CN113197691A - Wear-resistant combined type all-ceramic false tooth and processing technology - Google Patents
Wear-resistant combined type all-ceramic false tooth and processing technology Download PDFInfo
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- CN113197691A CN113197691A CN202110531524.3A CN202110531524A CN113197691A CN 113197691 A CN113197691 A CN 113197691A CN 202110531524 A CN202110531524 A CN 202110531524A CN 113197691 A CN113197691 A CN 113197691A
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- A61C13/00—Dental prostheses; Making same
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Abstract
The application relates to the technical field of false teeth and processing thereof, in particular to a wear-resistant combined type full-ceramic false tooth and a processing technology, which comprises the following steps: s1, preparing to take a module: carrying out comprehensive examination on a human body to obtain an impression; s2, model scanning; s3, designing a dental crown: using professional design software to complete the morphological design of the crown and the middle tooth base; s4, CAM processing; s5, cleaning the module; s6, dyeing by a module; s7, drying and sintering; s8, repairing and trimming; s9, sand blasting and glazing; s10, processing of the gum base: calculating and composing tool paths by using professional software, rapidly processing a high-precision gum base by using a professional milling machine, and embedding medical screws in the gum base; s11, assembling the complete porcelain denture: at first carry out threaded connection with medical screw in the tooth, later with the tooth crown and the tooth assembly of seat as an organic whole in, the change process of the porcelain artificial tooth can be simplified to this application, reduces the repair cost of changing the porcelain artificial tooth.
Description
Technical Field
The application relates to the technical field of false teeth and processing thereof, in particular to a wear-resistant combined type all-ceramic false tooth and a processing technology thereof.
Background
The denture is what is commonly called a "denture". Just like "leg prosthesis" and "prosthetic limb" are referred to as "prosthetic limb", a "denture" means that the human being is "obligated" to the utmost. The false tooth is a general term for medical prosthesis made after partial or whole teeth of upper and lower jaws are lost. The artificial tooth is divided into removable type and fixed type. Fixed dentures (commonly known as "fixed dentures") are not worn by the patient himself, while removable dentures (commonly known as "removable dentures") are worn by the patient easily.
The full-ceramic false tooth is a new full-crown prosthesis in recent years, is made of a castable novel ceramic material, is superior to a metal porcelain tooth in appearance and biological performance, and therefore is widely used and is deeply loved by people.
However, the existing combined type full-ceramic false tooth has some defects, such as: most of the combined type full-ceramic false teeth are low in material strength, easy to generate ceramic crack during occlusion and short in service life; 2. most of the combined type full ceramic false teeth are integrally cast by a plurality of single pieces, and although the full ceramic false teeth are connected together, when one of the full ceramic false teeth is damaged and cracks are generated, the cracks easily extend to the adjacent full ceramic false tooth along the full ceramic false tooth, and the use defect exists.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: after the complete porcelain false tooth is damaged, the complete porcelain false tooth needs to be reworked and replaced, the replacement process is complicated, and the cost for replacing the whole complete porcelain false tooth is high.
Disclosure of Invention
In order to simplify the replacement process of the all-ceramic false tooth and reduce the repair cost for replacing the all-ceramic false tooth, the application provides the wear-resistant combined all-ceramic false tooth and the processing technology.
The application provides a wear-resisting combination formula porcelain artificial tooth and processing technology adopts following technical scheme: the utility model provides a wear-resisting combination formula complete porcelain artificial tooth, includes in the tooth crown, tooth seat and gum seat, the gum seat for the casing and be used for with the cooperation of gum joint in the human oral cavity, the gum seat back of the body has pre-buried medical screw from the top surface of gum, the one end set up screw hole of seat in the tooth, medical screw twist threaded hole in with tooth seat threaded connection, the one end that the gum seat was kept away from to the seat in the tooth sets firmly seat in the tooth and tooth crown fixed connection's coupling mechanism.
