CN104825241B - Anatomical root shape planting body and with its dental case, dental case manufacture method - Google Patents
Anatomical root shape planting body and with its dental case, dental case manufacture method Download PDFInfo
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- CN104825241B CN104825241B CN201510279928.2A CN201510279928A CN104825241B CN 104825241 B CN104825241 B CN 104825241B CN 201510279928 A CN201510279928 A CN 201510279928A CN 104825241 B CN104825241 B CN 104825241B
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Abstract
The invention provides a kind of anatomical root shape planting body and there is its dental case, dental case manufacture method.Wherein, anatomical root shape planting body includes：Implant portion, implant portion has base station putting hole, the perisporium of base station putting hole is more than or equal to default minimum wall thickness (MINI W.) with the wall thickness that the periphery in implant portion is formed, the shape of cross section cut by the top surface in implant portion of base station putting hole is non-circular first shape, the area of first shape is more than the first circular area in the first shape, the first circular center of circle is the center of the top surface in implant portion, and the minimum range of the periphery centered on radius to implant portion subtracts default minimum wall thickness (MINI W.).Technical scheme can effectively solve the problems, such as that anatomical root shape planting body of the prior art coordinates with existing base station and cause intensity to decline.
Description
Technical field
The present invention relates to dentistry field, is repaiied in particular to a kind of anatomical root shape planting body and with its tooth
Complex, dental case manufacture method.
Background technology
There is a variety of the geometry of planting body and base station joint face, its cross section is equal in the implant system of current commercialization
For circle.
The type of attachment of planting body and base station has outer connection and interior connection etc..
Wherein, the species of outer connection is broadly divided into two kinds according to its cross section geometric structure：Outer-hexagonal, inserted type
(spline).Outer-hexagonal structure refers to that planting body upper end is outwardly into hex surface, and such planting body is by Branemark systems
The mechanical structure of connection and driving torque spanner is developed.Outer-hexagonal has preferable lateral force resisting and anti-rotation effect,
Bootable dummy is accurately in place.But driller external hexagon connecting structure is a kind of pure stress lock eliminant connection, institute effectively passes through
, it is necessary to which certain preloading can just tighten, the bend loading caused by lasting occlusion side force can cause it for fixing screws transmission
Loosen and fatigability fractures, while outer-hexagonal adds dummy jaw gum height, superstructure needs bigger space.With set
The screw that base station is fixed in three kinds of implant systems of folded bolt structure is " Weak link ", " can be fractureed safely ".
Its shortcoming is：Flexural deformation caused by excessive load connected with planting body-base station it is not closely sealed be that outer connection is unstable
Fixed principal element, the high implant system of fit precision should be selected, the reparation of external connection design is linked to be entirety as far as possible, simultaneously
Reduce the width of dummy, the inclination of cusp for lowering dummy avoids excessive side force.
Interior connection is that planting body hat direction is recessed formula structure, can be divided into cylindric, circular cone according to its basic geometry
Shape.Its main feature is reduction of the vertical height of rebuilt component, is advantageous to aesthetic orthopaedics；Planting body inwall provides high intensity
Support, buffered vibration, disperseed lateral load, maintain interface stability connection, while the linkage interface of precision-fit every
The intrusion of microorganism absolutely.Pass through the interracial contact of certain taper, there is provided the self-locking action of mechanical connection, obtain preferably anti-rotation
Turn ability.Self locking taper is a kind of common mode for connecting metal parts using frictional force in engineering science, has ideal
Stable connection effect.
Dynamic degree of the planting body-base station joint face in either direction with taper connection (Ankylos) both less than with
Planting body-base station joint face of outer-hexagonal connection (Branemark), and without any rotation.And with taper connection
(Ankylos) planting body-effective dispersive stress of base station joint face energy preferably maintains the stability of base station.
Shortcoming：The seat of fatigue of interior hexagonal mostly occurs in base station and bearing, and planting body is intact, by changing base station,
It can repair again；And outer-hexagonal structural fatigue position is mostly occurred in planting body, can not be repaired if fractureing.
The shortcomings that interior connection system：1. planting body is thinning in connecting portion sidewall thickness, remitted its fury；2. the later stage adjusts when installing
The difficulty for rebuilding complex angle is larger.
1), the main flow planting body of commercialization at present is cylindrical thread or taper thread planting body, in long-term alternation
Stress in the presence of moment of torsion with easily loosening；
2), the rectilinear axis design of non-anatomical form planting body contacts after easily causing planting body implantation bone bed with adjacent teeth, goes out
Existing secondary adverse reaction；
3), the Implantation Time of non-anatomical form planting body needs to wait for just entering after several months alveolus knitting occurs for anodontia event
OK, treatment phase is relatively long；
4), upper jaw backteeth root of the tooth is neighbouring " maxillary sinus ", mandible posterior root of the tooth it is neighbouring " nervus alverlaris pipe ", two anatomic landmarks
Complex-shaped, position varies with each individual, if according to traditional Implant again after teeth socked healing, needs to rejudge
" maxillary sinus " or " nervus alverlaris pipe " position, or even need Maxillary Sinus or Mandibulotomy art to avoid these dissections
Position, big to patient trauma, complication is more.If implantation is consistent with root of the tooth profile while the upper jaw or mandible posterior is pulled out
Planting body, then process is become simple, safety a lot.
