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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Complete denture hygiene solutions: antibiofilm activity and effects on physical and mechanical properties of acrylic resin

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Author(s):
Rocha, Millena Mangueira [1] ; Carvalho, Adrianne Moura [1] ; Targa Coimbra, Flavia Cristina [1] ; Ferraz de Arruda, Carolina Noronha [1] ; Oliveira, Viviane de Cassia [1] ; Macedo, Ana Paula [1] ; Silva-Lovato, Claudia Helena [1] ; Pagnano, Valeria Oliveira [1] ; Oliveira Paranhos, Helena de Freitas [1]
Total Authors: 9
Affiliation:
[1] Univ Sao Paulo, Fac Odontol Ribeirao Preto, Dept Mat Dent & Protese, Ave Cafe S-N, BR-14040904 Ribeirao Preto, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Applied Oral Science; v. 29, 2021.
Web of Science Citations: 0
Abstract

Abstract Appropriated denture hygiene is a predictive factor for longevity of rehabilitation treatment and maintenance of the oral mucosal health. Although, disinfectant solutions are commonly used as denture cleansers, the impact of these solutions on acrylic resin-based dentures remain unclear. Objective To evaluate, in vitro, the antibiofilm activity of complete denture hygiene solutions and their effects on physical and mechanical properties of acrylic resin. Methodology For antibiofilm activity measurement acrylic resin specimens were contaminated with Candida albicans, Candida glabrata and Streptococcus mutans. After biofilm growth, the specimens were assigned to the hygiene solutions: Distilled water (Control); 0.2% Sodium hypochlorite (SH); Efferdent Power Clean Crystals (EPC) and 6.25% Ricinus communis (RC). The viability of microorganisms was evaluated by agar plate counts. In parallel, physical, and mechanical properties of the acrylic resin were evaluated after simulating a 5-year period of daily immersion in the previously mentioned solutions. The changes in surface roughness, color, microhardness, flexural strength, impact strength, sorption and solubility were evaluated. Data were compared by ANOVA followed by the Tukey test or Kruskal-Wallis followed by the Dunn test depending on the distribution (α=0.05). Results Regarding antibiofilm action, SH eliminated all microorganisms while EPC and RC exhibited moderate action against S. mutans (p=0.001) and C. glabrata (p<0.001), respectively. Relative to effects on the physical and mechanical properties of the acrylic resin, RC led to higher values of color change (p=0.030), hardness (p<0.001), surface roughness (p=0.006) and flexural strength (p<0.001). Moreover, RC induced the highest values of changes in solubility (p<0.001). EPC promoted greater changes in surface morphology, whereas immersion in SH retained the initial appearance of the acrylic resin surface. All hygiene solutions reduced the impact strength (p<0.05). Conclusion SH presented the most effective antibiofilm activity. In addition, changes on properties were observed after immersion in RC, which were considered within acceptable limits. (AU)

FAPESP's process: 17/21077-2 - Adverse effects of complete dentures hygienic solutions: in vitro study
Grantee:Adrianne Moura Carvalho
Support Opportunities: Scholarships in Brazil - Scientific Initiation