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Assessment of Surface Roughness and Microbial Growth on Acrylic Resin Samples Fabricated Using Various Impression Materials
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M Taghavi1   , F Bahraini2 , E Ansarifard3 , K Zomorodian4 , Z ZareShahrabadi5 |
1- Department of Prosthodontics, Dental Biomaterials Research Center, Shiraz University of Medical Sciences, Shiraz, Iran, , taghvam@sums.ac.ir
2- Department of Orthodontics, Shiraz University of Medical Sciences, Shiraz, Iran
3- Department of Prosthodontics, Dental Biomaterials Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,
4- Basic Sciences in Infectious Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
5- Department of Medical Mycology and Parasitology, Shiraz University of Medical Sciences, Shiraz, Iran. |
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Abstract: (1104 Views) |
Background & aim: Microbial adhesion to the surface of acrylic denture bases can lead to several complications, including denture stomatitis. This study aimed to determine and compare the surface roughness and microbial colonization on acrylic resin samples fabricated using different impression materials.
Methods: In this in vitro study, 69 acrylic samples were fabricated using Zinc Oxide Eugenol (ZOE), Alginate, and Addition Silicone impression materials. The mixed impression materials were poured into wax molds, and the acrylic samples were subsequently processed. Surface roughness was measured using a profilometer. The samples were then incubated with two species of Candida and four types of Streptococcus for 48 hours. Data were analyzed using one-way ANOVA followed by Tukey's post-hoc test.
Results: Samples fabricated with Alginate and ZOE exhibited significantly higher surface roughness compared to those made with Addition Silicone. Biofilm formation on the surface of acrylics fabricated with Alginate and ZOE was significantly greater than in the Addition Silicone group ($p < 0.001$ and $p < 0.005$, respectively). Furthermore, a significant difference was observed in Streptococcus mutans biofilm formation among the three types of impression materials ($p = 0.022$).
Conclusion: Acrylic resin samples fabricated using ZOE and Alginate impression materials demonstrated higher surface roughness than those made with silicone materials. Additionally, Addition Silicone was associated with lower adhesion of Candida and bacterial species.
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| Keywords: Dental impression materials, Denture bases, Candida albicans, Streptococcus mutans |
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Full-Text [PDF 692 kb]
(55 Downloads)
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Type of Study: Applicable |
Subject:
Dentistry
Received: 2024/08/29 | Accepted: 2026/02/2 | Published: 2026/02/3
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