The problem of existing circular base station is not adapted to the anatomical root shape planting body of irregular shape；More planting bodies of backteeth are done
Integral the problem of can not being implanted directly into and assembling.
The content of the invention
It is a primary object of the present invention to provide a kind of anatomical root shape planting body and have its dental case, dental case
Manufacture method, intensity is caused to decline to solve the problems, such as that anatomical root shape planting body of the prior art coordinates with existing base station.
To achieve these goals, according to an aspect of the invention, there is provided a kind of anatomical root shape planting body, including：
Implant portion, implant portion have a base station putting hole, the perisporium of base station putting hole be more than with the wall thickness that the periphery in implant portion is formed or
Equal to default minimum wall thickness (MINI W.), the shape of cross section cut by the top surface in implant portion of base station putting hole is non-circular first shape
Shape, the area of first shape are more than the first circular area in the first shape, and the first circular center of circle is implant portion
Top surface center, the minimum range of the periphery centered on radius to implant portion subtracts default minimum wall thickness (MINI W.).
Further, the cross-sectional area of depth direction base station putting hole of the base station putting hole along implant portion is gradually reduced.
Further, default minimum wall thickness (MINI W.) is 0.5mm to 1.5mm.
According to another aspect of the present invention, there is provided a kind of dental case, including：Anatomical root shape planting body, anatomical root shape
Planting body is used to be implanted into alveolar bone, and anatomical root shape planting body is above-mentioned anatomical root shape planting body；Base station, base station are used to connect
Corona and anatomical root shape planting body, base station, which has, to be placed in the base station putting hole of anatomical root shape planting body, and is placed with base station
The root attachment structure of the perisporium fitting in hole.
Further, root attachment structure is interference fitted with base station putting hole.
Further, base station also includes hat attachment structure, and hat attachment structure is located at the first end of root attachment structure, and with root
Attachment structure is integrally formed.
Further, it is preced with attachment structure and the link position of root attachment structure is concordant with the end face of the first end in implant portion,
To form conversion platform.
Further, the outer peripheral face of root attachment structure has a taper along its length, the span of taper for 0.1 ° extremely
20°。
According to another aspect of the present invention, there is provided a kind of dental case, dental case include multiple planting bodies, each plantation
Body includes implant portion, and multiple implant portions are used to form root of the tooth in alveolar bone, and implant portion has base station putting hole, and base station has
The root attachment structure being connected with multiple implant portions, root attachment structure include：Embedded branch, embedded branch stretch into one of implant portion
In base station putting hole；Bottom surface is bonded, fitting bottom surface is corresponding with the top surface in other implant portion to be fitted on fitting bottom surface；Connection
Hole, connecting hole run through root attachment structure, and the spiral shell in implant portion corresponding with fitting bottom surface by the top surface of base station to bottom surface is bonded
The axis of pit overlaps with the axis of connecting hole.
Further, the screwed hole in implant portion is located at the lower section of base station putting hole, and base station passes through connector and implant portion
Connection.
Further, what the perisporium of base station putting hole in the implant portion coordinated with embedded branch was formed with the periphery in implant portion
Wall thickness is more than or equal to default minimum wall thickness (MINI W.), and the shape of cross section cut by the top surface in implant portion of base station putting hole is not rounded
The first shape of shape, the area of first shape are more than the first circular area in the first shape, the first circular circle
The heart is the center of implant portion top surface, to the default minimum range at minimum wall thickness (MINI W.) centered on radius.
According to another aspect of the present invention, there is provided a kind of dental case manufacture method, comprise the following steps：It is determined that dissection
The peripheral shape of root shape planting body and the center of implant portion top surface, and the minimum wall thickness (MINI W.) of anatomical root shape planting body is determined, implant portion
Top surface center for implant portion boundary rectangle center；Using center as the center of circle, with the outer of center to anatomical root shape planting body
It is radius that the minimum range in week, which subtracts minimum wall thickness (MINI W.), determines that first is circular in the top surface of anatomical root shape planting body；In anatomical root shape
The top surface of planting body determines first shape, the shape of cross section that first shape is cut by base station putting hole by top surface, puts base station
Put the distance between the perisporium in hole and the periphery of anatomical root shape planting body and be more than or equal to minimum wall thickness (MINI W.)；Selected base station putting hole
Depth and taper, and base station putting hole is determined according to first shape；The root attachment structure of base station is determined according to base station putting hole
Peripheral shape.
