CN114159179B

CN114159179B - Healing abutment for DIS and multifunctional integrated upper part mold taking and repairing method thereof

Info

Publication number: CN114159179B
Application number: CN202111479927.4A
Authority: CN
Inventors: 郝广平; 刘松; 张虎虎
Original assignee: Beijing Datsing Technology Co ltd
Current assignee: Beijing Datsing Technology Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2023-10-20
Anticipated expiration: 2041-12-06
Also published as: CN114159179A

Abstract

The application discloses a healing abutment for DIS and a multifunctional integrated upper die taking and repairing method thereof, and relates to the field of oral implantation tools. Wherein, DIS is with healing base platform includes spliced pole and scanning cover, the scanning cover is established in the outside of spliced pole, the inside wall of scanning cover is laminated mutually with the lateral wall of spliced pole, the both ends of spliced pole all extend to the outside of scanning cover, the one end of spliced pole is used for with the planting body bolt, the other end of spliced pole is equipped with the support ring piece, the one end that the planting body was kept away from to the spliced pole extends to the gum cuff outside, and the one end that the planting body was kept away from to the spliced pole is equipped with prefabricated cap, prefabricated cap supports in the one side that the support ring piece deviates from the planting body, and prefabricated cap cutting ferrule is on the spliced pole. Through setting up the support ring piece, keep apart prefabricated cap and gum cuff, when being favorable to reducing carrying out the interlock test, prefabricated cap takes place to warp and lead to the fact the extrusion to the inner periphery of gum cuff, brings painful sense and uncomfortable possibility for the patient.

Description

Healing abutment for DIS and multifunctional integrated upper part mold taking and repairing method thereof

Technical Field

The application relates to the field of oral cavity planting tools, in particular to a healing abutment for DIS and a multifunctional integrated upper die taking and repairing method thereof.

Background

Along with the change of eating habits of people, more and more people have oral problems, teeth face the problems of tooth decay or necrosis and shedding, and the like, and in the oral treatment process, the clinical comparison is more favorable for the treatment by planting false teeth.

Referring to fig. 1, currently, DIS (digital impression system) is the most commonly used method of printing a film when implanting a denture. The implant is usually connected to the dental framework firstly, then the central bolt 8 is bolted with the implant, the outer side of the central bolt 8 is sleeved with the transfer rod 7, and the digital die taking can be realized without disassembling the transfer rod, so that the traditional digital die taking mode using the scanning rod is replaced. The outer side of the top of the transfer rod 7 is provided with a hexagonal boss, and the outer side of the hexagonal boss is fastened with an impression cap 9 for shaping gum cuffs, and the impression cap 9 is usually made of a flexible material bearing an occlusion recording material. When taking out the die, the die cap 9 is taken down, the central bolt 8 and the scanning rod 7 are not required to be disassembled and assembled, and the die is taken out and then the die enters the later stage abutment for selection and the dental crown manufacturing.

For the related art in the above, because the die cap is fastened on the hexagonal boss, and the bottom of the die cap is abutted against the step surface on the transfer rod, the outer side of the die cap is attached to the inner periphery of the gum cuff, when the teeth adjacent to the upper and lower positions are engaged with the die cap, the die cap is extruded to deform, so that the die cap is extruded to the inner periphery of the gum cuff, and pain and discomfort can be brought to a patient.

Disclosure of Invention

In order to solve the problem that in the related art, the inner periphery of the gum cuff is extruded due to the fact that the film printing cap is extruded and deformed in the process of restoring the dental implant, and pain is brought to a patient, the application provides a healing abutment for DIS and a multifunctional integrated upper part mold taking and repairing method thereof.

The healing abutment for DIS provided by the application is obtained by adopting the following technical scheme:

the utility model provides a DIS is with healing base platform, includes spliced pole and scanning cover, the scanning cover is established in the outside of spliced pole, the inside wall of scanning cover laminates mutually with the lateral wall of spliced pole, the both ends of spliced pole all extend to the outside of scanning cover, the one end of spliced pole is used for bolting with the implant, the other end of spliced pole is equipped with the support ring piece, the one end that the implant was kept away from to the spliced pole extends to the gum cuff outside, just the one end that the implant was kept away from to the spliced pole is equipped with prefabricated cap, prefabricated cap supports in one side that the support ring piece deviates from the implant, just prefabricated cap cutting ferrule is on the spliced pole.

