fa Comparative Evaluation of Physical Properties of Four Tissue Conditioners Relined to Modeling Plastic Material پروتزهای دندانی Prothtodontics پژوهشي Research <p> <strong>Objective:</strong></p><p>  Little is known about the interaction of tissue conditioners and modeling plastics. This study evaluates the influence of a variety of commercial tissue conditioners on alteration of viscoelastic properties of modeling plastics. </p><p> <strong>Materials and Methods</strong>:</p><p>  In this in vitro study, the dynamic viscoelastic properties of four commercially available tissue conditioners (TC), Visco-gel (VG), GC Soft-Liner (SL), FITT (FT), and Coe Comfort (CC), relined to modeling plastics with a thickness of 2mm were evaluated after 1 and 7 days of water immersion with the use of storage modulus, loss modulus, and tan delta parameters. Values for these three parameters for each tissue conditioner were statistically analyzed by Kruskal Wallis and Mann Whitney tests with P value sets at<0.05. </p><p> <strong>Results</strong>:</p><p>  Complex modulus and loss tangent values of TC were not significantly different among specimens containing 0, 2, 5 and 10 wt.%-SZ, respectively. In FT and TC containing 2 wt.%-SZ, these values were not significantly different between 1 and 28 days in both water- and saliva immersions. </p><p> <strong>Conclusion:</strong></p><p>  The results suggest that relining with modeling plastics does affect TC’s inherent dynamic viscoelastic properties, while the other tissue conditioners investigated may be found to have changed viscoelastic properties as a consequence of vicinity to the modeling plastics. </p><hr><p></p><p> <strong>Source: </strong>Journal of Dentistry of Tehran University of Medical Science</p><p> <a href="http://jdt.tums.ac.ir/index.php/jdt/article/view/916.pdf" target="_blank"><font color="#0000ff">Full Text</font></a></p> Elastic Modulus; Tissue Conditioning, Dental; Modeling Plastics 0 0 http://idai.ir/browse.php?a_code=A-10-32-2664&slc_lang=fa&sid=1 Abbas Monzavi 100319475328460012542 100319475328460012542 No Laser Research Center of Dentistry, Dentistry Research Institute, Department of Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran Hakimeh Siadat 100319475328460012543 100319475328460012543 No Dental Implant Research Center, Dentistry Research Institute, Department of Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran Mohammad Atai 100319475328460012544 100319475328460012544 No Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran Marzieh Alikhasi m_alikhasi@yahoo.com 100319475328460012545 100319475328460012545 Yes Dental Research Center, Dentistry Research Institute, Department of Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran Vahideh Nazari 100319475328460012546 100319475328460012546 No Tehran University of Medical Sciences, Tehran, Iran Sadigheh Sheikhzadeh 100319475328460012547 100319475328460012547 No Tehran University of Medical Sciences, Tehran, Iran