CN111839772A - Jaw relation recording auxiliary device and jaw relation recording method - Google Patents
Jaw relation recording auxiliary device and jaw relation recording method Download PDFInfo
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- CN111839772A CN111839772A CN202010716505.3A CN202010716505A CN111839772A CN 111839772 A CN111839772 A CN 111839772A CN 202010716505 A CN202010716505 A CN 202010716505A CN 111839772 A CN111839772 A CN 111839772A
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- 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
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C11/00—Dental articulators, i.e. for simulating movement of the temporo-mandibular joints; Articulation forms or mouldings
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- Oral & Maxillofacial Surgery (AREA)
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- Optics & Photonics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses an auxiliary device for recording jaw position relation and a jaw position relation recording method. This jaw position relation records auxiliary device includes: the first bending part is used for abutting against the upper alveolar ridge; the second bending part is used for abutting against the lower alveolar ridge; the connecting part is connected with the first bending part and the second bending part; the opening direction of the first bending part is far away from the second bending part, and the opening direction of the second bending part is far away from the first bending part. After the first bending part and the second bending part of the device are placed in the mouth of a dentition missing patient and abut against the corresponding upper alveolar ridge and the lower alveolar ridge to form the occlusion of the middle relation position, the connecting part becomes a bridge for connecting the upper jaw and the lower jaw, the upper jaw and the lower jaw data images with the determined correct jaw relation can be formed, and the complete denture repair can be effectively assisted through the information reflected by the data images. The device is only needed to be placed into the mouth in the whole using process, and the operation is simple and convenient.
Description
Technical Field
The invention relates to the technical field of oral medical instruments, in particular to a jaw position relation recording auxiliary device and a jaw position relation recording method.
Background
In recent years, the development of digital intraoral scanning technology has gradually become an effective auxiliary method in complete denture repair. In the complete denture repairing process, the recording of the jaw position relation is an important ring, and if the jaw position relation is wrong, the stability, the retention and the chewing efficiency of the complete denture during the operation are influenced, so that the repairing effect is influenced. However, the principle of digital intraoral scanning is to stitch and synthesize images by a plurality of pictures, and because the patient without the dental jaw has the problems of tooth loss, alveolar ridge absorption, gap between the upper jaw and the lower jaw, lack of connection of occlusion alignment and the like, obtaining jaw position relation by intraorally scanning buccal side images and registering data becomes a big problem. Current clinical practice uses methods including marking the wax levee, scanning using conventional intraoral wax levee placement for occlusion, or other similar methods. However, the devices used in these methods need to be manually held and operated in the scanning process.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a jaw position relation recording auxiliary device and a jaw position relation recording method which are simple and convenient to operate.
In a first aspect, an embodiment of the present invention provides a jaw relation recording assistance device, including:
the first bending part is used for abutting against the upper alveolar ridge;
the second bending part is used for abutting against the lower alveolar ridge;
the connecting part is connected with the first bending part and the second bending part;
the opening direction of the first bending part is far away from the second bending part, and the opening direction of the second bending part is far away from the first bending part.
The jaw position relation recording auxiliary device provided by the embodiment of the invention at least has the following beneficial effects:
the first bending part and the second bending part of the device are placed in the mouth of a dentition missing patient and are abutted against the corresponding upper alveolar ridge and the lower alveolar ridge to form a correct jaw relation, and then the connecting part becomes a bridge for connecting the upper jaw and the lower jaw. When intraoral scanning is carried out under such conditions, the upper jaw data image and the lower jaw data image which are formed separately by a patient with dentition loss can form an upper jaw data image and a lower jaw data image with determined correct jaw position relation by scanning the device, and information reflected by the data images can effectively assist complete denture repair. The device is only needed to be placed into the mouth in the whole using process, and the operation is simple and convenient.
