CN203328832U

CN203328832U - Artificial tooth implantation structure

Info

Publication number: CN203328832U
Application number: CN2013202565375U
Authority: CN
Inventors: 叶雷
Original assignee: Chongqing Runze Pharmaceutical Co Ltd
Current assignee: Chongqing Runze Pharmaceutical Co Ltd
Priority date: 2013-05-13
Filing date: 2013-05-13
Publication date: 2013-12-11
Anticipated expiration: 2023-05-13

Abstract

The utility model relates to an artificial tooth implantation structure. The structure comprises a tooth implant body (10), a screw locking assembly (50) and a brace part (40), wherein the tooth implant body (10) is provided with an implant part (11), a top connection part (12) and an auxiliary fixing part (13) between the implant part (11) and the top connection part (12); the brace part (40) is provided with a containing space (41) and an auxiliary supporting part (42); the screw locking assembly (50) is contained and inserted in the containing space to achieve inserted connection between the brace part (40) and the screw locking assembly (50); the auxiliary supporting part is connected with the auxiliary fixing part (13) in a matching manner; the tooth implant body (10) is made of a porous material and has porosity of 60%-70%. The artificial tooth implantation structure avoids interference of occlusion and is simple in structure, high in strength and good in biocompatibility, and the service life of the structure is prolonged.

Description

A kind of implant dental structure

Technical field

This utility model relates to a kind of medical apparatus and instruments of Artificial Intervention, especially relates to a kind of implant dental structure.

Background technology

The health of tooth is quite important, but now people because busy and ignore maintenance regularly, also cause the situation of periodontal disease, decayed tooth to occur because be negligent of at ordinary times the every day cleaning teeth.And when the situation of decayed tooth serious, just must pull out tooth and artificial tooth is installed, artificial tooth can be divided into fixed artificial tooth and movable artificial tooth, fixed artificial tooth directly sticks together artificial tooth on root of the tooth, this mode must be based upon root of the tooth still under quite healthy situation; Perhaps artificial tooth is coordinated the tooth of front and back position cast one group of detachable dental prostheses and be fixed, and the use of detachable dental prostheses easily make adjacent teeth tilt and cap product residue and cause bacteria breed.And the set detachable dental prostheses of aforesaid way is all supported with the mucosa of dental bed, when crunching food, strength can't be reached to jawbone, thereby can't utilize artificial tooth to be chewed harder food, be its major defect.

Along with the technical development of " implant tooth " is gradually ripe and stable, the implant tooth first utilizes the artificial tooth root of the titanium that bio-compatibility is high to insert in teeth groove and fixes and sew up, and through after several month after the bone stable connection in artificial tooth root and teeth groove, then carry out the action of subsequent installation artificial tooth.Because artificial tooth root directly is connected with bone, thereby preferably support force can be provided, and can be chewed and very popular harder food.And the implant tooth plant that the tooth build can be divided into single-piece or multi-piece type is planted the tooth body, single-piece is planted the tooth body and is disclosed " the Dental Implant " of No. 2010/0119993 as United States Patent (USP), the structure that single-piece is planted the tooth body is directly inserted after the bone groove fixing, after several months, this single-piece is planted tooth body and bone groove and is carried out bone while integrating fixedly, then carries out molding and then directly sheathed this single-piece that is fixed in of artificial tooth is planted on the tooth body.When being to implant, the advantage of aforesaid way plants the less-restrictive of the body degree of depth, and it is comparatively firm to plant the tooth body, easy fracture not, but its shortcoming is single-piece and plants the tooth body after the implantable bone groove, having this single-piece of part plants the tooth body and protrudes from outside soft tissue (soft tissue), in waiting between the bone integration period, this single-piece is planted the tooth body easily because the Occlusal interference of dental implant surgical person when chewing on things, the undercapacity that causes bone to integrate, the steadiness after tooth is planted in impact, in addition, single-piece is planted the tooth body and also can't be coordinated with other external member again, and the programmable space of artificial tooth is less.

