CN114917046A - Method for making digital movable complete denture - Google Patents
Method for making digital movable complete denture Download PDFInfo
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- CN114917046A CN114917046A CN202210561467.8A CN202210561467A CN114917046A CN 114917046 A CN114917046 A CN 114917046A CN 202210561467 A CN202210561467 A CN 202210561467A CN 114917046 A CN114917046 A CN 114917046A
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- jaw
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- upper jaw
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
- A61C13/0019—Production methods using three dimensional printing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
Abstract
The invention discloses a method for manufacturing a digital movable complete denture, which comprises the steps of firstly, taking a model according to oral cavity data of a patient and filling a gypsum model; scanning the plaster model to manufacture a detection type removable denture; wearing a detection type removable denture to detect and adjust various manufacturing indexes, inputting the detected and adjusted manufacturing indexes into software, finishing the arrangement of the artificial teeth and the design of the base, then respectively manufacturing the resin base and the artificial dentition, assembling the resin base, the artificial dentition and the plaster models of the upper jaw and the lower jaw on a jaw biting frame, respectively printing female molds of the artificial dentition of the upper jaw and the lower jaw by using silicon rubber, placing finished resin teeth in the female molds, fixing, filling the glue and polishing to obtain the artificial denture. The method has short manufacturing period, reduces the burden of a patient and simultaneously reduces the operation difficulty of a doctor.
Description
Technical Field
The invention relates to the field of complete denture manufacturing, in particular to a manufacturing method of a digital movable complete denture.
Background
With the national introduction into the aging society, the proportion of people without teeth in the mouth above 65 years is more than 6.8%, if the people are not repaired after the teeth are lost, the absorption of alveolar bones becomes very rapid, jaw bones are gradually reduced, the facial beauty of the people is affected, and the chewing efficiency is reduced or lost.
At present, main repairing modes aiming at a complete-mouth edentulous patient include edentulous jaw implantation and movable complete-mouth false teeth, and most complete-mouth edentulous patients are expected to stop walking due to the defects of high cost, requirement on the patient to be tolerant to operation, long repairing period and the like in the edentulous jaw implantation repairing, so that the movable complete-mouth false teeth are selected for repairing. With the popularization of the digital oral repair technology, the digital removable complete denture technology is mature, but the following defects still exist in the manufacturing process:
1. patients generally need to come to a hospital for taking a model, taking an impression and confirming a correct occlusion relation for multiple times, and the operation steps are very complicated; during specific operation, a clinician generally takes a model of a patient, then sends the taken plaster model to a processing station for model scanning, and then a personalized tray is manufactured by digital software or the doctor, and the personalized tray is used as a secondary impression of the patient; then the plaster model of the secondary impression is sent to a processing station for model scanning, a wax dike try-on denture printed in 3D is manufactured, and a patient confirms the occlusion relation, the anterior teeth area labial teeth relation, the aesthetic degree and the like through try-on denture; and then sending the confirmed relation parameters to a processing station, scanning the plaster model again, determining the occlusion relation, then completing tooth arrangement and base design on design software, separately manufacturing a resin base and artificial teeth through a 3D printer or digital cutting equipment, bonding the base and the artificial dentition into a whole, and finally grinding, polishing and finishing.
The operation steps are long, the patient needs to go to and fro many times, inconvenience is brought to the patient, meanwhile, the operation difficulty of a doctor is increased, the manufacturing period of the false tooth is prolonged, and the production cost is increased.
2. At present, 3D printed base materials, resin tooth materials or cutting materials on the market cannot be normally sold on the market because national medical appliance class 3 registration certificates and production licenses are not obtained.
3. The hardness, the wear resistance, the attractiveness and the smoothness of the existing 3D printing resin tooth material or cutting material on the market are not as good as those of the conventional finished resin tooth product.
