Sudying the effect of adding Titanium Dioxide (TiO2) nanoparticles on the compressive strength of chemical and heat-activated acrylic denture base resins
الباحث الأول:
Wasnaa M. Abdulridha
الباحثين الآخرين:
Rajaa M. Almusawi , Ola M. Al-Jubouri , Zena J. Wally , Saleh Zidan , Julfikar Haider & Nibrass T. Al-Quraine
المجلة:
Advances in Materials and Processing Technologies
تاريخ النشر:
29 أكتوبر، 2020
مختصر البحث:
The commonly used acrylic resins for fabricating denture base suffer
from poor mechanical properties. This study aimed to assess the effect
of incorporating Titanium Dioxide (TiO2) nanoparticles (NPs) as
a reinforcement agent on the compressive s…
The commonly used acrylic resins for fabricating denture base suffer
from poor mechanical properties. This study aimed to assess the effect
of incorporating Titanium Dioxide (TiO2) nanoparticles (NPs) as
a reinforcement agent on the compressive strength of different acrylic
denture base materials. Thirty-two cylindrical specimens (22 mm in
height and 12 mm in diameter) were prepared from PMMA resins with
and without TiO2 NPs. They were allocated into two main groups
according to the materials used such as cold cure and heat cure
denture base resins and then divided into two subgroups each containing
eight specimens: control (without nanoparticles) and experimental
(with 2 wt.% TiO2 NPs). TiO2 NPs were synthesised via a chemical
processing route. Particle morphology and size distribution were
assessed using SEM and AFM while XRD technique was employed to
determine the crystalline structure of the NPs. Compression test was
performed on the specimens using a universal Instron testing machine
to compare the compressive strength. Size of crystalline TiO2 NPs varied
between 40 and 80 nm. The mean compressive strength for the cold
cure acrylic resin (control group) and its nanocomposite (experimental
group) were found to be 15.37 MPa and 17.42 MPa while for the heat
cure acrylic resin and its nanocomposite were 23.04 MPa and 24.30
MPa. A statistically significant difference was recorded between the
compressive strengths of cold cure acrylic resin and its nanocomposite.
However, the difference was non-significant in the case of heat cure
acrylic resin. The compressive strengths of both cold cure and heat cure
acrylic resins increased after the incorporation TiO2 NPs.