Applying the technical scheme of the present invention, the wall thickness everywhere in implant portion more can uniformly ensure minimum wall thickness (MINI W.), and then
Ensure the load ability in implant portion, the area of base station putting hole is larger, can place thicker base station, improves load ability.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the schematic diagram in dental case implantation alveolar bone according to an embodiment of the invention；
Fig. 2 shows the structural representation of the dental case of more roots of the tooth according to an embodiment of the invention；
Fig. 3 shows the structural representation of the dental case of single root of the tooth according to an embodiment of the invention；
Fig. 4 shows that the top surface of the anatomical root shape planting body of single root of the tooth dental case according to an embodiment of the invention is overlooked
Figure；
Fig. 5 shows the dimensional structure diagram of the base station of the dental case of more roots of the tooth according to an embodiment of the invention；
Fig. 6 shows the base station and anatomical root shape planting body of the dental case of more roots of the tooth according to an embodiment of the invention
Structural representation；And
Fig. 7 shows the stereochemical structure signal of the base station of the dental case of more roots of the tooth according to another embodiment of the present invention
Figure.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, anatomical root shape planting body；11st, implant portion；111st, base station putting hole；111a, first shape；111b, the first circle
Shape；112nd, conversion platform；20th, base station；21st, root attachment structure；211st, embedded branch；212nd, it is bonded bottom surface；213rd, connecting hole；22、
It is preced with attachment structure；30th, corona；81st, alveolar bone；82nd, gum.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figures 1 to 6, according to an embodiment of the invention, anatomical root shape planting body includes implant portion 11, and implant portion 11 has
There is base station putting hole 111, the perisporium of base station putting hole 111 is more than or equal to minimum with the wall thickness that the periphery in implant portion 11 is formed
Wall thickness, the shape of cross section cut by the top surface in implant portion 11 of base station putting hole 111 are first shape 111a, first shape
111a area is more than the first circular 111b area, and the first circular 111b center of circle is the center of the top surface in implant portion 11, partly
The minimum range of periphery centered on footpath to implant portion 11 subtracts minimum wall thickness (MINI W.).Use the anatomical root shape planting body of this structure can be with
The stress of balanced anatomical root shape planting body, improve load ability.
The determination method at the center of the top surface in implant portion 11 is the boundary rectangle for the top surface for doing implant portion 11, and with addition
The center for connecing rectangle is the center of the top surface in implant portion 11.
When carrying out dental restortion, if implantation anatomical root shape planting body 10, it is necessary first to manufacture anatomical root according to the situation of patient
Shape planting body 10, its manufacturing process are to clap CT, CBCT to the tooth of suffering from for being worth to be pulled out without reserve, tooth is obtained according to CT, CBCT number
Root three-dimensional data, by computer aided design software design anatomical form root of the tooth, base station 20 and the structure of corona 30 using EBM,
The technology quick Fabrication titanium such as LBM, CAM or full porcelain anatomical form tooth root planting body.Due to the shape of the anatomical root shape planting body 10
Shape is manufactured according to the specific tooth nest shape of different patients, so it is irregular shape.
Dental case needs to bear the multi-acting forces such as shearing, moment of torsion when in use, and stress is more complicated, the tooth of integral type
Dummy needs overall reparation if damaging in use, and this just needs to re-start operation, repair time length, cost height.
In order to overcome this problem, dental case is generally divided into tooth root planting body, base station 20 and corona 30.Wherein, tooth root planting body is planted
Enter and be used to be connected with alveolar bone 81 in tooth nest.Base station 20 is fixedly installed on tooth root planting body, for connect tooth root planting body with
Corona 30, base station 20 and tooth root planting body have two kinds of types of attachment, and one kind is base station 20 and tooth root planting body by integral forming, another
Kind is detachably connected for base station 20 and tooth root planting body, for example, base station 20 is placed on hole by providing holes on tooth root planting body
It is interior, and be fastenedly connected by screw etc..Corona 30 is fixedly installed on base station 20.The dental case of this structure is easier more
Change, the part of damage can be only changed when base station 20 or the damage of corona 30, such holding time is short, and cost is low.
For split type dental case, anatomical root shape planting body 10 is shaped as irregular shape, and existing skill
Generally circular for installing the hole of base station 20 in art, the part that base station 20 is connected with anatomical root shape planting body 10 is usually cylinder
Shape or cone.The wall thickness everywhere that this results in anatomical root shape planting body 10 is inconsistent, and some places wall thickness is big, some places wall
It is thick small, limit to the area of base station 20, reduce the load ability of anatomical root shape planting body 10.To ensure anatomical root shape planting body
10 have preferable load effect, then can only reduce aperture, and this allows for the portion that base station 20 is connected with anatomical root shape planting body 10
Divide relatively thin, the load scarce capacity of base station 20, turn into the weak spot of whole dental case load.