According to the jaw position relation recording auxiliary device of some embodiments of the present invention, the first bending part and the second bending part are fixedly connected by the connecting part. When the jaw position measuring device is placed in the mouth for occlusion, the mode of fixedly connecting all parts can ensure that the device integrally provides better stability and ensures that the jaw position relation is more accurately determined.
According to the jaw relation recording auxiliary device of some embodiments of the present invention, the first bending part, the second bending part and the connecting part are of an integrated structure. The integrated structure can ensure that the auxiliary device is more convenient and faster to take.
According to the jaw relation recording assistance device of some embodiments of the present invention, at least one of the first bending surface of the first bending portion and the second bending surface of the second bending portion is a curved surface. The bending surfaces of the first bending part and the second bending part are cambered surfaces, so that the bending surfaces can be better supported by the upper jaw and the lower jaw, and the comfort level of a patient is improved.
According to the jaw position relation recording auxiliary device of some embodiments of the invention, the length of the first bending part and the second bending part is 10-25 mm. The length of 10 ~ 25mm roughly corresponds to the width of adult's anterior dental crown to this length is designed and can be made the marginal area of the homonymy of first kink and second kink support with the adjacent alveolar ridge counterbalance of anterior alveolar socket just, improves the stability of placing, makes putting into of auxiliary device and jaw position relation's determination more convenient.
According to the jaw position relation recording auxiliary device of some embodiments of the invention, the width of the first bending part and the second bending part is 8-10 mm. 8 ~ 10 mm's width roughly corresponds to the width of adult's alveolar ridge to this width is designed and can be made the both sides of first kink and second kink support with the front and back end of alveolar ridge just and be held, improves the stability of placing, makes putting into of auxiliary device and jaw position relation's determination more convenient.
According to the jaw position relation recording auxiliary device of some embodiments of the invention, the depth of the first bending part and the second bending part is 4-8 mm. 4 ~ 8mm highly roughly corresponds to the height of adult's alveolar ridge to this height designs and can make the edge and the bottom of first kink and second kink hold whole alveolar ridge just, supports to hold the effect better, and the comfort level is better.
According to the jaw position relation recording auxiliary device of some embodiments of the invention, the height of the connecting part is 15-45 mm. The height of 15-45 mm approximately corresponds to the distance between the upper alveolar bone and the lower alveolar bone in most jaw position relations, and different heights are set in the range according to specific conditions and are subjected to fine adjustment to adapt to recording of different jaw position relations.
According to the jaw position relation recording auxiliary device of some embodiments of the present invention, the first bending part, the second bending part and the connecting part are made of plastic. The strength and low cost of the auxiliary device can be ensured by taking plastic as the raw material of the main component.
In a second aspect, an embodiment of the present invention provides a jaw relation recording method, including the steps of:
placing the jaw relation recording auxiliary device in the mouth of a patient, and enabling the jaw relation recording auxiliary device to be abutted against an alveolar ridge;
and acquiring an image of the dental jaw and jaw position relation recording auxiliary device.
The jaw position relation recording method of the embodiment of the invention at least has the following beneficial effects:
the jaw relation recording auxiliary device can be stably abutted against the upper jaw and the lower jaw of a patient in a high degree, and after the correct vertical distance is determined, the jaw relation recording is used for acquiring images, and the corresponding images of the jaw relation recording auxiliary device can be formed between the upper jaw image and the lower jaw image, so that the accurate jaw relation is determined according to the images.
According to some embodiments of the invention, after the jaw relation recording auxiliary device is abutted against the alveolar ridge, a certain amount of impression material may be input into the gap between the first bending portion and the alveolar ridge, and the impression material may be fixed on the alveolar ridge. Through the input of these impression materials, can make jaw position relation record auxiliary device more stable, difficult aversion with the position relation of holding of alveolar ridge on the one hand, make things convenient for the acquisition of follow-up image, on the other hand also can provide more comfortable interlock experience for the patient.
According to the jaw relation recording method of some embodiments of the present invention, the input method may be any method capable of inserting the impression material into the gap, including, but not limited to, injection, lining, etc.
