CN105266874B - A kind of type osteotomy surgical guides of upper jaw Le Fort I and its design method - Google Patents
A kind of type osteotomy surgical guides of upper jaw Le Fort I and its design method Download PDFInfo
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- CN105266874B CN105266874B CN201410483823.4A CN201410483823A CN105266874B CN 105266874 B CN105266874 B CN 105266874B CN 201410483823 A CN201410483823 A CN 201410483823A CN 105266874 B CN105266874 B CN 105266874B
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Abstract
The present invention discloses a kind of maxilla Le Fort I type osteotomy surgical guides, to aid in 4 pieces of titanium plates being fixed to maxilla antetheca in operation to correct Craniofacial anomalies, guide plate includes fence body and pilot hole, the fence body includes left side and used and two structures being separated from each other in right side, and two structures are respectively used to left side and the operation of right maxillary bone during use；The outer surface of each structure is provided with osteotomy line and multiple pilot holes, and each pilot hole and the structure are run through and are provided with positioning hole through the osteotomy wire tag hole of the structure provided with multiple along the osteotomy line；One end of the close nasal cavity side of two structures is respectively equipped with apertura piriformis edge position limiting structure, and at the apertura piriformis edge, the lower section of position limiting structure is provided with spina nasalis anterior position position limiting structure；The intrastructural surfaces are provided with guiding gutter.Invention additionally discloses a kind of method for designing above-mentioned maxilla Le Fort I type osteotomy surgical guides.
Description
Technical field
The present invention relates to the type osteotomy servicing unit fields of upper jaw Le Fort I, in particular to a kind of upper jaw Le
The type bone-culting operation guide plates of Fort I and its design method.
Background technology
Maxilla Le Fort I type osteotomies are the most frequently used art formulas that orthognathic surgery rescues all kinds of maxillary bone sex deviations.
Can be to determine the postoperative aesthetic of patient in art by maxillary teeth bone section accurate movement to the position of pre-operative surgical conceptual design
With the most critical factor of functional effect.
Traditional surgical procedure be after maxilla is sectioned along Le Fort I type osteotomy lines, it is true using middle bite guide
Determine the shift position of maxillary teeth bone section.Traditional clinical method is, preoperative to complete model surgery according to design operation plan, makes
The middle bite guide of self curing plastic material.In art based on mandibular, determine that maxillary teeth bone section moves using bite guide
New position afterwards.While this conventional method can obtain more satisfied clinical effectiveness, there is also it is more obvious the defects of.
Middle bite guide it is determined that before and after dentale section to shift position when good results, but can not accurately instruct art dens in dente bone section
The movement of horizontal plane and vertical direction.It is existing multiple studies have shown that the dentale fragment position that obtains of this method and design attitude exist compared with
Large deviation.The research of such as McCance scholar points out, during using middle bite guide, although having carried out preoperative conscientiously design
And the accurate operation in art, the position deviation in 0-10mm with vertical direction in the horizontal direction be present.The scholars such as Sharifi
Research then point out, cause this deviation essentially consist in two aspect the reason for：One reason be facebow horizontal plane with it is true
Difference be present between real orbitomeatal plane；Another reason is patient in erect position and condyle position when keeping central occlusion and trouble
Difference be present in condyle position of the person in dorsal position on operating table.In clinical position under patient face 1/3 vertical height determination
The clinical experience of surgical doctor is depended in many degree.
As developing rapidly for digital surgical technic is stung with increasing clinical practice, virtual operation design, digitlization
The technology such as guide plate and surgical navigational of conjunction starts to be used to determine the new position of maxilla Le Fort I type osteotomy dens in dente bone sections.
The shift position of maxillary teeth bone section is determined using airmanship, at present rarely seen case report, there has been no coincidence statistics meaning
The accuracy research of sample size.Itself there is 1-2mm systematic error in current airmanship, while navigator fix ball is fixed
Steadiness can also have a strong impact on the accuracy of navigation, and above-mentioned factor may have a strong impact on the accuracy of art dens in dente bone section positioning.