Through adopting above-mentioned technical scheme, the crest crown is in case after carrying out fixed connection through coupling mechanism with the tooth in the middle of the seat, and coupling mechanism carries out the dead lock with the crest crown and tooth in the seat and fixes, just can not dismantle crest crown and tooth in the seat again. After the patient used the porcelain artificial tooth for a period of time, if some crest crown took place to crack, then took out whole combination formula porcelain artificial tooth from the patient oral cavity, broke up the crest crown, fixed with the lock of new crest crown and tooth midseat once more through coupling mechanism, installed whole combination formula porcelain artificial tooth into patient's oral cavity again afterwards, made the patient can continue to use the porcelain artificial tooth to chew food. Above-mentioned whole process of changing the dental crown can simplify the change process of complete porcelain artificial tooth, reduces the repair cost of changing complete porcelain artificial tooth.
Optionally, a sunken groove is formed in the position of the pre-buried medical screw of the gum base, the medical screw is located at the bottom of the sunken groove, and one end of the middle tooth base in threaded connection with the medical screw is in splicing fit with the sunken groove.
Through adopting above-mentioned technical scheme, the gum seat is through seat in the tooth and the grafting cooperation in heavy groove, and it is spacing to cramp the one end of seat in the tooth, improves the joint strength and the connection compactness of seat in the tooth and gum seat itself.
Optionally, the diameter of the medical screw is gradually reduced in a direction close to the tooth middle seat to form a circular truncated cone shape.
Through adopting above-mentioned technical scheme, when carrying out threaded connection with seat in the tooth and medical screw, need not to make medical screw just to the screw hole of seat in the tooth, only need aim at the screw hole roughly with medical screw, get into the in-process in the threaded hole gradually at medical screw, medical screw's external screw thread carries out threaded connection with the internal thread of screw hole gradually for seat in the tooth and medical screw's connection rate, make the connection process simple and easy more convenient.
Optionally, coupling mechanism includes connecting seat and at least two sets of coupling assembling, coupling assembling includes hasp and locking spring, the one end rigid coupling of gum seat is kept away from to the seat in connecting seat and the tooth, the spout that at least twice deviated from each other is seted up to the circumference side of connecting seat, the blind hole has been seted up towards the one end of seat in the tooth to the crest crown, the cooperation of pegging graft of connecting seat and blind hole, at least twice mutual just right locked groove has been seted up to the inner wall of blind hole, hasp and spout sliding fit, the one end and the locked groove grafting cooperation of connecting seat are kept away from to the hasp, the locking spring is located the spout and is used for making the hasp automatic insertion locked inslot.
Through adopting above-mentioned technical scheme, when assembling tooth crown and tooth seat, at first make two hasp temporarily slide in the spout and insert the blind hole for the connecting seat and dodge the position, the spring compression shortens, when the connecting seat inserts in the blind hole completely and the set bar just when the locked groove, the spring makes the automatic locked inslot that inserts of set bar, realizes that tooth seat and tooth crown's quick lock is dead to be connected, whole process is swift and connect firm, precision is high.
Optionally, the latch is inclined away from the abutment in a direction away from the attachment socket towards the side of the crown.
Through adopting above-mentioned technical scheme, when assembling dental crown and tooth seat, at the in-process that dental crown is close to tooth seat, the inclined plane of opening edge butt hasp of blind hole makes in the set bar can the automatic spout that slides in for the speed of assembling of dental crown and tooth seat further.
Optionally, a layer of zirconia enamel is fixedly coated on the surface of the crown.
By adopting the technical scheme, the zirconium oxide has stable chemical properties of being insoluble in water, hydrochloric acid and dilute sulfuric acid, the zirconium oxide enamel has high hardness, a patient can chew hard food, the zirconium oxide enamel can avoid the crown of the tooth from directly contacting the food, the crown of the tooth can be protected, and the service life of the crown of the tooth can be prolonged.
