Claims
- 1. A method of making a polymeric dental product, having a substantially monotonic decrease in lightness value between layers from a most opaque layer underlying to a less opaque layer positioned beneath a least opaque layer, comprising:
- providing a first material enclosed by a first labeled container and having a first opacity (O.sub.1), and a first lightness value (L.sub.1) when formed into said least opaque layer, a second material enclosed by a second labeled container having a second opacity (O.sub.2) and a second lightness value (L.sub.2) when formed into said less opaque layer, and a third material enclosed by a third labeled container having a third opacity (O.sub.3) and a third lightness value (L.sub.3) when formed into said most opaque layer,
- said least opaque, more opaque and most opaque layers each not being thicker than 1.5 mm,
- said third opacity (O.sub.3) being greater than said second opacity (O.sub.2), said second opacity (O2) being greater than said first opacity (O.sub.1),
- said third lightness value (L.sub.3) being greater than said second lightness value (L.sub.2) and said second lightness value (L.sub.2) being greater than said first lightness value (L.sub.1),
- forming said third material into said most opaque layer on a substrate, forming said second material into said less opaque layer on said most opaque layer, forming said first material into said least opaque layer on said less opaque layer.
- 2. The method of claim 1 wherein said third opacity (O.sub.3) is 100 percent opaque.
- 3. The method of claim 2 wherein said second opacity (O.sub.2) is from 94 percent to 99 percent opaque.
- 4. The method of claim 1 wherein said third lightness value (L.sub.3) and said first lightness value (L.sub.1) have a difference in lightness value of less than 10 Commission International de l'E'clairage (CIE) L*a*b* units.
- 5. The method of claim 1 further comprising hardening said first material, hardening said second material, and hardening said third material.
- 6. The method of claim 1 wherein said first material comprises polymerizable material, said second material comprises polymerizable material, and said third material comprises polymerizable material.
- 7. The method of claim 1 wherein said first material comprises a photoinitiator, said second material comprises a photoinitiator, and said third material comprises a photoinitiator.
- 8. The method of claim 1 wherein said first material comprises a photoinitiator and a polymerizable material said second material comprises a photoinitiator and a polymerizable material, and said third material comprises a photoinitiator and a polymerizable material.
- 9. The method of claim 1 wherein said first material is a liquid, paste or powder, said second material is a liquid, paste or powder, and said third material is a liquid, paste or powder.
- 10. The method of claim 1 wherein said first material further comprises a polymerizable material and further comprising polymerizing said polymerizable material in said first material to form first polymeric material.
- 11. The method of claim 1 wherein said second material further comprises a polymerizable material and further comprising polymerizing said polymerizable material in said second material to form second polymeric material.
- 12. The method of claim 1 wherein said third material further comprises a polymerizable material and further comprising polymerizing said polymerizable material in said third material to form third polymeric material.
- 13. A kit for making a dental composite, having a substantially monotonic change in lightness value between layers for a most opaque layer underlying a less opaque layer positioned beneath a least opaque layer, comprising:
- a first polymerizable material, said first polymerizable material comprising a polymerizable compound, said first polymerizable material being enclosed by a first labeled container and having a first opacity (O.sub.1), and a first lightness value (L.sub.1) when formed into said least opaque layer, a second material enclosed by a second labeled container having a second opacity (O.sub.2) and a second lightness value (L.sub.2) when formed into said less opaque layer, and a third material enclosed by a third labeled container having a third opacity (O.sub.3) and a third lightness value (L.sub.3) when formed into said most opaque layer, said least opaque, more opaque and most opaque layers each not being thicker than 1.5 mm,
- said third opacity (O.sub.3) being greater than said second opacity (O.sub.2), said second opacity (O.sub.2) being greater than said first opacity (O.sub.1),
- said third lightness value (L.sub.3) being greater than said second lightness value (L.sub.2) and said second lightness value (L.sub.2) being greater than said first lightness value (L.sub.1).
