Formulation and evaluation of a hydrophobic composite plastic

Area of Science:

• Materials Science
• Polymer Chemistry
• Biomaterials

Background:

• Hydrophobic dental composites are crucial for durable restorations.
• Developing advanced composites with enhanced mechanical and wear properties is an ongoing research area.
• Existing composites face challenges in long-term stability and wear resistance.

Purpose of the Study:

• To synthesize and characterize a novel hydrophobic composite material.
• To evaluate the working, mechanical, wear, and physical properties of the experimental composite.
• To compare the performance of the new composite against commercially available dental materials.

Main Methods:

• Synthesized a hydrophobic co-polymer: heptafluorobutylmethacrylate co-para vinyl phenol.
• Compounded the co-polymer with ethylene glycol dimethacrylate and silanated quartz.
• Evaluated working properties, mechanical properties (including modulus of resilience), and wear resistance using two-body abrasion and track width versus normal load tests.
• Measured thermal coefficient of expansion and water sorption.

Main Results:

• The experimental composite exhibited satisfactory working properties.
• Mechanical properties were comparable to commercial composites, with a higher modulus of resilience.
• Wear resistance was equal to or greater than commercial composites, depending on the evaluation method.
• Thermal coefficient of expansion and water sorption were slightly higher than commercial composites.

Conclusions:

• The novel hydrophobic composite demonstrates promising mechanical and wear-resistant properties.
• Its higher modulus of resilience suggests potential for improved performance in dental applications.
• Further research may focus on optimizing thermal and water sorption characteristics for enhanced clinical longevity.