Optionally, the processing technology of the wear-resistant combined type all-ceramic denture comprises the following steps:
s1, preparing to take a module: carrying out comprehensive examination on the residual teeth, gum mucous membranes, lips and cheeks, frenulum, tongue, alveolar bone, jaw bone and temporomandibular joint of a human body, taking a model after proper preparation of an abutment, and obtaining impressions of a tooth lacking area, the abutment and a base area of the patient;
s2, model scanning: scanning the occluded impression after taking the impression and acquiring impression information;
s3, designing a dental crown: professional design software is used for finishing the morphological design of the crown and the middle tooth base, the occlusion function is automatically adjusted, the occlusion relation between the crown and the occlusal teeth is adjusted, and the personalized requirements are met;
s4, CAM processing: calculating and composing tool paths by using professional software, and rapidly processing a high-precision full-anatomic crown and a high-precision full-anatomic tooth middle seat by using a professional milling machine;
s5, module cleaning: cleaning the powder on the surfaces of the crown and the middle tooth seat by using a soft towel;
s6, module dyeing: during dyeing, a dyeing agent is poured into a color mixing disc or a measuring cylinder in the suit, and the module is required to be adjusted by wearing gloves and using plastic tweezers in the operation process;
s7, drying and sintering: drying the prosthesis for 30-60 minutes by a drying lamp which is 80-100mm away from the prosthesis, putting the prosthesis into a special zirconia sintering furnace after drying, keeping the optimal temperature of dyeing and sintering at 1530 ℃, and taking out the prosthesis after heat preservation for 2 hours;
s8, prosthesis finishing: trimming the edge and the shape of the dental crown by using a special turning stone or a special diamond-grit wheel, and fully polishing the maxillofacial surface by using a polishing tool or selectively polishing the involution functional tip;
s9, sand blasting and glazing: carrying out sand blasting treatment on a crown by using aluminum oxide under the pressure of 2-2.5 MPa, and glazing by using zirconia enamel glaze paste;
s10, processing of the gum base: calculating and composing tool paths by using professional software, rapidly processing a high-precision gum base by using a professional milling machine, and embedding medical screws in the gum base;
s11, assembling the complete porcelain denture: firstly, the tooth center seat is in threaded connection with the medical screw, and then the tooth crown and the tooth center seat are assembled into a whole.
By adopting the technical scheme, firstly, the residual teeth, gum mucous membranes, lips and cheeks, frenulum, tongue, alveolar bone, jaw bone and temporomandibular joint of a human body are comprehensively inspected, the physiological condition of a patient is known in detail, the model is taken after the preparation of the abutment is proper, the impression of the tooth lacking area, the abutment and the base area of the patient is obtained, and the occlusal impression after the model is taken is scanned and the impression information is obtained. The special design software is used for finishing the morphological design of the crown and the middle tooth seat, automatically adjusting the occlusion function, adjusting the occlusion relation between the crown and the occlusion teeth, meeting the personalized requirements and enabling a patient to comfortably and freely chew food after wearing the all-ceramic false tooth in the future; calculating and composing tool paths by using professional software, and rapidly processing a high-precision full-anatomic tooth crown and a high-precision full-anatomic tooth middle seat by using a professional milling machine to ensure the processing precision; cleaning the powder on the surfaces of the crown and the midbase by using a soft towel to prepare for subsequent dyeing; during dyeing, a dyeing agent is poured into a color mixing disc or a measuring cylinder in the suit, and the module is required to be adjusted by wearing gloves and using plastic tweezers in the operation process; drying the prosthesis for 30-60 minutes by a drying lamp which is 80-100mm away from the prosthesis, putting the prosthesis into a special zirconia sintering furnace after drying, keeping the optimal temperature of dyeing and sintering at 1530 ℃, and taking out the prosthesis after heat preservation for 2 hours; trimming the edge and the shape of the dental crown by using a special turning stone or a special diamond-grit wheel, and fully polishing the maxillofacial surface by using a polishing tool or selectively polishing the involution functional tip; carrying out sand blasting treatment on the crown by using aluminum oxide under 2-2.5 MPa, and glazing by using zirconia enamel glaze paste, so that the hardness of the crown is improved, and the service life of the crown is prolonged; calculating and composing tool paths by using professional software, rapidly processing a high-precision gum base by using a professional milling machine, and embedding medical screws in the gum base; firstly, the tooth middle seat is in threaded connection with the medical screw, and then the tooth crown and the tooth middle seat are assembled into a whole through the connecting mechanism.