The technology that designs and produces of digitlization bite guide has been mature on the whole at present.Studies have shown that and conventional snap guide plate phase at present
Than digitlization bite guide can significantly improve the precision of dentale fragment position movement.Due to digitizing the application method of bite guide
(new position that maxillary teeth bone section is determined using the position of mandibular) similar with conventional snap guide plate, therefore digitize bite guide
The determination dentale section level that can not be felt quite pleased to vertically to shift length.Led based on the new operation of maxilla front wall design
Plate, the dentale fragment position of Design is accurately realized in patient's body, is the one of current orthognathic surgery field Design of digital
Individual study hotspot.The scholars such as Mohamed F, B.Philippe, Biao Li and Shizhu Bai sets forth different solutions
Certainly scheme.New surgical guide that these scholars design and produce all is to design Novel hand using maxilla antetheca or simultaneously denture
Art guide plate, and then determine the position after the movement of dentale section.Individual operation guide plate based on maxilla antetheca, in computer
After completing virtual operation, based on maxilla front wall design individual operation guide plate, the new position for the maxilla that virtual operation is determined
Put and be transferred in art, for such technical scheme not against the variable mandibular in position, existing literature shows the clinic of desirable satisfaction
Effect.But because maxilla antetheca is comparatively flat, guide plate self poisoning is likely to occur deviation, therefore these surgical guides
It is determined that, it is necessary to carry out firm fixation to guide plate itself first during dentale section new position, step is relatively complicated.Existing document report
Such guide plate occurred in road is because commodity in use titanium plate titanium follows closely the maxilla after fixed movement, therefore this kind of guide plate is more by two
Individual guide plate composition, one is osteotomy guide plate, and another is fixation guide plate, relatively complicated when being used in operation.Meanwhile use
The commercialization titanium plate that bends fixes dentale section, takes more, thereby increases and it is possible to produces stress due to titanium plate and not being bonded for bone face.
Therefore, clinic is there is an urgent need to explore new surgical guide at present, more accurately to determine the position of maxillary teeth bone section,
Operation precision is improved, improves clinical therapeutic efficacy.
The content of the invention
The present invention provides a kind of type osteotomy surgical guides of upper jaw Le Fort I and its Individual design method, to
The position of maxillary teeth bone section is more accurately determined, operation precision is improved, improves clinical therapeutic efficacy.
To reach above-mentioned purpose, the invention provides a kind of maxilla low level fracture bone-culting operation guide plate, to perform the operation
Individuation titanium plate is fixed to maxilla antetheca to correct Craniofacial anomalies, including fence body and pilot hole by middle auxiliary, wherein：
The fence body includes two structures being separated from each other, and two structures are respectively used to left side during use
With the operation of right maxillary bone；The outer surface of each structure is provided with osteotomy mark line and multiple pilot holes, along institute
State osteotomy mark line and be provided with multiple osteotomy wire tag holes for extending vertically through the structure, corresponding each pilot hole vertically passes through
Wear the structure and be provided with a positioning hole communicated with the pilot hole；Close nasal cavity side one end difference of two structures
Provided with apertura piriformis edge position limiting structure, at the apertura piriformis edge, the lower section of position limiting structure is provided with spina nasalis anterior position position limiting structure；
The structure back side is provided with guiding gutter；Wherein
The fence body, maxilla antetheca is covered in during for performing the operation, to ensure the accurate in place of the surgical guide；
The osteotomy mark line, for marking the osteotomy line position of maxilla Le Fort I type osteotomies；
The osteotomy wire tag hole, for passing through the osteotomy wire tag hole in maxilla Le Fort I type osteotomies
In maxilla front wall, to mark osteotomy line position on maxilla；
The pilot hole and the positioning hole, for supplying grooved bit to exist through the pilot hole and the positioning hole in operation
Drilled on maxilla antetheca, mark the position of fixation titanium nail；
Apertura piriformis edge position limiting structure, for covering apertura piriformis edge in operation, it is in place to limit the fence body
In unique and repeatable position, and the slip of the fence body is avoided, to ensure the accurate in place of the fence body；
The guiding gutter, covered the positioning hole at the location of described structure back side, in operation
Water-spraying control when jawbone forearm drills, prevents maxilla from burning；
Spina nasalis anterior position position limiting structure, it is spacing with the apertura piriformis edge for covering spina nasalis anterior edge in operation
Structure limits the fence body and is located in unique and repeatable position jointly, and avoids the slip of the fence body, with
Ensure the accurate in place of the fence body.
Wherein, the material of the surgical guide is cochrome.
Wherein, the projection has 8.
Wherein, the thickness of the fence body is 1mm.
Wherein, the guiding gutter for it is multiple opening towards the fence body edge U-type grooves, the section of the U-type groove
For diameter 0.9mm semicircle.
