Ministry of Higher Education and Scientific Research, Al-Iraqia University, College of Dentistry, Baghdad Province, Iraq
The aim of this study is to evaluate the effect of addition of different weight concentration of polyamide (nylon 6) PA-6 micro powder on impact strength, transverse strength, surface hardness, surface roughness of heat cured acrylic resin denture base material (PMMA).
Polyamide-nylon 6 (PA-6) micro powder with average particle size of 15–20 micron (Good fellow Cambridge limited, England) will be added to heat-curing denture base material in a concentration of (0%, 1%, 3%, 5%). (160) specimen will be fabricated, (40) for the control group and (120) specimens for different polyamide powder percentage groups.
The mechanical test examined in the Pilot study are (transverse strength, impact strength, surface roughness and surface hardness).
By using Polyamide-nylon 6 (PA-6) micro powder with average particle size of 15–20 micron added to heat-curing denture base material in a concentration of (0%, 1%, 3%, 5%).
The mean value of tear and tensile strength of 1% PA-6 reinforcement group increased significantly when compared to control group on the contrast to the same values of 3% and 5% PA-6 reinforcement groups which were decreased significantly.
Polyamide denture material produce high resistance to breakage, its modulus is not yet high in a sufficient manner to become equal to the standard of materials of PMMA Laboratory effects, Polyamide gets certain Exciting benefits, but it needs to have their properties improved better than the present PMMA materials properties.
The patient wearing the denture suffering from fracture of denture due to several causes. So, adding the (Nylone 6) with PMMA to produce denture base with high resistance to breakage.
Denture base materials, mechanical properties, polyamide, Poly methyl methacrylate
