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

PeerJ

article

Shahab Ud Din¹  Osama Khattak²  Farooq Ahmad Chaudhary¹  Asfia Saeed³  Azhar Iqbal²  Jamaluddin Syed⁴  Alaa Ahmed Kensara⁵  Thani Alsharari⁶  Mohammed Mustafa⁷  Sherif Elsayed Sultan⁸  Mangala Patel⁹ 

[1] School of Dentistry ,(SOD), Shaheed Zulfiqar Ali Bhutto Medical University;Department of Restorative Dentistry, Jouf University;Shifa College of Dentistry, Shifa Tameer-e-Millat University;Oral Basic Clinical Sciences Department, Faculty of Dentistry, King AbdulAziz University;Department of Oral and Maxillofacial Prosthodontics, King Abdul Aziz University Dental Hospital;Department of Restorative and Dental Science, Faculty of Dentistry, Taif University;Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University;Department of Fixed Prosthodontics, Tanta University;Centre for Oral Bioengineering ,(Dental Physical Sciences Unit), Bart’s and The London, School of Medicine and Dentistry, Queen Mary University of London

关键词: Elastic recovery;    Elastomers;    Hydrophilic vinyl polysiloxane;    Impression materials;    Strain-in-compressions;   

DOI  :  10.7717/peerj.15677

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

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 post-hoc (HSD) test were used for statistical analysis and a p-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).

【 授权许可】

CC BY