Disclosure of Invention
The invention aims to provide a manufacturing method of a digital full denture, which aims to reduce the manufacturing period of the full denture, reduce the operation difficulty of doctors and reduce the treatment cost of a patient, not only can use the design and manufacturing process of an advanced digital full denture, but also can avoid the defects of the existing digital full denture manufacturing, and provide a digital product meeting the national industry standard for the patient.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for manufacturing a digital removable complete denture comprises the following steps:
firstly, taking a model according to oral cavity data of a patient, and filling a plaster model;
secondly, scanning the plaster model obtained in the first step to manufacture a detection type removable denture;
thirdly, wearing the detection type removable denture to detect and adjust various manufacturing indexes so as to obtain various manufacturing indexes required by post-manufacturing of the digital removable complete denture;
and fourthly, inputting various manufacturing indexes obtained in the third step into software to finish the arrangement of the artificial teeth and the design of the base, respectively manufacturing the resin base and the artificial dentition through a 3D printer or a cutting machine, assembling the resin base, the artificial dentition and the upper and lower jaw plaster models on a jaw frame according to the determined occlusion relation, respectively printing female molds of the upper and lower jaw artificial dentition by using silicon rubber, placing finished resin teeth in the female molds, fixing, filling the rubber and polishing to finish the preparation of the digital movable complete denture.
Further, the detection type movable denture comprises an upper jaw base, a jaw dike, teeth and a lower jaw base, wherein 6 teeth are arranged in 3-3 tooth positions of the front tooth area of the upper jaw base, and flat jaw dikes are arranged in the other tooth positions of the upper jaw base; a maxillary palate plate is arranged in the middle of the maxillary base, and a cavity which does not penetrate through the maxillary palate plate is formed in the middle area of the front palate part of the maxillary palate plate; 4 teeth are arranged in the front tooth area 2-2 tooth positions of the lower jaw base, teeth are arranged in the tooth positions 4, 5 and 6 on the two sides of the lower jaw base, and the tooth positions 3 and 7 on the two sides of the lower jaw base are vacant.
Further, the manufacturing process of the detection type removable denture is as follows:
(1) preparing a maxilla base and a mandible base by adopting a 3D printing resin material designed by digital software according to the data scanned by the plaster model;
(2) determining the maxillary central line of the maxillary base by scanning anatomical marks of two palatal foveola midpoints at the rear edge of the upper jaw, a palatal middle seam, the longitudinal midpoint of an incisor nipple and an upper labial frenum in the plaster model data, determining the labial lingual inclination of the upper front teeth in the maxillary base by judging 1, 2 and 3 types of occlusion modes of a patient, and determining the labial lingual positions of teeth in 3 to 3 tooth positions in the front tooth area of the maxillary base according to the data; a flat jaw dike is arranged by taking the alveolar crest above the other teeth of the upper jaw base support as the center, and a cavity which does not penetrate through the upper jaw palatal plate is formed in the middle area of the front palate part of the upper jaw palatal plate of the upper jaw base support;
(3) setting the height of the occlusion plane of the back tooth area of the upper jaw base support to be 6.5-8.5mm away from the incisor of the wing, setting the height of the occlusion plane of the middle incisor area to be 10-12mm away from the midpoint of the incisor nipple, adjusting the occlusion plane of the upper jaw formed according to the height to enable the occlusion plane of the upper jaw to be parallel to the plane formed by the incisor of the double side wing and the midpoint of the incisor nipple, and finishing the arrangement of the front tooth area of the upper jaw base support from 3 to 3 teeth positions according to the height of the occlusion plane of the upper jaw;
(4) the height of the occlusal plane of the posterior dental area on both sides of the lower jaw base is flush with the 1/2 position of the posterior pad of the lower jaw molar on both sides in the data of the scanning plaster model; determining the midline of the anterior dental area of the mandibular base by 1/2 of the posterior pad of the bilateral mandibular molars, the position of the lingual frenulum in the anterior mandibular portion, and the determined maxillary midline in the scanned data; the vertical height of the occlusal plane of the anterior teeth of the lower jaw base is determined by the vertical height of the formed rear parts of the upper and lower jaw bases and the relation with the anterior teeth area of the upper jaw base;
(5) according to the parameters of the steps, determining the inclination of the anterior labial and lingual surfaces in the lower jaw base according to the occlusion forms of the types 1, 2 and 3 of the patient and the inclination of the labial and lingual surfaces of the upper anterior teeth in the upper jaw base 1, arranging the positions 2 to 2, 4, 5 and 6 on the two sides of the anterior teeth area of the lower jaw base according to the scanning data, and leaving the positions 3 and 7 on the two sides vacant.