Multi-piece type is planted the tooth body and as United States Patent (USP), is disclosed " the Dental Implant " of No. 2008/0160483, multi-piece type is planted the tooth body and will be planted the tooth body and be divided into implant (enossal implant) and coronal (coronal portion), while planting tooth, first implant is implanted in the bone groove, and make this implant not protrude from epidermis bone (corticalbone) layer in the bone groove, be coated with one deck soft tissue (soft tissue) layer on epidermis bone layer, on this soft tissue layer, be just oral cavity, so this implant can not be subject to Occlusal interference after implanting.And until implant and bone groove carry out bone integrate fixing after, then go this soft tissue layer of surgical incision being fixed on this implant this coronal is sealed, finally carry out molding and artificial tooth be fixed in and protrude on the outer coronal of this soft tissue layer.The advantage of this mode is effectively to avoid the problem of Occlusal interference, and this coronal can carry out various design on the other hand, and can coordinate different artificial tooth designs to combine fixing.But it is must be accurately sealed and cut and put down on epidermis bone layer, in order to the joint of follow-up coronal that its shortcoming is this implant.For instance, if this implant is too locked this epidermis bone layer, between the bone integration period in, this implant likely is subject to the covering slightly of this epidermis bone layer, and causes the difficulty of follow-up this coronal of joint.An other shortcoming is that structural strength is poor, because the mode of this coronal major part by screw lock is fixed on this implant, and this coronal is arranged in this soft tissue layer, the support force that causes this coronal horizontal direction is comparatively not enough, thereby the shearing that is subject to horizontal direction when coronal is while exerting pressure, the problem that easily has screw-locking structure to rupture, once screw-locking structure fracture, remaining spiral lock still is locked in this implant, takes out and is difficult for, thereby repair difficult.And, in prior art, select and the structure of implant dental structure arranges upper certain defect that all exists, after causing that the implant dental structure is long-time and using and tissue there will be repulsion, biocompatibility is poor and affect its service life.

The utility model content

The purpose of this utility model is to provide a kind of implant dental structure, and this implant dental structure can avoid preferably being subject to Occlusal interference in planting the tooth process, simple in structure, intensity is higher, and has good biocompatibility concurrently, has extended service life.

The purpose of this utility model is achieved in that

A kind of implant dental structure, it includes plants tooth body, screw lock module and facing part; This is planted the tooth body and has implanting portion, top-joining part, and is arranged at the auxiliary retention portion between this implanting portion and this top-joining part; This facing part has accommodating and inserts the accommodation space of this screw lock module, with the plug-in type that realizes this facing part and screw lock module, is connected, and the supplemental support section of this auxiliary retention portion that is connected; The described tooth body of planting is selected the porous product, and its porosity is 60 ~ 70%.

The above-mentioned tooth body of planting, preferably adopt the porous tantalum product.When through studying for a long period of time, finding that the porous tantalum product has improved the biocompatibility of this implant dental structure greatly, also well met its mechanical property, greatly improved its service life and implanted comfort level.Above-mentioned porous tantalum product, can adopt the preparations such as foam dipping method, die pressing.

Further, the outer surface of this implanting portion has a thread segment.

Further, this top-joining part has the screw lock groove extended toward this auxiliary retention portion, and above-mentioned screw lock module is by the sealed top-joining part of planting on the tooth body that is fixed in of this screw lock groove.

Bone bed is fixed in above-mentioned implanting portion, and the epidermis bone layer that is positioned at this bone bed surface, and this auxiliary retention portion is fixed in and is positioned at the soft tissue layer of this epidermis bone layer away from this bone bed one side.

Characteristics of the present utility model are: utilize this facing part to coat this screw lock module fully, and the supplemental support section that coordinates this facing part by protruding from this outer auxiliary retention portion of this epidermis bone layer, strengthened the support force of the horizontal direction of this screw lock module, reduced that this screw lock module is subject to the effect of horizontal shear and the probability that ruptures.And be set to the porous tantalum product by planting the tooth body, greatly improved the biocompatibility of this implant dental structure, also well met its mechanical property simultaneously, greatly improved its service life and implanted comfort level.

The accompanying drawing explanation

The STRUCTURE DECOMPOSITION schematic diagram that Fig. 1 is implant dental structure described in this utility model embodiment 1.

The syndeton schematic diagram of planting the tooth body that Fig. 2 is implant dental structure described in Fig. 1.

The syndeton schematic diagram of planting tooth body and screw lock module that Fig. 3 is implant dental structure described in Fig. 1.

The structural representation that Fig. 4 is the integrated connection of implant dental structure described in Fig. 1.

The specific embodiment

Be below this utility model preferred embodiment, and be not intended to limit protection domain of the present utility model.

