inorganic/organic deposits and stains; have costeffective, bactericidal, and fungicidal properties; and be easy to handle for the human health and harmless for the denture materials (12) .Various types of disinfectants were used in dental practice like glutaraldehyde, formaldehyde, sodium hypochlorite, hydrogen peroxide, chlorhexidine, vinegar and mixture of different chemicals (13)(14)(15) . Sodium hypochlorite solutions are very effective in various concentrations against microorganism; however, the concentration is a factor that should be considered to prevent any adverse effects on the materials of the prosthetic devices (16) .…”

Section: Introductionmentioning

confidence: 99%

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An In-Vitro Evaluation of Alternative Disinfection Methods of Acrylic resin and Thermoplastic Resin Denture Base Materials

Kholief

Kabeel

2018

ADJ-for Girls

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Objectives: This study was designed to evaluate the antimicrobial effect of alternative disinfection methods of heat cured acrylic resin and thermoplastic resin denture base materials and to investigate the porosity resulting from disinfection by these methods. Material and Methods: Disc specimens of heat cured acrylic resin and thermoplastic resin were fabricated and divided into four groups for each denture base material according to the disinfection method. The specimens were contaminated in vitro by standardized suspensions of Candida albicans (C. albicans).The following test agents were used: distilled water (as a control group), 5% sodium hypochlorite (NaOCl), 100% white vinegar and 650 W microwave (MW) energy. After the disinfection procedure, the number of viable microbial cells was counted in CFU/ml. Porosities of acrylic resin and thermoplastic resin specimens were evaluated with Scanning Electron Microscope (SEM) after one month of daily exposure to disinfection. Results: ANOVA test showed that, there was a statistical significant difference among the tested treatment agents against C. albicans in each denture base material(P≤ 0.05). Post Hoc test showed a statistical significant difference between the control samples and the other disinfected samples in the microbial count, however, there was no statistical significant difference among the tested methods of disinfection (P>0.05).Regarding porosity area percentage, there was a statistical significant difference among the tested methods of disinfection (P≤ 0.05), where, 100% white vinegar showed the highest porosities followed by NaOCl then the MW disinfection and the least is the control group. Regarding comparison between the two denture base materials, thermoplastic resin showed statistically significant lower microbial adherence as well as lower porosity area percentage than heat cured acrylic resin(P≤ 0.05). Conclusion: All the tested disinfection methods shown to be efficient against C. albicans. Thermoplastic resin demonstrated lower microbial adherence than heat cured acrylic resin and lower porosity area percentages.

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Section: Introductionmentioning

confidence: 99%

“…The vinegar is a sour and astringent liquid consisting mainly of acetic acid. This is product is cheap, easily found in the market, and seems to have antimicrobial potential (15,17) .…”

Section: Introductionmentioning

confidence: 99%

An In-Vitro Evaluation of Alternative Disinfection Methods of Acrylic resin and Thermoplastic Resin Denture Base Materials

Kholief

Kabeel

2018

ADJ-for Girls

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“…Denture stomatitis, a common multi-factorial disease, can be caused by biofilm of denture surface owing to insufficient hygiene of oral cavity and dentures [ 1 ]. Candida associated denture stomatitis, also called chronic actrophic candidiasis, affects 11% to 67% of geriatric complete denture wearers [ 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Antimicrobial Denture Base Resin on Multi-Species Biofilm Formation

