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US 5,326,263 AGranted
Light-curable tooth reinforcement
OwnerBernard Weissmaninventor
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OwnerBernard Weissmaninventor
Estimating the term…
There is provided a procedure to maintain an otherwise whole tooth, from which the nerve has been removed by carrying out a procedure which includes inserting a thin flexible post, preferably formed of a light-transmitting, physiologically inert material, to the full depth of a prepared relatively narrow tooth nerve canal, which has previously been sealed at its bottom with gutta percha. The post is permitted to abut against the gutta percha. The post is then surrounded by a film of a composite-filler or sealant, which is preferably light-curable, coating the post while supporting and sealing the walls of the canal. The post is sufficiently flexible as to be able to follow the curvature of the canal, which may retain a slight natural curvature. The composite filler or sealant is then cured, preferably by an optical radiation carried through the preferably transparent post. In one embodiment the light-curing post is removable after the sealant has been at least partially cured. There is also provided a post formed of a light-transmitting flexible material, the post comprising a substantially cylindrical shank portion and an inwardly tapering, or convergent, first end.
A method of reinforcing a tooth from which its nerve has been removed, and its canal has been cleaned to remove all diseased tissue, the method comprising:
A method of reinforcing a tooth from which its nerve has been removed, and its canal has been cleaned to remove all diseased tissue and substantially straightened preparatory to forming a prosthetic crown or other prosthesis, the method comprising:
A dental tool post for reinforcing an obturated tooth and root, the dental tool post comprising a substantially cylindrical shank portion and an inwardly tapering, or convergent, first end, a plurality of circumferential grooves being formed in the surface of the shank portion of the tool post, and the post being formed of a physiologically inert, optically transmitting relatively flexible polymeric material.
A dental tool post for reinforcing an obturated tooth and root, the dental tool post comprising a substantially cylindrical shank portion and an inwardly tapering, or convergent, first end, a plurality of circumferential grooves being formed in the surface of the shank portion of the t post, and the post being formed of a physiologically inert optically transmitting relatively flexible polymeric material, and an internal circumferential surface defining a channel extending substantially axially longitudinally through the post, and a relatively moveable rod extending into and through the axial channel and beyond the convergent first end, the central rod being an optical fiber material.
Dependencies are inferred from the claim text.