CN113995534A - Method for manufacturing occlusal pad - Google Patents
Method for manufacturing occlusal pad Download PDFInfo
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- CN113995534A CN113995534A CN202111367425.2A CN202111367425A CN113995534A CN 113995534 A CN113995534 A CN 113995534A CN 202111367425 A CN202111367425 A CN 202111367425A CN 113995534 A CN113995534 A CN 113995534A
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- occlusal
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 48
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 35
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000004945 silicone rubber Substances 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 description 8
- 210000000214 mouth Anatomy 0.000 description 6
- 239000000203 mixture Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/0006—Impression trays
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
Abstract
The invention discloses a method for manufacturing an occlusal pad, which comprises an impression tray, a silicon rubber impression, an occlusal pad and an invisible appliance required by the manufacturing method, and comprises the following specific steps: the method comprises the following steps: grinding the occlusal surface of the back dental area of the bracket-free invisible appliance, taking the lower jaw part of a plurality of pairs of invisible appliances needing to be made into occlusal pads and opened for occlusion, and grinding the occlusal surface of the back dental area of the lower jaw invisible appliance roughly by using a low-speed grinding machine; step two: mixing and stirring self-setting denture base materials; the invention adopts the method of directly manufacturing the occlusal pad by using the self-setting denture base material on the invisible appliance and simultaneously adopts the silicon rubber impression technology, so that the occlusal pad can be simply, conveniently and quickly manufactured on a plurality of pairs of appliances when a patient is subjected to one-time re-examination, each pair of occlusal pads does not need to be tried on and grinded repeatedly, the operation time beside a chair is saved, more importantly, the re-examination interval is increased, and great convenience is provided for the patient.
Description
Technical Field
The invention belongs to the technical field of orthodontic tooth correction, and particularly relates to a method for quickly manufacturing a bite block.
Background
The bracket-free invisible appliance needs to be taken down when eating, for the case of reverse occlusion or other cases with occlusion interference, the interference between the upper and lower teeth is difficult to be relieved due to the occlusion movement, and for solving the problem, an occlusion cushion can be manufactured on the teeth before the appliance is worn by a patient, but the manufacturing is more complicated, the shape of the occlusion cushion needs to be modified in the correction process, which undoubtedly causes adverse effects on the fit degree of the invisible appliance and the tooth surface; the other type of occlusal pad consists of a denture base material and a clamping ring bent by a stainless steel wire, has large volume and poor comfort, and can be used only when eating, the patient only wears the invisible orthodontic appliance at other time, the locking relation between the upper jaw and the lower jaw cannot be released, the teeth cannot move to the normal position, therefore, in the prior art, an orthodontist can choose to directly manufacture the occlusal pad on the invisible appliance, the self-setting denture base material is adopted to line the occlusal surface of the invisible appliance, the occlusal pad is manufactured after the material is completely cured and is ground to a proper height, however, in the bracket-free invisible orthodontic technology, teeth move slowly, only one pair of invisible orthodontic devices with occlusal pads can not completely remove occlusal interference, and a patient usually needs a plurality of pairs of invisible orthodontic devices with occlusal pads and wears and replaces the invisible orthodontic devices according to medical advice to achieve the purpose of removing the occlusal interference.
However, in the bracket-free invisible orthodontic technology, a patient usually needs to sequentially replace a new appliance every 2 weeks, for the patient needing to make the occlusal pad, the patient needs to go to the hospital for a double-diagnosis every 2 weeks to make the occlusal pad, and the conventional double-diagnosis interval is 8-12 weeks, so that the manufacturing and wearing of the occlusal pad can greatly shorten the double-diagnosis interval, which causes inconvenience to the patient, and the obvious advantage of bracket-free invisible orthodontic that the number of the double-diagnosis is reduced can not be reflected. In addition, the conventional process for clinically manufacturing the occlusal pad is to add a stirred self-setting denture base material to the occlusal surface of each pair of invisible orthodontic appliances needing to manufacture the occlusal pad, trim and form the mixture, wait for the mixture to solidify, and then wear each pair of invisible orthodontic appliances with the occlusal pad into the mouth of a patient for conditioning and grinding. Therefore, when each invisible appliance is used for manufacturing the occlusal pad, repeated try-on and repeated grinding are needed, the manufacturing process of the occlusal pad is complicated, the operation time beside the chair is greatly prolonged, and discomfort is increased for patients.