According to some embodiments of the invention, the impression material may be silicone rubber, red cream (or red and white proofing cream, mainly composed of terpene resin, stearic acid, talcum powder, lithopone, etc.), alginate, etc.
Drawings
Fig. 1 is a schematic structural diagram of a jaw relation recording auxiliary device according to an embodiment of the present invention.
Fig. 2 is a partial perspective view of an alveolar bone of the upper jaw of a dentition-deficient patient.
Fig. 3 is a schematic view of a first bending part of the jaw relation recording auxiliary device according to an embodiment of the present invention.
Figure 4 is a side view of a jaw relation registration aid of one embodiment of the present invention positioned within a patient's mouth.
Fig. 5 is a schematic structural diagram of a jaw relation recording auxiliary device according to another embodiment of the present invention.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it may be directly disposed, fixed, or connected to the other feature or may be indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Referring to fig. 1, a structure of a jaw relation recording aid of an embodiment of the present invention is shown. The jaw relation recording auxiliary device includes a first bending part 110, a connecting part 120 and a second bending part 130. The opening direction of the first bending portion 110 is upward, and the opening direction is away from the position of the second bending portion 130 corresponding to the first bending portion 110. The opening direction of the second bending portion 130 is downward, and the opening direction is away from the position of the first bending portion 110 corresponding to the second bending portion 130. The first bending portion 110 has a first bending surface 111, and the second bending portion 130 has a second bending surface 131. The first bending surface 111 and the second bending surface 131 are both arc surfaces. The first bending part 110, the connecting part 120 and the second bending part 130 are an integrated structure.
Referring to fig. 2, a partial perspective view of an alveolar bone of the upper jaw of a dentition deficient patient is shown. After the dentition of a patient with a missing dentition falls, the socket housing the root of the tooth emerges and then grows progressively flat. The alveolar ridge 201 is a free marginal prominence of an alveolar bone surrounding an alveolar socket, and after the alveolar ridge 201 is formed flat, the alveolar ridge is mainly in a smooth hill-like structure. The alveolar ridge spacing 211 of adjacent alveolar ridges 201 is approximately equal to the crown width of an exfoliated (or non-exfoliated) tooth, the alveolar ridge width 212 of an alveolar ridge 201 is the anteroposterior distance of the alveolar ridge 201 perpendicular to the plane of the dentition at that location, and the alveolar ridge height 213 of an alveolar ridge 201 is the protrusion height of the free edge protrusion.
Referring to fig. 3, a schematic diagram of a first bending part of the jaw position relation recording auxiliary device is shown. The first bent portion 110 includes a first side portion 301 and a second side portion 302, the first side portion 301 and the second side portion 302 of the integral structure are symmetrical to each other, the bottom portions of the first side portion 301 and the second side portion 302 are connected, an opening is formed between the top portions, and the distance between the first side portion 301 and the second side portion 302 along the z-axis direction is gradually increased along the x-axis direction shown in the figure. The length L of the first bent portion 110 refers to the length of the first side portion 301 or the second side portion 302 on the illustrated y-axis. The width W of the first bent portion 110 refers to the maximum distance between the first side portion 301 and the second side portion 302 along the illustrated z-axis direction. The depth H of the first bent portion 110 is the maximum height of the first bent portion 110 along the x-axis direction shown in the figure.
