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Development and evaluation of radiopaque light cure composite.
A Valiathan1, V K Krishnan, M Mohanty
1Department of Orthodontics and Dento facial Orthopedics, College of Dental Surgery, Manipal 576119, Karnataka, India. info@mahe.ernet.in
Biomedical Sciences Instrumentation
|January 6, 2001
Summary
A new radiopaque light-cure dental composite was developed to improve visibility on X-rays. Testing shows enhanced physical properties and non-toxicity, paving the way for clinical trials and potential commercialization.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
Background:
- Previous dental composites faced limitations like insufficient shelf life or radiolucency, hindering clinical application.
- A radiolucent light-cure composite lacked visibility on X-rays, complicating post-treatment assessment.
Purpose of the Study:
- To develop and evaluate a novel radiopaque light-cure dental composite.
- To assess its physicochemical properties, toxicity, and suitability for in-vivo studies.
Main Methods:
- Incorporation of radiopaque glass particle filler (0.7-1.0 micron) at 200-250 phr into a light-cure composite matrix.
- Evaluation of compressive strength, diametral strength, and microhardness.
- Toxicological assessments and in-vivo studies in dogs, including histopathological analysis of dental tissues.
Main Results:
- The radiopaque composite demonstrated improved compressive strength, diametral strength, and microhardness compared to conventional composites.
- The material proved to be non-toxic and suitable for animal studies.
- Ongoing in-vivo studies in dogs are evaluating pulp and dentin responses.
Conclusions:
- The developed radiopaque light-cure composite exhibits promising physical properties and safety profiles.
- Further clinical trials are required before commercial production can be recommended.