Further, the digital complete denture is manufactured as follows:
(1) inputting various manufacturing indexes of detection of the detection type removable denture into software, finishing arrangement of the artificial teeth and design of the base through the software, and manufacturing a resin base and an artificial dentition through printing of a 3D printer or cutting of a precision machine tool;
(2) assembling the manufactured resin base, the artificial dentition, an upper jaw gypsum model and a lower jaw gypsum model of a patient on a jaw frame, taking off the lower jaw artificial dentition after the jaw frame is closed, taking a female die of the upper jaw artificial dentition at the lower jaw base artificial dentition part by using silicon rubber offset, and putting finished resin teeth of the same type determined by digital software into the female die; taking off the upper jaw base and the upper jaw artificial dentition, determining the occlusion relation on a jaw biting frame by a female die provided with finished resin teeth, the lower jaw base and a lower jaw plaster model, fixing the finished resin teeth in the female die on the upper jaw plaster model by wax, removing the female die, and finishing the forming of the upper jaw wax base;
(3) reinstalling the lower jaw artificial dentition removed in the above steps into place, closing the jaw frame, closing an upper jaw plaster model fixed with finished resin teeth and a wax base and a lower jaw artificial dentition, a lower jaw base and a lower jaw plaster model, taking a female die at the buccal-lingual side of the upper jaw finished resin teeth and the lower jaw artificial dentition by using silastic printing, wrapping the upper jaw finished resin teeth by the upper half part of the inner cavity of the female die so as to fix the female die on the upper jaw, putting the finished resin teeth with the same model in the lower half part of the inner cavity of the female die, removing the lower jaw base and the lower jaw artificial dentition, determining the occlusion relation on the jaw frame by the female die provided with the upper jaw plaster model, the upper jaw wax base, the finished resin teeth with the same model and the lower jaw plaster model, fixing the finished resin teeth at the lower half part of the inner cavity of the female die on the lower jaw plaster model by using wax, and removing the female die to complete the lower jaw wax base molding;
(4) and on the manufactured upper and lower jaw wax bases, the finished resin teeth are filled with glue and polished conventionally, and then the complete denture is manufactured.
Further, the teeth are cut from wax plates.
Further, the width of the jaw dike is 18-20mm, and the jaw dike is formed by cutting a wax plate;
furthermore, the thickness of the maxillary palate plate is 2-2.5mm, the hollow cavity is circular, the diameter of the hollow cavity is 1.5cm, and the depth of the hollow cavity is 1.5 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the method has the advantages that the operation steps of the patient needing to go to and fro the hospital in the prior art are detected and adjusted through the manufactured detection type false tooth, the operation steps are shortened to three times, the manufactured digital movable complete denture can be taken, the manufacturing period is greatly shortened, the cost is saved, the burden of the patient is lightened, and the operation difficulty of a doctor is reduced.
2. The plane formed by the maxillary double-lateral-wing maxillary incisal tracks and the midpoints of the incisor nipples is almost unchanged in the life of a human and is parallel to the maxillary occlusal plane, and the maxillary occlusal plane determined according to the theory is more accurate and stable.
3. The method for forming female die arrangement finished product resin teeth and forming the wax base by utilizing silicon rubber not only applies the convenience of digital design, but also avoids the problem of the existing 3D printing of the registration certificate of artificial teeth and base material, and can also be convenient for installing a metal base mesh in a clinical common palate side rubber base or replacing the tooth arrangement and the glue filling of the movable complete denture of the palate side resin plate by a palate side metal plate, and the traditional digital movable complete denture base only can be a resin rubber base and cannot implement the method.
4. The teeth of the upper jaw and the lower jaw in the detection type false tooth are formed by cutting wax plates, the performance of the detection type false tooth is harder than that of common wax, the detection type false tooth is not easy to deform, and a doctor can conveniently adjust the detection type false tooth according to the aesthetic relationship and the preference of the labial teeth of a patient due to the wax material; and the teeth and the jaw embankment part are made of wax, so that the adjustment is easier for a patient needing to reduce the vertical occlusion distance.