Referring to fig. 4, a side view of the jaw relation registration aid in placement within a patient's mouth is shown. Referring to fig. 2 and 3, after the jaw relation recording auxiliary device is placed in the mouth of the patient, the first bending part 110 abuts against the alveolar ridge 201 of the upper jaw, and in order to maintain the stability of the abutment and the comfort of the patient, the length L of the first bending part 110 is close to the alveolar ridge interval 211 of the alveolar ridge 201 of the patient, so that when the jaw relation recording auxiliary device abuts against the upper jaw and the lower jaw of the patient, two ends of the first bending part 110 along the y-axis direction respectively contact with the adjacent alveolar ridge 201 to abut against the same; the width W of the first bending part 110 is close to the alveolar ridge width 212 of the alveolar ridge 201 of the patient, so that when the jaw relation recording auxiliary device abuts against the upper jaw and the lower jaw of the patient, the first side part 301 and the second side part 302 of the first bending part 110 can cover the front end and the rear end of the alveolar ridge 201 to abut against the front end and the rear end; the depth H of the first bending part 110 is close to the alveolar ridge height 213 of the alveolar ridge 201 of the patient, so that when the jaw relation recording auxiliary device abuts against the upper jaw and the lower jaw of the patient, the edges and the bottoms of the first side part 301 and the second side part 302 of the first bending part 110 can completely cover and accommodate the whole protruding part of the alveolar ridge 201. The second bending part 130 connected to the first bending part 110 through the connecting part 120 is the same as the first bending part 110. Therefore, the stability of fixing the jaw relation recording auxiliary device between alveolar ridges can be effectively improved, the jaw relation recording auxiliary device can not be easily separated from the central relation position to shift after the vertical distance is determined, and the jaw relation recording auxiliary device is favorable for scanning in the mouth to form an image. Simultaneously, because the setting of cambered surface, this jaw position relation record auxiliary device can laminate the alveolar ridge better when supporting, and the comfort level of use is also better.
In order to achieve the above-mentioned high-efficiency resisting effect as much as possible, the alveolar ridge pitch 211 of the alveolar ridge 201 is generally within 10-25 mm, and the length L of the first bending part 110 is also set within 10-25 mm; the width 212 of the alveolar ridge 201 is generally within 8-10 mm, and the width W of the first bending part 110 is also set within 8-10 mm; the alveolar ridge height 213 of the alveolar ridge 201 generally ranges from 4 to 8mm, and the depth H of the first bending part 110 is set to be within 4 to 8 mm.
According to different requirements, the parameters of the first bending part and the second bending part can be the same or different, so that the alveolar ridge form of different types of patients can be adapted.
In addition, clinical data show that when the upper and lower jaws of a human form a correct jaw position relationship, the vertical distance between the upper and lower jaws is generally between 15 and 45 mm. Therefore, the height of the connecting portion 120 is also set within 15 to 45 mm. Meanwhile, the height range is relatively large, so that the vertical distance requirement when the middle relation positions of different crowds are occluded can be better met, and the height of the connecting part can be set to be in a gradient of 20mm, 30mm and 40 mm.
The jaw relation recording aid may be made of plastic with certain strength and toughness or other materials with better biting property, such as the first bending part 110, the connecting part 120 and the second bending part 130.
The specific method for recording the jaw relation by using the jaw relation recording auxiliary device is as follows:
(1) the jaw relation recording auxiliary device is placed in the mouth of a patient, the first bending part and the second bending part are respectively contacted with alveolar ridges of upper and lower jaws of the patient, the first bending part is abutted against the alveolar ridges of the upper jaw, the second bending part is abutted against the alveolar ridges of the lower jaw, and the centering relation occlusion of the patient is guided, so that the vertical distance between the upper jaw and the lower jaw is determined.
(2) And carrying out digital intraoral scanning to generate a three-dimensional image of the upper jaw and the lower jaw and a jaw relation recording auxiliary device which is propped against alveolar ridges of the upper jaw and the lower jaw, and determining the jaw relation according to the image.
In the method, the jaw relation recording auxiliary device is equivalent to a bridge for connecting an upper jaw model and a lower jaw model in the intraoral scanning process, and an upper jaw model image and a lower jaw model image which are originally and separately segmented are combined together in a three-dimensional space by the auxiliary device to form an image of the relative relation of the upper jaw and the lower jaw so as to determine the jaw relation. Meanwhile, the bending part is stably supported to provide necessary assistance for intraoral scanning, and the accuracy of a reconstruction result is greatly improved.
In step (1), for ease of placement, the alveolar ridge of the anterior portion may be selected for abutment.
