Dr. Niznick's Dental Implant Patents

Paragon Patents: 2023-Present

Patent Pending on Implant with Smooth Neck and Score Lines for Depth Control

Abstract

Dental implants include a threaded body portion having a textured surface, and an externally smooth neck portion having one or more depth gauge lines to guide insertion into a patient’s jawbone, with the neck portion projecting above the jawbone, allowing the gingival tissue to be sutured over the implant, or with the neck portion projecting through the gingival tissue.

Patent Pending on Friction-fit Implant Extender with Flat Top to Convert to MUA

Abstract

A screw-type dental implant assembly includes two parts: an endosseous dental implant with an internally-threaded shaft and an internal wrench-engaging surface, located inside the body of the implant, for inserting the implant into a patient’s jawbone; and a separate extender/post/abutment (the “extender”) for frictional insertion into, and for attachment to the implant’s internal shaft, that includes a flat top surface with a diameter of about 4mm to 6mm in diameter, where the flat top has a circular profile.

Dual Function Dental Implants

Abstract

A screw-type endosseous dental implant includes, near the top, on its external surface, a ridge projecting laterally and an internally-threaded shaft with a lead-in, beveled opening, an internal wrench-engaging surface located below the lead-in, beveled opening and below the internal wrench-engaging surface and above the internal threads, an internal undercut/groove creating a chamber formed to receive a snap attachment for retention of an over-denture.

Self-Tapping Externally Threaded Dental Implants Including Bi-Directional External Cutting Grooves

Abstract

An externally threaded screw-type self-tapping dental implant includes: two or more external cutting grooves, at least one/one set of cuts in clockwise rotation of the implant, and at least one/another set, that cuts in counterclockwise rotation of the implant; and an internal passage in the implant that includes wrench-engaging surfaces and internal threads.

40^th Anniversary of the Invention that changed the Dental Implant Industry

1986 Screw-Vent Implant Patent - First Internal Conical Connection

2026 marked the 40^th anniversary of Dr. Niznick’s 1986 invention that changed the implant industry- the Internal Conical Connection. His Screw-Vent implant featured a 1.5mm deep internal hexagon with a threaded shaft below it. By creating a lead-in bevel to the internal shaft and making the mating bevel of the abutment 1/2 degree less as measured from the horizontal, both lateral stability and a sealed junction were assured. The patent covered any design of internal wrench-engaging surfaces and all degrees of internal lead-in bevels. Dr.Niznick’s first Screw-Vent was placed January 1986 in his mother-in-law and remained in function, connected to a Core-Vent implant, for 32 years until her passing at 99.

This patented connection provided the stability needed to prevent screw loosening and thus minimize long-term prosthetic complications. It also allowed screw-retained, two-piece abutments to interlock with the internal hexagon to prevent rotation, which made single-tooth replacement a viable option in implant restorations. This invention of a stable, sealed connection between implant and abutment made implant prosthetics a clinical reality.