In order to realize preferable repairing effect, the durability of dental case is improved.The invention provides one kind to dissect
Root shape planting body 10, the anatomical root shape planting body 10 include implant portion 11, and implant portion 11 has base station putting hole 111, and base station is put
Put the perisporium in hole 111 and be more than or equal to default minimum wall thickness (MINI W.), base station putting hole with the wall thickness that the periphery in implant portion 11 is formed
111 shape of cross section cut by the top surface in implant portion 11 is non-circular first shape 111a, first shape 111a face
Product is more than the area of the first circular 111b in first shape 111a, and the first circular 111b center of circle is implant portion 11
The center of top surface, the minimum range of the periphery centered on radius to implant portion 11 subtract default minimum wall thickness (MINI W.).Such a structure
In the case that base station putting hole 111 can ensure that the wall thickness everywhere in implant portion 11 is not less than minimum wall thickness (MINI W.), implant portion 11 with
Load area between the base station 20 being connected is bigger, and load ability is relatively good, no load weak spot, better reliability.
Minimum wall thickness (MINI W.) value can determine concrete numerical value according to different demands, in the present embodiment, default minimum wall thickness (MINI W.)
Span be 0.5mm to 1.5mm.
Shape of cross section is used in the prior art as circle, during perforate, after determining minimum wall thickness (MINI W.), the circular placement of formation
Hole, because the peripheral shape of anatomical root shape planting body 10 is irregular, so after forming circular putting hole, wall unevenness, easily
Form weak load-bearing point at the minimum wall thickness (MINI W.) in implant portion 11, and circular putting hole by minimum wall thickness (MINI W.) limited its area compared with
Small, load is indifferent.
In the present embodiment, after the peripheral shape for determining anatomical root shape planting body 10, according to the position that need to be repaired and using need
Ask and search document or can rule of thumb select the minimum wall thickness (MINI W.) in implant portion 11, the end face center in implant portion 11 to implant portion 11
There is minimum range in the distance everywhere of periphery, the minimum range subtracts the radius that minimum wall thickness (MINI W.) is the first circular 111b.Shape
Into after the first circular 111b, the position that wall thickness is more than minimum wall thickness (MINI W.), to expand the area of base station putting hole 111, can be carried with thin
High bearing capacity, as long as ensureing that the wall thickness everywhere in implant portion 11 is more than or equal to minimum wall thickness (MINI W.).The base station being consequently formed
The area of putting hole 111 is bigger than the first circular 111b, can carry bigger power, and ensure the bearing capacity in implant portion 11.
The shape of the cross section of base station putting hole 111 can turn into any shape according to different structures, as long as ensureing first shape
111a area is more than the first circular 111b area.
In the present embodiment, the cross-sectional area of depth direction base station putting hole 111 of the base station putting hole 111 along implant portion 11
It is gradually reduced.That is, it is in certain taper along the perisporium of the depth direction base station putting hole 111 in implant portion 11.
Preferably, along the depth direction of base station putting hole 111, the wall thickness in the implant portion 11 on same cross section is consistent,
The shape of cross section of the base station putting hole 111 in the implant portion 11 on i.e. same cross section and the cross section shape of the periphery wall of implant portion 11
Shape is similar, and (shape of cross section of the similar shape of cross section for referring to base station putting hole 111 and the periphery wall of implant portion 11 herein is
Similar figures).This makes it possible to ensure the overall structural strength of anatomical root shape planting body 10 than more uniform, load ability is relatively good,
Without load weak spot, better reliability.
, need to be in anatomical root shape planting body 10 if the anatomical root shape planting body 10 is connected by parts such as screws with base station 20
Thread mill drilling.The position of screwed hole should be in the lower section of base station putting hole 111.Due to the transmission of power and carrying master in this structure
To rely on base station 20 and anatomical root shape planting body 10, and disconnected screw, therefore, screw hole can be relatively thin, thus sets
Screwed hole does not interfere with the structural strength of anatomical root shape planting body 10 yet.
In the present embodiment, there is provided a kind of dental case, the dental case include anatomical root shape planting body 10, the and of base station 20
Corona 30.Wherein, the anatomical root shape planting body 10 is above-mentioned anatomical root shape planting body 10, and it has implant portion 11, implant portion
Base station putting hole 111 is provided with 11, base station 20 is placed in base station putting hole 111, and corona 30 is placed on base station 20, with structure
Into dental case.
