Dental compositions with natural tooth fluorescence
Assignee3M Innovative Properties Company
InventorsBradley D. Craig, Gregory A. Kobussen
Life of this patent
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Abstract
The invention features a dental composition containing a polycyclic aromatic compound, such as 2-ethyl 9,10-dimethoxy anthracene (EDMOA), in an amount that provides the composition with fluorescence mimicking that of natural teeth.
Claims19
A hardenable dental composition comprising a polycyclic aromatic component, wherein the composition upon hardening has natural tooth fluorescence, and wherein the polycyclic aromatic component is present in an amount less than 0.01 wt-% of the composition.
A hardenable dental composition comprising a resin system and a filler system, wherein the resin system comprises:
- (a) a polymerizable component and
- (b) an initiator system comprising
- i. an primary electron donor component present in an amount of at least 0.5 wt-% of the resin system;
- and
- ii. a polycyclic aromatic component that is present in amount less than 0.5 wt-% of the resin system,
- wherein the polycyclic aromatic component is present in an amount less than 0.01 wt-% in the hardenable dental composition.
A method of making of dental composition having natural tooth fluorescence, the method comprising the steps of:
- (a) providing a dental resin system that, upon curing, provides a material that has a non-natural tooth fluorescence;
- and
- (b) adding a sufficient amount of a polycyclic aromatic component to the resin system to provide a composition that, upon curing, has a natural tooth fluorescence, wherein the polycyclic aromatic component is present in an amount less than 0.01 wt-% of the dental composition.
Dependencies are inferred from the claim text.