Effects of Tellurium Oxide (TeO2) Particles on the Thermal Conductivity, Hardness, and Roughness of Maxillofacial Silicone Elastomers

Mays H.  Hasan; Abdalbseet A  Fatalla

doi:10.18502/fbt.v11i4.16507

Mays H. Hasan Department of Prosthodontic, College of Dentistry, University of Baghdad, Bab Al-Muadham, 1417, Baghdad, Iraq
Abdalbseet A Fatalla Department of Prosthodontic, College of Dentistry, University of Baghdad, Bab Al-Muadham, 1417, Baghdad, Iraq

DOI: https://doi.org/10.18502/fbt.v11i4.16507

Keywords: Tellurium Oxide; Silicone Elastomer; Room-Temperature Vulcanizing; VerSilTal 50; Thermal Conductivity; Physical Properties

Abstract

Purpose: The purpose of this research was to evaluate how different concentrations of TeO₂ filler particles influence the thermal conductivity, hardness, and surface roughness of room-temperature-vulcanizing VerSiltal 50 silicone elastomeric materials.

Materials and Methods: A total of 90 samples were prepared by varying the weight percentages of TeO₂ powder (0, 3, and 5 wt. %). Thirty samples from each group were used in the analysis. Two experimental groups with 3 and 5 wt. % of TeO₂ fillers were prepared and subjected to thermal conductivity, surface hardness, and surface roughness tests. The data were analyzed using descriptive statistics and analysis of variance with multiple comparison tests, and a P value < 0.05 indicated significance.

Results: Thermal conductivity and hardness improved as the percentage of TeO₂ increased from 3 wt. % to 5 wt. %, compared with those in the control group, whereas surface roughness decreased.

Conclusion: The means for thermal conductivity and surface hardness of the 3 and 5 wt. % TeO₂ experimental groups increased significantly relative to those in the control group.