Through the technical scheme, when the prefabricated cap clamping sleeve is arranged on the connecting column, the bottom end of the prefabricated cap is supported on the supporting ring sheet, when the occlusion test is carried out, the prefabricated cap is occluded with teeth, the prefabricated cap is extruded to deform at the moment, the supporting ring sheet isolates the prefabricated cap from the gum cuffs, the prefabricated cap deformation is reduced, the extrusion is caused on the inner periphery of the gum cuffs, and the pain feeling possibility is brought to a patient.

Preferably: the middle of the supporting ring piece is provided with a through hole, one side of the supporting ring piece, deviating from the prefabricated cap, is connected with a sleeve, the sleeve is communicated with the through hole, the sleeve is sleeved on the outer side of the connecting column and is in threaded connection with the connecting column, and the cross section area of the supporting ring piece is larger than that of the scanning sleeve.

Through above-mentioned technical scheme, the support ring piece passes through sleeve threaded connection in the outside of spliced pole to the operator of being convenient for installs or dismantles the support ring piece. The cross section area of the supporting ring sheet is larger than that of the scanning sleeve, which is favorable for the supporting ring sheet to shield the gingival cuff, reduces the possibility that the gingival cuff is directly exposed and is easy to be lost, and is favorable for protecting the gingival cuff.

Preferably: the outside parcel of telescopic has flexible parcel layer, flexible parcel layer is used for laminating with the inner wall of gum cuff.

Through above-mentioned technical scheme, flexible parcel layer and the contact of the inner periphery of gum cuff to gum cuff shaping, and flexible parcel layer texture is softer than the sleeve, and flexible parcel layer replaces sleeve and gum cuff direct contact, is favorable to reducing patient's uncomfortable sense.

Preferably: the cross section of the connecting column towards one end of the prefabricated cap is set to be polygonal, a clamping groove is formed in one side of the prefabricated cap towards the connecting column, and the connecting column is correspondingly clamped in the clamping groove.

Through the technical scheme, the polygonal connecting column is correspondingly clamped in the clamping groove of the prefabricated cap, so that the stability of connection between the prefabricated cap and the connecting column is improved, and the possibility of relative position deviation between the prefabricated cap and the connecting column is reduced.

Preferably: the side of the support ring sheet facing the prefabricated cap is provided with a spacer, the spacer is jointed with the support ring sheet, the periphery of the spacer extends out of the support ring sheet, the prefabricated cap is jointed with the side of the spacer away from the support ring sheet, the utility model discloses a prefabricated cap, including the spacer, the spacer is equipped with the lug towards one side of prefabricated cap, the recess is seted up towards one side of spacer to prefabricated cap, the lug corresponds the grafting in the recess.

Through the technical scheme, when the prefabricated cap is required to be demolded from the connecting column, an operator can lift the isolating strip from the supporting ring piece, so that the prefabricated cap is separated from the supporting ring piece, and the operator can quickly take down the prefabricated cap from the connecting column. If no isolating strip exists, the operator needs to pull out the prefabricated cap directly from the top of the connecting column, the operation is more laborious, the isolating strip is arranged, the operator is convenient to take the isolating strip as a breakthrough point, and the isolating strip is quickly torn off from the supporting ring sheet, so that the prefabricated cap is quickly taken away from the connecting column, and the operation difficulty is facilitated.

Preferably: the connecting column is hollow, an inner cavity is formed, an opening end is formed in the top end of the connecting column, a communication channel is formed in the side walls of the connecting column and the scanning sleeve, and the communication channel is communicated with the inner cavity of the connecting column.

Through above-mentioned technical scheme, when the spliced pole bolt is on the planting body, the operator can inhale saliva in the gum cuff through the inner chamber and the intercommunication passageway of spliced pole through inhaling the saliva pipe to keep dry in the gum cuff, reduce because of the saliva between gum cuff inner periphery and spliced pole and the scanning cover is difficult to inhale and causes the gum cuff to be in the moist state for a long time, easily infects, and causes the possibility of influence to the healing of gum cuff.

Preferably: the communication channels are arranged in a plurality, and the communication channels are uniformly distributed along the axial direction of the scanning sleeve.

