Surface roughness of acrylic resins used for denture base after chemical disinfection: A systematic review and meta‐analysis

Abstract

Objective: This study aimed to systematically review the literature regarding the surface roughness of polymethylmethacrylate (PMMA) for denture bases, disinfected with different chemical agents and analyse the outcomes of the included studies.Background: Various chemical disinfection protocols to clean the removable dental prosthesis are reported in the literature, however systematic reviews analysing the outcomes in the surface roughness of the PMMA are lacking. Methods:The Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) checklist was used to structure this systematic review. The inclusion criteria were as follows: clinical trials, in vitro studies, studies in English and studies comparing the effects of chemical disinfection products on the surface roughness of PMMA. An electronic search was performed in the following databases: PubMed/ MEDLINE, Scopus and Web of Science.; we also conducted a manual search for articles published in specific journals of dental prostheses and dental materials. Results:Thirteen in vitro studies in this systematic review and meta-analysis.

Do denture cleansers influence the surface roughness and adhesion and biofilm formation of <i>Candida albicans</i> on acrylic resin? Systematic review and meta-analysis

“…All these factors can explain the increase in surface roughness after immersion in alkaline peroxide. However, even though a similar study has already been published [9], most of the studies included in the qualitative analysis indicated no significant change or did not generate considerable clinical impact [21,23]. This finding is reaffirmed by the meta-analysis results, in which the surface roughness of the acrylic resin was not affected by alkaline peroxide treatment.…”

“…This reaction yields an alkaline peroxide solution that decomposes into nascent oxygen (oxidizing agent). Hence, this phenomenon indicates that this disinfection agent could combine both mechanical and chemical disinfection through the release of oxygen [9,33,34]. Other factors could also explain the variations in surface roughness after immersion in alkaline peroxide, such as the level of oxygenation obtained in the chemical reaction, temperature, and duration of immersion [31,34,35], which varied considerably between studies.…”

“…When considered as an isolated process, the effectiveness of brushing is reduced due to irregularities of acrylic resin, such as surface roughness and porosity which may turn into adhesion sites; therefore, the combination of both methods is recommended to inactivate microorganisms effectively [7,8]. At the same time, studies have shown some disadvantages of using denture cleanser agents, primarily concerning the damage they can cause to the physical and mechanical properties of acrylic resin [9].…”

Does microwave disinfection affect the dimensional stability of denture base acrylic resins? A systematic review

“…The methodological quality of the selected studies was assessed using the Johanna Briggs Institute (JBI) Critical Appraisal Checklist for Quasi‐Experimental Studies (non‐randomised experimental studies), 23,24 which has been adapted for in vitro studies. The referred checklist contains nine questions that can be answered as “Yes,” “No,” “Unclear,” and “Not applicable” to evaluate the possibility of biases in the design, conduct, and analysis of the studies.…”

Impact of Surface Changes and Microbial Adhesion on Mucosal Surface Finishing of Resin Denture Bases by Shot Blast Polishing Using Viscoelastic Media

“…Since PMMA resin has low flexural strength and low flexibility despite its many advantages [ 3 , 4 ], high-strength polysulfone resin and flexible polyamide resin have been developed [ 5 , 6 ]. However, any material for use as an intraoral prosthetic device requires a smooth surface from the viewpoint of microbial plaque retention, staining, oral health, and patient comfort [ 7 , 8 , 9 ]. To achieve ideal aesthetics and oral hygiene, the surface of a dental prosthesis needs to be as smooth as possible, even if the patient manages the dental prosthesis properly.…”