Invention additionally discloses a kind of method for designing above-mentioned upper jaw Le Fort I type osteotomy surgical guides, including
Following steps：
S1：The CBCT images or spiral CT images of patient is obtained, extracts its craniofacial region skeletal tissue data；According to the cranium
The virtual three-dimensional model of facial skeleton tissue data reconstruction patient's craniofacial region bone；
S2：According to the operation requirement of upper jaw Le Fort I type osteotomies, in the bilateral maxilla of the virtual three-dimensional model
Fore-arm marks the position of osteotomy line；And sclerotin thicker part is chosen in the biomethanics shore position of bilateral maxilla, respectively at
Osteotomy line upper and lower sides intend the position of fixed titanium nail using cylinder demarcation；According to predetermined clinical operation scheme, calculating
Simulation operation is carried out in machine, while adjusts maxillary teeth bone section and the cylinder to meeting the predetermined clinical operation scheme
Position, preserve adjustment after maxilla and the cylinder data；
S3：The data of the maxilla preserved and the cylinder are imported into Three-dimensional Design Software, the operation is drawn and leads
Plate, concretely comprise the following steps：
S31：The structure is drawn respectively according to maxilla antetheca, cheekbone alveolar ridge, apertura piriformis and spina nasalis anterior position, its
In：The profile of the structure is drawn at maxilla antetheca, and sets the thickness of the structure as 1mm；In apertura piriformis and
Apertura piriformis edge position limiting structure and spina nasalis anterior position position limiting structure are drawn at spina nasalis anterior respectively, wherein, the structure
Edge is to cheekbone alveolar ridge but does not enter the undercut area of wall to the marrow, in order to avoid influence in place, the guide plate of fence body described in operation
The top edge of main body avoids foramen infraorbital, to avoid damaging nervus infraorbitalis in operation；
S32：Using the multiple pilot holes of the cylinder volume drawing and multiple positioning holes, the guiding hole wall is set
Thick 1mm；Mark the position of osteotomy line to form osteotomy mark line on the structure, and set on every osteotomy mark line
Count three or four osteotomy wire tag holes；
S33：The fence body and the pilot hole are subjected to Boolean calculation with the maxilla and the cylinder, obtained
The shape of the contact surface of the fence body and maxilla is obtained, ensures the contact surface of the fence body and maxilla according to bone face
Form is brought into close contact with bone face；
S34：At the back side of the fence body, along the shaped position of walking of the positioning hole, multiple openings are designed described in
The U-type groove at fence body edge, as described guiding gutter, wherein, the section of the guiding gutter is a diameter of 0.9mm semicircle；
S4：Preserve the designed surgical guide data.
Wherein, according to the surgical guide data of preservation, the surgical guide is made with 3 D-printing.
Wherein, the material of the surgical guide is cochrome.
Wherein, the pilot hole and the positioning hole are respectively 8.
Compared with prior art, beneficial effects of the present invention are embodied in：
The present invention provides a kind of maxilla low level fracture bone-culting operation guide plate, itself bone face of patient since the surgical guide
Form is designed, and is made with 3 D-printing method, and guide plate has new self limiting positioning result, can completely and firmly
The unique positions for meeting Design on the maxilla antetheca of patient are fitted in, so as to more accurately determine the position of maxillary teeth bone section
Put, improve operation precision, improve clinical therapeutic efficacy.In addition, the guide plate compared with similar guide plate, need not incite somebody to action in Clinical practice
Guide plate itself is fixed on maxilla antetheca, while is used in combination with individuation titanium plate and can simplify surgical operation step and doctor
Labor intensity.There is pilot hole and positioning hole, it is ensured that the fixed bit for the individuation titanium plate being used cooperatively with guide plate on guide plate
Put and accurately meet Design position, and can effectively avoid producing obvious stress in individuation titanium plate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will to embodiment or
The required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the upper jaw Le Fort I type osteotomy surgical guide front views of one embodiment of the invention；
Fig. 2 is the upper jaw Le Fort I type osteotomy surgical guides of one embodiment of the invention with an angle oblique view；
Fig. 3 is the upper jaw Le Fort I type osteotomy surgical guide rear views of one embodiment of the invention；
Fig. 4 is the method flow diagram of the design upper jaw Le Fort I type osteotomy surgical guides of one embodiment of the invention.
Description of reference numerals：1- osteotomy mark lines；2- structures；3- osteotomy wire tags hole；4- pilot holes；5- apertura piriformis side
Edge position limiting structure；6- guiding gutters；7- spina nasalis anteriors position position limiting structure；8- positioning holes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not paid
Embodiment, belong to the scope of protection of the invention.