Through above-mentioned technical scheme, the setting of a plurality of intercommunication passageway is convenient for inhale the saliva in the gum cuff from the diversified clean, is favorable to keeping dry in the gum cuff to gum cuff is restoreed fast and is healed.

Preferably: the outside of spliced pole is equipped with the stopper along the axial, the inboard of scanning cover is equipped with the spacing groove, the stopper corresponds the joint in the spacing inslot.

Through above-mentioned technical scheme, stopper and spacing groove correspond the joint to be convenient for scan cover and spliced pole installation back, scan cover and spliced pole on the connecting channel can accurate butt joint, be favorable to reducing in the installation, the position between scan cover and the spliced pole takes place the skew and leads to scan cover and spliced pole on the connecting channel be difficult to accurate butt joint's possibility, then can lead to the saliva operation of inhaling to gum cuff be difficult to go on.

Preferably: the cotton sliver is filled in the inner cavity of the connecting column, an end cover is connected with the opening end of the connecting column in a threaded mode, and a cross groove is formed in one side, away from the cotton sliver, of the end cover.

Through the technical scheme, saliva accumulated in the inner cavity of the connecting column can be absorbed by the cotton sliver, so that the drying of the gum cuffs is kept, and the gum repairing and healing are facilitated. When the cotton sliver fully absorbs saliva in the inner cavity of the connecting column, an operator takes out the cotton sliver from the inner cavity in time, screws the end cover at the opening end of the inner cavity of the connecting column, closes the inner cavity, and then buckles the prefabricated cap on the connecting column. The sliver which has absorbed saliva is taken out in time, which is favorable for reducing the possibility of cross infection caused by fusion of new saliva and old saliva because the residence time of the sliver in the inner cavity is overlong.

The application also provides a multifunctional integrated upper part mould taking and repairing method, which is obtained by adopting the following technical scheme:

the multifunctional integrated upper part mold taking and repairing method comprises the following steps:

sleeving the scanning sleeve with the connecting column;

bolting the connecting column with the implant;

unscrewing the end cover on the connecting column from the connecting column, placing the cotton sliver in the inner cavity of the connecting column, and then connecting the end cover on the connecting column in a threaded manner again;

the sleeve is sleeved on the outer side of the connecting column and is in threaded connection with the connecting column so as to ensure that gum cuffs are formed, and the prefabricated cap is buckled on the top of the connecting column, so that the bottom end of the prefabricated cap is attached to the supporting sheet;

and after the occlusion test is finished, the prefabricated cap is taken down from the connecting column, and after the die is taken out, the process of selecting a later stage abutment and manufacturing a dental crown is carried out.

Through the technical scheme, before carrying out the interlock test and taking out the mould, the prefabricated cap is separated from the gum cuffs through the support ring sheet, so that the possibility that the prefabricated cap deforms to cause extrusion to the gum and pain or discomfort is brought to a patient is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the upper part is taken out of the mould and repaired, and the preformed cap is isolated by the supporting ring sheet during the occlusion test, the possibility of pain caused to a patient due to extrusion of the gingival cuff when the preformed cap is extruded and deformed is reduced;

2. the method is suitable for the traditional mode of taking the mould or the digital mode of taking the mould, and has a plurality of functions such as healing the base station function, traditional mode taking, digital scanning, occlusion recording and the like to a certain extent.

Drawings

Fig. 1 is a schematic view of a structure of a center bolt, a transfer rod, and an impression cap for embodying the related art.

Fig. 2 is a schematic diagram of a structure for embodying the connection post and the scan bar in the embodiment of the present application.

FIG. 3 is a schematic view of a structure for embodying the connecting post, sleeve, receiving ring piece and prefabricated cap in an embodiment of the present application.

Fig. 4 is a schematic view showing the overall structure of the healing abutment for DIS and the internal structure of the cavity of the connection post according to the embodiment of the present application.

Reference numerals illustrate: 1. a connecting column; 11. a threaded portion; 12. a cavity; 13. a cotton sliver; 14. an end cap; 141. a cross groove; 15. a limiting block; 2. a scanning sleeve; 21. a communication passage; 22. a limit groove; 3. a support ring sheet; 4. a sleeve; 41. a flexible wrapping layer; 5. pre-manufacturing a cap; 51. a clamping groove; 52. a groove; 6. a spacer; 61. a bump; 7. a transfer lever; 8. a central bolt; 9. impression caps.