Optionally, in step S5, after the crown and the abutment are machined, the prosthesis is detached from the zirconia ceramic disc by using a special needle turning tool, and then the dentofacial fossa is trimmed and cleaned by using a split drill or a ball drill.
Through adopting above-mentioned technical scheme, use split drill or ball to bore and maintain the cleanness again to dentognathic face sulcus, can make the dentognathic face sulcus of dental crown be close the dentognathic face sulcus of real tooth, improve the patient and wear the comfort level that uses the all-ceramic artificial tooth.
Optionally, in step S7, when the prosthesis is placed in the crucible for sintering, the jaw of the prosthesis is placed towards the sintering bead to prevent the sintering bead from entering the inner crown, and when the bridge is placed, the crown is ensured to contact the sintering bead.
By adopting the technical scheme, the prosthesis is placed with the jaw face facing the direction of the sintered beads, so that the sintered beads can be prevented from entering the inner crown; when the connecting bridge is placed, the dental crown is ensured to contact the sintering bead, and the sintering and shaping effects of the dental crown can be ensured.
Optionally, in step S9, the crown is pre-heated using a porcelain oven at a temperature of 500 ° for 6 minutes prior to glazing, and then heated to 1000 ° at a rate of 50 °/minute for 10 minutes.
Through adopting above-mentioned technical scheme, preheat the dental crown according to foretell preheating process, can improve zirconia enamel and the connected shaping firmness of dental crown, improve zirconia enamel's wholeness.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the crown and the middle tooth seat are locked and fixed through the connecting mechanism, and if a certain crown is cracked, the whole crown can be replaced independently, so that the replacement process of the all-ceramic false tooth can be simplified, and the repair cost for replacing the all-ceramic false tooth is reduced;
2. the zirconia enamel layer is fixedly covered on the surface of the crown, zirconia has stable chemical properties of being insoluble in water, hydrochloric acid and dilute sulfuric acid, the zirconia enamel has high hardness, a patient can chew hard food, the zirconia enamel can prevent the crown from directly contacting the food, the crown can be protected, and the service life of the crown can be prolonged;
3. the diameter of the medical screw is gradually reduced in the direction close to the middle tooth base to form a circular truncated cone, when the middle tooth base is in threaded connection with the medical screw, the medical screw is not required to be aligned to a threaded hole of the middle tooth base, the medical screw is only required to be approximately aligned to the threaded hole, the medical screw gradually enters the threaded hole in the process, the external thread of the medical screw is gradually in threaded connection with the internal thread of the threaded hole, the connection speed of the middle tooth base and the medical screw is increased, and the connection process is simple, easy and convenient.
Drawings
Fig. 1 is a schematic structural view of a wear-resistant combined all-ceramic denture according to an embodiment of the present application;
FIG. 2 is an exploded view of a medical screw;
FIG. 3 is a schematic structural view embodying a threaded hole;
fig. 4 is a sectional view showing a locking groove.