Base station 20 is used to connect corona 30 and implant portion 11, and base station 20, which has, to be placed in base station putting hole 111, and and base
The root attachment structure 21 of the perisporium fitting of platform putting hole 111.That is, the root attachment structure 21 of base station 20 is placed on matrix putting hole
After interior, on same cross section, the shape of cross section of the root attachment structure 21 of base station 20 and the base station putting hole 111 in implant portion 11
Shape of cross section is consistent, to ensure that root attachment structure 21 and the base station putting hole 111 in implant portion 11 coordinate reliably, can effectively pass
Power is passed, carries snap-in force, while prevents circular base station 20 from coordinating the issuable torsion when being engaged with circular hole, is prevented spin-ended de-.
In order to be connected with corona 30, base station 20 also includes hat attachment structure 22, and hat attachment structure 22 is located at root connection
The first end of structure 21, the second end of root attachment structure 21 are inserted in base station putting hole 111.In order to ensure structural strength, hat connects
Binding structure 22 is integrally formed with root attachment structure 21.
If base station 20 and a planting body coordinate, the root attachment structure 21 of base station 20 can be with the mistake of base station putting hole 111
It is full of cooperation, can not be so drilled on base station 20, ensures that the structural strength of base station 20 is more preferable, process when being repaired is more
It is few, it is possible to reduce treatment cycle, to improve efficiency.
Certainly, the root attachment structure 21 of base station 20 can also be connected by connectors such as screws with planting body, if passing through spiral shell
Nail etc. is attached, then needs to open up screwed hole on planting body, screwed hole is located at the lower section of base station putting hole 111, in base station
The through hole opened up on 20 through base station 20 passes through for screw, and screw coordinates to fix base station 20 after passing through through hole with screwed hole.
In order to prevent bacterium from being grown in the gap of dental case, ensureing oral health, the top surface in implant portion 11 is plane,
After base station 20 is placed in matrix putting hole, the hat attachment structure 22 of base station 20 forms one with the link position of root attachment structure 21
Individual platform, the plane of this platform and the top surface in implant portion 11 at grade, and form conversion platform 112.So work as tooth
After the completion of dummy plantation, epithelium and gingival connective tissue can grow along the toe-in of conversion platform 112 and by implant portions 11
The gap plugging between gap, implant portion 11 and base station 20 between alveolar bone 81 gets up, to prevent bacterium from being grown in gap
It is raw, ensure oral cleaning and health.
Originally the stress concentrated between implant neck and cortex of bone can be transferred to plantation by conversion platform 112 to center
On the contact surface of body and foundation pile platform, so that the stress of cortex of bone reduces around implant neck, but it can cause in planting body
Entreat the stress increase of screw.
In the implant system of traditional concordant docking, the microgap of joint face and fine motion degree frequently result in planting body-base
Gingiva tissue inflammation at the joint face of platform 20, and then cause the inflammatory infiltration of bone tissue under gum, implant neck finally occurs
The bone information of surrounding.Finite-Element Study shows the planting body of concordant docking neck form, after secondary operation connects base station 20, kind
Implant neck surrounding socket bone 81 starts to rebuild and absorbed, and reached after 1 year 1 below the joint face of planting body-base station 20~
1.5mm place.Previously withFor the implant system of representative, bone information necessarily occurs in crest of alveolar ridge after repair,
Its uptake does not wait and the most obvious in the 1st year, and this absorption is even considered as inevitable, and is formulated into plantation successfully
One of standard.
Degidi etc. establishes platform conversion plantation animal experimental model, and identical planting body is equipped with into being cured for different-diameter
The upper and lower jaw backteeth area that base station 20 is planted in dog is closed, the diameter of gingival former 20 and stress matcher are Normal group,
The diameter of gingival former 20 is analog platform conversion group less than stress person, carries out conventional non-submersible plantation.Respectively at art
Sample is taken out after 7,14,28 days afterwards, specific stain, analyzes hard and soft tissue healing state.As a result find, there occurs soft or hard for control group
The height of tissue is lost, and analog platform conversion group does not almost occur, that is to say, that the plantation of conventional method when healing 1 month
Body shrinking back there occurs alveolar bone 81 and gum 82, and platform conversion group remains to keep good height.
There is scholar's report to be tightly wrapped around Abutment 20 in planting body using soft tissue after platform conversion regime reparation
Cuff is formed in top platform, makes epithelial cuff stable, bacterium is not easy to cross planting body platform and being invaded downwards along neck causes
Neck bone information, the Marginal bone resorption after planting body heavy burden can be further prevented, improve the long-term effect that plantation is repaired.
The base station 20 of platform conversion method minor diameter can avoid the stress concentration of bone, make bone information away from bone tissue
Phenomenon is reduced or eliminated.In the design of platform conversion, the slightly narrow neck of base station 20 can wrap the soft tissue layer of thickness, a side
Face avoids the problem of neck of base station 20 saturating metallochrome, on the other hand prevents food build-up in the joint face of planting body-base station 20,
The bone tissue for preventing bacterium infiltration from arriving under soft tissue and soft tissue, and then cause the generation of bone information.