Detailed Description

The application is described in further detail below with reference to fig. 2-4.

The embodiment of the application discloses a healing abutment for DIS and a multifunctional integrated upper die taking and repairing method thereof.

Referring to fig. 2, a healing abutment for DIS includes a connection post 1 and a scanning sleeve 2, wherein a threaded portion 11 is provided at the outer side of the bottom end of the connection post 1, the threaded portion 11 of the connection post 1 is used for bolting with an implant, and one end of the connection post 1 far from the threaded portion 11 extends to the outer side of a gum cuff. The outside of spliced pole 1 is equipped with stopper 15 along the axial, stopper 15 and spliced pole 1 integrated into one piece, the inboard of scanning cover 2 is equipped with spacing groove 22, spacing groove 22 is offered along the axial of scanning cover 2, the outside at spliced pole 1 is established to scanning cover 2 cover, stopper 15 corresponds the joint with spacing groove 22, the external diameter of the one end that spliced pole 1 is close to screw portion 11 is great, the internal diameter of scanning cover 2 is less than the biggest external diameter of spliced pole 1, scanning cover 2 cup joints in the outside of spliced pole 1, and the external diameter of scanning cover 2 is progressively decreased towards the direction that is close to screw portion 11, the both ends of spliced pole 1 all extend to the outside of scanning cover 2.

Referring to fig. 3 and 4, the outside cover of the one end that screw thread portion 11 was kept away from to spliced pole 1 is equipped with sleeve 4, sleeve 4 and spliced pole 1 threaded connection, and sleeve 4 is laminated mutually with scanning cover 2 towards the tip of the one end of scanning cover 2, and sleeve 4 is kept away from the one end of scanning cover 2 and is equipped with support ring piece 3, and the through-hole has been seted up in the centre of support ring piece 3, and sleeve 4 and the pore wall integrated into one piece of the through-hole on support ring piece 3, the cross-sectional area of support ring piece 3 is greater than the cross-sectional area of scanning cover 2. The outer side of the sleeve 4 is adhered and wrapped with a flexible wrapping layer 41, and the flexible wrapping layer 41 is made of rubber materials. The flexible wrapping layer 41 is softer than the sleeve 4 in texture, and the flexible wrapping layer 41 replaces the sleeve 4 to be attached to the inner peripheral wall of the gum cuff, so that the gum cuff is formed, and discomfort of a patient is reduced. The cross section area of the supporting ring sheet 3 is larger than that of the scanning sleeve 2, which is favorable for the supporting ring sheet 3 to cover the gum cuffs, thereby being favorable for reducing the possibility of easy infection caused by exposed gum cuffs.

Referring to fig. 3 and 4, the connecting column 1 is hollow to form a cavity 12, an open end is provided at one end of the connecting column 1 far from the threaded portion 11, a communication channel 21 is provided on the side walls of the connecting column 1 and the scanning sleeve 2 along the radial direction of the connecting column 1, and the communication channel 21 is communicated with the inner cavity of the connecting column 1. The communication channels 21 are provided with a plurality of communication channels 21, and the communication channels 21 are uniformly distributed along the axial direction of the scanning sleeve 2. The inner cavity of the connecting column 1 is filled with a cotton sliver 13, the open end of the connecting column 1 is in threaded connection with an end cover 14, and a cross groove 141 is formed in one side, away from the cotton sliver 13, of the end cover 14, so that an operator can be used for threaded connection of the end cover 14 and the open end of the connecting column 1 through a screwdriver.

Saliva accumulated between the inner periphery of the gum cuff and the scanning sleeve 2 can flow into the cavity 12 through the communication channel 21, and before the cotton sliver 13 is put into the cavity 12 of the connecting column 1, an operator sucks saliva in the cavity 12 through the saliva suction tube, so that the possibility that the inner periphery of the gum cuff is always moist and easy to infect is reduced. Then, the operator puts the cotton sliver 13 into the cavity 12 again so that the cotton sliver 13 absorbs saliva accumulated in the cavity 12, which is beneficial to keeping the inner periphery of the gum cuff dry, thereby being beneficial to quick repair and healing of the gum cuff. After the tampon 13 absorbs saliva, the operator takes the tampon 13 out of the cavity 12 in time to avoid cross infection.