Embodiment 1

As shown in Fig. 1～4: a kind of implant dental structure includes and plants tooth body 10, screw lock module 50 and facing part 40; This is planted tooth body 10 and has implanting portion 11, top-joining part 12, and be arranged at the auxiliary retention portion 13 between this implanting portion 11 and this top-joining part 12, and this auxiliary retention portion 13 and this top-joining part 12, can extend and obtain by these implanting portion 11 one, that is, this integral body of planting tooth body 10 can be one-body molded, and plant tooth body 10 and select the porous tantalum product, and its porosity is 60 ~ 70%; Bone bed 21 (Cancellous Bone) is fixed in this implanting portion 11, and the epidermis bone layer 22 (Cortical Bone) that is positioned at these bone bed 21 surfaces, this auxiliary retention portion 13 is fixed in and is positioned at the soft tissue layer 23 (Soft Tissue) of this epidermis bone layer 22 away from these bone bed 21 1 sides, wherein the outer surface of this implanting portion 11 has a thread segment 111, and it is by spiral way and this epidermis bone layer 22 and bone bed 21 combinations; Therefore, this integral body of planting tooth body 10 can be embedded in this soft tissue layer 23 fully or this auxiliary retention portion 13 is protruded from outside this soft tissue layer 23 a little, thereby, during waiting for that the bone integration is fixing, can effectively avoid the problem of Occlusal interference.Separately it should be noted that, this auxiliary retention portion 13 can be used as the buffering that spiral is locked, when this epidermis bone layer 22 is too locked in this implanting portion 11, this auxiliary retention portion 13 still can protrude between this epidermis bone layer 22 and this soft tissue layer 23, avoids whereby the problem of follow-up joint screw lock module 50.

This top-joining part 12 has a screw lock groove 121 extended toward this auxiliary retention portion 13, after the bone integration is fixing, then, by sealed this screw lock groove 121 that is fixed in of this screw lock module 50, is fixedly connected on whereby this and plants the top-joining part 12 on tooth body 10.And it should be noted that, this top-joining part 12 is the groove to lower recess, thereby can this screw lock module 50 of more efficiently cooperation be fixed, and strengthens the structural strength of these screw lock module 50 horizontal directions.

After this screw lock module 50 is fixing, utilize this screw lock module 50 to coordinate tooth position to carry out molding, and make this facing part 40, this facing part 40 has the accommodation space 41 of this screw lock module 50 of accommodating insertion, and the supplemental support section 42 of this auxiliary retention portion 13 that is connected, this facing part 40 can coat this screw lock module 50 fully by the fixing mode of inserting, and the upper end of this screw lock module 50 is set to regular hexagon, with the accommodation space 41 that coordinates respective shapes, be fixed, and be connected in this auxiliary retention portion 13 by this supplemental support section 42, strengthen fixing effect and reach.

In sum, because utilizing this facing part 40, this utility model coats this screw lock module 50 fully, and by protruding from this outer auxiliary retention portion 13 of this epidermis bone layer 22, coordinate the supplemental support section 42 of these facing parts 40 to strengthen the support force of the horizontal direction of these screw lock module 50, reduce that this screw lock module 50 is subject to the effect of horizontal shear and the probability that ruptures.In addition, auxiliary retention portion 13 of the present utility model protrudes from this epidermis bone layer 22, and is arranged at this soft tissue layer 23, and then supplemental support section 42 that can comparatively elastic this facing part 40 of cooperation strengthens in conjunction with fixing.Moreover the buffering of locking as spiral by this auxiliary retention portion 13, reduce sealed this implanting portion 11 degree of accuracy required in this epidermis bone layer 22, and have larger sealed cushion space.And be set to the porous tantalum product by planting tooth body 10, greatly improved the biocompatibility of this implant dental structure, also well met its mechanical property simultaneously, greatly improved its service life and implanted comfort level.

Claims

1. an implant dental structure, it is characterized in that: it includes plants tooth body (10), screw lock module (50) and facing part (40); This is planted tooth body (10) and has implanting portion (11), top-joining part (12), and is arranged at the auxiliary retention portion (13) between this implanting portion (11) and this top-joining part (12); This facing part (40) has accommodating and inserts the accommodation space (41) of this screw lock module (50), and the upper end of this screw lock module (50) is set to regular hexagon, to coordinate the accommodation space (41) of respective shapes, to realize that this facing part (40) is connected with the fixed insertion type of screw lock module (50), and the supplemental support section (42) of this auxiliary retention portion (13) that is connected; The described tooth body (10) of planting is selected the porous tantalum product, and its porosity is 60 ~ 70%; The outer surface of described implanting portion (11) has a thread segment (111).

2. implant dental structure according to claim 1, it is characterized in that: described top-joining part (12) has the screw lock groove (121) extended toward this auxiliary retention portion (13), and described screw lock module (50) is by the sealed top-joining part (12) of planting on tooth body (10) that is fixed in of this screw lock groove (121).

3. implant dental structure according to claim 1 and 2, it is characterized in that: described implanting portion (11) are fixed in bone bed (21), and the epidermis bone layer (22) that is positioned at this bone bed (21) surface, this auxiliary retention portion (13) is fixed in and is positioned at the soft tissue layer (23) of this epidermis bone layer (22) away from these bone bed (21) one sides.