Shown in Figure 2, the cross-sectional area for being preced with the bottommost of attachment structure 22 is less than the top of root attachment structure 21 (root company
The first end of binding structure 21) cross-sectional area.
The outer peripheral face of root attachment structure 21 has taper along its length, and the span of taper is 0.1 ° to 20 °.Root connects
The taper of binding structure 21 can be chosen according to Morse tapers, with base station putting hole 111 so when base station 20 is rotated by moment of torsion
More fastened with credit union.
If what dental case to be repaired is backteeth, then toilet article have multiple roots of the tooth, and multiple roots of the tooth mutually diverge to, if will
Multiple roots of the tooth are integrally formed, and on the one hand are inconvenient to plant, and on the other hand need one larger wound of manufacture could be by tooth
Root is planted to alveolar bone 81, so big to patient trauma.The present invention provides a kind of dental case, and dental case includes multiple plants
Body portion 11, multiple implant portions 11 are used to form root of the tooth in dentale, are mutually not connected between each implant portion 11, and be placed individually into
Wound area can be reduced in dentale.Implant portion 11 has base station putting hole 111, and base station 20 has to be connected with multiple implant portions 11
Root attachment structure 21, root attachment structure 21 includes embedded branch 211, fitting bottom surface 212 and connecting hole 213.Will by base station 20
Multiple implant portions 11 connect.Embedded branch 211 is stretched into the base station putting hole 111 in one of implant portion 11, and the insertion branch 211 is most
The good implant portion 11 maximum with cross-sectional area is connected, and can so be done the cross-sectional area of embedded branch 211 greatly, to ensure load energy
Power.Fitting bottom surface 212 is bonded with the top surface in other implant portion 11, and is bonded top surface of the bottom surface 212 with corresponding implant portion 11
Fitting, connecting hole 213 run through root attachment structure 21 by the top surface of base station 20 to bottom surface 212 is bonded, and corresponding to fitting bottom surface 212
Implant portion 11 in the axis of screwed hole overlapped with the axis of connecting hole 213.Bottom surface 212 is bonded to be used for and other implant portions
Base station 20, is then connected, realizes a base station 20 by multiple implant portions by 11 top surface fitting by connector with implant portion 11
11 connections.
Screwed hole in implant portion 11 is located at the lower section of base station putting hole 111, and base station 20 passes through connector and implant portion 11
Connection.
Preferably, the perisporium of the base station putting hole 111 in the implant portion 11 coordinated with embedded branch 211 and the periphery in implant portion 11
The wall thickness formed is more than or equal to minimum wall thickness (MINI W.), the cross section shape cut by the top surface in implant portion 11 of base station putting hole 111
Shape is first shape 111a, and first shape 111a area is more than the first circular 111b area, the first circular 111b center of circle
For the center of the top surface in implant portion 11, to the minimum range at minimum wall thickness (MINI W.) centered on radius.
The root attachment structure 21 of base station 20 and the external shape fits of anatomical root shape planting body 10.
The distance of the bottom margin of the hat attachment structure 22 of base station 20 and the edge of the top surface of anatomical root shape planting body 10 is
0mm~5mm.
The height of the hat attachment structure 22 of base station 20 is 0.1mm~5mm.
The height of the root attachment structure 21 of base station 20 is 0.1mm~20mm.
2~3 roots of the tooth of backteeth are formed by single anatomical root shape planting body 10 respectively, each anatomical root shape planting body 10
Upper surface be level, select the insertion branch 211 of one thick " root of the tooth " installation base station 20, the fitting of 20 bands of base station
Bottom surface 212 contacts with remaining root surface, is connected by attachment screw with these roots of the tooth.
Stayed between the bottom of the root attachment structure 21 of base station 20 and the bottom of the base station putting hole 111 of anatomical root shape planting body 10
There is 0.5~2mm.
The bottom of anatomical root shape planting body 10 can truncate 0.1~2mm, or circle Passivation Treatment, to avoid stress concentration.
By three dimension finite element analysis, it was demonstrated that the base station 20 is better than typical round base station 20.By taking labial teeth as an example, equally
In the case of reserving planting body most thin-walled 1.4mm, the base station 20 (oval) of suitability increases than the circular contact area of base station 20
40%, meet with stresses reduction 30%.The stress born is small, and the risk that base station 20 fractures reduces.
Referring to Fig. 4, after the peripheral shape in implant portion 11 for determining anatomical root shape planting body 10, in the top surface in implant portion 11
The heart to implant portion 11 periphery distance everywhere it was determined that due to the load ability in implant portion 11 to be ensured, thus can be true
The minimum wall thickness (MINI W.) in body portion 11 is colonized, subtracting minimum wall thickness (MINI W.) with the minimum distance in the periphery at center to implant portion 11 obtains the first circle
Shape 111b radius, using center as the i.e. available first circular 111b in the center of circle.Obtaining can be as needed after the first circular 111b
The shape of cross section of base station putting hole 111 is determined, if ensure the shape of cross section of base station putting hole 111, namely first shape
111a area is more than the first circular 111b.The inhomogeneities of the wall thickness everywhere of implant portion 11 can be so reduced, also can
Ensure the load demand in implant portion 11, while the contact area of base station 20 and implant portion 11 can be increased, improve load ability.