Referring to fig. 3 and 4, the cross section of the end of the connection post 1 far from the threaded portion 11 is polygonal, and the prefabricated cap 5 is buckled on the connection post 1, the prefabricated cap 5 bears the occlusion recording material, the side of the prefabricated cap 5 facing the connection post 1 is provided with a clamping groove 51, and the cross section of the clamping groove 51 is also polygonal. In this embodiment, the cross section of the end of the connecting post 1 far away from the threaded portion 11 and the cross section of the clamping groove 51 are both regular pentagons, and the connecting post 1 and the clamping groove 51 are correspondingly clamped and fixed, so that the possibility of relative rotation between the prefabricated cap 5 and the connecting post 1 is reduced, and the relative stability of the position between the connecting post 1 and the prefabricated cap 5 is improved.

One end of the prefabricated cap 5 facing the supporting ring piece 3 is abutted against the supporting ring piece 3, and the prefabricated cap 5 is supported on the supporting ring piece 3. The support ring sheet 3 enables the prefabricated cap 5 to be isolated from the gum cuffs, which is beneficial to reducing the possibility that the prefabricated cap 5 deforms to squeeze the gum cuffs when the occlusion test is carried out, so that pain and discomfort of patients are caused.

Referring to fig. 4, a spacer 6 is provided on a side of the prefabricated cap 5 facing the supporting ring sheet 3, a groove 52 is provided on a side of the prefabricated cap 5 facing the spacer 6, a protrusion 61 is provided on a side of the spacer 6 facing the prefabricated cap 5, and the protrusion 61 is correspondingly inserted into the groove 52. And, prefabricated cap 5 suppresses on parting bead 6 for parting bead 6 hugs closely support ring piece 3, and parting bead 6 sets up along the radial of support ring piece 3, and the one end that parting bead 6 is close to support ring piece 3 edge extends to the outside of support ring piece 3. When the prefabricated cap 5 is required to be taken down from the connecting column 1, an operator takes off the isolating strip 6 from the supporting ring sheet 3, and the isolating strip 6 drives the prefabricated cap 5 to be taken off from the supporting ring sheet 3, so that the efficiency of demoulding the prefabricated cap 5 by the operator is improved.

A multifunctional integrated upper part mould taking and repairing method comprises the following steps:

the limiting block 15 and the limiting groove 22 are correspondingly clamped and matched, so that the scanning sleeve 2 is sleeved and fixed with the connecting column 1.

The connecting column 1 is bolted and fixed with an implant which has been planted on the dental bone.

The cap 14 on the connection post 1 is unscrewed from the connection post 1, saliva accumulated in the cavity 12 of the connection post 1 is sucked through the saliva suction tube, the cotton sliver 13 is placed in the inner cavity of the connection post 1, and the cap 14 is re-screwed on the connection post 1.

The sleeve 4 is sleeved on the outer side of the connecting column 1 and is in threaded connection with the connecting column 1, at the moment, the flexible wrapping layer 41 on the outer side of the sleeve 4 is attached to the inner wall of the gum cuff to ensure the gum cuff to be formed, at the moment, the gum cuff is covered by the supporting ring piece 3, and one end, far away from the threaded part 11, of the connecting column 1 extends to the outer part of the gum cuff; then, the protruding blocks 61 on the isolating strips 6 are correspondingly clamped in the grooves 52 of the prefabricated caps 5, and then the clamping grooves 51 on the prefabricated caps 5 are correspondingly clamped with the connecting columns 1, so that the prefabricated caps 5 are buckled on the connecting columns 1, and the isolating strips 6 are pressed between the support ring sheets 3 and the prefabricated caps 5.

Then, occlusion test is carried out, deformation occurs when the prefabricated cap 5 is occluded with teeth adjacent to the upper and lower positions, at the moment, the prefabricated cap 5 is isolated from the gingival cuffs by the supporting ring sheet 3, the possibility that the prefabricated cap 5 extrudes the gingival cuffs due to deformation is reduced, and the pain and discomfort of a patient are reduced.

After the occlusion test is completed, the spacer 6 is removed from the supporting ring sheet 3 to drive the prefabricated cap 5 to be quickly separated from the connecting column 1, and the prefabricated cap enters the later stage abutment for selection and crown manufacturing after the die extraction is completed.

The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.