- 14. The kit of claim 13 wherein said second material is a polymerizable material having at least one polymerizable compound and said third material is a polymerizable material having at least one polymerizable compound.
- 15. The kit of claim 13 wherein said first material is a polymerizable paste having at least one polymerizable compound, said second material is a polymerizable paste having at least one polymerizable compound and said third material is a polymerizable paste having at least one polymerizable compound.
- 16. The kit of claim 13 wherein said first material is a polymerizable powder having at least one polymerizable compound, said second material is a polymerizable powder having at least one polymerizable compound and said third material is a polymerizable powder having at least one polymerizable compound.
- 17. A method of making a dental product having substantially no change in hue from a most opaque layer to the least opaque layer and a monotonic decrease in lightness value between layers from a most opaque layer to a less opaque layer positioned beneath a least opaque layer, the most opaque layer underlying the less opaque layer comprising:
- providing a first material enclosed by a first labeled container and having a first opacity (O.sub.1), and a first hue (H.sub.1) when formed into said least opaque layer, a second material enclosed by a second labeled container having a second opacity (O.sub.2) and a second hue (H.sub.2) when formed into said less opaque layer, and a third material enclosed by a third labeled container having a third opacity (O.sub.3) and a third hue (H.sub.3) when formed into said most opaque layer, said least opaque, more opaque and most opaque layers each not being thicker than 1.5 mm,
- said third opacity (O.sub.3) being greater than said second opacity (O.sub.2) said second opacity (O.sub.2) being greater than said first opacity (O.sub.1),
- said third hue (H.sub.3) being greater than said second hue (H.sub.2) and said second hue (H.sub.2) being greater than said first hue (H.sub.1),
- forming said third material into said most opaque layer on a substrate, forming said second material into said less opaque layer on said most opaque layer, forming said first material into said least opaque layer on said less opaque layer.
- 18. The method of claim 17 wherein said third opacity (O.sub.3) is 100 percent opaque.
- 19. The method of claim 18 wherein said second opacity (O.sub.2) is from 94 percent to 99 percent opaque.
- 20. The method of claim 17 wherein said third lightness value (L.sub.3) and said first lightness value (L.sub.1) have a difference in lightness value of less than 10 Commission International de l'E'clairage (CIE) L*a*b* units.
- 21. The method of claim 17 further comprising hardening said first material, said second material, and said third material.
- 22. The method of claim 17 wherein said first material comprises polymerizable material, said second material comprises polymerizable material, and said third material comprises polymerizable material.
- 23. The method of claim 17 wherein said first material comprises a photoinitiator, said second material comprises a photoinitiator, and said third material comprises a photoinitiator.
- 24. The method of claim 17 wherein said first material comprises a photoinitiator and a polymerizable material, said second material comprises a photoinitiator and a polymerizable material, and said third material comprises a photoinitiator and a polymerizable material.
- 25. The method of claim 17 wherein said first material is a liquid, paste or powder, said second material is a liquid, paste or powder, and said third material is a liquid, paste or powder.
- 26. The method of claim 17 wherein said first material further comprises a first polymerizable material and polymerizing said first polymerizable material in said first material to form first polymeric material,
- said second material further comprises a second polymerizable material and polymerizing said second polymerizable material in said second material to form second polymeric material, and
- said third material further comprises a third polymerizable material and polymerizing said third polymerizable material in said third material to form third polymeric material.
Parent Case Info
This is a continuation-in-part of U.S. Ser. No. 08/456,151 filed May 31, 1995, now U.S. Pat. No. 5,685,717, incorporated herein by reference in its entirety, which is a division of U.S. Ser. No. 08/257,411, filed Jun. 9, 1994, now U.S. Pat. No. 5,482,732 incorporated herein by reference in its entirety.
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Divisions (1)
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Continuation in Parts (1)
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456151 |
May 1995 |
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