Description of reference numerals: 1. a crown; 11. blind holes; 12. locking the groove; 13. zirconia enamel; 2. a dental center seat; 21. a threaded hole; 3. a gum base; 31. sinking a groove; 4. a medical screw; 5. a connecting mechanism; 51. a connecting seat; 511. a chute; 52. a connecting assembly; 521. a latch; 522. and a lock spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses wear-resisting combination formula complete porcelain artificial tooth, refer to fig. 1 and fig. 2, wear-resisting combination formula complete porcelain artificial tooth includes the tooth crown 1, seat 2 and gum seat 3 in the tooth, gum seat 3 is U type shell structure and is used for cooperating with the gum joint in the human oral cavity, gum seat 3 deviates from the cambered surface of gum and has seted up heavy groove 31, pre-buried medical screw 4 in the tank bottom of heavy groove 31, medical screw 4 twists in the tooth seat 2 with 2 threaded connection in the tooth, seat 2 is pegged graft with heavy groove 31 with the one end of medical screw 4 threaded connection and is cooperated, the one end that gum seat 3 was kept away from to seat 2 in the tooth is equipped with seat 2 in the tooth and 1 fixed connection's coupling mechanism 5 of tooth crown.
After crown 1 once carried out fixed connection through coupling mechanism 5 with seat in the tooth 2, coupling mechanism 5 carried out the dead lock with crown 1 and seat in the tooth 2 fixedly, just can not dismantle crown 1 and seat in the tooth 2 again. The gum seat 3 is through seat 2 in the tooth and the grafting cooperation of heavy groove 31, and it is spacing to cramp the one end of seat 2 in the tooth, improves the joint strength and the connection compactness of seat 2 in the tooth and gum seat 3 itself. After the patient uses the all-ceramic denture for a period of time, if a certain crown 1 is cracked, the whole combined type all-ceramic denture is taken out from the oral cavity of the patient, the crown 1 is broken, the new crown 1 is locked and fixed with the middle tooth seat 2 again through the connecting mechanism 5, and then the whole combined type all-ceramic denture is installed into the oral cavity of the patient again, so that the patient can continue to use the all-ceramic denture to chew food. Above-mentioned whole process of changing dental crown 1 can simplify the change process of complete porcelain artificial tooth, reduces the repair cost of changing complete porcelain artificial tooth.
Referring to fig. 2 and 3, the diameter of the medical screw 4 is gradually reduced in a direction close to the dental mediocre 2 to be in a truncated cone shape; the one end of seat in the tooth 2 towards gum seat 3 is seted up threaded hole 21, and medical screw 4 twists in threaded hole 21 with seat in the tooth 2 threaded connection. When carrying out threaded connection with seat 2 in the tooth and medical screw 4, need not to make medical screw 4 just to seat 2 in the tooth's screw hole 21, only need roughly aim at screw hole 21 with medical screw 4, get into the in-process in screw hole 21 gradually at medical screw 4, medical screw 4's external screw thread carries out threaded connection with the internal thread of screw hole 21 gradually for seat 2 in the tooth and medical screw 4's connection speed has made the connection process simple and easy more convenient.
Referring to fig. 1 and 4, the connecting mechanism 5 includes a connecting base 51 and at least two sets of connecting members 52, and in this embodiment, there are two sets of connecting members 52. One end integrated into one piece that gum seat 3 was kept away from to connecting seat 51 and tooth seat 2, coupling assembling 52 includes hasp 521 and locking spring 522, and blind hole 11 has been seted up towards the one end of tooth seat 2 to dental crown 1, and connecting seat 51 is pegged graft with blind hole 11 and is cooperated. Two mutually deviated sliding grooves 511 are formed in the circumferential side face of the connecting seat 51, the latch 521 is in sliding fit with the sliding grooves 511, two mutually opposite locking grooves 12 are formed in the inner wall of the blind hole 11, one end, away from the connecting seat 51, of the latch 521 is in plugging fit with the locking grooves 12, and in the direction away from the connecting seat 51, the side face, towards the crown 1, of the latch 521 inclines towards the direction away from the crown 1. The bolts 522 are located in the sliding slots 511, one end of each bolt 522 is fixedly connected with the bottom of the sliding slot 511, the other end of each bolt 522 is fixedly connected with the latch 521, and when the latch 521 is inserted into the locking slot 12, the bolts 522 are pressed.