5. Because the jaw surface area of the lower jaw of a complete-mouth tooth loss patient is much smaller than that of the upper jaw, and the bone absorption degree is much more serious than that of the upper jaw, when the detection type false tooth is manufactured, the occlusion stability of the lower jaw is firstly considered, and the teeth positions of the lower jaws 4, 5 and 6 are arranged by taking the center of a jaw dike of the lower jaw as a reference and are contacted with the jaw dike plane of a posterior jaw area of the upper jaw.
6. The lower jaw of the detection type false tooth is not provided with 3 and 7 tooth positions, the jaw embankment is arranged in the back tooth area of the upper jaw and is not provided with teeth, the width of the jaw embankment is 2mm wider than that of the conventional jaw embankment, occlusion interference can be eliminated when the occlusion relation of a patient is collected, and the patient can find a comfortable occlusion position more easily.
7. The front part of the maxillary and palatal plate of the detection type false tooth is provided with a circular cavity, and when the occlusion relation of a patient is collected, the back of the tongue of the patient is attached in the cavity, so that the position of the lower jaw of the patient can be restored, and the collection of the data of the occlusion relation becomes smooth and accurate.
8. The manufacturing of the detection type false tooth uses the printed or cut resin base, the precision is good, the detection type false tooth is attached to the mucosa, the adsorption force and the stability are relatively high, the teeth and the jaw dike adopt the cutting type wax plate with high strength, and therefore when the occlusion relation of a patient with unstable occlusion relation caused by long tooth missing time or unhealthy temporomandibular joint and muscle is collected, the patient can wear the detection type false tooth for hours or days, and then the occlusion relation is collected, so that the effect of the therapeutic false tooth is achieved.
9. If the precision and the range of the first impression taking of a patient have problems or the oral mucosa of the patient has problems, the prior operation needs to carry out secondary impression; the base for detecting the false tooth is made of 3D printing resin, so that the performance requirement of making an individual tray is met; the jaw dike and the teeth are formed by cutting wax plates, the jaw dike and the teeth have certain strength, and after the occlusion relation is determined through the above operations, a precise functional impression which cannot be obtained by a traditional secondary precise impression film can be obtained in the last step under the correct occlusion state, so that the false tooth to be detected can be used as a personalized tray to carry out secondary impression in the last step.
10. If it is desired to increase the vertical height of the occlusion of an individual patient, it is much easier to visualize the patient wearing the detection type denture as a dentition patient, regardless of whether the vertical height of the occlusion is increased or the occlusion relationship is acquired, than for an edentulous patient.
Drawings
Fig. 1 is a schematic structural view of a detection type removable denture;
FIG. 2 is a schematic view of the test removable denture being worn in the mouth;
FIG. 3 is an assembly diagram of the upper and lower jaw plaster models on the jaw-biting frame
FIG. 4 is a graphical representation of anatomical landmarks for the upper jaw without a tooth;
FIG. 5 is a view of anatomical landmarks of the lower mandible and the edentulous jaw;
in the figure: 1. the upper jaw base, 2, a jaw dike, 3, teeth, 4, a lower jaw base, 5, an upper jaw palate plate, 6, a cavity, 7, an upper alveolar ridge crest, 8, an upper jaw plaster model, 9, a lower jaw plaster model, 10, a jaw biting frame, 11, a palatal fovea middle point, 12, an incisor nipple, 13, an upper lip frenum, 14, a wing upper jaw incisure, 15, a lower jaw molar back cushion, 16 and a tongue frenum.
Detailed Description
Embodiments of the present invention are explained in detail below with reference to the drawings.
