Effect of Mixing Tip Size on the Porosity and Tensile Strength of Extra Light Body Polyvinyl Siloxane Impression Materials
Abstract
The aim of this study was to compare the tensile strength, porosity, and waste reduction of polyvinyl siloxane (PVS) impression material when using traditional mixing tips and cartridge versus a newly released system. This study used Dentsply Sirona Aquasil Ultra+ Smart Wetting XLV Regular Set PVS Impression Material with the Teal tip (TT) from the previous system, and the Red (RT) and Blue (BT) tips from the new system. Tensile strength was tested by stretching 48 dumbbell samples (n = 15RT, 16 BT, 17TT) in the universal testing machine and porosity was evaluated utilizing micro-CT analysis of cylindrical samples (n = 6RT, 7BT, 7TT). Waste reduction was evaluated by taking the weight of the mixing tips (n = 11 per tip) before use and after polymerization. A one-way ANOVA found no statistically significant difference in tensile strength (p = 0.493), while a statistically significant difference was found for the modulus of elasticity (p = 0.0001). The Tukey-Kramer HSD test showed the statistically significant difference in modulus of elasticity between TT-BT and TT-RT. A Shapiro-Wilk test found the porosity of BT was not normally distributed (p = 0.013).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2023
- Accession Number
- AD1222321
Entities
People
- Kaisha T. Calvin
Organizations
- Uniformed Services University of the Health Sciences