TWI720767B - Improved structure of crown support base - Google Patents

Abstract

An improved structure of a tooth crown support base, which is mainly composed of a base body and a transmission member. The support base body has an upwardly extending receiving end and a downwardly extending assembly end that can be assembled into an artificial tooth root , And the abutment body is provided with a through hole penetrating the receiving end and the assembly end, and a first threaded section is provided in the through hole, and the transmission part passes through the through hole from the assembly end, and the transmission part has a direction The first end of the receiving end and the opposite second end. The first end is provided with a transmission part and a second thread section, and the transmission part is screwed with the first thread section by its second thread section and passes through The transmission part adjusts the screw connection position of the transmission part, so that the second end of the transmission part is relatively abutted on the artificial tooth root.

Description

Improved structure of crown support base

The present invention is related to the structure of the crown support base for dental implants, in particular to an improved structure of the crown support base.

With the advancement of medical technology, dental implant surgery has become quite common for more severely damaged teeth. Dental implant surgery is the implantation of artificial roots (or implants) in the alveolar position of the removed tooth. ), and then combine a pedestal on the artificial tooth root for setting the artificial tooth crown.

The structure of the conventional dental abutment base 90, as shown in Figure 5, mainly has a receiving end 92 extending upward to be connected to the crown 91, and a receiving end 92 extending downward to be relatively inserted into the artificial tooth root 93 The assembling end 94 in the middle, wherein the assembling end 94 is in the shape of a tapered cone that tapers downwards, and the artificial tooth root 93 is provided with a taper sleeve inner hole 931 corresponding to the assembling end 94, by Therefore, the assembly end 94 of the support base 90 can be tightly sleeved with the inner hole 931 of the taper sleeve of the artificial tooth root 93.

The above method of using taper to combine the abutment base 90 and the artificial tooth root 93 can achieve a tight fitting combination. However, under long-term use, under the influence of the continuous pushing force generated during the tooth occlusion, the abutment base will be 90 and the artificial root 93 are bitten tighter and tighter. As a result, when the artificial root 93 or the abutment 90 is damaged, or there are other irresistible factors that require removal or replacement of the abutment 90, it must cost quite a bit. It takes a lot of effort to separate the abutment base 90 from the artificial tooth root 93, and during the removal process, it is easy to cause the jawbone to be injured due to incorrect extraction angle or excessive force.

In view of this, how to solve the above-mentioned problems is the primary problem to be solved by the present invention.

The main purpose of the present invention is to provide an improved structure for the crown support pedestal, which has a simple structure, is easy to manufacture, and can ensure that the force angle is maintained in a positive vertical direction when it is removed from the artificial tooth root, so as to effectively solve the problem of extraction. Incorrect angle or excessive force applied to the jawbone.

In order to achieve the foregoing objective, the present invention provides an improved structure of a crown support pedestal, which includes: An abutment body has a receiving end extending upwards for engaging the tooth crown, and a connecting end extending downwards for assembling in an artificial tooth root, and the abutment body is opened along its axial direction A through hole penetrating the receiving end and the assembly end, and a first threaded section is provided in the through hole; and A transmission element penetrates through the through hole from the assembly end, the transmission element has a first end facing the receiving end, and a second end opposite to the first end, the first end having a The transmission part and a second threaded section, the first end is screwed to the first threaded section with its second threaded section, and the transmission part can be used to adjust the screwing position of the transmission part so that the second end can be Relatively abut on the artificial tooth root.

Preferably, the through hole is provided with the first threaded section at the junction of the receiving end and the assembling end.

Preferably, the first end of the transmission member is recessed with a groove on an end surface facing the receiving end to form the transmission portion.

Preferably, the through hole portion located in the assembly end forms a downwardly expanding tapered hole portion, and the outer peripheral surface of the transmission member has a taper that can be matched with the tapered hole portion. And after the transmission member is screwed to the first thread section by the second thread section, the outer peripheral surface of the transmission member will closely fit the tapered hole portion.

Furthermore, after the transmission element is screwed with the second threaded section and the first threaded section, the second end of the transmission element will be partially exposed outside the assembly end to form a relatively abuttable The pushing part on the artificial tooth root.

