CN101828972A

CN101828972A - Oral implant

Info

Publication number: CN101828972A
Application number: CN200910014577A
Authority: CN
Inventors: 周磊; 殷纪疏
Original assignee: WEIHAI WEIGAO BIOLOGICAL TECHNOLOGY Co Ltd
Current assignee: WEIHAI WEIGAO BIOLOGICAL TECHNOLOGY Co Ltd
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2010-09-15

Abstract

The invention relates to an implant restoration technology of oral medicine, in particular to an oral implant with a bell mouth conical structure and a circular arc tooth structure. The oral implant is characterized in that a body part is composed of a cylindrical section and a conical section, wherein micro-screw threads are arranged on the surface of the upper part of the cylindrical section; external screw threads are arranged on the surface of the upper part of the conical section; the external screw threads extend towards the cylindrical section and gradually exit; and the external screw threads extend towards the lower part of the conical section and gradually become shallow until the tail parts present in a convex shape and disappear. The invention has the following beneficial effects: 1, the oral implant is favorable for an implantation dentist to feel the proper position, and has a little beneficial bone squeezing effect at an implant hole opening; 2, the oral implant has the advantages of superior biomechanical performances, easy master of implantation, sensible bone squeezing amount, and the like; 3, a proper bone squeezing effect can be obtained; 4, the length ratio of the cylindrical section to conical section is optimized and the bionic effect is better; 5, the conical surface matching between the implant and a base can obtain good sealing property and stability; 6, the implant and the base can not deform easily and can bear larger torsion forces; and 7, a platform conversion structure can be realized to reduce or avoid bone resorption.

Description

Mouth cavity planting body

Technical field:

The present invention relates to stomatology plantation recovery technique, particularly a kind of mouth cavity planting body that adds circular-arc tooth structure with the horn mouth taper shape.

Background technology:

The sixties in 20th century, Sweden Gothenburg university

Professor has carried out about tooth-planting material and bone research of planting body interface, founded " synosteosis " theory of titanium, for theoretical basis has been established in the application of modern oral implantology, the tooth-planting application technology is a most important part in the modern oral implantology.Extensively the carrying out and use the problem that has solved on a series of attractive in appearance and function that absence of tooth clinically brings of tooth-planting artificial tooth.

Yet the tooth in the anti-rotational structure of the profile of tooth of implantation body can produce local deformation because of bearing moment of torsion in operation, and this makes meets difficulty when base station is in place; Bone extruding degree is difficult to hold sometimes, excessive extrusion can occur, or does not have the gapped situation of extruding; Bone resorption after plantation is repaired takes place or the like.These all may cause planting the undesirable or repairing failure of repairing effect.With the exception of this, to the research of natural teeth structure, prove that it has better biomechanics characteristic, should become one of bionics target.

Summary of the invention:

Purpose of the present invention is exactly in order to overcome above-mentioned the deficiencies in the prior art, a kind of novel structure is provided, easily uses, anti-rotate effect is good, can bear high pulling torque more, have imitative natural tooth root profile, be fit to the Chinese visible human feature, operation technique is more controlled, be easy to obtain primary stability, help the synosteosis process, avoid the mouth cavity planting body of bone resorption.

The present invention can reach by following measure:

A kind of mouth cavity planting body, by head (1), body (2+3) and afterbody (4) constitute, head is provided with flange (7), afterbody is arc surfaced, body below the head end (5) is provided with cavity, cavity is successively by internal conical surface (6), inner cylinder face (10), inner cylinder face (11) and screwed hole (12) are formed, inner cylinder face (11) is provided with 2-6 circle-arc tooth tooth (13), it is characterized in that body is made of cylindrical section (2) and conical section (3), the upper face of cylindrical section (2) is provided with little screw thread (8), the upper face of conical section (3) is provided with external screw thread (9), external screw thread (9) also withdraws from gradually to cylindrical section (2) extension, extension also shoals external screw thread (9) gradually to conical section (3) bottom, is convex shape to afterbody and disappears.

Little screw thread occupies most of cylindrical section (2) surface area among the present invention, the length of cylindrical section is by fixed fundamental length B, add 0.618 integer or zero multiple constitutes, fundamental length B is obtained through technical finesse by the natural teeth data, numerical value is between 3.5 to 6.5mm, get the growth factor of golden section proportion 0.618 as column part, can make the rate of increase of the rate of increase of column part in the total length less than tapered segment, the ratio that makes both increments is roughly at 1/4 to 1/2, and this is also obtained through technical finesse by the natural tooth root shape data.

The total length of implantation body of the present invention is divided into two groups, can adopt short type group, its total length is to add that by a fixed fundamental length C 1 integral multiple or zero multiple are constituted, also can adopt the elongated group, its total length adds that by another fixed fundamental length D 2 integral multiple or zero multiple constitute.Fundamental length C and D are also obtained by statistical data, be be fit to implement behind Chinese's tooth defect implant operation, derive from general planting body length that actual implant operation counts, the shortest (unconventional implantation body is not within the rule, and " routine " refers to that size becomes the product serial commonly used of seriation).Short type group and the implantation body's distribution of lengths rule of elongated group or the definition of length series, be through technical finesse by the natural tooth root shape data, the data that count with actual dental implant surgical obtain, being adapted at implementing implant operation under mandibular bone different parts, different bone amount, the different sclerotin situation, and be easy to make a choice by the plantation dentist.Such distribution of lengths rule, making plantation, the dentist is easier makes a choice, the bionical better effects if of imitative natural tooth root, the Dental Implant result of use is good.