A kind of maxilla low level fracture bone-culting operation guide plate provided by the invention, to be aided in operation by individuation titanium
Plate is fixed to maxilla antetheca to correct Craniofacial anomalies, and the surgical guide includes fence body and pilot hole.
Fig. 1,2,3 are refer to, as illustrated, the fence body includes two structures 2 being separated from each other, two during use
The individual cross direction profiles of structure 2 are respectively used to the operation of left side and right maxillary bone, (distribution of two structures 2 be it is symmetrical, two
The general structure of structure 2 is consistent, it is illustrated that mark is all based on the structure on right side), two structures 2 are covered in during operation
Jawbone forearm, to ensure the accurate in place of the surgical guide；The outer surface of each structure 2 is provided with osteotomy mark line 1
With multiple pilot holes 4, osteotomy mark line 1 is used for the osteotomy line position for marking maxilla low level fracture bone-culting operation；At this
In one embodiment of invention, the pilot hole 4 of each structure 2 has 8；Along osteotomy mark line 1 knot is extended vertically through provided with multiple
The osteotomy wire tag hole 3 of structure body 2, osteotomy wire tag hole 3 are used to pass through osteotomy line mark in maxilla Le Fort I type osteotomies
Hole 3 is remembered in maxilla front wall, to mark osteotomy line position on maxilla；Corresponding each pilot hole 4 extends vertically through knot
Structure body 2 is provided with a positioning hole 8 communicated with the pilot hole 4；The effect of pilot hole 4 and positioning hole 8 is using punching in operation
It is drilled through pilot hole 4 and positioning hole 8 drills on maxilla antetheca, marks the position of fixed titanium nail.Two structures 2 lean on
Nearly nasal cavity side one end is respectively equipped with apertura piriformis edge position limiting structure 5, and at apertura piriformis edge, the lower section of position limiting structure 5 is provided with spina nasalis anterior
Position position limiting structure 7；As shown in Fig. 2 apertura piriformis edge position limiting structure 5 is bent slightly inwards, the pears shape for the patient bone face that clings to
Bore edges, in order to fixation structure 2；At apertura piriformis edge, the lower section of position limiting structure 5 is provided with spina nasalis anterior position position limiting structure 7,
As shown in Fig. 2 spina nasalis anterior position position limiting structure 7 is micro- outstanding, the spina nasalis anterior position position limiting structure 7 of two structures 2 coordinates
Together to interfix, while aid in structure 2 being fixed on patient forearm.Apertura piriformis edge position limiting structure 5 and spina nasalis anterior
Position position limiting structure 7 is cooperated, and the fence body is defined in unique and repeatable position, and avoids the guide plate master
The slip of body, to ensure the accurate in place of the fence body；Wherein unique and repeatable position refers to, the fence body
The unique position of patient facial region can be seated in.
As shown in Figures 2 and 3, the back side of structure 2 is provided with guiding gutter 6；In one embodiment of the invention, guiding gutter 6
U-type groove including multiple openings towards the fence body edge, the section of the U-type groove are diameter 0.9mm semicircle.Water guide
Groove 6 covered positioning hole 8 at the location of back side of structure 2, in operation when maxilla forearm drills water-spraying control,
Prevent maxilla from burning.
In one embodiment of the invention, the material of the surgical guide is cochrome.
In one embodiment of the invention, the thickness of the fence body is 1mm.
