EFFECT OF SIWAK EXTRACTS ON THE HARDNESS PROPERTY OF VINYL ADDITION CURED SILICONE MAXILLOFACIAL PROSTHETIC MATERIAL

NADIA TAWFIQ JAFFER, University of Duhok
2020 The Journal of The University of Duhok  
Aims: The study aims to evaluate the hardness of the vinyl addition silicone maxillofacial material under the influence of disinfection and immersion time. Materials and Methods: 40 samples of (20*15*3.5)mm were fabricated from the maxillofacial elastomer and divided into 4 groups of disinfection solutions (three concentrations of siwak extract: 1% , 2% and 5%), and Chlorehexidine was used as a commercial disinfectant , each group was subdivided into 2 immersion periods (15 and 30 hours), the
more » ... rdness of the samples was measured before immersion and considered as self control and also the hardness was measured at the end of each immersion period by the use of Shore-A durometer. Results: A significant difference was observed in hardness means after immersion and also there were significant differences between groups of disinfection in which siwak extract 1% observed the least value and chlorehexidine the highest one. Conclusions: long immersion period 30 hours increased the hardness of the maxillofacial elastomer more than the shorter period 15 hours and the disinfection with the extracts of Siwak were better than chlorhexidine when the hardness is the factor.
doi:10.26682/sjuod.2020.22.1.6 fatcat:lwwyw77gfbdspey6g5txogcqw4