DENTAL IMPLANT

Abstract

The invention relates to surgical and orthopedic dentistry, particularly to implantology, more particularly to apparatus for mounting a dental prosthesis at the site of a missing tooth, and more particularly to dental (tooth) implants. Proposed is an implant which consists of a base section, an abutment and a connecting screw, said abutment having a conical surface with a total angle of 7-9, and lobes positioned in the inner gingival region, and said screw being threaded with a pitch of 0.20.05 mm. The implant has enhanced strength, particularly when in the form of narrow prostheses.

Claims

1. A dental implant for placement in a jaw bone, comprising a base part, an abutment and a fixing screw, with an abutment receiving hole located at a coronal end of the base part of the implant, having a conical index section in a direction from the coronal end, forming a guide surface for the abutment, and at least one groove is extending radially outwards and arranged in the guide surface, designed to engage with an abutment cam, and in a cervical direction a threaded section is immediately adjacent to an index section for inserting the fixing screw; the abutment contains a connecting area for connection with the base part of the implant having a conical section adjacent by an index section in a cervical direction so that it forms a guide surface for the surface of the index section of the base part of the implant when the abutment is inserted in the implant, and at least one cam is radially moving away, designed to engage with the corresponding grooves of the base part of the implant, and the cervical end has an end surface with a hole through which the threaded section of the fixing screw can be inserted; while the index sections and the conical sections of the base part of the implant and the abutment are formed in such a way that, with the inserted abutment, the conical areas are at least partially in contact with each other, and the index areas are engaged with each other, and in each pair of the base part of the implant and the corresponding abutment there is a contact between the conical areas adjacent to an coronal end edge of the base part of the implant, and the fixing screw is designed not to engage with the threaded section of the base part of the implant, if the abutment with its end surface of the cam in an intermediate position lies on a surface of a platform of the base part of the implant, wherein the fixing screw has a thread pitch of 0.20.05 mm, and the cams are made on the conic surface of the abutment so that the connection is in an intra-gingival area of the jaw.

2. The dental implant according to claim 1, wherein that if there are three guides inside the conical section of the base part of the implant, one of them is made larger than the other two.

3. The dental implant according to claim 1, wherein a total angle of the conical surface is 5-9.

4. The dental implant according to claim 3, characterized in that the total angle of the conical surface is 7.

Description

BRIEF DESCRIPTION OF DRAWING FIGURES

[0033] The invention is explained further in more detail on the basis of embodiments and drawings:

[0034] FIG. 1 presents the typical design of a dental implant (1) including the base part of the implant (2) and the abutment (3) assembled.

[0035] FIG. 2 presents the cross-section of the dental implant shown in FIG. 1, which also has a fixing (retaining) screw (4).

[0036] FIG. 3 shows an implant (2) with an external thread (22) and an internal fixation (5). Internal fixation (5) shows a conical section 55, an area with guides (555) and an internal thread (5555). The conical area (55) is located above the area with guides (555) and the thread area (5555).

[0037] FIG. 4 shows an abutment (3) which has a conical contact pin (33) and a guide area (333). Inner hole (3333) for fixing the retaining screw inside the implant.

[0038] Orthopedic components (such as crowns or bridges) are mounted above the upper contact pin (33333).

[0039] FIG. 5 shows the abutment scheme for different sizes of guide grooves, which has a conical contact pin (33) and a guide area (333). Inner hole (3333) for fixing the retaining screw inside the implant, the abutment (3) inside includes the upper conical area (33a) and the lower conical area (33b), which will be below the guide area (333)

[0040] FIG. 6 shows a comparison of these two threading options. Screw 4aa standard screw with thread 444a M1.6, core diameter 44a and thread pitch 0.35. The screw 4b has the same core diameter of 44b as 4a with the core diameter of 44a.

[0041] FIG. 7top view of the base part of the implant (2). Inside the cone three guides are shown. In FIG. 7aguides 7 and 77 of the same size. In FIG. 7btwo guides 7 of the same size and one guide 77 of the larger size.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0042] The device works as follows. To place the dental implant 1 in the patient's mouth, at the first stage of treatment, it is provided that the base part 2 is mounted in the jaw bone. For this, the base part 2 has a thread 22 on the outside, made as a self-driving thread, so that the placement in the jawbone can be done by screwing in. In this case, the thread 22 pitch can be made uniform or variable, and due to the appropriate choice of parameters, possible various biological factors, etc., as well as different types of implantation can be taken into account. In this case, the design and parameters of the thread 22 are calculated, in particular, taking into account the desired high primary stability and uniform transmission of forces arising from the mastication load of the dental implant to the jaw bone. In combination with a properly formed cone, a self-holding joint is detected when the abutment is inserted into the implant. Thereby, additional stability of the joint is achieved.

[0043] After insertion of the base part 2, an implantation phase of four weeks to six months is provided in the jawbone, during which the base part should grow into the tissue and jaw bone.

[0044] Then, at the second stage of treatment, an abutment 3 with the denture element can be inserted. With particularly favorable bone behavior and consequently high primary stability, the abutment 3 and other prosthetic components can be placed even immediately after the insertion of the base part or implant. To mechanically establish a relatively stable joint between the base part 2 and the abutment 3, on the abutment 3 a contact pin 33 is made, which, when the base part 2 is assembled with the abutment 3, is inserted into a notch in the base part 2, forming a receiving channel for the retaining screw 4. The mechanical joint of the base part 2 with the abutment 3 is carried out by means of the corresponding fixing screw 4, with the external thread 444 screwed into the internal thread 5555 provided in the base part 2. In this case, the head of the fixing screw 4 presses the abutment 3 to the base part 2.