Effects of the Addition of Untreated and Oxygen Plasma Treated Polyamide fibers on Tear strength and Surface roughness of Room Temperature Vulcanized Maxillofacial Silicon Elastomers (Pilot Study) Hamdi Mustafa Sabah Ahmed, Fatalla Abdalbseet A* Department of Prosthodontics, College of Dentistry, University of Baghdad *Corresponding Author E-mail: abdalbasit@codental.uobaghdad.edu.iq
Online published on 24 December, 2019. Abstract Objective Restoration of maxillofacial defect is comprehensive process, variety of materials have been used but none of them have, the aim of the study effect of reinforcement of VST-50F (RTV) maxillofacial silicone elastomer with (2mm) polyamide fibers before and after oxygen plasma treatment on tear strength and surface roughness. Materials and Methods Seventy specimens have been prepared and divided into two groups (35) for the conducted test: tear strength and surface roughness, each group then subdivided into four subgroups according to the concentration of the fibers (0%, 0.5%, 1%, 1.5%) where n= 5. Results The samples were tested and the data were analyzed with a descriptive statistical analysis, one-way ANOVA, post-hoc tests (Bonferroni, Games-Howell). results showed significant increase of tear strength with 1.5% plasma treated PA-6 fibers and significant increase of surface roughness with both types of fibers and all concentration. Conclusion We conclude for that 1% and 1.5% plasma treated PA-6 fibers with (2mm) length can improve the mechanical properties and proceed for the main study. Top Keywords Maxillofacial Defect, polyamide Fibers, Oxygen Plasma, Surface Roughness. Top |