Biocompatible, low modulus dental devices
First Claim
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1. A low modulus, corrosion resistant dental implant, said implant comprising:
- an implant body shaped for implantation beneath gingival tissue of a mouth, cooperation with a jaw bone, and stable fixation relative to said jaw bone, the implant body made of a predominantly alpha-prime hexagonal close packed titanium alloy comprising;
titanium;
from about 10 to about 20 wt. % as the sum of metals selected from the group consisting of niobium and tantalum; and
up to 50 wt. % zirconium,wherein the alloy is free from deliberately added toxic elements.
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Abstract
The invention provides dental devices (including implants, abutments, bridges, screws, and orthodontic appliances) that are fabricated from low modulus, biocompatible, non-toxic Ti-Nb-Zr alloys. The dental implants provide a biomaterial-to-bone interface that results in significant attachment between implant and bone. The implants may be supplied with a porous coating or macro-texture to further promote bone attachment and stabilization of the implant in the jaw bone. Other orthodontic appliances such as brackets and wires have improved elastic toughness and corrosion resistance so that they provide superior performance and corrosion characteristics.
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Citations
40 Claims
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1. A low modulus, corrosion resistant dental implant, said implant comprising:
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an implant body shaped for implantation beneath gingival tissue of a mouth, cooperation with a jaw bone, and stable fixation relative to said jaw bone, the implant body made of a predominantly alpha-prime hexagonal close packed titanium alloy comprising; titanium; from about 10 to about 20 wt. % as the sum of metals selected from the group consisting of niobium and tantalum; and up to 50 wt. % zirconium, wherein the alloy is free from deliberately added toxic elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A dental device adapted for exposure to corrosive fluids in a mouth of a human, said dental device made from a predominantly alpha-prime hexagonal close packed titanium alloy comprising:
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titanium; from about 10 to about 20 wt. % as the sum of metals selected from the group consisting of tantalum and niobium; and up to 50 wt. % zirconium; the dental device remaining in the mouth for a predetermined period of time without release of toxic ions into the mouth, the device having a low modulus of elasticity and wherein the alloy is free from deliberately added toxic elements. - View Dependent Claims (15, 16, 17, 37, 38, 39)
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18. A low modulus, corrosion resistant dental implant, said implant comprising:
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an implant body shaped for implantation beneath gingival tissue of a mouth, cooperation with a jaw bone, and stable fixation relative to said jaw bone, the implant body made of a predominantly alpha-prime hexagonal close packed titanium alloy comprising; titanium; from about 35 to about 50 wt. % as the sum of metals selected from the group consisting of niobium and tantalum; and up to 50 wt % zirconium. wherein the alloy is free from deliberately added toxic elements. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A dental device adapted for exposure to corrosive fluids in a mouth of a human, said device made from a predominantly alpha-prime hexagonal close packed titanium alloy comprising:
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titanium; from about 35 to about 50 wt. % as the sum of metals selected from the group consisting of tantalum and niobium; and up to 50 wt. % zirconium; the dental device remaining in the mouth for a predetermined period of time without release of toxic ions into the mouth, the device having a low modulus of elasticity and wherein the alloy is free from deliberately added toxic elements. - View Dependent Claims (32, 33, 34, 35, 36, 40)
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Specification