Disclosure of Invention
The present invention is directed to a method for making a bite block that solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a method for manufacturing an occlusal pad comprises an impression tray, a silicon rubber impression, an occlusal pad and an invisible appliance which are required by the manufacturing method, and comprises the following specific steps:
the method comprises the following steps: grinding the occlusal surface of the back dental area of the bracket-free invisible appliance, taking the lower jaw part of a plurality of pairs of invisible appliances needing to be made into occlusal pads and opened for occlusion, and grinding the occlusal surface of the back dental area of the lower jaw invisible appliance roughly by using a low-speed grinding machine;
step two: mixing and stirring self-setting denture base materials;
step three: the tooth combination cushion is manufactured in the following way
S1: taking a first pair of invisible orthodontic appliances needing to be manufactured with occlusal pads to be opened and occluded, lining the stirred self-setting denture base material on the roughened occlusal surfaces of the invisible orthodontic appliances, and finishing and molding;
s2: when the self-setting denture base material is completely set, the invisible orthodontic appliance is worn back into the mouth of a patient, the upper jaw invisible orthodontic appliance is also worn together, the degree of occlusion opening is observed, if the upper teeth and the lower teeth are not separated, the thickness of the self-setting material lining the occlusal surface of the invisible orthodontic appliance is insufficient, namely the height of the occlusal pad is insufficient, and the self-setting material is required to be stirred again according to the steps and added to the occlusal surface of the invisible orthodontic appliance;
s3: when the invisible appliance is worn, the upper jaw teeth and the lower jaw teeth are separated, and the invisible appliance is successfully manufactured;
step four: taking a silicone rubber impression, putting the lower jaw invisible appliance with the occlusal pad and the untreated upper jaw invisible appliance into a patient mouth, observing the contact between the invisible appliance and the tooth surface, separating the upper jaw teeth and the lower jaw teeth by a proper distance, taking an impression tray with a proper size, and preparing the lower jaw silicone rubber impression by using a silicone rubber impression technology, so that the height and the shape of the occlusal pad of the first pair of invisible appliances with the occlusal pad are recorded by the silicone rubber impression;
step five: the method comprises the following steps of preparing the occlusal pad of a plurality of pairs of subsequent invisible orthodontic appliances, sequentially taking the invisible orthodontic appliances needing to prepare the occlusal pad, polishing the occlusal surface of the invisible orthodontic appliances to be rough by a low-speed polishing machine, mixing a proper amount of self-setting denture base material, lining the occlusal surface of the invisible orthodontic appliances, roughly finishing and forming, putting the invisible orthodontic appliances into an obtained silicone rubber impression, extruding and removing the excessive self-setting denture base material before the material is not solidified, finishing the preparation of the occlusal pad of the pair of invisible orthodontic appliances after the residual material is completely solidified, taking out the invisible orthodontic appliances with the occlusal pad, and preparing the occlusal pad on the plurality of pairs of invisible orthodontic appliances by utilizing the silicone rubber impression according to the steps.
As a preferred technical scheme in the invention, the second step specifically comprises the steps of taking a proper amount of self-setting denture base powder into a rubber cup, and then taking a proper amount of denture base water, wherein the powder-liquid ratio is 1.0 g: 0.5ml, and stirring until the sticky stage.
As a preferred technical solution in the present invention, in S2, the specific parameter for observing the occlusion opening degree is that the distance separating the upper and lower teeth should be controlled within 2mm, and if the distance exceeds 2mm, a low speed grinder is used to grind off the excessive self-hardening material on the appliance for a few times until the upper and lower teeth are separated and the separation distance is within 2mm, and simultaneously, the uniform contact of the bilateral posterior teeth is ensured.
As a preferred technical scheme in the invention, in the fifth step, the height of the occlusal pad of the subsequent multiple pairs of invisible appliances is consistent with that of the first pair of invisible appliances with the occlusal pad, so that the occlusal pad does not need to be milled, and the degree of open occlusion meets the clinical requirements of orthodontics.
As a preferable technical scheme in the invention, the longitudinal section of the impression tray is of a Y-shaped structure, and the inner surface of the impression tray is attached to the bottom end surface of the silicon rubber impression.