Claims

1. A healing abutment for DIS, characterized in that: the device comprises a connecting column (1) and a scanning sleeve (2), wherein the scanning sleeve (2) is arranged on the outer side of the connecting column (1), the inner side wall of the scanning sleeve (2) is attached to the outer side wall of the connecting column (1), two ends of the connecting column (1) are extended to the outer side of the scanning sleeve (2), one end of the connecting column (1) is used for being bolted with an implant, a supporting ring piece (3) is arranged at the other end of the connecting column (1), one end of the connecting column (1) far away from the implant extends to the outer side of a gum cuff, a prefabricated cap (5) is arranged at one end of the connecting column (1) far away from the implant, and the prefabricated cap (5) is supported on one side of the supporting ring piece (3) far away from the implant and is clamped on the connecting column (1);

the middle of the supporting ring piece (3) is provided with a through hole, one side of the supporting ring piece (3) deviating from the prefabricated cap (5) is connected with a sleeve (4), the sleeve (4) is communicated with the through hole, the sleeve (4) is sleeved on the outer side of the connecting column (1) and is in threaded connection with the connecting column (1), and the cross section area of the supporting ring piece (3) is larger than the cross section area of the scanning sleeve (2);

the outer side of the sleeve (4) is wrapped with a flexible wrapping layer (41), and the flexible wrapping layer (41) is used for being attached to the inner wall of the gum cuff;

the utility model discloses a prefabricated cap, including prefabricated cap (5) and spacer ring piece, support ring piece (3) are equipped with spacer strip (6) towards one side of prefabricated cap (5), spacer strip (6) laminate mutually with support ring piece (3), the periphery of spacer strip (6) is extended and is stretched out support ring piece (3), prefabricated cap (5) laminate mutually with one side that spacer strip (6) deviate from support ring piece (3), one side of spacer strip (6) towards prefabricated cap (5) is equipped with lug (61), one side of prefabricated cap (5) towards spacer strip (6) is seted up flutedly (52), lug (61) correspond peg graft in recess (52).

2. The healing abutment for DIS according to claim 1, wherein: the cross section of the connecting column (1) facing one end of the prefabricated cap (5) is set to be polygonal, a clamping groove (51) is formed in one side of the prefabricated cap (5) facing the connecting column (1), and the connecting column (1) is correspondingly clamped in the clamping groove (51).

3. The healing abutment for DIS according to claim 1, wherein: the connecting column (1) is hollow, an inner cavity is formed, an opening end is formed in the top end of the connecting column (1), a communication channel (21) is formed in the side wall of the connecting column (1) and the side wall of the scanning sleeve (2), and the communication channel (21) is communicated with the inner cavity of the connecting column (1).

4. The healing abutment for DIS according to claim 3, wherein: a plurality of communication channels (21) are formed, and the communication channels (21) are uniformly distributed along the axial direction of the scanning sleeve (2).

5. The healing abutment for DIS according to claim 4, wherein: the outside of spliced pole (1) is equipped with stopper (15) along the axial, the inboard of scanning cover (2) is equipped with spacing groove (22), stopper (15) correspond joint in spacing groove (22).

6. The healing abutment for DIS according to claim 3 or 5, wherein: the cotton sliver (13) is filled in the inner cavity of the connecting column (1), an end cover (14) is connected with the opening end of the connecting column (1) in a threaded mode, and a cross groove (141) is formed in one side, deviating from the cotton sliver, of the end cover (14).

7. A multifunctional integrated upper mold-taking and repair method using the DIS healing abutment of claim 1 or 6, comprising the steps of:

sleeving the scanning sleeve (2) with the connecting column (1);

bolting the connecting column (1) with the implant;

unscrewing an end cover (14) on the connecting column (1) from the connecting column (1), placing a cotton sliver in the inner cavity of the connecting column (1), and then re-screwing the end cover (14) on the connecting column (1);

the sleeve (4) is sleeved on the outer side of the connecting column (1) and is in threaded connection with the connecting column (1) so as to ensure that gum cuffs are formed, and the prefabricated cap (5) is buckled on the top of the connecting column (1) so that the bottom end of the prefabricated cap (5) is attached to the supporting sheet;

after the occlusion test is completed, the prefabricated cap (5) is taken off from the connecting column (1), and after the die is taken out, the dental crown is manufactured and then enters the later stage abutment for selection.