Effect of Different Disinfecting Solutions on some Properties of Maxillofacial Elastomers Over Time


  • Qaiss B. Al-Jumaili Khanzad Training Center, Erbil, Kurdistan Region, Iraq. Author
  • Salim A. Salim Department of Prosthodontics, College of Dentistry, Hawler Medical University, Erbil, Kurdistan Region, Iraq. Author




Maxillofacial, Disinfectant, Silicon hardness, Color stability


Objective: The use of disinfectant solutions for a long time can cause distortion in the maxillofacial prosthesis. The purpose of this study is to check the efficiency of three disinfectant solutions on bacteria and Candida and to evaluate the changes in the color and the hardness of the silicon with the increasing of the time of disinfection.          

Methods: Twenty-eight samples of maxillo-facial silicon with dimensions of 4cm*1cm*3mm for each sample were used and divided into four groups. Group I: Normal saline 0.9 %, Group II: Sodium hypochlorite 3%, Group III: Thymol 2%, and Group IV: Neutral soap. The samples contaminated with isolated Staphylococcus epidermidis bacteria and Candida Albicans; each group immersed for 10 minutes and then 30 hours in testing solutions evaluating the growth of colonies. Hardness test was done for all testing groups by the use of Shore-A hardness tester after 30 hours of immersion for each group. Color stability was also done by the use of a digital Spectrophotometer for the same samples after the same period of immersion.

Results: Sodium hypochlorite and thymol solutions showed a highly significant difference on bacterial and Candida growth in both time intervals with no effect on hardness and color, Neutral soap showed a poor disinfection effect on microorganisms with a low significant change in the hardness and no effect on color stability.

Conclusions: Sodium hypochlorite 3% and Thymol 2% are very effective disinfection solutions on both bacteria and candida with very little effects on the hardness and color stability


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How to Cite

Effect of Different Disinfecting Solutions on some Properties of Maxillofacial Elastomers Over Time. (2019). Sulaimani Dental Journal, 6(2), 7. https://doi.org/10.17656/sdj.10091

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