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Effect of Nanoparticles Reinforcement on Mechanical Properties of Polycarbonate Resin - A Systematic Review and
Ahila Singaravel Chidambaranathan1, Gopichander Naveen
1Department of Prosthodontics, SRM Dental College, Bharathi Salai, Ramapuram Campus, SRM Institute of Science and Technology, Chennai, Tamil Nadu, India.
Introduction:
Incorporation of nanoparticles but to the polymers may improve the mechanical properties. This systematic review aimed to analyze the effect of nanoparticles reinforcement on mechanical properties of non-metallic clasp retained denture polycarbonate resin. The systematic review followed PRISMA guidelines and the population, intervention, comparison, outcome (PICO) question was 'What is the effect of nanoparticles reinforcement on flexural strength, impact strength, tensile strength, and surface hardness of polycarbonate resin?''.
Data Sources:
The published literatures were searched in Google scholar, PubMed, Scopus, Embase, Web of Science, Cochrane, Science Direct and ProQuest till 31 December 2024. Risk of bias analysis was done using Joanna Briggs Institute critical for non-randomized experimental studies and the meta-analysis was conducted using Newcastle Ottawa Scale. After applying the selection criteria, 22 in vitro studies were thoroughly assessed.
Selected Studies:
Published literature from eleven in-vitro studies were eligible for systematic review and three studies were eligible for meta-analysis.
Study Inferences:
There was an insignificant difference in surface hardness and significant difference found in flexural strength, impact strength, tensile strength after nanoparticle reinforcement ( P = 0.24; MD: 1.75; 95% confidence interval -4.62-8.15; I2 = 100%, P < 0.00001), impact strength ( P = 0.06; MD: 2.22; 95% confidence interval -2.89-7.32; I2 = 99%, P < 0.00001), tensile strength ( P = 0.20; MD: 3.63; 95% confidence interval -8.85-16.11; I2 = 100%, P < 0.00001), surface roughness ( P = 0.27; MD: 1.22; 95% confidence interval -1.43-3.86; I2 = 0%, P > 0.0001).
Conclusion:
The literature based evidenced showed that nanoparticle reinforcement showed changes in flexural strength, impact strength and tensile strength of polycarbonate resin.
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