Study the Mechanical Properties of Polymeric Blends (SR/PMMA) Using for Maxillofacial Prosthesis Application

S I Salih,J K Oleiwi,H M Ali

doi:10.1088/1757-899x/454/1/012086

Abstract

A number of prosthetic materials, it may be used to replace facial parts of maxillofacial that lost through disease or trauma. The silicone rubbers it is considered are the best materials in this area. So that, the aim of this research is to study the effect of addition of PMMA material on the mechanical properties of blends SR/PMMA at different loading level (5%, 10%, 15% and 20%) of PMMA to silicone rubber. FTIR test and some mechanical properties such as tensile strength, elastic modulus, elongation percentage, hardness, compression strength and roughness were done on the all prepared samples, which are used for maxillofacial prostheses applications. The results showed that the optimum percent of PMMA is 10% that has ideal characteristic. So, this sample may be a promising material to achieve the properties required for maxillofacial prosthetic applications.

Highlights

Maxillofacial prostheses are used to transform congenital, developmental, and acquired defects of the head and neck into natural appearing reproductions of the missing parts, providing an acceptable appearance and improved function
The absorption peaks at 1080 cm-1 and 1009.28 cm-1 are assigned to the stretching vibration of Si-O-Si on backbone of silicone rubbers
The Fourier transform infrared spectrometer (FTIR) spectra of polymers blend (SR: X% polymethyl methacrylate (PMMA)) with different ratios of PMMA (0, 5, 10, 15 and 20%) are shown in figure 2. It can be seen from the infrared spectrum of these group of polymeric blend specimens; these spectra is quite similar to the FTIR spectrum of silicone rubbers which shown in figure (1), no other new peak or peak shifts were observed for the polymeric blends of silicon rubber (SR)/PMMA specimens with the addition of PMMA

Summary

Introduction

Maxillofacial prostheses are used to transform congenital, developmental, and acquired defects of the head and neck into natural appearing reproductions of the missing parts, providing an acceptable appearance and improved function. Increasing numbers of maxillofacial patients with cancer, trauma or congenital diseases are requesting more comprehensive and high-quality prosthetic services. The main purpose of maxillofacial materials is to restore the function and form of defective and missing parts of the face, maxilla and mandible so that the psychological defects that result can be restored as well [3]. Auricular, nasal, and even ocular prosthesis fabricated with various materials, have been found in Egyptian Mummies. Chinese were known to fabricate nasal and auricular prosthesis using natural waxes, resins and metals usually gold or silver. Maxillofacial silicone elastomers have been widely used to fabricate facial prostheses for restoring the normal appearance of patients with maxillofacial defects [6]. Polymethylmethacrylate, polydimethylsiloxane and polyetherurethanes have been tested and used in meeting the demand for materials that will be biocompatible, durable, colour stable and manipulated [7]

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