Efecto de un tratamiento experimental de una superficie sobre la resistencia flexural en una zirconia Y-TZP

B. C. Gómez; C. J. Cortés-Rodríguez; M. L. Calle

doi:10.17488/RMIB.38.3.4

Effect of an experimental surface treatment on Y-TZP zirconia flexural strength

Authors

B. C. Gómez Facultad de Odontología – Maestría en Odontología – Universidad Nacional de Colombia – Sede Bogotá – Grupo de Investigación en Biomecánica – GIBM – Colombia
C. J. Cortés-Rodríguez Departamento de Ingeniería – Mecánica y Mecatrónica – Universidad Nacional de Colombia – Sede Bogotá – Grupo de Investigación en Biomecánica – GIBM – Colombia
M. L. Calle Facultad de Odontología – Universidad Nacional de Colombia – Sede Bogotá – Colombia

DOI:

https://doi.org/10.17488/RMIB.38.3.4

Keywords:

zirconia, sandblasting, Y-TZP, phase Transformation, dental ceramics, dental stress analysis/methods, surface

Abstract

Objective: To analyze the effect of surface micro shot peening as an experimental regeneration treatment on the flexural strength and residual stresses of a Y-TZP Zirconia, once it has been altered with other mechanical treat-ments such as micro sandblasting and milling. Methods: A total of 75 Zirconia Y-TZP specimens were divided into five n = 15 groups and subjected to surface treatments such as: milling and micro sandblasting (Groups 2 and 4) micro sandblasting + micro shot peening; and milling + micro shot peening (Groups 3 and 5), compared to a control group (Group 1), by X-ray diffraction (XRD), scanning electron microscopy (SEM), confocal microscopy (CLSM) and subjected to failure in a universal testing machine. All the results were compared to find a statistical relationship be-tween them using a mixed linear model and Tuckey. Results: The groups of micro shot peening and micro sandblas-ting presented a significant increase of the flexural strength p = 0.0082 vs the milling group. The XRD technique is not related to flexural strength measurements. Significance: It is possible that the micro shot peening be considered a treatment to regenerate the mechanical properties reduced by milling or sandblasting in Zirconia Y-TZP.

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Published

2017-09-13

How to Cite

Gómez, B. C., Cortés-Rodríguez, C. J., & Calle, M. L. (2017). Effect of an experimental surface treatment on Y-TZP zirconia flexural strength. Revista Mexicana De Ingenieria Biomedica, 38(3), 547–562. https://doi.org/10.17488/RMIB.38.3.4

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Issue

Vol. 38 No. 3 (2017)

Section

Research Articles

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