Publication: Análisis in vitro de la elasticidad y la flexión del Peek
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2018
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Abstract
El PEEK tiene varias aplicaciones en el ámbito de la odontología debido a su gran biocompatibilidad. No obstante, no se conoce de manera específica el comportamiento físico-mecánico de este material. Por ello, el objetivo de este estudio in vitro ha sido evaluar y comparar la resistencia a la flexión y el módulo de elasticidad de distintas muestras fabricadas a partir del PEEK. En este estudio, se fabricaron diez muestras de PEEK con unas dimensiones específicas (longitud x anchura x grosor) obteniendo así, dos grupos clasificados según el grosor/espesor de las muestras: un primer grupo con 5 muestras de 24x15x2 mm y otro grupo con 5 muestras de 24x15x15 mm. Seguidamente, todas las muestras fueron sometidas a una prueba de flexión de tres puntos en una máquina de prueba universal Zwick/Roell. Los resultados nos muestran que el primer grupo de probetas de PEEK con un espesor de 2 mm presenta valores más elevados de módulo de elasticidad y resistencia a la flexión en comparación con el grupo de probetas de 1,5 mm de grosor.
STATEMENT OF PROBLEM. Polyetheretherketone (PEEK) has several applications in dentistry. However, information about physico mechanical characterization is still scarce PURPOSE. The purpose of this in vitro study was to evaluate and compare the flexural strength and modulus of elasticity of different samples made with PEEK. MATERIAL AND METHODS. Ten specimens of PEEK with specific dimensions were fabricated (length x width x thickness) obtaining two groups of samples classified according to its thickness: a first group of 5 samples of 24x15x2 mm and a second group of 5 samples of 24x15x1,5 mm. After this, a Zwick/Roell universal testing machine was used to carry out the three-point bending flexural test. RESULTS. The results show us that the first group of PEEK samples with a 2 mm thickness present higher values of modulus of elasticity and resistance to bending in comparison to the group of 1,5 mm thickness samples.
STATEMENT OF PROBLEM. Polyetheretherketone (PEEK) has several applications in dentistry. However, information about physico mechanical characterization is still scarce PURPOSE. The purpose of this in vitro study was to evaluate and compare the flexural strength and modulus of elasticity of different samples made with PEEK. MATERIAL AND METHODS. Ten specimens of PEEK with specific dimensions were fabricated (length x width x thickness) obtaining two groups of samples classified according to its thickness: a first group of 5 samples of 24x15x2 mm and a second group of 5 samples of 24x15x1,5 mm. After this, a Zwick/Roell universal testing machine was used to carry out the three-point bending flexural test. RESULTS. The results show us that the first group of PEEK samples with a 2 mm thickness present higher values of modulus of elasticity and resistance to bending in comparison to the group of 1,5 mm thickness samples.
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