Abstract:
An implant fixture that is inserted into a bone tissue formed of a cortical bone and a cancellous bone by rotating on a central axis to thereby form an artificial tooth root, comprising: a first portion that is inserted into the cortical bone and has a first screw thread having first peak and first valley alternating with one another on an outer surface of the first portion; and a second portion that is disposed below the first portion and inserted into the cancellous bone, wherein a second screw thread having second peak and second valley alternating with one another is formed on an outer surface of the second portion, wherein distances between adjacent second peak of the second screw thread are greater than distances between adjacent first peak of the first screw thread, and a first screw thread of the first portion is rotated three times or less.
Abstract:
The present invention relates to a surgical instrument for collecting autologous bone. The surgical instrument for collecting autologous bone comprises: a handle portion connected to a driving device; and a cutting portion which collects bone pieces of a person to be surgically operated on while rotating, wherein the cross-sectional area of the cutting portion is 10-40 % of the area of an imaginary circle having a diameter which is the distance from the center thereof to the outermost portion.
Abstract:
The present invention relates to a membrane for alveolar bone regeneration, and more specifically, to a membrane for alveolar bone regeneration which guides bone regeneration by covering an implant filling a bone defect region, comprising: a coupling portion which comprises a central hole for allowing an insertion body for an implant to be inserted into alveolar bone to penetrate through, and is coupled to the insertion body for an implant; a lateral bent portion which is bent downward from the coupling portion and as a whole forms a curved shape; and lateral cover portions which are protruded from both edges of the lateral bent portion and are bent toward the defect region of alveolar bone, wherein the lateral bent portion and the lateral cover portions are three-dimensionally formed in advance so as to fit the final shape of the alveolar bone to be regenerated.
Abstract:
The present invention relates to a dental implant assembly in which a contact area of threads contacted with each other for coupling an abutment with a fixture is relatively increased so as to enhance a coupling and fixing degree between the abutment and the fixture. The present invention provides a dental implant assembly that is implanted in an oral cavity to replace a lost tooth, including a fixture implanted in an alveolar bone and having an inner circumferential slope surface at an upper portion thereof and a female screw at an inner portion thereof; an abutment coupled to the fixture to locate a dental prosthesis on the fixture, the abutment having an outer circumferential slope surface in contact with the inner circumferential slope surface and a male screw threadly engaged with the female screw; and a slope contact surface defined by contact between the inner circumferential slope surface and the outer circumferential slope surface, wherein a contact area of the slope contact surface is smaller than an area of the inner circumferential slope surface.
Abstract:
The present invention relates to an oligopeptide for enhancing osteointegration and osteogenesis. More specifically, it relates to bioactive oligopeptide compounds having the general structural formula (C or K)-(I, K or P)-(I, P or K)-(K or P)-(K, P or S)-(P or S)-(A or S)-(A, P or S)-(A, P or T)-(E, P or T)-(E, L or T)-(E, L or S)-(A, L or S)-(A, I or S)-(A, I or S)-(I, M or S)-(L, M or S)-(C, L or M). The oligopeptide of the present invention is effective in bone filler replacement, vertical treatment and horizontal treatment. By using this invention, the continuous action of the oligopeptide on the surface of an implant treated with a thin film of the same can reduce the time of initial osteointegration. Additionally, an increase in the success rate of surgical operations on osteopenia patients can be achieved by inducing an increase in osteoblasts and function. It is also possible to achieve bone formation when bone mass is insufficient, without bone replacement, leading to a reduction in surgical operation costs.
Abstract:
The present invention relates to a dental implant having a plurality of axis portions thereby in use being capable of preventing an abrupt increase in an amount of bone compression through the plurality of axis portions, dispersing stress according to a gradual increase in placement torque, and simultaneously obtaining a proper initial fixing force, and more particularly, to a dental implant having first through third axis portions formed on the exterior circumferential surface thereof, capable of adjusting a bone contacting area, dispersing stress, gradually increasing an area used to compress bone between the first through third axis portions, and preventing an amount of bone compression from being abruptly increased, thereby facilitating placement of the dental implant and increasing an initial fixing force.
Abstract:
A screw type fixture is disclosed. In the fixture of the present invention, small screw threads (231) are formed on a ridge of a large screw thread (233) formed on the circumferential outer surface of the fixture, so that reliable fixing force of the fixture to cancellous bone is ensured by the increased contact surface, and stress around the large screw thread (233) is distributed. Furthermore, in the present invention, the pitch of the screw thread of a cortical bone coupling part (33) of the fixture, which is implanted in cortical bone, and the difference between the outer diameter thereof and the root diameter thereof are less than those of a cancellous bone coupling part (34) of the fixture, so that stress otherwise concentrated on the cortical bone is distributed to the cancellous bone, thus preventing bone resorption, and promoting osseointegration.
Abstract:
A dental implant having a plate, the dental implant including a plate having a shape corresponding to an outer surface of an alveolar bone of a human, and having a bottom surface that contacts the alveolar bone; a plurality of fixtures for fixing the plate to the alveolar bone; an artificial tooth arranged on the plate; and a coupled structure for fixing the artificial tooth to the plate. By using the dental implant, a simple implant inserting operation is possible by fixing the plate at an alveolar bone of a patient who is not normally masticate due to the absence of a natural tooth, in particular, who has an insufficient amount of bones or an inferior quality of bones such that a conventional implant may not be implanted to the patient.
Abstract:
The present invention relates to a dental implant assembly having a settlement-preventing step so as to prevent an abutment from settling due to a vertical load caused by mastication after the dental implant assembly is implanted. The present invention provides a dental implant assembly, which is implanted in an oral cavity to replace a lost tooth and includes a fixture implanted in an alveolar bone, an abutment coupled with the fixture to locate a dental prosthesis on the fixture, and a settlement-preventing means for preventing settlement of the abutment by being in contact with the fixture when the abutment is coupled with the fixture.
Abstract:
Provided is a dental implant fixture which rotates on a central axis to be inserted into an alveolar bone of a human body so as to form an artificial tooth. The dental implant fixture includes a body which includes an outer surface on which a first screw thread is formed, wherein the first screw thread includes first roots and first peaks which alternate with one another in the direction of the central axis; and a taper which is formed underneath the body to form a single body with the body, has a diameter which narrows downward, and includes an outer surface on which a second screw thread is formed, wherein the second screw thread includes second roots and second peaks which alternate with one another in the direction of the central axis, wherein a ratio between a height from one of the first peaks of the first screw thread to one of the first roots adjacent the one first peak and a length from the one first peak to the central axis is from 0.17:1 to 0.21:1.