The Effect of Planetary Ball Milling Technique on Physical and Mechanical Properties of Reinforced Poly (Methyl Methacrylate) Denture Base

Jamal  Moammar Aldabib

doi:10.33214/a9rr3705

Authors

Jamal Moammar Aldabib Department of Dental Technology, Faculty of Medical Technology, Baniwaleed University, Bani Walid, Libya Author

DOI:

https://doi.org/10.33214/a9rr3705

Keywords:

Particle size, PMMA/HA, planetary ball milling technique, Denture base materials, Mixing time

Abstract

Bioceramics have great potential in biomedical applications. In the current study, hydroxyapatite (HA) was used as reinforcing filler for poly (methyl methacrylate) (PMMA) denture base material. The physical mixing of the powder components (PMMA and the filler) is strongly preferred to provide the required dispersion of the filler in the matrix. Therefore, the current study was conducted to investigate the effect of different mixing time using planetary ball milling technique (PBM) on the mechanical properties of PMMA/HA denture base composite. In this study, the powder components (PMMA and 15 wt% HA) was mixed for different times (i. e., 10, 20, 30 and 40 min) using PBM. The particles size and distribution of PMMA/HA mixtures as a function of different mixing times were studied using laser light scattering technique. The flexural and tensile tests were conducted to evaluate the mechanical performance. The scanning electron microscopy (SEM) was used to study both the powder mixtures and the fractured surface of the tested sample of PMMA/HA composite.

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