When assembling the crown 1 and the middle tooth seat 2, and when assembling the crown 1 and the middle tooth seat 2, in the process that the crown 1 is close to the middle tooth seat 2, the opening edge of the blind hole 11 is abutted against the inclined surface of the lock latch 521, so that the lock latch can automatically slide into the sliding groove 511, and the lock spring 522 is compressed and shortened. When the connecting seat 51 is completely inserted into the blind hole 11 and the lock bolt is opposite to the lock groove 12, the lock spring 522 enables the lock bolt to be automatically inserted into the lock groove 12, so that the quick locking connection between the tooth center seat 2 and the tooth top crown 1 is realized, the whole process is quick, the connection is stable, and the precision is high.
Referring to fig. 4, a layer of zirconia enamel 13 is fixedly coated on the surface of the crown 1, the zirconia has stable chemical properties of being insoluble in water, hydrochloric acid and dilute sulfuric acid, the zirconia enamel 13 has high hardness, so that a patient can chew hard food, and the zirconia enamel 13 can prevent the crown 1 from directly contacting the food, so that the crown 1 can be protected and the service life of the crown 1 can be prolonged.
The implementation principle of the wear-resistant combined type all-ceramic denture is as follows: when the dental medi-nal seat 2 is screwed with the medical screw 4, the medical screw 4 is roughly aligned with the threaded hole 21, and in the process that the medical screw 4 gradually enters the threaded hole 21, the external thread of the medical screw 4 is gradually screwed with the internal thread of the threaded hole 21, so that the medical screw 4 is screwed with the dental medi-nal seat 2.
When the crown 1 is assembled with the middle tooth seat 2, the opening edge of the blind hole 11 abuts against the inclined surface of the lock bolt 521 in the process that the crown 1 is close to the middle tooth seat 2, so that the lock bolt can automatically slide into the sliding groove 511, and the lock spring 522 is compressed and shortened. When the connecting seat 51 is completely inserted into the blind hole 11 and the lock bolt is opposite to the lock groove 12, the lock spring 522 enables the lock bolt to be automatically inserted into the lock groove 12, and the quick locking connection between the tooth center seat 2 and the tooth top crown 1 is realized.
After the patient uses the all-ceramic denture for a period of time, if a certain crown 1 is cracked, the whole combined type all-ceramic denture is taken out from the oral cavity of the patient, the crown 1 is broken, the new crown 1 is locked and fixed with the middle tooth seat 2 again through the connecting mechanism 5, and then the whole combined type all-ceramic denture is installed into the oral cavity of the patient again, so that the patient can continue to use the all-ceramic denture to chew food. Above-mentioned whole process of changing dental crown 1 can simplify the change process of complete porcelain artificial tooth, reduces the repair cost of changing complete porcelain artificial tooth.
The embodiment of the application also discloses a processing technology of the wear-resistant combined type all-ceramic false tooth, which comprises the following steps:
s1, referring to fig. 1, the remaining teeth, gum mucosa, lips and cheeks, frenulum, tongue, alveolar bone, jaw bone and temporomandibular joint of the human body are examined comprehensively, the physiological condition of the patient is known in detail, and the model is taken after the preparation of the abutment is proper, to obtain the impression of the edentulous area, the abutment and the abutment area of the patient.
S2, referring to fig. 1, the bite impression after taking the impression is scanned and impression information is acquired.
S3, referring to FIG. 1, the form design of the crown 1 and the middle tooth seat 2 is completed by using professional design software, the occlusion function is automatically adjusted, the occlusion relation between the crown 1 and the occlusion teeth is adjusted, and the individual requirements are met.
S4, referring to FIG. 1, calculating and composing cutter paths by using professional software, and rapidly processing the crest crown 1 and the tooth middle seat 2 in high-precision full-anatomic form by using a professional milling machine.