The jaw position relation recording method further comprises the following steps:
when the first bending part and the second bending part are contacted with the alveolar ridge to be propped, impression materials are injected or lined into the gap between the bending part and the alveolar ridge, and the specific impression materials can be one or more of silicon rubber, red paste, alginate and the like. Through the input of impression materials, the bending part and the alveolar ridge can be more tightly abutted, the fixation between the bending part and the alveolar ridge is more stable, and the accurate recording of the vertical distance and the jaw relation is influenced by more difficult displacement in the occlusion and subsequent scanning processes.
In addition, in order to make the occlusion relation more stable during the recording process, two or more jaw relation recording auxiliary devices can be selected to be simultaneously held.
Referring to fig. 5, a schematic view of a jaw relation recording auxiliary device according to another embodiment of the present invention is shown, the jaw relation recording auxiliary device includes a first bending portion 510, a second bending portion 530 and a connecting portion 520 connecting the first bending portion 510 and the second bending portion 530, wherein a first bending surface 511 of the first bending portion 510 and a second bending surface 531 of the second bending portion 530 are formed by intersecting two planes at an angle, and the intersecting openings are opposite. When the model is used, impression materials can be injected into the bending part and the alveolar ridge butting part to ensure that the bending part and the alveolar ridge butting part can be better fixed together to serve as a bridge for connecting the upper jaw model and the lower jaw model, so that the jaw position relation is determined.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Jaw position relation record auxiliary device, its characterized in that includes:
a first bend for abutting against an upper alveolar ridge;
a second bend for abutting against a lower alveolar ridge;
a connection part connecting the first bending part and the second bending part;
the opening direction of the first bending part is far away from the second bending part, and the opening direction of the second bending part is far away from the first bending part.
2. The jaw position relation recording auxiliary device according to claim 1, wherein the first bending portion and the second bending portion are fixedly connected by the connecting portion.
3. The jaw position relation recording auxiliary device according to claim 2, wherein the first bending portion, the second bending portion and the connecting portion are an integrated structure.
4. The jaw position relation recording auxiliary device according to claim 1, wherein at least one of the first bending surface of the first bending portion and the second bending surface of the second bending portion is an arc surface.
5. The jaw position relation recording aid according to any one of claims 1 to 4, wherein the first bent portion and the second bent portion have a length of 10 to 25 mm.
6. The jaw position relation recording aid according to any one of claims 1 to 4, wherein the width of the first bent portion and the second bent portion is 8 to 10 mm.
7. The jaw position relation recording aid according to any one of claims 1 to 4, wherein the first bent portion and the second bent portion have a depth of 4 to 8 mm.
8. The jaw position relation recording auxiliary device according to any one of claims 1 to 4, wherein the height of the connecting part is 15 to 45 mm.
9. The jaw position relation recording aid according to any one of claims 1 to 4, wherein the first bent portion, the second bent portion and the connecting portion are made of plastic.
10. The jaw position relation recording method is characterized by comprising the following steps:
placing the jaw relation recording aid of any one of claims 1 to 9 in the mouth of a patient such that the jaw relation recording aid abuts against the alveolar ridge;
and acquiring images of the dental jaw and the jaw position relation recording auxiliary device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010716505.3A CN111839772A (en) | 2020-07-23 | 2020-07-23 | Jaw relation recording auxiliary device and jaw relation recording method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010716505.3A CN111839772A (en) | 2020-07-23 | 2020-07-23 | Jaw relation recording auxiliary device and jaw relation recording method |
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| Publication Number | Publication Date |
|---|---|
| CN111839772A true CN111839772A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010716505.3A Pending CN111839772A (en) | 2020-07-23 | 2020-07-23 | Jaw relation recording auxiliary device and jaw relation recording method |
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| Country | Link |
|---|---|
| CN (1) | CN111839772A (en) |
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2020
- 2020-07-23 CN CN202010716505.3A patent/CN111839772A/en active Pending
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