Aesthetic dental materials
Assignee3M Innovative Properties Company
InventorsDong Wu, Brian N. Holmes, Brant U. Kolb, Sumita B. Mitra, Wendy L. Thompson
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Abstract
The invention provides for a material comprising(a) a hardenable resin; and (b) a filler comprising (i) clusters of nano-sized particles, the clusters comprising non-beavy metal oxide particles and heavy metal oxides, and being not fully densified particles and (ii) non-agglomerated nano-sized particles selected from the group consisting of non-heavy metal oxide particles, heavy metal oxide particles, and combinations thereof. The material is suitable for use as dental materials.
Claims25
A material comprising:
- (a) a hardenable resin;
- and
- (b) a filler comprising (i) clusters of nano-sized particles, said clusters comprising non-heavy metal oxide particles and heavy metal oxides and being not fully densified and (ii) non-agglomerated nano-sized particles selected from the group consisting of non-heavy metal oxide particles, heavy metal oxide particles, and combinations thereof,
- wherein said material is a dental material.
A method of making a dental material comprising:
- providing a hardenable resin;
- providing a filler comprising (i) clusters of nano-sized particles, said clusters comprising non-heavy metal oxide particles and heavy metal oxides and being not fully densified and (ii) non-agglomerated nano-sized particles selected from the group consisting of non-heavy metal oxide particles, heavy metal oxide particles, and combinations thereof;
- surface treating said filler to yield surface-treated filler particles;
- and
- mixing said surface treated filler particles with said hardenable resin.
A method of using a dental material comprising:
- placing the material near or on a tooth surface;
- changing the topography of the material;
- and
- hardening the material, wherein the dental material comprises a hardenable resin and a filler comprising (i) clusters of nano-sized particles, said clusters comprising non-heavy metal oxide particles and heavy metal oxides and being not fully densified and (ii) non-agglomerated nano-sized particles selected from the group consisting of non-heavy metal oxide particles, heavy metal oxide particles, and combinations thereof.
A dental article preparable by a method comprising:
- hardening a dental material comprising a hardenable resin and a filler comprising (i) clusters of nano-sized particles, said clusters comprising non-heavy metal oxide particles and heavy metal oxides and being not fully densified and (ii) non-agglomerated nano-sized particles selected from the group consisting of non-heavy metal oxide particles, heavy metal oxide particles, and combinations thereof;
- and
- fabricating a dental article selected from the group consisting of dental mill blanks, dental prostheses, orthodontic devices, artificial crowns, anterior fillings, posterior fillings, and cavity liners.
Dependencies are inferred from the claim text.