S5, referring to fig. 1, after the crown 1 and the middle dental base 2 are processed, the prosthesis is taken down from the zirconia ceramic disc by using a special needle turning tool and separated, a cleft drill or a ball drill is used for trimming and cleaning the dentofacial fossa, and the powder on the surfaces of the crown 1 and the middle dental base 2 is cleaned by using a soft towel.
S6, referring to fig. 1, when dyeing, the dyeing agent is poured into the palette or graduated cylinder in the kit, and the mold needs to be adjusted by wearing gloves and using plastic tweezers during the operation.
S7, referring to fig. 1, when the prosthesis is placed in the crucible for sintering, the jaw face of the prosthesis is placed towards the direction of the sintering bead to prevent the sintering bead from entering the inner crown, and when the bridge is placed, the dental crown is ensured to contact the sintering bead. Drying the prosthesis for 30-60 minutes by the distance of the drying lamp being 80-100mm, putting the prosthesis into a special zirconia sintering furnace after drying, keeping the optimal temperature of dyeing and sintering at 1530 ℃, and taking out the prosthesis after heat preservation for 2 hours.
S8, referring to FIG. 1, using a special turning stone or a special emery vehicle to trim the edge and the shape of the dental crown, using a polishing tool to fully polish the maxillofacial area, or selecting to polish the involution functional tip;
s9, referring to fig. 1 and 4, before glazing, the crown 1 is subjected to a preheating treatment using a porcelain oven at a temperature of 500 ° for 6 minutes, and then to a temperature of 1000 ° at a rate of 50 °/minute for 10 minutes. The crown 1 is sandblasted with alumina at 2-2.5 MPa and glazed with zirconia enamel 13 glaze paste.
S10, referring to the figures 1 and 2, calculating and composing cutter paths by using professional software, rapidly processing a high-precision gum base 3 by using a professional milling machine, and embedding medical screws 4 into the gum base 3;
s11, referring to fig. 2 and 4, the dental coping 2 is first screwed with the medical screw 4, and then the crown 1 is assembled with the dental coping 2 as one body.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a wear-resisting combination formula porcelain artificial tooth which characterized in that: seat (2) and gum seat (3) in crown (1), the tooth, gum seat (3) for the casing and be arranged in with the gum joint cooperation of human oral cavity, the pre-buried medical screw (4) that has of top surface that deviates from the gum of gum seat (3), threaded hole (21) are seted up to the one end of seat (2) in the tooth, screw in threaded hole (21) are twisted in medical screw (4) and seat (2) threaded connection in the tooth, the one end that gum seat (3) were kept away from in the tooth (2) sets firmly link mechanism (5) with seat (2) in the tooth and crown (1) fixed connection.
2. A wear-resistant combined all-ceramic denture as claimed in claim 1, wherein: a sunk groove (31) is formed in the position of the pre-buried medical screw (4) of the gum seat (3), the medical screw (4) is located at the bottom of the sunk groove (31), and one end of the middle tooth seat (2) in threaded connection with the medical screw (4) is in plug-in fit with the sunk groove (31).
3. A wear-resistant combined all-ceramic denture as claimed in claim 1, wherein: the diameter of the medical screw (4) is gradually reduced in the direction close to the tooth middle seat (2) and is in a round table shape.
4. A wear-resistant combined all-ceramic denture as claimed in claim 1, wherein: coupling mechanism (5) are including connecting seat (51) and at least two sets of coupling assembling (52), coupling assembling (52) are including hasp (521) and locking spring (522), the one end rigid coupling of gum seat (3) is kept away from with seat (2) in the tooth in connecting seat (51), at least twice spout (511) that deviate from each other are seted up to the circumference side of connecting seat (51), blind hole (11) have been seted up towards the one end of seat (2) in the tooth in dental crown (1), connecting seat (51) and blind hole (11) grafting cooperation, at least twice locking groove (12) just to each other are seted up to the inner wall of blind hole (11), hasp (521) and spout (511) sliding fit, the one end and the locking groove (12) grafting cooperation of connecting seat (51) are kept away from in hasp (521), locking spring (522) are located spout (511) and are used for making hasp (521) automatic insertion in locking groove (12).