Invention additionally discloses a kind of method for designing above-mentioned maxilla low level fracture bone-culting operation guide plate, as shown in figure 4,
Comprise the following steps and (be illustrated below in conjunction with the specific implementation case of the present invention)：
S1：The CBCT images or spiral CT images of patient is obtained, its craniofacial region skeletal tissue data is extracted, with DICOM lattice
Formula preserves；The data of DICOM format are imported into the softwares of Mimics 10.0, according to craniofacial region skeletal tissue data reconstruction patient
The virtual three-dimensional model of craniofacial region bone；
S2：According to the requirement of maxilla low level fracture bone-culting operation, before the bilateral maxilla of the virtual three-dimensional model
The position of osteotomy line described in mark at arm；And sclerotin thicker part is chosen in the biomethanics shore position of bilateral maxilla, point
The position of fixed titanium nail is not intended using cylinder demarcation in the osteotomy line upper and lower sides；According to predetermined clinical operation side
Case, simulation operation is carried out in computer, while adjust maxillary teeth bone section and the cylinder and predetermined face to meeting this
The position of bed operation plan, the data of maxilla and the cylinder after adjustment are preserved with STL forms；
S3：The data of the maxilla preserved and the cylinder are imported into Three-dimensional Design Software FreeForm, draw institute
Surgical guide is stated, is concretely comprised the following steps：
S31：According to maxilla antetheca, cheekbone alveolar ridge, apertura piriformis and spina nasalis anterior position difference rendering architecture body 2, wherein：
The profile of rendering architecture body 2 at maxilla antetheca, and the thickness of setting structure body 2 is 1mm；Distinguish at apertura piriformis and spina nasalis anterior
Draw apertura piriformis edge position limiting structure and spina nasalis anterior position position limiting structure, wherein, the edge of structure 2 to cheekbone alveolar ridge but
The undercut area of wall is not to the marrow entered, in order to avoid influenceing the in place of fence body described in operation, the top edge of structure 2 is avoided under socket of the eye
Hole, to avoid damaging nervus infraorbitalis in operation；
S32：Using described 8 pilot holes 4 of cylinder volume drawing and 8 positioning holes 8, the wall thickness for setting pilot hole 4 is 1mm；
Mark the position of osteotomy line to form osteotomy mark line 1 on structure 2, and three or four are designed on every osteotomy mark line 1
Osteotomy wire tag hole 3；
S33：The fence body and pilot hole 4 are subjected to Boolean calculation with the maxilla and the cylinder, obtained
The shape of the contact surface of the fence body and maxilla, ensure the contact surface of the fence body and maxilla according to bone face shape
State is brought into close contact with bone face；
S34：At the back side of the fence body, along the shaped position of walking of positioning hole 3, multiple openings are designed towards the guide plate
The U-type groove of body rim, as guiding gutter 6, wherein, the section of guiding gutter 6 is a diameter of 0.9mm semicircle；
S4：The designed surgical guide data are preserved with STL forms.
The surgical guide data preserved according to above-mentioned steps S4, the surgical guide can be made with 3 D-printing.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The module in device in embodiment can describe to divide according to embodiment
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit and model of technical scheme of the embodiment of the present invention
Enclose.
Claims (9)
- A kind of 1. maxilla Le Fort I type osteotomy surgical guides, to aid in titanium plate being fixed to patient in operation Maxilla antetheca is to correct Craniofacial anomalies, it is characterised in that including fence body and pilot hole, wherein：The fence body includes two structures being separated from each other, and two structures are respectively used to left side and right during use The operation of side maxilla；The outer surface of each structure is provided with osteotomy mark line and multiple pilot holes, along described section Bone label line is provided with multiple osteotomy wire tag holes for extending vertically through the structure, and corresponding each pilot hole extends vertically through institute State structure and be provided with a positioning hole communicated with the pilot hole；Close nasal cavity side one end of two structures is respectively equipped with Apertura piriformis edge position limiting structure, at the apertura piriformis edge, the lower section of position limiting structure is provided with spina nasalis anterior position position limiting structure；It is described The structure back side is provided with guiding gutter；WhereinThe fence body, maxilla antetheca is covered in during for performing the operation, to ensure the accurate in place of the surgical guide；The osteotomy mark line, for marking the osteotomy line position of maxilla Le Fort I type osteotomies；The osteotomy wire tag hole, for existing in maxilla Le Fort I type osteotomies through the osteotomy wire tag hole Jawbone front wall, to mark osteotomy line position on maxilla；The pilot hole and the positioning hole, for supplying grooved bit through the pilot hole and the positioning hole in the upper jaw in operation Drilled on bone antetheca, mark the position of fixed titanium nail；Apertura piriformis edge position limiting structure, for covering apertura piriformis edge in operation, limit the fence body and be located in only Repeatable position in the lump, and the slip of the fence body is avoided, to ensure the accurate in place of the fence body；The guiding gutter, covered the positioning hole at the location of described structure back side, in operation in maxilla Water-spraying control during front wall, prevents maxilla from burning；Spina nasalis anterior position position limiting structure, for covering spina nasalis anterior edge in operation, with apertura piriformis edge position limiting structure The fence body is limited jointly and is located in unique and repeatable position, and avoids the slip of the fence body, to ensure The fence body it is accurate in place.
