DENTAL IMPLANT, CONNECTING SCREW AND KIT FOR IMPLANTATION

Abstract

The invention relates to a dental implant for mounting in the jaw bone, comprising a base portion, an abutment and a connecting screw, the post of said connecting screw having a stepped design, wherein the diameter of the bottom part thereof before the beginning of the thread of the post does not exceed the inner diameter of the bearing thread of the abutment, and the distance from the head of the screw to the top end thereof is smaller than the axial distance from the head of the screw to the bearing thread of the abutment by 0.1-1 mm (optimally by 0.2-0.3 mm). According to claim 1, comprising the base portion of the implant, the abutment, and auxiliary components, the latter comprising a set of connecting screws having a screw thread pitch appropriate for the abutment sizes for prosthesis implantation in patients with a high, medium and low gum height.

Claims

1. A dental implant for placement in a jaw bone, comprising a base part, a abutment and a connecting screw, in which a coronal end of the base part of the implant has a receiving hole for the abutment, having in a direction from the coronal end a conical index portion forming a guide surface for the abutment, and in a cervical direction there is a threaded portion directly adjacent to the index portion for placement of the connecting screw; the abutment contains a connecting zone for connection with the base part of the implant, having the conical portion, to which the index area is adjacent in the cervical direction designed in a way, that it forms a guide surface for a surface of the index portion of the base part of the implant when the abutment is placed in the implant, and at the cervical end it has an end surface with a hole through which the threaded portion of the connecting screw with a supporting thread can be introduced, as well as a connecting screw, comprising of a head and a stein, threaded in a lower part, characterized in that the connecting screw stein is made stepped, and its lower part starting from the support thread to the stein thread has a diameter not exceeding an inner diameter of the support thread of the abutment, and a distance from the screw head to a beginning of the lower part of the stein is less, than a distance along an axis from the screw head to the abutment support thread by 0.1-1 mm.

2. The dental implant according to claim 1, characterized in that the distance from the screw head to the beginning of the lower part of the stein is less than the axis distance from the screw head to the abutment support thread by 0.2-0.3 mm.

3. The connecting screw for the dental implant according to claim 1, connecting the abutment to the base part and consisting of a head and a pin with a thread at its lower end, characterized in that a diameter of the pin is less than the inner diameter of the abutment support thread.

4. The connecting screw according to claim 3, characterized in that it is made stepped so that the area of the stein with a reduced diameter is an area from the stein thread to a top of the abutment support thread.

5. A kit for implantation of the dental implant according to claim 1, comprising the base part of the implant, the abutment, the connecting screw and other auxiliary components, characterized in that it contains a set of connecting screws according to claim 3 with a pitch of the screw corresponding to dimensions of the abutment for implantation of prosthesis in patients with high, medium and low gingiva height.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The technical character of the claimed group of inventions is illustrated by the following drawings. In all the figures in the drawings, the same elements have the same positions. The following symbols are used: [0039] 1the base part of the dental implant; 2abutment; 22support thread; [0040] 3screw; 33thread; 333screw stem; 3333screw head. [0041] GHgingiva height; ATNdistance from screw head to the threads of the abutment vertically; SSHvertical length of the screw pitch; SSSreduction of the diameter of the screw stem.

[0042] The list of drawings includes.

[0043] FIG. 1. Dental implant with short gingiva height

[0044] FIG. 2. Dental implant with high gingiva height

[0045] FIG. 3. Negative typeshort screw inside of the abutment-implant combination with high gingiva height

[0046] FIG. 4. Negative typelong screw inside of the of the abutment-implant combination in short gingiva height

[0047] FIG. 5. Screw with large screw stem diameter

[0048] FIG. 6. Screw with a reduced screw stem diameter

[0049] FIG. 7. Abutment with support thread and screw

[0050] FIG. 8. Screw with screw thread diameter shift

[0051] FIG. 9. Dental implant with a screw combination that corresponds to the short gingiva height.

[0052] FIG. 10. Dental implant with a screw combination that corresponds to high gingiva height.

[0053] FIG. 11. Negative type: dental implant with a screw combination that does not coincide with the short gingiva height.

[0054] FIG. 12. Negative type: dental implant with a screw combination that does not coincide with the high gingiva height.

INDUSTRIAL APPLICABILITY

[0055] The prosthesis should be placed as follows. Determine the height of the patient's gingiva and select the appropriate abutment 2. In the patient's mouth, at the first stage of treatment place the basic part 1 in the jaw bone, the basic part 1 has a thread on the outer side, so that placement in the jaw bone can be carried out by screwing into the hole. The thread pitch can be made uniform or variable, and due to appropriate selection of parameters various possible biological factors, etc., as well as different implantation type can also be taken into account. In this case, the design and parameters of the thread are calculated, in particular, taking into account the desirable high primary stability and uniform transfer of forces arising from the masticatory load of the dental implant on the jaw bone. Properly formed cone provides self-braking connection when abutment 2 is inserted into BP 1, providing additional stability of the connection.

[0056] After placement of the basic part 1 to the jaw bone, there is a phase of implantation from four weeks up to six months, during which the basic part must grow into the tissue and the jaw bone. Then, at the second stage of treatment, an abutment 2 with the placed denture element can be inserted. In case of particularly favorable bone behavior and correspondingly high primary stability, abutment 2 and other prosthetic components can be placed even immediately after the placement of the base part of the implant. In order to place using a simple method of mechanically relatively stable connection between the base part 1 and the abutment 2, a contact pin is made on the abutment, which at assembly of the base part 1 with the abutment 2 is placed in the shaped recess in the base part. The mechanical connection of the base part 1 to the abutment 2 is carried out by means of a connecting screw 3, the stem 333 is inserted into the abutment by screwing through the support thread 22, lowered to the BP 1, after which the thread of the connecting screw 33 is screwed into the internal thread of the base part 2. In this case, the head of 3333 connecting screw 3 presses the abutment 2 to the base part 1.

[0057] Both the base part of the implant and the abutment are usually made of metal or ceramics, in particular titanium, zirconium, titanium alloy, zirconium alloy, titanium-containing alloy, zirconium-containing alloy, ceramics of zirconium oxides and aluminum. In addition, ceramics based on silicon or silicon oxide and containing, for example, carbon or tungsten can be used.

[0058] Use of the claimed invention can improve the quality of prosthetics, reduce its complexity.