In a preferred embodiment of the present invention, the occlusal pad and the invisible appliance are combined to form an invisible appliance having a self-setting denture base material.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the method of directly manufacturing the occlusal pad on the invisible appliance by using the self-setting denture base material and simultaneously adopts the silicon rubber impression technology, so that the occlusal pad can be simply, conveniently and quickly manufactured on a plurality of pairs of appliances during the re-diagnosis of the patient without repeated try-on and adjustment, thereby saving the operation time beside the chair, more importantly, prolonging the re-diagnosis interval of the patient and providing great convenience for the patient.
Drawings
FIG. 1 is a schematic view of the invisible appliance with self-setting denture base material and a silicone rubber impression in the processing state of the invention;
FIG. 2 is a schematic diagram of the composition of the invisible appliance of the present invention with a self-setting denture base material;
FIG. 3 is a schematic view showing a state after completion of the silicone rubber stamp according to the present invention.
In the figure: 1. a impression tray; 2. a silicone rubber stamp; 3. an invisible appliance having a self-setting denture base material; 31. a bite block; 32. provided is a hidden appliance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: a method for manufacturing an occlusal pad comprises an impression tray 1, a silicon rubber impression 2, an occlusal pad 31 and an invisible appliance 32 which are required by the manufacturing method, and comprises the following specific steps:
the method comprises the following steps: grinding the occlusal surface of the back dental area of the bracket-free invisible appliance 32, taking the lower jaw parts of a plurality of pairs of invisible appliances needing to be made into occlusal pads and opened for occlusion, and grinding the occlusal surface of the back dental area of the lower jaw invisible appliance roughly by using a low-speed grinder;
step two: mixing and stirring self-setting denture base materials;
step three: the bite block 31 is manufactured as follows
S1: taking a first pair of invisible orthodontic devices 32 which need to be manufactured with occlusal pads to be opened and occluded, lining the stirred self-setting denture base material on the roughened occlusal surfaces of the invisible orthodontic devices 32, and finishing and forming;
s2: when the self-setting denture base material is completely set, the invisible orthodontic appliance 32 is worn back into the mouth of a patient, the upper jaw invisible orthodontic appliance is also worn together, the degree of occlusion opening is observed, if the upper and lower teeth are not separated, the thickness of the self-setting material lining the occlusal surface of the invisible orthodontic appliance 32 is insufficient, namely the height of the occlusal pad 31 is insufficient, the self-setting material needs to be stirred again according to the steps and added to the occlusal surface of the invisible orthodontic appliance 32;
s3: when the invisible appliance 32 is worn, the upper and lower teeth are separated, and the manufacture is successful;
step four: taking a silicon rubber impression 2, putting the lower jaw invisible appliance 32 attached with the occlusal pad 31 and an untreated upper jaw invisible appliance into a patient mouth, observing the fit between the upper jaw invisible appliance and the lower jaw invisible appliance and the tooth surfaces, separating the upper jaw teeth and the lower jaw teeth by a proper distance, taking an impression tray 1 with a proper size, preparing the lower jaw silicon rubber impression 2 by using a silicon rubber impression technology, and preparing the occlusal pad 31 by directly using a self-setting denture base material on the invisible appliance 32, and simultaneously adopting the silicon rubber impression 2 technology, so that the occlusal pad 31 can be simply, conveniently and quickly prepared on multiple pairs of appliances during the re-diagnosis of the patient without repeated try-wearing and adjustment and grinding, thereby saving the operation time beside a chair, more importantly, prolonging the re-diagnosis interval of the patient and providing great convenience for the patient;
step five: the method comprises the following steps of manufacturing the occlusal pad 31 of a plurality of pairs of invisible orthodontic devices, sequentially taking the invisible orthodontic devices 32 needing to manufacture the occlusal surface of the invisible orthodontic device 31, grinding the occlusal surface of the invisible orthodontic device 32 to be rough by a low-speed grinder, mixing a proper amount of self-setting denture base material, lining the occlusal surface of the invisible orthodontic device 32, roughly finishing and forming, putting the invisible orthodontic device 32 into the obtained silicon rubber impression 2, extruding the redundant self-setting denture base material before the material is not solidified, removing the redundant self-setting denture base material, finishing the manufacture of the occlusal pad 31 of the pair of invisible orthodontic devices 32 after the residual material is completely solidified, taking out the invisible orthodontic device 32 with the occlusal pad 31, and manufacturing the occlusal pad 31 on the plurality of pairs of invisible orthodontic devices 32 by using the silicon rubber impression 2 according to the steps.
