Fiber reinforced dental appliances and prostheses
A fabric ribbon for use in dental applications. The fabric ribbon includes a transverse set of fibers aligned generally transverse to a length of the ribbon; and a axial set of fibers, intertwined around the transverse set of fibers and aligned generally axially along the length of the ribbon, each of the axial set of fibers having a thickness greater than a thickness of each of the transverse set of fibers. The fabric ribbon may be used for a dental appliance, for example in a periodontal splint, a pontic beam, a composite restoration, or to bridge a crack in teeth.
1. A dental appliance, comprising:
a fabric ribbon configured for dental purposes and for use in a reinforced plastic composite, comprising:
a transverse set of fibers aligned generally transverse to a length of the ribbon, wherein the length of the ribbon corresponds to a dimension of the ribbon in a direction along which the ribbon carries a greatest tensile load; and
an axial set of fibers, intertwined around the transverse set of fibers and aligned generally axially along the length of the ribbon, each of the fibers in the axial set of fibers having a thickness greater than a thickness of each of the fibers in the transverse set of fibers;
wherein the transverse set of fibers comprises at least a first transverse fiber and a second transverse fiber that are adjacent to one another along the length of the ribbon, wherein the axial set of fibers is intertwined around the transverse set of fibers such that the first transverse fiber and the second transverse fiber are separated from one another by at least one fiber from the axial set of fibers and such that a first thickness of the ribbon at the first transverse fiber is equal to a second thickness of the ribbon at the second transverse fiber.
2. The dental appliance of claim 1 , further comprising a resin matrix applied to the fabric ribbon.
3. The dental appliance of claim 1 , wherein the ribbon is a leno weave fabric.
4. The dental appliance of claim 3 , wherein the transverse set of fibers comprises filler or weft fibers for the leno weave fabric and the axial set of fibers comprises warp fibers for the leno weave fabric.
5. The dental appliance of claim 3 , wherein a ratio of the diameter of the fibers in the axial set of fibers to the diameter of the fibers in the transverse set of fibers is at least 1.1 to 1.
6. The dental appliance of claim 3 , wherein a ratio of the diameter of the fibers in the axial set of fibers to the diameter of the fibers in the transverse set of fibers is at least greater than or equal to 2 to 1.
7. The dental appliance of claim 3 , wherein a ratio of the diameter of the fibers in the axial set of fibers to the diameter of the fibers in the transverse set of fibers is at least greater than or equal to 6 to 1.
8. The dental appliance of claim 1 , wherein each of the fibers in the axial set of fibers has a first thickness greater than a second thickness of each of the fibers in the transverse set of fibers so that each of the fibers in the axial set of fibers is straighter and exhibits a stronger elastic performance characteristic in comparison to an arrangement in which the thickness of each of the fibers in the transverse set of fibers is greater than the second thickness.
9. The dental appliance of claim 8 , wherein the fabric ribbon is configured to conform against a substrate along the length of the ribbon, and wherein each of the fibers in the axial set of fibers has the first thickness greater than the second thickness of each of the fibers in the transverse set of fibers so that an outside of the fibers in the axial set of fibers has a larger amount of surface area for contacting the substrate when conforming against the substrate in comparison to an arrangement in which the thickness of each of the fibers in the transverse set of fibers is greater than the second thickness.
10. The dental appliance of claim 9 , further comprising a resin matrix applied to the fabric ribbon for attaching the fabric ribbon to the substrate, wherein each of the fibers in the axial set of fibers has the first thickness greater than the second thickness of each of the fibers in the transverse set of fibers so that an outside of the fibers in the axial set of fibers forms a smaller volume for receiving the resin matrix between the outside of the axial fibers and the substrate during attachment to the substrate in comparison to an arrangement in which the thickness of each of the fibers in the transverse set of fibers is greater than the second thickness.
11. The dental appliance of claim 1 , wherein the ribbon is a plain weave fabric.
12. The dental appliance of claim 1 , wherein the ribbon is a triaxial braided fabric.