Furthermore, the outer peripheral surface of the assembly end is tapered downward, and the artificial tooth root has an inner cone hole that can be matched with the outer peripheral surface of the assembly end. After the end is assembled with the inner cone hole of the artificial tooth root by its outer peripheral surface, the pushing part of the transmission member is relatively abutted on a bottom surface of the inner cone hole.

It is not difficult to obtain an in-depth understanding of the above-mentioned objects and advantages of the present invention from the following detailed description of the selected embodiments and the accompanying drawings.

First of all, please refer to Figures 1 to 3, which is the first embodiment of the improved structure of crown support pedestal provided by the present invention, which is mainly composed of a table body 11 and a transmission member 21, in which:

The abutment body 11 is in the shape of a column, and has a receiving end 12 extending upwards for engaging the crown (not shown), and a receiving end 12 extending downwards for assembling an artificial tooth root 31 (ie implant The assembling end 13 of the body), and the abutment body 11 defines a through hole 14 extending through the receiving end 12 and the assembling end 13 along its axial direction, and the through hole 14 is opposite to the receiving end 12 and the assembling end 13 The junction of the end 13 is provided with a first threaded section 15. Furthermore, the outer peripheral surface of the set of connecting ends 13 is tapered and tapered downward, and is located in the part of the through hole 14 in the set of connecting ends 13 A tapered hole 141 that gradually expands downward is formed.

The transmission member 21 is in the shape of a long rod and has a first end 22 facing the receiving end 12 and a second end 23 opposite to the first end 22. A second thread is formed on the first end 22 Section 221, and a groove is recessed on an end surface of the first end 22 facing the receiving end 12 to form a transmission portion 222, and the outer peripheral surface of the transmission member 21 has a tapered hole portion 141 corresponding to each other Assembled taper, the transmission member 21 passes through the through hole 14 with its first end 22 from the assembling end 13, and is screwed with the first threaded section 15 by the second threaded section 221, and During the screwing process, the outer peripheral surface of the transmission member 21 will gradually be closely attached to the tapered hole portion 141, and after the screwing, the second end 23 will be partially exposed outside the assembly end 13 , Forming a pushing portion 231 that can relatively abut on the artificial tooth root 31.

The improved structure of the crown support base of the present invention is composed of the above-mentioned components, and the assembly end 13 can be used for coupling to an artificial tooth root 31 with an inner cone hole 32, and the taper of the inner cone hole 32 can match the The taper of the outer peripheral surface of the assembly end 13 corresponds to each other. When combined, as shown in Figure 3, the taper of the outer peripheral surface of the assembly end 13 can be tightly fitted with the inner taper hole 32 of the artificial tooth root 31. , And after the assembling end 13 and the inner tapered hole 32 of the artificial tooth root 31 are nested and assembled with each other, the pushing portion 231 of the transmission member 21 will relatively abut against one of the inner tapered holes 32 On the bottom surface 321. When the abutment body 11 is to be removed from the artificial tooth root 31, only a wrench tool (not shown in the figure) needs to be extended from the receiving end 12 into the through hole 14 and correspondingly embedded in the transmission On the transmission portion 222 of the member 21, the transmission portion 222 can be rotated by a tool to change the screw position of the transmission member 21. In order to prevent the support body 11 from rotating with the transmission member 21, In actual operation, a finger or another clamp (not shown in the figure) can be used to directly block the support body 11 from following rotation. As a result, as shown in Figure 4, when the transmission part 222 is rotated to drive the transmission member 21 When moving downward along the first threaded section 15, since the pushing portion 231 of the second end 23 is relatively abutted on the bottom surface 321 of the inner taper hole 32 of the artificial tooth root 31, the direction of the transmission member 21 is restricted. Therefore, when the transmission member 21 is continuously rotated, the support body 11 will be driven to move upward in a positive vertical direction, and thereby the assembly end 13 of the support body 11 can be smoothly released. The combined relationship with the conical surface of the cone hole 32 in the artificial tooth root 31 allows the abutment body 11 to be separated from the artificial tooth root 31 smoothly.

