Comparison of the elastic recovery and strain-in-compression of commercial and novel vinyl polysiloxane impression materials incorporating a novel crosslinking agent and a surfactant

• Published in: PeerJ (San Francisco, CA) CA), 2023-07, Vol.11, p.e15677-e15677, Article e15677
• Main Authors: Ud Din, Shahab, Khattak, Osama, Chaudhary, Farooq Ahmad, Saeed, Asfia, Iqbal, Azhar, Syed, Jamaluddin, Kensara, Alaa Ahmed, Alsharari, Thani, Mustafa, Mohammed, Sultan, Sherif Elsayed, Patel, Mangala
• Format: Article
• Language: English
• Subjects: Analysis; Biochemistry; Bioengineering; Biophysics; Crosslinked polymers; Dentistry; Elastic recovery; Elastomers; Hydrophilic vinyl polysiloxane; Impression materials; Siloxanes; Strain-in-compressions; Surface active agents
• ISSN: 2167-8359; 2167-8359
• DOI: 10.7717/peerj.15677

This study aims to formulate experimental vinylpolysiloxane (VPS) impression materials and compare their elastic recovery and strain-in-compressions with three commercial VPS materials (Aquasil, Elite, and Extrude). Five experimental materials (Exp), two hydrophobic (Exp-I and II) and three hydrophilic (Exp-III, IV and V) were developed. Exp 1 contained vinyl-terminated poly-dimethyl siloxane and a conventional cross-linking agent (poly methylhydrosiloxane), while Exp- II contained a novel cross-linking agent that is tetra-functional dimethyl-silyl-ortho-silicate (TFDMSOS). Exp III-V (hydrophilic materials) were formulated by incorporating different concentrations of non-ionic surfactant (Rhodasurf CET-2) into Exp II formulation. Measurement of elastic recovery and strain-in-compression for commercial and experimental materials were performed according to ISO4823 standard using the calibrated mechanical testing machine (Tinius Olsen). One-way analysis of variance (one-way ANOVA) and Tukey's (HSD) test were used for statistical analysis and a -value of ≤ 0.05 was considered significant. Exp-I has statistically similar values to commercial VPS. The Exp-II showed the highest elastic recovery, while % elastic recovery was reduced with the addition of the non-ionic surfactant (Rhodasurf CET-2). The % reduction was directly related to the concentration of Rhodasurf CET-2. In addition, Exp II had significantly higher strain-in-compression values compared to Exp-I and commercial materials. These values were further increased with the addition of a non-ionic surfactant (Rhodasurf CET-2) was added (Exp-III, IV and V).