Fixed hybrid dental attachment device and methods of using same
View Patent ↗A hybrid, detachable dental attachment device having a cap for securing a dental appliance, a ring, and an abutment to attachment to a tooth root or implant. Also described herein are methods of securing a dental appliance in a subject's mouth by means of the dental attachment device. Further described herein is a dental attachment device for immediate load on a provisional denture and then incorporated into the final restoration.
1. A dental attachment device, comprising:
a. a cap secured to or integral with a dental appliance, the cap having an open end with an inner cavity forming a concave annular wall having a central longitudinal axis;
b. an abutment comprising an attachment portion configured for attachment to a tooth root or implant and an upper portion, the upper portion having a convex outer surface in direct swivel engagement with the concave annular wall of the cap and a socket having an open end facing away from the attachment portion;
c. a one-piece removable ball positioned between the cap and the abutment and having a head portion configured for engagement in the socket, and a shaft extending from the head portion and having an upper end secured to the cap, wherein the removable ball has a central axis aligned with the central longitudinal axis of the cap and the head portion is configured for swivel engagement in the socket through a predetermined angle of divergence between the central longitudinal axis of the cap and a central longitudinal axis of the abutment during use of the dental appliance; and
d. the head portion having a raised annular edge that is retentively engaged in the socket of the abutment.
2. The device of claim 1 , further comprising a ring seated in the open end of the abutment and surrounding the head portion of the removable ball.
3. The device of claim 2 , wherein the ring comprises polyether ether ketone (PEEK).
4. The device of claim 2 , wherein the raised annular edge engages an inner surface of the ring.
5. The device of claim 1 , wherein opposing annular portions of the convex outer surface of the abutment and concave annular wall of the cap are in face to face, metal-to-metal engagement over the entire range of annular divergence between the cap and abutment and are configured to limit or prevent entry of oral fluids into the socket during use of the dental appliance.
6. A dental attachment device, comprising:
a. a cap for securing a dental appliance, the cap having an open end with an inner cavity forming a concave annular wall;
b. an abutment comprising an attachment portion configured for attachment to a tooth root or implant and an upper portion, the upper portion having a convex outer surface in direct swivel engagement with the concave annular wall of the cap, and a socket having an open end facing away from the attachment portion;
c. a ring seated in the socket of the abutment; and
d. a one-piece removable ball positioned between the cap and the abutment and having a head portion engaged with the ring and a shaft extending from the head portion and having an upper end secured to the cap, the head portion having a raised annular edge that is retentively engaged with the ring in the socket of the abutment.
7. The device of claim 6 , wherein the head portion of the removable ball comprises one or more edges.
8. The device of claim 7 wherein the one on more edge is a sharpened annular edge.
9. The device of claim 7 wherein the one on more edge comprises a plurality of raised edges.
10. The device of claim 6 wherein the retention force is sufficiently high so as to require that the device be removed by a dental professional using a tool.
11. The device of claim 6 wherein the ring is screwed into the abutment.
12. The device of claim 6 wherein the retention force is achieved by a combination of the forces resulting from the engagement of the head portion and the ring and by a metal-to-metal interface between a top of the abutment and the inner surface of the cap.
13. The device of claim 6 , wherein the head portion is partially spherical in shape.
14. A kit for assembling a dental attachment device, comprising;
a cap for securing a dental appliance, the cap having an open end with an inner cavity forming a concave annular wall;
an abutment comprising an attachment portion and an upper portion, wherein the attachment portion is configured for attachment to a tooth root or implant, the upper portion having a convex outer surface configured for face to face swivel engagement with the concave annular wall of the cap and a socket having an open end facing away from the attachment portion; and
a one-piece removable ball positional between the cap and the abutment and having a head portion configured for releasable engagement in the socket of the abutment, a shaft extending from the head portion and having an upper end secured to the cap, wherein the head portion has a raised annular edge that is retentively engaged in the socket.
15. The kit of claim 14 , further comprising a ring seated in the open end of the abutment and surrounding the head portion of the removable ball.
16. The kit of claim 15 , wherein the head portion comprises one or more barbs.
17. The kit of claim 14 , wherein the removable ball comprises a driving feature.