In this embodiment, the specific steps in the second step are to put a proper amount of self-setting denture base powder into a rubber cup, and then to put a proper amount of denture base water into the rubber cup, wherein the powder-liquid ratio is 1.0 g: 0.5ml, and is mixed to the silk sticking stage, thereby facilitating the later molding.
In this embodiment, in S2, the specific parameter for observing the occlusion opening degree is that the distance separating the upper and lower teeth should be controlled within 2mm, if the distance exceeds 2mm, a low-speed grinder needs to grind off a small amount of self-hardening material on the appliance for multiple times until the upper and lower teeth are separated and the separation distance is within 2mm, and after the adjustment is completed, the next step is performed while ensuring that the two lateral posterior teeth are in uniform contact.
In the fifth embodiment, in the step v, the height of the occlusal pad 31 of the subsequent multiple pairs of invisible appliances 32 is the same as the height of the occlusal pad 31 of the first pair of invisible appliances with the occlusal pad 31, the height of the occlusal pad of the subsequent multiple pairs of invisible appliances does not need to be adjusted and ground, and the degree of open occlusion meets the clinical orthodontic requirements.
In this embodiment, the longitudinal section of impression tray 1 is "Y" type structure, and the laminating of the bottom end face of the internal surface of impression tray 1 and silicon rubber impression 2, when preparing silicon rubber impression 2, put into impression tray 1 with silicon rubber impression 2 material, silicon rubber impression 2 material can be moulding, put into the oral cavity along with impression tray 1 together, treat that silicon rubber impression 2 material solidifies the back, take out together with impression tray 1, alright take first subband tooth to close 31 height and the form of 32 of the stealthy ware of correcting of pad 31 and record down, silicon rubber impression 2 makes the completion.
In this embodiment, the bite block 31 and the invisible appliance 32 are combined to form the invisible appliance 3 having the self-setting denture base material.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method of making a bite block, comprising: the preparation method comprises the steps of preparing the impression tray (1), the silicon rubber impression (2), the occlusal pad (31) and the invisible appliance (32), wherein the steps are as follows:
the method comprises the following steps: grinding the occlusal surface of the back dental area of the bracket-free invisible appliance (32), taking the lower jaw parts of a plurality of pairs of invisible appliances needing to be made with occlusal pads and opened for occlusion, and grinding the occlusal surface of the back dental area of the lower jaw invisible appliance roughly by using a low-speed grinding machine;
step two: mixing and stirring self-setting denture base materials;
step three: the bite block (31) is manufactured in the following way
S1: taking a first pair of invisible orthodontic appliances (32) which need to be manufactured with occlusal pads to open occlusion, lining the mixed self-setting denture base material on the roughened occlusal surfaces of the invisible orthodontic appliances (32), and finishing and molding;
s2: when the self-setting denture base material is completely set, the invisible orthodontic appliance (32) is worn back into the mouth of a patient, the upper jaw invisible orthodontic appliance is also worn together, the degree of occlusion opening is observed, if the upper teeth and the lower teeth are not separated, the thickness of the self-setting material lining the occlusal surface of the invisible orthodontic appliance (32) is insufficient, namely the height of the occlusal pad (31) is insufficient, and the self-setting material is required to be stirred again according to the steps and added to the occlusal surface of the invisible orthodontic appliance (32);
s3: when the invisible appliance (32) is worn in and the upper and lower jaw teeth are separated, the manufacture is successful;
step four: taking a silicon rubber stamp (2), and preparing the method as follows: putting the lower jaw invisible appliance (32) with the occlusal pad (31) and the untreated upper jaw invisible appliance into a patient mouth, observing the upper jaw invisible appliance and the lower jaw invisible appliance to be attached to the tooth surface, separating the upper jaw teeth and the lower jaw teeth by a proper distance, taking an impression tray (1) with a proper size, and preparing a lower jaw silicone rubber impression (2) by using a silicone rubber impression technology, so that the occlusal pad height and the shape of the invisible appliance (32) with the occlusal pad (31) of the first pair are recorded by the silicone rubber impression;
step five: the subsequent preparation of the occlusal pad (31) of the multiple invisible orthodontic devices adopts the following preparation method: taking the invisible orthodontic device (32) needing to make the occlusal pad (31), polishing the occlusal surface of the invisible orthodontic device (32) to be rough by a low-speed polishing machine, mixing a proper amount of self-setting denture base material, lining the occlusal surface of the invisible orthodontic device (32), roughly finishing and forming, putting the invisible orthodontic device (32) into the obtained silicone rubber impression (2), extruding and removing the redundant self-setting denture base material before the material is not solidified, finishing the making of the occlusal pad (31) of the auxiliary invisible orthodontic device (32) after the residual material is completely solidified, taking out the invisible orthodontic device (32) with the occlusal pad (31), and making the occlusal pad (31) on the plurality of pairs of invisible orthodontic devices (32) by using the silicone rubber impression (2) according to the steps.