As shown in fig. 1 to 4, the method for manufacturing the digital removable complete denture of the present embodiment is as follows:
firstly, taking a model according to oral cavity data of a patient, and filling a plaster model;
secondly, scanning the plaster model obtained in the first step to manufacture the detection type removable denture, wherein the manufacturing process comprises the following steps:
(1) preparing an upper jaw base 1 and a lower jaw base 4 by adopting a 3D printing resin material designed by digital software according to the data scanned by the plaster model;
(2) determining the maxillary central line of the maxillary base support 1 by anatomical marks of two palatal foveola central points 11, palatal centre joints, longitudinal central points of incisor nipples 12 and an upper labial frenum 13 on the maxillary trailing edge in scanning plaster model data, judging 1, 2 and 3 occlusion modes of a patient, determining the labial-lingual inclination of the upper anterior teeth in the maxillary base support 1, and determining the labial-lingual positions of teeth 3 from the anterior tooth area 3 to the 3 teeth position of the maxillary base support 1 according to the data; a flat jaw dike 2 is arranged by taking the alveolar crest 7 above the rest teeth of the upper jaw base 1 as the center, and a cavity 6 which does not penetrate through the upper jaw palatal plate 5 is formed in the middle area of the front palate part of the upper jaw palatal plate 5 of the upper jaw base 1;
(3) the height of the occlusion plane of the posterior dental area of the upper jaw base 1 is set to be 6.5-8.5mm away from the incisal spaces 14 of the wings, the height of the occlusion plane of the middle incisal area is set to be 10-12mm away from the middle points of the incisal papillae 12, the occlusion plane of the upper jaw formed according to the height is adjusted to enable the occlusion plane of the upper jaw to be parallel to the plane formed by the middle points of the incisal papillae 12 of the double-wing upper jaw, and the arrangement of the anterior dental areas 3-3 of the upper jaw base 1 is completed according to the height of the occlusion plane of the upper jaw;
(4) the height of the occlusal plane of the posterior dental area on both sides of the mandibular base 4 is flush with the 1/2 of the posterior mandibular molar pad 15 on both sides in the scanned plaster model data; the midline of the anterior dental area of the mandibular base 4 is determined by scanning 1/2 locations on the posterior mandibular molar pad 15, the anterior mandibular lingual frenulum 16, and the determined maxillary midline; the vertical height of the occlusal plane of the anterior teeth of the lower jaw base 4 is determined by the vertical height of the formed rear parts of the upper and lower jaw bases and the relation with the anterior teeth area of the upper jaw base 1;
(5) according to the parameters of the steps, determining the inclination of the lip and the tongue of the front teeth in the lower jaw base 4 according to the occlusion forms of 1, 2 and 3 types of the patient and the inclination of the lip and the tongue of the upper front teeth in the upper jaw base 1, and arranging the positions 2 to 2 in the front teeth area of the lower jaw base 4, the positions 4, 5 and 6 on the two sides and leaving the positions 3 and 7 on the two sides vacant.
After the detection type removable denture is manufactured, delivering the detection type removable denture to a clinician, wearing the detection type removable denture in the mouth of a patient, and carrying out detection and adjustment to obtain various manufacturing indexes required for manufacturing the digital removable complete denture in the next step; when the occlusion relation of the patient is collected, the back of the tongue of the patient is attached in the cavity 6, so that the patient can recover the lower jaw position, and the data of the occlusion relation can be collected more smoothly and accurately.
Fourthly, manufacturing the digital movable complete denture, wherein the manufacturing process comprises the following steps:
(1) inputting various manufacturing indexes of the detection type removable denture into software, finishing the arrangement of the artificial teeth and the design of the base through the software, and manufacturing a resin base 8 and the artificial dentition through printing of a 3D printer or cutting of a precision machine tool;
(2) assembling the manufactured resin base, the artificial dentition and the upper jaw gypsum model 8 and the lower jaw gypsum model 9 of the patient on a jaw biting frame 10, taking off the lower jaw artificial dentition after the jaw biting frame 10 is closed, taking a female die of the upper jaw artificial dentition from the lower jaw base artificial dentition part by using silicon rubber offset, and placing finished resin teeth of the same type determined by digital software into the female die; taking off the upper jaw base and the upper jaw artificial dentition, determining the occlusion relation on a jaw biting frame 10 by a female die provided with finished resin teeth, a lower jaw base and a lower jaw plaster model 9, fixing the finished resin teeth in the female die on an upper jaw plaster model 8 by wax, removing the female die, and finishing the forming of the upper jaw wax base;
(3) reinstalling the mandible artificial dentition taken away in the steps, closing the jaw biting frame 10, closing the upper jaw plaster model 8 fixed with the finished product resin teeth and the wax base, the mandible artificial dentition, the mandible base and the mandible plaster model 9, taking a female die on the cheek-tongue side of the finished product resin teeth and the mandible artificial dentition by using silastic printing, the upper half part of the female die inner cavity is wrapped with an upper jaw finished product resin tooth so as to fix the female die on an upper jaw, the finished product resin teeth with the same model are placed in the lower half part of the female die inner cavity, a lower jaw base and a lower jaw artificial dentition are taken off, the occlusion relation is determined on a jaw biting frame 10 by a female die provided with an upper jaw plaster model 8, an upper jaw wax base, the finished product resin teeth on the lower half part of the female die inner cavity, and a lower jaw wax base is fixed on the lower jaw plaster model 9 by wax, and the female die is removed to finish the lower jaw wax base forming;
(4) and (3) on the upper and lower jaw wax bases which are manufactured, the finished resin teeth are subjected to conventional glue filling and polishing, and then the complete denture is manufactured.
