Dental implant

Claim 2

Endo-osseous dental implant for anchoring a dental prothesis in a jawbone, comprising an elongated conical shaft carrying, on a part of its length, a self-drilling conical screw thread for screwing into the walls of the alveolar recess remaining in the jawbone upon extraction of a tooth, said shaft having, at one end thereof, a smooth sharp point extending beyond said conical screw for penetrating deep into the apical area of the jawbone, the length of said point being at least a half of the length of said screw, said shaft having at the other end thereof, a head for securing a dental prothesis, said head having a cross-section smaller than that of the base of said conical screw to form a shoulder serving as a resting surface for said dental prothesis, and at least one longitudinally extending groove cut along a generatrix of said screw threads.

Claim 3

An implant according to claim 1 wherein said point is conical and extends from the generatrix of said conical shaft through the thread.

Claim 4

An implant according to claim 2 wherein the angle of the apex of said conical point is less than 10*.

Claim 5

A dental implant for supporting a plurality of artificial teeth comprising at least a polygonal head and an auxiliary support, said head having an elongated conical shaft, carrying on a part of its length, a self-tapping conical screw thread for screwing into the walls of the alveolar recess remaining upon extraction of a tooth, said shaft having, at one end thereof, a sharp point extending below said conical screw for penetrating deep into the apical area of the jawbone, the length of said point being at least a half of the length of said screw, and said shaft having at the other end thereof said polygonal head for securing both an artificial tooth and said auxiliary support, said support comprising a sleeve which fits over said head and which carries at least one lateral arm, the end of said arm being provided with a second head for securing an artificial tooth.

Claim 6

A dental implant for supporting a plurality of artificial teeth comprising at least a polygonal head and an auxiliary support, said head having an elongated conical shaft, carrying on a part of its length, a self-tapping conical screw thread for screwing into the walls of the alveolar recess remaining upon extraction of a tooth, said shaft having, at one end thereof, a sharp point extending below said conical screw for penetrating deep into the apical area of the jawbone, the length of said point being at least a half of the length of said screw, and said shaft having at the other end thereof said polygonal head for securing both an artificial tooth and said auxiliary support, said support comprising a sleeve which fits over said head and which carries at least one lateral arm, the end of said arm being provided with a second head for securing an artificial tooth.

Claim 7

A dental implant according to claim 4 wherein said auxiliary support is formed of a blank comprising a sleeve carrying at least one lateral plate which is adjusted by the dental practitioner for forming said lateral arm and said second head.