The present invention composed of the above structure can have the following advantages: 1. The structure of the present invention is simple and easy to manufacture, and it can ensure that the angle of force when the abutment body 11 is removed from the artificial tooth root 31 is maintained in a positive vertical direction, so that the removal process can be quite labor-saving and fast. It can also effectively solve the problem of jaw bone injury caused by incorrect extraction angle or excessive force. 2. In the present invention, the through hole 14 located in the assembly end 13 is formed with a tapered hole portion 141 that gradually expands downwards, so that the transmission member 21 can be connected from the assembly with its first end 22 When the end 13 passes through the through hole 14, a guiding effect of the passing path is additionally generated. 3. The present invention utilizes the through hole 14 located in the assembly end 13 to form a tapered hole portion 141 that gradually expands downwards, and the outer peripheral surface of the transmission member 21 has a tapered hole portion that can interact with the tapered hole portion. 141 is matched with each other (that is, complementary) taper, so that after the second threaded section 221 is screwed to the first threaded section 15, the outer peripheral surface of the transmission member 21 will be able to engage with the tapered hole The portion 141 fits tightly to effectively prevent loosening, and further allows the assembly end 13 of the abutment body 11 to form a solid structure to ensure its structural strength.

However, the disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention. Therefore, all changes in numerical values or replacement of equivalent elements should still belong to the scope of the present invention.

In summary, when people who are familiar with this technique can understand that this invention can clearly achieve the aforementioned purpose, it has actually complied with the provisions of the Patent Law, so they file an application according to the law.

(Learning part) 90: pedestal 91: crown 92: Socket 93: Artificial tooth root 931: Taper sleeve inner hole 94: assembly end (Part of the invention) 11: The stand body 12: Socket 13: Assembling end 14: Through hole 141: Taper hole 15: The first thread segment 21: Transmission parts 22: first end 221: second thread segment 222: Transmission Department 23: second end 231: Push to the Ministry 31: Artificial tooth root 32: inner cone hole 321: Bottom

Figure 1 is a three-dimensional exploded schematic view of the present invention. Figure 2 is a schematic diagram of the structure of the present invention after assembly. Figure 3 is a schematic diagram of the state of use when the present invention is combined with an artificial root. Figure 4 is a schematic diagram of the disassembled state of the present invention when it is separated from the artificial tooth root. Figure 5 is a schematic diagram of the structure of the conventional dental abutment.

11: The stand body

12: Socket

13: Assembling end

14: Through hole

141: Taper hole

15: The first thread segment

21: Transmission parts

22: first end

221: second thread segment

222: Transmission Department

23: second end

231: Push to the Ministry

Claims (3)

An improved structure of a tooth crown support base, comprising: a table body with a receiving end extending upwards to be connected to the tooth crown, and a connecting end extending downwards to be connected to an artificial tooth root , And the abutment body is provided with a through hole extending through the receiving end and the assembly end along its axial direction, and a first threaded section is provided in the through hole; and a transmission member penetrated from the assembly end In the through hole, the transmission member has a first end facing the receiving end and a second end opposite to the first end. The first end has a transmission portion and a second threaded section. One end is screwed to the first threaded section with its second threaded section, and the transmission part can be used to adjust the screwing position of the transmission member so that the second end can relatively abut on the artificial tooth root; wherein, The through hole portion located in the assembly end forms a downwardly expanding tapered hole portion, and the outer peripheral surface of the transmission member has a taper that can be matched with the tapered hole portion. After the second threaded section and the first threaded section are screwed together, the outer peripheral surface of the transmission member will be closely attached to the tapered hole, and the second threaded section and the first threaded section will be attached to the transmission member. After the threaded sections are screwed together, the second end of the transmission member will be partially exposed outside the assembly end, and a push part that can relatively abut on the artificial tooth root is formed, and the assembly end has an outer peripheral surface The artificial tooth root has an inner taper hole that can be matched with the outer circumferential surface of the group of joint ends, and the outer circumferential surface of the group of joint ends is in the inner cone of the artificial tooth root. After the taper holes are assembled with each other, the pushing part of the transmission member is relatively abutted on a bottom surface of the inner taper hole. The improved structure of the crown support base of claim 1, wherein the through hole is provided with the first threaded section at the junction of the receiving end and the assembly end. The improved structure of the crown support base of claim 1, wherein the first end of the transmission member is recessed with a groove on an end surface facing the receiving end to form the transmission portion.

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