Microbial adhesion and viability on novel CAD/CAM framework materials for implant‐supported hybrid prostheses

The aim of the study was to investigate the adhesion and viability of Streptococcus oralis and Candida albicans under in vitro conditions on CAD/CAM framework materials for implant‐supported hybrid prostheses. Twenty‐nine specimens were prepared from each of three different materials: ZR (zirconia),...

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Bibliographic Details
Published in:European journal of oral sciences 2023-02, Vol.131 (1), p.e12911-n/a
Main Authors: Vulović, Stefan, Popovac, Aleksandra, Radunović, Milena, Petrović, Sanja, Todorović, Miloš, Milić‐Lemić, Aleksandra
Format: Article
Language:English
Subjects:
Adhesion
Biofilms
CAD/CAM
CAM
Cell viability
colony forming unit
Computer aided manufacturing
Contact angle
Correlation analysis
Correlation coefficient
Correlation coefficients
Dental Implants
Kruskal-Wallis test
Materials Testing
Microorganisms
Polyether ether ketones
Polymers
Prostheses
Prosthetics
Scanning electron microscopy
Surface Properties
Surface roughness
Variance analysis
Zirconia
Zirconium dioxide
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Summary:The aim of the study was to investigate the adhesion and viability of Streptococcus oralis and Candida albicans under in vitro conditions on CAD/CAM framework materials for implant‐supported hybrid prostheses. Twenty‐nine specimens were prepared from each of three different materials: ZR (zirconia), PEEK (polyether ether ketone) and CoCr4 (CoCr4 alloy). The experimental part included surface roughness (SR) and contact angle of water (CAW) measurements, followed by colony forming unit (CFU), cell viability assay and scanning electron microscopy (SEM) analyses of Strep. oralis and C. albicans biofilms on the materials’ surfaces. Kruskal‐Wallis and one‐way analysis of variance (ANOVA) tests were used for differences between materials, and the correlation between measurements was estimated using Spearman's correlation coefficient. PEEK specimens revealed higher SR, CAW and CFU mean values, than ZR and CoCr4 specimens. Strong positive correlation was found between SR and CFU and between CAW and CFU for both microbial species. Cell viability assay revealed similar values for both species across materials. Higher numbers of Strep. oralis and C. albicans on PEEK specimens confirm the impact of the higher surface roughness and contact angle values on the microbial adhesion and describes PEEK as less desirable than ZR and CoCr4 from microbiological aspect.
ISSN:0909-8836
1600-0722
DOI:10.1111/eos.12911