Zhang

Ren

Zhou

et al. 2016

IJMS

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Our aims of the research were to study the antimicrobial effect of dimethylaminododecyl methacrylate (DMADDM) modified denture base resin on multi-species biofilms and the biocompatibility of this modified dental material. Candida albicans (C. albicans), Streptococcus mutans (S. mutans), Streptococcus sanguinis (S. sanguinis), as well as Actinomyces naeslundii (A. naeslundii) were used for biofilm formation on denture base resin. Colony forming unit (CFU) counts, microbial viability staining, and 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) array were used to evaluate the antimicrobial effect of DMADDM. C. albicans staining and Real-time PCR were used to analyze the morphology and expression of virulence genes of C. albicans in biofilm. Lactate dehydrogenase (LDH) array and Real-time PCR were conducted to examine the results after biofilm co-cultured with epithelial cell. Hematoxylin and eosin (HE) staining followed by histological evaluation were used to study the biocompatibility of this modified material. We found that DMADDM containing groups reduced both biomass and metabolic activity of the biofilm significantly. DMADDM can also inhibit the virulence of C. albicans by means of inhibiting the hyphal development and downregulation of two virulence related genes. DMADDM significantly reduced the cell damage caused by multi-species biofilm according to the LDH activity and reduced the expression of IL-18 gene of the cells simultaneously. The in vivo histological evaluation proved that the addition of DMADDM less than 6.6% in denture material did not increase the inflammatory response (p > 0.05). Therefore, we proposed that the novel denture base resin containing DMADDM may be considered as a new promising therapeutic system against problems caused by microbes on denture base such as denture stomatitis.

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“…Thus, the acrylic resin properties were retained after immersion in disinfectant solutions in the present study, for a period of time corresponding to the useful life of the dentures. Among various other aspects, such as occlusion and the condition of the patient's residual ridge, the properties of acrylic resin have a direct impact on the useful life of the denture, since adaptation and contamination are aspects that are relevant to longevity and are linked to the material's performance [15].…”

Section: Discussionmentioning

confidence: 99%

Effect of immersion in various disinfectant solutions on the properties of a heat-cured acrylic resin

Pereira

Genari

Leitune

et al. 2019

RGO, Rev. Gaúch. Odontol.

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Objective:The aim of the present study was to evaluate the influence, of immersion in different disinfectant solutions, on microhardness and surface roughness of a heat-cured acrylic resin. Methods: Specimens were immersed in distilled water, commercial vinegar for domestic use, sodium hypochlorite and hydrogen peroxide, for 150 hours or 300 hours (n=10). After periods of immersion, Knoop microhardness and surface roughness were evaluated using a microhardness tester and a roughness tester, respectively. The data were analyzed using two-way ANOVA and Holm-Sidak, at a level of significance of 5%. Results: The microhardness values ranged from 16.90 ± 0.33 to 17.80 ± 0.51 and roughness values from 0.05 ± 0.01 to 0.08 ± 0.02. There is no difference in microhardness and roughness between groups and times (p>0.05). Conclusion: Within the limitations of this study, it is possible to conclude that vinegar and hydrogen peroxide, as alternative disinfectant solutions for acrylic resin devices, did not promote deleterious effects on microhardness and polishing of a heat-cured acrylic resin used for the fabrication of prostheses, neither in the medium term nor the long term.Indexing terms: Acetic acid. Complete denture. Disinfection. RESUMOObjetivo: Avaliar a influência da imersão em diferentes soluções desinfetantes na microdureza e rugosidade de uma resina acrílica de termoativação. Métodos: Corpos de prova de resina acrílica termopolimerizável foram imersos em água destilada, vinagre comercial de uso doméstico, hipoclorito de sódio e peróxido de hidrogênio, por períodos de 150 h ou 300 h (n=10). A microdureza Knoop e a rugosidade superficial dos corpos de prova foram avaliadas com o uso de microdurômetro e rugosímetro, respectivamente. Os dados foram analisados com o teste análise de variância a dois critérios e Holm-Sidak, com nível de significância de 5%. Resultados: Os valores de microdureza variaram de 16,90 ± 0,33 a 17,80 ± 0,51 e a rugosidade, de 0,05 ± 0,01a 0,08 ± 0,02. Não houve diferença

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Influence of a new denture cleaning technique based on photolysis of H2O2 the mechanical properties and color change of acrylic denture base resin

Cited by 10 publications

References 31 publications

An In-Vitro Evaluation of Alternative Disinfection Methods of Acrylic resin and Thermoplastic Resin Denture Base Materials

An In-Vitro Evaluation of Alternative Disinfection Methods of Acrylic resin and Thermoplastic Resin Denture Base Materials

Effect of Antimicrobial Denture Base Resin on Multi-Species Biofilm Formation

Effect of immersion in various disinfectant solutions on the properties of a heat-cured acrylic resin

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