Comparative study of the modulus of elasticity presented by carbon fiber compared to PEEK (polyetheretherketone) as materials for the manufacture of implant-supported substructures

Abstract

Evaluate by flexural tests the modulus of elasticity of carbon fiber and PEEK at 2 mm and 1.5 mm of thickness. 20 test bodies obtained from 1 carbon fiber disc (CarbonCad 3D, DEI Itália) and 1 PEEK disc (TecnoMed Mineral 95H12, Zirkonzahn) of 2 mm and 1.5 mm thickness, were subdivided into 4 groups (n: 5) and evaluated by means of a three-point bending test to determine the modulus of elasticity of each material, the values obtained were expressed in Gpa and analyzed using a T student, ANOVA and Tukey. The descriptive statistic determined that group 2 presents a mean of 19.11 Gpa, and group 3 an average of 5.31 Gpa concerning the elastic modulus. The analyzes carried out consider the variables length, width, thickness and type of material determined a significant difference between the average of the modulus of elasticity of the carbon fiber at 1.5 mm shows a significant difference with the other groups (p = 0.02). Carbon fiber has a higher modulus of elasticity than PEEK, where at a thickness of 1.5 mm it showed the best results.