Dental case manufacture method comprises the following steps：
The position at the center of the peripheral shape of anatomical root shape planting body 10 and the top surface in implant portion 11 is determined, and determines to dissect
The minimum wall thickness (MINI W.) of root shape planting body 10, the center of the top surface in implant portion 11 are the center of the boundary rectangle in implant portion 11；
Using center as the center of circle, minimum wall thickness (MINI W.) is subtracted as half using the minimum range of center to the periphery of anatomical root shape planting body 10
Footpath, the first circular 111b is determined in the top surface of anatomical root shape planting body 10；
Determine that first shape 111b, first shape 111b are base station putting hole 111 in the top surface of anatomical root shape planting body 10
The shape of cross section cut by top surface, make between the perisporium of base station putting hole 111 and the periphery of anatomical root shape planting body 10 away from
From more than or equal to minimum wall thickness (MINI W.)；
The depth and taper of selected base station putting hole 111, and base station putting hole 111 is determined according to first shape 111b；
The peripheral shape of the root attachment structure 21 of base station 20 is determined according to base station putting hole 111, makes root attachment structure 21
Periphery is bonded with the perisporium of base station putting hole 111.
The dental case load ability determined by above-mentioned dental case manufacture method is good, service life length.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：The root of base station
The profile of attachment structure and the anatomical root shape planting body profile of irregular shape are more close, and the remaining planting body wall thickness of surrounding is more equal
It is even；
Compared with typical round base station, the former can be compared thick special-shaped suitability base station due to the suitability of shape
Base station, so as to reduce the risk that base station fractures；Circular base station has done meeting thick because its profile is not adapted to planting body profile
Have a surplus the risk that implant wall is excessively thin or even penetrates of reserving seed for planting；
For base station compared with typical round base station, the former has anti-rotation effect, can prevent due to each effect to masticatory force
The base station rotation of initiation comes off.
For base station compared with typical round base station, the former position precision is higher, can more be accurately positioned the position of dummy；
0.5~2mm distances are left between special-shaped suitability base station bottom and planting body inwall, sink to staying in snap-in force for base station
Go out space；
Front and rear tooth dissection shape tooth root planting body bottom is not necessarily completely consistent with original root form, and bottom can truncate 0.1
~2mm, or circle Passivation Treatment, to reduce the stress concentration of planting body bottom sclerotin.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
- A kind of 1. anatomical root shape planting body, it is characterised in that including：Implant portion (11), the implant portion (11) have a base station putting hole (111), the perisporium of the base station putting hole (111) with The wall thickness that the periphery in implant portion (11) is formed is more than or equal to default minimum wall thickness (MINI W.), the base station putting hole (111) by The shape of cross section that the top surface of the implant portion (11) is cut is non-circular first shape (111a), the first shape The area of (111a) is more than the area of first circular (111b) in the first shape (111a), and described first is circular The center of circle of (111b) is the center of the top surface of the implant portion (11), and radius is the center to the periphery of the implant portion (11) Minimum range subtract default minimum wall thickness (MINI W.).
- 2. anatomical root shape planting body according to claim 1, it is characterised in that the base station putting hole (111) is along described The cross-sectional area of base station putting hole (111) is gradually reduced described in the depth direction in implant portion (11).
- 3. anatomical root shape planting body according to claim 1, it is characterised in that the default minimum wall thickness (MINI W.) is 0.5mm To 1.5mm.
- A kind of 4. dental case, it is characterised in that including：Anatomical root shape planting body (10), the anatomical root shape planting body (10) are used to be implanted into alveolar bone (81), the anatomical root Shape planting body (10) is the anatomical root shape planting body (10) described in claims 1 to 3；Base station (20), the base station (20) are used to connect corona (30) and the anatomical root shape planting body (10), the base station (20) have and be placed in the base station putting hole (111) of the anatomical root shape planting body (10), and with the base station putting hole (111) the root attachment structure (21) of perisporium fitting.
- 5. dental case according to claim 4, it is characterised in that described attachment structure (21) is placed with the base station Hole (111) is interference fitted.
- 6. dental case according to claim 4, it is characterised in that the base station (20) also includes hat attachment structure (22), the hat attachment structure (22) positioned at described attachment structure (21) first end, and with described attachment structure (21) It is integrally formed.