- 2. maxilla Le Fort I type osteotomy surgical guides according to claim 1, it is characterised in that the hand The material of art guide plate is cochrome.
- 3. maxilla Le Fort I type osteotomy surgical guides according to claim 1, it is characterised in that also including 8 Individual projection, pilot hole are located in projection.
- 4. maxilla Le Fort I type osteotomy surgical guides according to claim 1, it is characterised in that described to lead The thickness of plate main body is 1mm.
- 5. maxilla Le Fort I type osteotomy surgical guides according to claim 1, it is characterised in that described to lead U-type groove of the tank for multiple openings towards the fence body edge, the section of the U-type groove is diameter 0.9mm semicircle.
- 6. a kind of method for designing any described maxilla Le Fort I type osteotomy surgical guides of claim 1-5, its It is characterised by, comprises the following steps：S1：The CBCT images or spiral CT images of patient is obtained, extracts its craniofacial region skeletal tissue data；According to the craniofacial region The virtual three-dimensional model of skeletal tissue's data reconstruction patient's craniofacial region bone；S2：According to the operation requirement of upper jaw Le Fort I type osteotomies, in the bilateral maxilla antetheca of the virtual three-dimensional model The position of place's mark osteotomy line；And sclerotin thicker part is chosen in the biomethanics shore position of bilateral maxilla, respectively at osteotomy Line upper and lower sides intend the position of fixed titanium nail using cylinder demarcation；According to predetermined clinical operation scheme, in computer Simulation operation is carried out, while adjusts maxillary teeth bone section and the cylinder to the position for meeting the predetermined clinical operation scheme Put, preserve the data of maxilla and the cylinder after adjustment；S3：The data of the maxilla preserved and the cylinder are imported into Three-dimensional Design Software, draw the surgical guide, are had Body step is：S31：The structure is drawn respectively according to maxilla antetheca, cheekbone alveolar ridge, apertura piriformis and spina nasalis anterior position, wherein： The profile of the structure is drawn at maxilla antetheca, and sets the thickness of the structure as 1mm；In apertura piriformis and spina nasalis anterior Apertura piriformis edge position limiting structure and spina nasalis anterior position position limiting structure are drawn respectively by place, wherein, the edge of the structure is extremely Cheekbone alveolar ridge but the undercut area for not entering wall to the marrow, in order to avoid the in place of fence body described in operation is influenceed, the fence body Top edge avoids foramen infraorbital, to avoid damaging nervus infraorbitalis in operation；S32：Using the multiple pilot holes of the cylinder volume drawing and multiple positioning holes, the pilot hole wall thickness is set 1mm；Mark the position of osteotomy line to form osteotomy mark line on the structure, and designed on every osteotomy mark line Three or four osteotomy wire tag holes；S33：The fence body and the pilot hole are subjected to Boolean calculation with the maxilla and the cylinder, obtain institute The shape of the contact surface of fence body and maxilla is stated, ensures the contact surface of the fence body and maxilla according to bone face form It is brought into close contact with bone face；S34：At the back side of the fence body, along the shaped position of walking of the positioning hole, multiple openings are designed towards the guide plate The U-type groove of body rim, as described guiding gutter, wherein, the section of the guiding gutter is a diameter of 0.9mm semicircle；S4：Preserve the designed surgical guide data.
- 7. the method for design maxilla Le Fort I type osteotomy surgical guides according to claim 6, its feature exist According to the surgical guide data of preservation, with the 3 D-printing making surgical guide.
- 8. the method for design maxilla Le Fort I type osteotomy surgical guides according to claim 6, its feature exist In the material of the surgical guide is cochrome.
- 9. the method for design maxilla Le Fort I type osteotomy surgical guides according to claim 6, its feature exist In the pilot hole and the positioning hole are respectively 8.
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| CN105796188B (en) * | 2016-03-03 | 2018-11-30 | 湖北嘉一三维高科股份有限公司 | Osteotomy guide plate |
| CN105852931B (en) * | 2016-05-03 | 2018-09-07 | 中山大学孙逸仙纪念医院 | The guiding positioning component for cutting off and rebuilding for Jaw neoplasm of increasing material manufacturing |
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| CN107736914B (en) * | 2017-10-30 | 2020-02-28 | 吉林大学 | Accurate positioner for upper jaw movement |
| CN109864821A (en) * | 2019-04-03 | 2019-06-11 | 深圳市艾科赛龙科技股份有限公司 | A kind of production method of surgical navigation plate |
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