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Properties of eight methacrylated beta-cyclodextrin composite formulations
Latiff A Hussain1, Sabine H Dickens, Rafael L Bowen
1Paffenbarger Research Center, American Dental Association Foundation, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8546, Gaithersburg, MD 20899, USA. latiff.hussain@nist.gov
Summary
Methacrylated beta-cyclodextrins (MCDs) show promise as dental monomers, offering mechanical properties comparable to traditional materials. Further development of these novel cyclodextrin derivatives is supported by promising flexural strength and volumetric shrinkage results.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biomaterials Engineering
Background:
- Novel dental monomers are continuously sought to improve composite material performance.
- Methacrylated beta-cyclodextrins (MCDs) represent a new class of potential dental monomers derived from beta-cyclodextrin.
Purpose of the Study:
- To evaluate the mechanical properties of dental composite formulations incorporating MCDs as comonomers.
- Key properties assessed include flexural strength (FS), volumetric shrinkage (VS), and degree of conversion (DC).
Main Methods:
- Composite formulations were prepared by mixing 50% MCD monomers with 50% diluent comonomers (dimethacrylates or monomethacrylates).
- Standard Bis-GMA/triethyleneglycol dimethacrylate mixtures served as controls.
- Mechanical properties (FS, VS, DC) were measured using standardized testing methods (Instron, mercury dilatometer, near-infrared spectroscopy).
Main Results:
- The performance of MCD-based composites was influenced by the choice of diluent monomer.
- Composites utilizing triethyleneglycol dimethacrylate, 1,10-decamethylenediol dimethacrylate, or benzyl methacrylate as diluents exhibited superior properties.
- Specific property values were dependent on the diluent used.
Conclusions:
- MCD-based composite formulations, particularly those with specific diluents, demonstrated flexural strength and volumetric shrinkage comparable to conventional dental resin controls.
- These findings suggest that polymerizable cyclodextrin derivatives are viable candidates for future dental material development.
- Further optimization and evaluation are recommended for MCD-based dental materials.