5. A wear-resistant combined all-ceramic denture according to claim 4, wherein: in the direction away from the connecting base (51), the latch (521) is inclined towards the side of the crown (1) in the direction away from the crown (1).
6. A wear-resistant combined all-ceramic denture as claimed in claim 1, wherein: the surface of the crown (1) is fixedly covered with a layer of zirconia enamel (13).
7. The processing technology of the wear-resistant combined type all-ceramic false tooth is characterized by comprising the following steps of: the method comprises the following steps:
s1, preparing to take a module: carrying out comprehensive examination on the residual teeth, gum mucous membranes, lips and cheeks, frenulum, tongue, alveolar bone, jaw bone and temporomandibular joint of a human body, taking a model after proper preparation of an abutment, and obtaining impressions of a tooth lacking area, the abutment and a base area of the patient;
s2, model scanning: scanning the occluded impression after taking the impression and acquiring impression information;
s3, designing a dental crown: professional design software is used for finishing the morphological design of the crown (1) and the middle tooth seat (2), the occlusion function is automatically adjusted, the occlusion relation between the crown (1) and the occlusion teeth is adjusted, and the personalized requirements are met;
s4, CAM processing: calculating and composing tool paths by using professional software, and rapidly processing a dental crown (1) and a dental middle seat (2) in a high-precision full-anatomic form by using a professional milling machine;
s5, module cleaning: cleaning the powder on the surfaces of the crown (1) and the middle tooth base (2) by using a soft towel;
s6, module dyeing: during dyeing, a dyeing agent is poured into a color mixing disc or a measuring cylinder in the suit, and the module is required to be adjusted by wearing gloves and using plastic tweezers in the operation process;
s7, drying and sintering: drying the prosthesis for 30-60 minutes by a drying lamp which is 80-100mm away from the prosthesis, putting the prosthesis into a special zirconia sintering furnace after drying, keeping the optimal temperature of dyeing and sintering at 1530 ℃, and taking out the prosthesis after heat preservation for 2 hours;
s8, prosthesis finishing: trimming the edge and the shape of the dental crown by using a special turning stone or a special diamond-grit wheel, and fully polishing the maxillofacial surface by using a polishing tool or selectively polishing the involution functional tip;
s9, sand blasting and glazing: carrying out sand blasting treatment on the dental crown (1) by using aluminum oxide under the pressure of 2-2.5 MPa, and glazing by using zirconia enamel (13) glaze paste;
s10, processing of the gum base (3): calculating and composing tool paths by using professional software, rapidly processing a high-precision gum seat (3) by using a professional milling machine, and embedding medical screws (4) in the gum seat (3);
s11, assembling the complete porcelain denture: firstly, the tooth middle seat (2) is in threaded connection with the medical screw (4), and then the tooth crown (1) and the tooth middle seat (2) are assembled into a whole.
8. The processing technology of the wear-resistant combined type all-ceramic denture according to claim 7, characterized in that: in step S5, after the crown (1) and the abutment (2) are machined, the prosthesis is removed from the zirconia ceramic disc by using a special needle turning tool, and then the dentofacial fossa is trimmed and cleaned by using a split drill or a ball drill.
9. The processing technology of the wear-resistant combined type all-ceramic denture according to claim 7, characterized in that: in step S7, when the prosthesis is placed in the crucible and sintered, the jaw of the prosthesis is placed toward the sintered bead to prevent the sintered bead from entering the inner crown, and when the bridge is placed, the crown is ensured to contact the sintered bead.
10. The processing technology of the wear-resistant combined type all-ceramic denture according to claim 7, characterized in that: in step S9, the crown (1) is subjected to a preheating treatment using a porcelain oven at a preheating temperature of 500 ° for 6 minutes, and then heated to 1000 ° at a rate of 50 °/minute for 10 minutes before glazing.
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