- 7. dental case according to claim 6, it is characterised in that the hat attachment structure (22) is connected knot with described The link position of structure (21) is concordant with the end face of the first end of the implant portion (11), to form conversion platform (112).
- 8. dental case according to claim 4, it is characterised in that the outer peripheral face of described attachment structure (21) is along length Direction has taper, and the span of the taper is 0.1 ° to 20 °.
- 9. a kind of dental case, it is characterised in that the dental case includes multiple planting bodies, and each planting body includes planting Body portion (11), the multiple implant portion (11) are used to form root of the tooth in alveolar bone, and the implant portion (11) is placed with base station Hole (111), base station (20) have the root attachment structure (21) being connected with the multiple implant portion (11), root attachment structure (21) bag Include：Embedded branch (211), the embedded branch (211) stretch into the base station putting hole of one of them implant portion (11) (111) in；It is bonded bottom surface (212), fitting bottom surface (212) the fitting fitting bottom surface corresponding with the top surface in other implant portion (11)；Connecting hole (213), the connecting hole (213) run through institute by top surface to fitting bottom surface (212) of the base station (20) State root attachment structure (21), and the axis of the screwed hole in implant portion (11) corresponding with fitting bottom surface (212) with it is described The axis of connecting hole (213) overlaps；The perisporium of the base station putting hole (111) in the implant portion (11) coordinated with the embedded branch (211) is outer with implant portion (11) Week, the wall thickness that is formed was more than or equal to default minimum wall thickness (MINI W.), the base station putting hole (111) by the implant portion (11) The shape of cross section that cuts of top surface be non-circular first shape (111a), the area of the first shape (111a) is more than position In the area of first circular (111b) in the first shape (111a), described first circular (111b) center of circle is implant portion (11) center of top surface, radius are default minimum range of the center at minimum wall thickness (MINI W.).
- 10. dental case according to claim 9, it is characterised in that the screwed hole in the implant portion (11) is located at institute The lower section of base station putting hole (111) is stated, the base station (20) is connected by connector with the implant portion (11).
- 11. a kind of dental case manufacture method, it is characterised in that comprise the following steps：The peripheral shape of anatomical root shape planting body (10) and the center of implant portion (11) top surface are determined, and determines that anatomical root shape is planted The minimum wall thickness (MINI W.) of body (10), the center of the top surface of implant portion (11) are the center of the boundary rectangle of implant portion (11)；Using the center as the center of circle, with the minimum range of center to the periphery of the anatomical root shape planting body (10) subtract it is described most Small wall thickness is radius, and first circular (111b) is determined in the top surface of the anatomical root shape planting body (10)；First shape (111b) is determined in the top surface of the anatomical root shape planting body (10), the first shape (111b) is base station The shape of cross section that putting hole (111) is cut by the top surface, make the perisporium and anatomical root shape planting body of base station putting hole (111) (10) the distance between periphery is more than or equal to the minimum wall thickness (MINI W.)；The depth and taper of the base station putting hole (111) are selected, and the base station is determined according to the first shape (111b) Putting hole (111)；The peripheral shape of the root attachment structure (21) of base station (20) is determined according to the base station putting hole (111).
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| CN201510279928.2A CN104825241B (en) | 2015-05-27 | 2015-05-27 | Anatomical root shape planting body and with its dental case, dental case manufacture method |
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| CN106420080A (en) * | 2016-08-26 | 2017-02-22 | 北京大学口腔医院 | Base, dental prosthesis and making method of base |
| CN108542524A (en) * | 2018-05-16 | 2018-09-18 | 广州市健齿生物科技有限公司 | Bionic dental implant with small teeth and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000060872A (en) * | 1998-08-21 | 2000-02-29 | Kaneko Agricult Mach Co Ltd | Dental implant and transplantation method |
| KR100896449B1 (en) * | 2007-06-28 | 2009-05-14 | (주)오리엔트엠지 | Double contact type dental implant system |
| KR101026837B1 (en) * | 2009-02-12 | 2011-04-04 | 한국과학기술원 | Device for using in tooth implant and fixture thereof |
| CN101530350B (en) * | 2009-04-21 | 2011-03-30 | 赵大国 | Bionic dental implant and main root thereof |
| KR20110026166A (en) * | 2009-09-07 | 2011-03-15 | 정순호 | A implant unit |
| CN101947139B (en) * | 2010-10-21 | 2013-10-23 | 赵大国 | Bionic dental implant and abutment and seminal root thereof |
| CN103417309A (en) * | 2012-05-21 | 2013-12-04 | 北京爱康宜诚医疗器材股份有限公司 | Asymmetric dental implant |
| CN102715961B (en) * | 2012-07-11 | 2015-02-04 | 唐志辉 | Individualized anatomical type tooth root implant |
| CN204698726U (en) * | 2015-05-27 | 2015-10-14 | 孙冬磊 | Anatomical root shape implantation body and there is its dental case |
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