The above-described jaw frame 10 is prior art and is not intended to be within the scope of the present invention, and its construction and method of use are not described in detail.
The detection type removable denture manufactured by the invention is a detection device which integrates four functions of personalized model taking tray, denture try-on, denture treatment and occlusion relation acquisition and has multiple functions; the dental prosthesis comprises an upper jaw base 1 prepared by 3D printing resin materials, a jaw dike 2 formed by cutting a wax plate, teeth 3 formed by cutting a wax plate and a lower jaw base 4 prepared by 3D printing resin materials; 3 to 3 teeth of the front tooth area of the upper jaw base support 1 are provided with 6 teeth 3, the rest teeth of the upper jaw base support 1 are provided with flat jaw dikes 2, and the width of the jaw dikes 2 is 20 mm; the middle part of the upper jaw base support 1 is an upper jaw palate plate 5, the thickness of the upper jaw palate plate 5 is 2.5mm, the central area of the front palate part of the upper jaw palate plate 5 is provided with a circular cavity 6 which does not penetrate through the upper jaw palate plate 5, the diameter of the cavity 6 is 1.5cm, and the depth of the cavity 6 is 1.5 mm; 4 teeth 3 are arranged at the teeth positions 2 to 2 in the front tooth area of the lower jaw base 4, teeth 3 are arranged at the teeth positions 4, 5 and 6 on the two sides of the lower jaw base 4, and the teeth positions 3 and 7 on the two sides of the lower jaw base 4 are vacant. The artificial tooth is worn in the mouth of a patient, and detection and adjustment of various indexes can be performed, so that the function of trying on the artificial tooth is realized; if the precision and range of the first impression taking of the patient have problems or the oral mucosa of the patient has problems, a secondary impression is needed in the prior operation; the false tooth detection device can be used as a personalized tray for secondary impression; when the occlusion relation of a patient with unstable occlusion relation caused by long time of missing teeth or unhealthy temporomandibular joint and muscle needs to be acquired, the patient can wear the detection type false tooth for hours or days and then acquire the occlusion relation, thereby playing the role of treating the false tooth. Through the manufactured detection type removable denture, the patient can take the manufactured digital removable complete denture only by going to and fro three times, so that the manufacturing period is greatly shortened, the cost is saved, and the burden of the patient is reduced.
Claims (7)
1. The manufacturing method of the digital movable complete denture is characterized in that the manufacturing process of the complete denture is as follows:
firstly, taking a model according to oral cavity data of a patient, and filling a plaster model;
secondly, scanning the gypsum model obtained in the first step to manufacture a detection type removable denture;
thirdly, wearing the detection type removable denture to detect and adjust various manufacturing indexes so as to obtain various manufacturing indexes required by post-manufacturing of the digital removable complete denture;
and fourthly, inputting various manufacturing indexes obtained in the third step into software to finish the arrangement of the artificial teeth and the design of the base, respectively manufacturing the resin base and the artificial dentition through a 3D printer or a cutting machine, assembling the resin base, the artificial dentition and the upper and lower jaw plaster models on a jaw frame according to the determined occlusion relation, respectively printing female molds of the upper and lower jaw artificial dentition by using silicon rubber, placing finished resin teeth in the female molds, fixing, filling the rubber and polishing to finish the preparation of the digital movable complete denture.
