Abstract
Aims: The study aims to evaluate the influence of various denture cleansers on colonization of Candi-da albicans to Cobalt–Chromium alloy denture base and the subsequent roughness assosiated with these cleansers. Materials and methods: Thirty–six samples of Co–Cr denture base and five cleansers, four prepared(alum, salt, soda+vinegar, soda+thymol), one commercial ( protefix ) and distilled wa-ter(D.W) as a control were used. Samples were immersed in denture cleansers for one month in which each cleanser had 6 samples excluding 6 samples in D.W as a control. Half of samples for each cleans-er were immersed ½ hr per day and the other half immersed 8hrs per day through one month, before microbiological examination, samples were tested for surface roughness using profilometer. Candida albicans cell suspension was incubated with the test samples for 1hr at 37°C after which the test sam-ples were immersed in their cleansers for 1hr. Visualization, inspection and enumeration of adherent C.albicans cells and detection of the anti–adherent effect of the cleansers was achieved by using light microscopy. Results: The results demonstrated insignificant difference in surface roughness of Co–Cr alloy denture base in the cleansers at 1/2 hr and a significant difference at 8 hrs immersion. There was a significant difference in C.albicans colonization to Co–Cr denture base in which all the cleansers showed less adhesion than control. The results also revealed that (soda+Thymol oil) cleanser ex-pressed the least values of colonization and roughness among other cleansers. Conclusions: The cleansers were effective as anti–adherent yeast cells to Co–Cr denture base and showed roughness de-grees less than control
Highlights
Metal denture bases may be made from different materials like gold, Co–Cr, Ni–Cr, and stainles steal
An ideal denture cleanser should be non toxic, bactericidal, fungicidal and compatible with denture base, [9] i.e it must clean effectively without adversly affecting denture base material properties especially roughness because rough surface is unfavorable and may affect plaque formation or inhibit its removal.[10,11] The purpose of the current study is to determine the effect of five immersion–type denture cleansers on colonization of Candida albicans to a Co–Cr alloy denture base material and the changes produced in surface roughness
Samples of Co–Cr were distributed according to their cleansers in which every cleanser had 6 samples, and 6 samples were immersed in distilled water as a control, time of immersion in denture cleansers and distilled water was 1hr, after that the samples were removed from cleansers and distilled water, washed by dipping in 100 ml of PBS to remove the adherent cells that were affected by the action of cleansers
Summary
Metal denture bases may be made from different materials like gold, Co–Cr, Ni–Cr, and stainles steal. The fungal organisms that are most commonly associated with denture plaque are of genus candida. These yeasts are present in the saliva of a majority of denture wearers and display an affinity for adherence to denture materials, [6] so the presence of a prosthetic device is one of the several reasons for infection by candida [7,8]. An ideal denture cleanser should be non toxic, bactericidal, fungicidal and compatible with denture base, [9] i.e it must clean effectively without adversly affecting denture base material properties especially roughness because rough surface is unfavorable and may affect plaque formation or inhibit its removal.[10,11] The purpose of the current study is to determine the effect of five immersion–type denture cleansers on colonization of Candida albicans to a Co–Cr alloy denture base material and the changes produced in surface roughness
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