The invention has the beneficial effects as follows: 1, adopt head flanged pin structure, helping planting dentist's perception " puts in place ", and implantation hole hole portion there is a little useful bone squeezing effect, 2, adopt imitative dental root shaped configuration design, it is superior to have biomechanical property, implant easily and grasp, the easy perception of bone amount of compression etc. advantage, 3, external screw thread from shallow to deep, can obtain suitable bone squeezing effect, so can improve primary stability and help later stage stability, 4, implantation body's main part is made up of cylindrical section and conical section, both length ratios are through optimization process, bionical better effects if, 5, implantation body cooperates with taper seat between base station can obtain fabulous sealing and stability, 6, the anti-rotational structure of circle-arc tooth between implantation body and base station, not yielding, can bear bigger torsion, 7, but implementation platform transformational structure, it is the diameter that base station stretches out implantation body head end place, less than implantation body's end face diameter, the land that can make implantation body and base station is away from alveolar bone, thereby can reduce or avoid bone resorption.

Description of drawings:

Accompanying drawing is a kind of structural representation of the present invention.

Fig. 1 is a structural representation of the present invention,

Fig. 2 is the A-A cutaway view sketch map of Fig. 1,

Fig. 3 is the distribution of lengths sketch map,

Fig. 4 is the screw-thread ending structural representation.

Labelling among the figure: the inner cylinder face 11 of head 1, cylindrical section 2, conical section 3, afterbody 4, head end 5, internal conical surface 6, head flange 7, little screw thread 8, external screw thread 9, inner cylinder face 10, band circle-arc tooth, screwed hole 12, circle-arc tooth 13, screw-thread ending 14, short type length group 15, elongated length group 16.

The specific embodiment:

Below in conjunction with accompanying drawing the present invention is further described:

As shown in drawings, a kind of flanged pin taper shape adds the circle-arc tooth mouth cavity planting body, by head 1, body and afterbody 4 that cylindrical section 2 and conical section 3 are formed constitute, head is provided with flange 7, constitute by concavo-convex circular arc, implantation body's body is made of cylindrical section 2 and conical section 3, implantation body's afterbody 4 is arc surfaced, body middle cylindrical section 2 surfaces are provided with little screw thread 8, little screw thread 8 occupies most of cylindrical section 2 surface areas, conical section 3 surfaces are provided with external screw thread 9, extend and withdraw from and only occupy a small amount of cylindrical section 2 surface areas for 2 sections to cylinder, the degree of depth of external screw thread 93 sections small ends from the body to the circular cone shoal gradually, extending to afterbody 4 is convex shape ending 14 and fades away, head 1 end face has cavity, by internal conical surface 6, inner cylinder face 10, compositions such as inner cylinder face 11 and screwed hole 12, inner cylinder face 11 is provided with 2-6 circle-arc tooth 13, the face of cylinder 11 of internal conical surface 6 and band circle-arc tooth will be the main inner surface that cooperates with base station, and screwed hole 12 will be used for the bolted base station, the length of cylindrical section is to add that by fixed fundamental length B 0.618 integral multiple or zero multiple are constituted, and total length is divided into two groups, the total length of first group of short type group 15 is to add that by a fixed fundamental length C 1 integral multiple or zero multiple are constituted, and this part length of second group leader's type group 16 adds that by another fixed fundamental length D 2 integral multiple or zero multiple constitute.Numerical value 0.618 is a kind of length ratio, is become " golden section proportion ", only is a length increment factor in the present invention, is used to define the length of cylindrical section 2.Shape outside the part of implantation body except that head is to imitate dental root shaped, so that realize being similar to the such biomechanical effect of natural tooth root.

Claims

1. mouth cavity planting body, by head (1), body (2+3) and afterbody (4) constitute, head is provided with flange (7), afterbody is arc surfaced, body below the head end (5) is provided with cavity, cavity is successively by internal conical surface (6), inner cylinder face (10), inner cylinder face (11) and screwed hole (12) are formed, inner cylinder face (11) is provided with 2-6 circle-arc tooth (13), it is characterized in that body is made of cylindrical section (2) and conical section (3), the upper face of cylindrical section (2) is provided with little screw thread (8), the upper face of conical section (3) is provided with external screw thread (9), external screw thread (9) also withdraws from gradually to cylindrical section (2) extension, extension also shoals external screw thread (9) gradually to conical section (3) bottom, is convex shape to afterbody and disappears.

2. a kind of tooth-planting according to claim 1 is characterized in that little screw thread occupies most of cylindrical section surface area, and the length of cylindrical section is by fixed fundamental length B, adds 0.618 integer or zero multiple constitutes.

3. a kind of tooth-planting according to claim 1 is characterized in that the total length of the short type group in the total length sequence, is added that by a fixed fundamental length C 1 integral multiple or zero multiple constituted.

4. a kind of tooth-planting according to claim 1 is characterized in that the total length of the elongated group in the total length sequence, is added that by a fixed fundamental length D 2 integral multiple or zero multiple constituted.