2. The manufacturing method of the digital movable complete denture as claimed in claim 1, wherein the detection type movable denture comprises an upper jaw base (1), a jaw dike (2), teeth (3) and a lower jaw base (4), 6 teeth (3) are arranged in 3 to 3 tooth positions in the front tooth area of the upper jaw base (1), and the flat jaw dike (2) is arranged in the rest tooth positions of the upper jaw base (1); a maxillary palate plate (5) is arranged in the middle of the maxillary base (1), and a cavity (6) which does not penetrate through the maxillary palate plate (5) is formed in the central area of the front palate part of the maxillary palate plate (5); 4 teeth (3) are arranged at the 2-2 tooth positions in the front tooth area of the lower jaw base (4), teeth (3) are arranged at the 4, 5 and 6 tooth positions on the two sides of the lower jaw base (4), and the 3 and 7 tooth positions on the two sides of the lower jaw base (4) are vacant.
3. The method for manufacturing a digital removable complete denture according to claim 1 or 2, wherein the detection type removable denture is manufactured by the following process:
(1) preparing a maxilla base (1) and a mandible base (4) by adopting a 3D printing resin material designed by digital software according to the data scanned by the plaster model;
(2) determining the maxillary midline of a maxillary base support (1) by anatomical marks of two palatal foveola midpoints (11) at the maxillary trailing edge, a palatal midline, a longitudinal midpoint of an incisor nipple (12) and an upper labial frenum (13) in scanning plaster model data, judging 1, 2 and 3 occlusion forms of a patient to determine the inclination of the upper anterior labial lingual area in the maxillary base support (1), and determining the labial lingual positions of teeth (3) from 3 to 3 teeth areas in the anterior dental area of the maxillary base support (1) according to the data; a flat jaw dike (2) is arranged by taking the alveolar ridge top (7) above the rest teeth of the upper jaw base support (1) as the center, and a cavity (6) which does not penetrate through the upper jaw palate plate (5) is formed in the middle area of the front palate part of the upper jaw palate plate (5) of the upper jaw base support (1);
(3) the height of the occlusion plane of the posterior tooth area of the upper jaw base (1) is set to be 6.5-8.5mm away from the wing upper jaw incisal space (14), the height of the occlusion plane of the middle incisal area is set to be 10-12mm away from the middle point of an incisor nipple (12), the occlusion plane of the upper jaw formed according to the height is adjusted, the occlusion plane of the upper jaw is enabled to be parallel to the plane formed by the middle points of the double wing upper jaw incisor space (14) and the incisor nipple (12), and the arrangement of the 3-3 tooth positions of the anterior tooth area of the upper jaw base (1) is completed according to the height of the occlusion plane of the upper jaw;
(4) the height of occlusion planes of the posterior dental areas on both sides of the lower jaw base (4) is flush with the 1/2 position of the posterior pad (15) of the lower jaw molars on both sides in the data of the scanning plaster model; the midline of the anterior dental area of the mandibular base (4) is determined by the 1/2 position of the bilateral mandibular molars posterior pad (15), the position of the mandibular anterior lingual frenulum (16) in the scan data, and the determined maxillary midline; the vertical height of the occlusion plane of the anterior teeth of the lower jaw base (4) is determined by the vertical height of the formed rear parts of the upper and lower jaw bases and the relation with the anterior teeth area of the upper jaw base (1);
(5) according to the parameters of the steps, determining the inclination of the anterior labial lingual inclination in the lower jaw base (4) according to the occlusion forms of classes 1, 2 and 3 of the patient and the inclination of the labial lingual inclination of the upper anterior teeth in the upper jaw base (1), arranging the 2 to 2 tooth positions, the 4, 5 and 6 tooth positions on the two sides and leaving the 3 and 7 tooth positions on the two sides vacant according to the scanning data.
