| 摘要 |
PCT No. PCT/CA96/00811 Sec. 371 Date Sep. 16, 1997 Sec. 102(e) Date Sep. 16, 1997 PCT Filed Dec. 4, 1996 PCT Pub. No. WO97/20517 PCT Pub. Date Jun. 12, 1997A resilient connecting structure for individually and resiliently connecting a dental prosthesis structure to a base component. The connecting structure is adapted to simulate the link provided by a natural periodontal ligament between a natural tooth and a natural healthy gum. The connecting structure thus allows individual three-dimentional freedom of pivotal movement about the base of the prosthesis structure, including rotation about a longitudinal axis of the latter. In one embodiment of the invention, the connecting structure is incorporated in an artificial dental structure that also includes the dental prosthesis and the base component. The dental prosthesis has dental body defining a crown section, a neck section and a root section. The base component has at least one base recess formed therein for receiving a section of said dental prosthesis. The connecting structure includes a membrane made of a resilient membrane material. The membrane is mounted on said root section of said dental prosthesis. The resilient membrane material and said membrane thickness are such that when said root section with said membrane mounted thereon are fittingly inserted in said base recess, said membrane allows said prosthesis structure to move from a first position to a second position in response to a pressure applied thereon and said membrane resiliently biases said prosthesis structure from said second position to said first position when said pressure is released. The resilient characteristics of the membrane material allows the membrane to recover its shape and size after deformation caused by the mechanical stress generated during the chewing process. The resilient characteristics of the membrane material thus allow the prosthesis structure on which it is mounted to spring back to its original position once the stress is released. The membrane could either be manufactured separately, mounted on the prosthesis structure at the manufacturing site or even mounted to both the prosthesis structure and the base component at the manufacturing site. |
