Effect of Copper Dope Calcium Phosphate on Mechanical Properties of Modified Dental Composites

Abstract

Objective: To evaluate the mechanical, biological, and antibacterial properties of copper doped calcium
phosphate (Cu-CaP) modified dental composites.
Study Design: Cross-sectional study.
Place and Duration of Study: The study was carried out at the Department of Dental Materials, Khyber Medical
University Peshawar, Pakistan from February 2023 to January 2024.
Methods: The process involved adding ethyl alcohol, distilled water, silane, and octyltriethoxysilane to
powdered silica, refluxing, centrifuging, washing, and preparing copper oxide nanoparticles and copper doped
calcium phosphate. Composite was prepared using TEGDMA i.e. Triethylene glycol dimethacrylate, camphor
quinone, and dimethyl aminoethyl methacrylate.
Results: The microscopic image of Copper oxide nanoparticles were gathered together with agglomerated
structure, irregular shapes having voids, and size range of 80 nm to 5 μm. The shape was irregular with void
spaces and composition was confirmed with Edx analysis. Scanning electron microscope image of copper
doped calcium phosphate, shows a build-up of nanometric needles over entire base, with asymmetrical form
and translucent appearance, ranging from 10 nm to 50 nm. The Energy dispersive X-ray (EDX) analysis
demonstrated the presence of materials. The Fourier transmitted infrared microscopy of silica and salinized
silica showed characteristics peaks of salinized silica at 1016 cm-¹ and 1439 cm-¹ with a main peak at 950 cm-¹,
while the Fourier Transform Infrared Spectroscopy of calcium phosphate, 2%, 4%, and 6% copper doped
calcium phosphate in dental composite showed charcateristics peak at 1020 cm-¹ which was due to increase of
phosphates upon increasing copper doped calcium phosphate concentration. The compressive strength results
of native dental composite and 2%, 4%, and 6% copper doped calcium phosphate in dental composite have
values of 15.6 MPa, 18.72 MPa, 20.2 MPa, 49.15MPa while the flexural strength were of value 19.32MPa
(dental composite) and that of 2%,4% and 6% have a value of 22.2MPa, 26.1MPa and 30.3MPa. The control
group i.e. the dental composite had Vickers hardness of 14.55 MPa, while the experimental groups with 2% ,
4%, and 6% copper doped calcium phosphate had values of 16.97 MPa, 21.49 MPa and 26.5 MPa respectively.
Conclusion: The Vickers's hardness, flexural strength, and compressive strength of experimental dental
composite increased with an increasing percentage of copper doped calcium phosphate added as a filler in a
proportion of 2%, 4% and 6% with salinized silica in the dental composite.

How to cite this: Ahmad W, Ahmad F, Babar BZ, Khan A, Khalid S, Ahmad SA. Effect of Copper Dope Calcium Phosphate on Mechanical Properties of Modified Dental Composites. Life and Science. 2024; 5(4): 530-537. doi: http://doi.org/10.37185/LnS.1.1.679