2. A method of making a bite block according to claim 1, wherein: and the concrete steps in the second step are that a proper amount of self-setting denture base powder is taken to be put into a rubber cup, a proper amount of denture base water is taken, and the powder-liquid ratio is 1.0 g: 0.5ml, and stirring until the sticky stage.
3. A method of making a bite block according to claim 1, wherein: in S2, the specific parameter for observing the bite opening degree is that the distance separating the upper and lower teeth should be controlled within 2mm, and if the distance exceeds 2mm, a low-speed grinder is needed to grind off the excessive self-setting material on the appliance for a few times until the upper and lower teeth are separated and the separation distance is within 2mm, and simultaneously, the uniform contact of the posterior teeth on both sides is ensured.
4. A method of making a bite block according to claim 1, wherein: in the fifth step, the height of the occlusal pad (31) of the subsequent multiple pairs of invisible appliances (32) is consistent with the height of the occlusal pad (31) of the first pair of invisible appliances (32) with the occlusal pad (31), so that the occlusal pad (31) does not need to be grinded, and the degree of open occlusion meets the orthodontic clinical requirement.
5. A method of making a bite block according to claim 1, wherein: the longitudinal section of the impression tray (1) is of a Y-shaped structure, and the inner surface of the impression tray (1) is attached to the bottom end face of the silicon rubber impression (2).
6. The method of making a bite block of claim 4, wherein: the occlusal pad (31) and the invisible appliance (32) are combined to form the invisible appliance (3) with the self-setting denture base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111367425.2A CN113995534A (en) | 2021-11-18 | 2021-11-18 | Method for manufacturing occlusal pad |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111367425.2A CN113995534A (en) | 2021-11-18 | 2021-11-18 | Method for manufacturing occlusal pad |
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| CN113995534A true CN113995534A (en) | 2022-02-01 |
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| CN202111367425.2A Pending CN113995534A (en) | 2021-11-18 | 2021-11-18 | Method for manufacturing occlusal pad |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114886586A (en) * | 2022-06-01 | 2022-08-12 | 西安交通大学口腔医院 | Manufacturing method of occlusal pad of invisible appliance |
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| CN211723482U (en) * | 2019-12-31 | 2020-10-23 | 北京大学口腔医学院 | Growth improvement type condylar malformation postoperative interlock is rebuild and is rescued ware |
| CN212679293U (en) * | 2020-04-16 | 2021-03-12 | 刘红 | Invisible position-adjustable appliance |
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2021
- 2021-11-18 CN CN202111367425.2A patent/CN113995534A/en active Pending
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| CN103037943A (en) * | 2010-06-01 | 2013-04-10 | 百特技术有限公司 | Dental appliance |
| WO2013191127A1 (en) * | 2012-06-22 | 2013-12-27 | 株式会社ジーシー | Full denture base manufacturing method |
| CN104379082A (en) * | 2012-06-22 | 2015-02-25 | 株式会社Gc | Impression tray set for edentulous jaw |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114886586A (en) * | 2022-06-01 | 2022-08-12 | 西安交通大学口腔医院 | Manufacturing method of occlusal pad of invisible appliance |
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