DENTAL COMPOSITIONS COMPRISING NANOPARTICLES PROVIDING A REFRACTIVE INDEX DIFFERENTIAL BETWEEN POLYMERIZABLE RESIN AND FILLER

DENTAL COMPOSITIONS COMPRISING NANOPARTICLES PROVIDING A REFRACTIVE INDEX DIFFERENTIAL BETWEEN POLYMERIZABLE RESIN AND FILLER

Dental compositions and methods of formulating a dental composition are described. In one embodiment, the dental composition comprises a polymerizable resin comprising one or more ethylenically unsaturated monomers or oligomers and nanoparticles. The nanoparticles have a refractive index of at least...

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Bibliographische Detailangaben
Hauptverfasser: Craig, Bradley D, Dede, Karsten, Abuelyaman, Ahmed S, Thalacker, Christoph H, Dunbar, Timothy D, Eckert, Adrian S, Homnick, Paul J, Kobussen, Gregory A
Format: Patent
Sprache:eng
Schlagworte:
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Beschreibung
Zusammenfassung:Dental compositions and methods of formulating a dental composition are described. In one embodiment, the dental composition comprises a polymerizable resin comprising one or more ethylenically unsaturated monomers or oligomers and nanoparticles. The nanoparticles have a refractive index of at least 1.600 and an average discrete or aggregate particle size of no greater than 100 nm. The dental composition further comprises inorganic metal oxide filler having a discrete or aggregate average particle size of at least 200 nm. The nanoparticles are present at a concentration to provide a refractive index differential between the cured polymerizable resin and inorganic metal oxide filler such that the contrast ratio of the dental composition is at least 40.