An in vitro study into the effect of a limited range of denture cleaners on surface roughness and removal of Candida albicans from conventional heat-cured acrylic resin denture base material

2004 ◽  
Vol 31 (5) ◽  
pp. 460-467 ◽  
Author(s):  
Z. Harrison ◽  
A. Johnson ◽  
C. W. I. Douglas
Author(s):  
Shaimaa M. Fouda ◽  
Mohammed M. Gad ◽  
Passent Ellakany ◽  
Ahmad M. Al-Thobity ◽  
Fahad A. Al-Harbi ◽  
...  

2019 ◽  
Vol 44 (1) ◽  
pp. 103-110
Author(s):  
Najat A. Mohamed ◽  
Ahmed M. Abdelhamid ◽  
Sonia M. El Shabrawy

Author(s):  
Amal Nawasrah ◽  
Mohammed Gad ◽  
Mai El Zayat

Statement of problem: Henna has been added to polymethylmethacrylate (PMMA) as a new type of antifungal agent; however, its effect on the latter’s physical properties has not been investigated. Purpose: This study aimed to evaluate the effect of the addition of various henna concentrations on the surface roughness and hardness of PMMA denture base material. Materials and Methods: A total of 99 specimens of rectangular-shaped (10×20×3 mm3) acrylic specimens were prepared from heat-cured acrylic resin. Specimens were divided into one control group without the addition of henna and five test groups, which were prepared by adding Yamani henna powder to acrylic powder at concentrations of 1wt%, 2.5wt%, 5wt%, 7.5wt%, and 10wt%. The polymer was added to the monomer before being mixed, packed, and processed using the conventional water bath method. After processing, specimens were finished and polished, then kept in distilled water for 48+2 h. A profilometer and Vickers hardness tester were used to measure surface roughness and hardness respectively. Statistical data analysis was conducted via SPSS version 20.0 (IBM, USA). Results: The addition of henna at varying concentrations significantly increased surface roughness values (P ≤ 0.01) while decreasing hardness (P ≤ 0.0001). The most favorable addition value was 1% henna between all henna groups. Conclusion: The addition of henna to the acrylic resin may negatively affect the surface properties of PMMA acrylic denture base.


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