4. The method of claim 1, wherein the digital removable complete denture is produced by the following steps:
(1) inputting various manufacturing indexes of detection of the detection type removable denture into software, finishing arrangement of the artificial teeth and design of the base through the software, and manufacturing a resin base and an artificial dentition through printing of a 3D printer or cutting of a precision machine tool;
(2) assembling the manufactured resin base, the artificial dentition, an upper jaw gypsum model (8) of a patient and a lower jaw gypsum model (9) on a jaw biting frame (10), taking off the lower jaw artificial dentition after the jaw biting frame (10) is closed, taking a female die of the upper jaw artificial dentition from the lower jaw base artificial dentition part by using silastic offset, and putting finished resin teeth of the same type determined by digital software into the female die; taking off the upper jaw base and the upper jaw artificial dentition, determining the occlusion relation on a jaw frame (10) by a female die provided with finished resin teeth, a lower jaw base and a lower jaw plaster model (9), fixing the finished resin teeth in the female die on the upper jaw plaster model (8) by wax, removing the female die, and finishing the forming of the upper jaw wax base;
(3) reinstalling the mandible artificial dentition removed in the steps in place, closing a jaw-biting frame (10), closing an upper jaw plaster model (8) fixed with finished resin teeth and a wax base and a lower jaw artificial dentition, a lower jaw base and a lower jaw plaster model (9), taking female dies on the bucco-lingual sides of the finished resin teeth and the lower jaw artificial dentition by using silastic printing, wrapping the finished resin teeth of the upper jaw on the upper half part of the inner cavity of the female dies so as to fix the female dies on the upper jaw, putting the finished resin teeth of the same type on the lower half part of the inner cavity of the female dies, removing the lower jaw base and the lower jaw artificial dentition, determining the occlusion relation on the jaw-biting frame (10) by the female dies provided with the upper jaw plaster model (8), the upper jaw wax base and the finished resin teeth and the lower jaw plaster model (9), and fixing the finished resin on the lower half part of the inner cavity of the female dies on the lower jaw plaster model (9) by using wax, removing the female die to complete the forming of the lower jaw wax base;
(4) and on the manufactured upper and lower jaw wax bases, the finished resin teeth are filled with glue and polished conventionally, and then the complete denture is manufactured.
5. The method for manufacturing a digital removable complete denture according to claim 2, wherein the teeth (3) are cut from wax plates.
6. The manufacturing method of the digital removable complete denture according to claim 2, wherein the width of the jaw dike (2) is 18-20mm, and the jaw dike (2) is cut from wax plate.
7. The method for manufacturing a digital full denture as claimed in claim 2, wherein the thickness of the maxilla plate (5) is 2-2.5mm, the cavity (6) is circular, the diameter of the cavity (6) is 1.5cm, and the depth of the cavity (6) is 1.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210561467.8A CN114917046A (en) | 2022-05-23 | 2022-05-23 | Method for making digital movable complete denture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210561467.8A CN114917046A (en) | 2022-05-23 | 2022-05-23 | Method for making digital movable complete denture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531017A (en) * | 2022-08-30 | 2022-12-30 | 中国人民解放军空军军医大学 | Preparation method of complete denture with personalized base polishing surface and neutral region tooth arrangement |
| CN116350371A (en) * | 2023-04-06 | 2023-06-30 | 广东省极数增材医疗科技有限公司 | Occlusion relation remolding method and 3D printing method for adsorptive false tooth |
| CN117379207A (en) * | 2023-10-12 | 2024-01-12 | 北京大学口腔医学院 | Digital generation method of removable denture pressure model |
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2022
- 2022-05-23 CN CN202210561467.8A patent/CN114917046A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531017A (en) * | 2022-08-30 | 2022-12-30 | 中国人民解放军空军军医大学 | Preparation method of complete denture with personalized base polishing surface and neutral region tooth arrangement |
| CN115531017B (en) * | 2022-08-30 | 2023-11-03 | 中国人民解放军空军军医大学 | Preparation method of complete denture with personalized base grinding surface and neutral area tooth arrangement |
| CN116350371A (en) * | 2023-04-06 | 2023-06-30 | 广东省极数增材医疗科技有限公司 | Occlusion relation remolding method and 3D printing method for adsorptive false tooth |
| CN116350371B (en) * | 2023-04-06 | 2024-04-12 | 广东省极数增材医疗科技有限公司 | Occlusion relation remolding method and 3D printing method for adsorptive false tooth |
| CN117379207A (en) * | 2023-10-12 | 2024-01-12 | 北京大学口腔医学院 | Digital generation method of removable denture pressure model |
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