WO2018147157A1

WO2018147157A1 - Taking tool

Info

Publication number: WO2018147157A1
Application number: PCT/JP2018/003363
Authority: WO
Inventors: 栄二山口
Original assignee: 栄二山口
Priority date: 2017-02-09
Filing date: 2018-02-01
Publication date: 2018-08-16
Also published as: JP6174829B1; JP2018126378A

Abstract

Provided is a taking tool equipped with: a taking part which has the length of dentition requiring occlusion and is made of a hard material, and which has, on one side thereof, an upper taking surface for taking an occlusal position, and, on the other side thereof, a lower taking surface for taking an occlusal position or an impression; and an occlusion paper holder grip part. By means of this taking tool, it is possible to provide an occlusion taking tool capable of accurately taking an occlusion regardless of the skill of an operator.

Description

Harvesting equipment

The present invention relates to an occlusal acquisition and impression acquisition instrument used for dental treatment.

Dental treatment is usually performed by the dentist, such as diagnosis, treatment plan creation, abutment formation, impression taking, occlusion taking, wearing, adjustment, etc. Under the direction of a doctor, work performed at a dental technician by a dental technician who creates a prosthesis such as a crown, bridge, and denture that covers the teeth, and a splint for treatment to guide the jaw position to an appropriate position Is done in cooperation.

For the treatment of missing teeth, an impression material is taken by a dentist and a working model is made based on this impression, and then wax is used to determine the correct meshing position. Occlusal acquisition is performed. Occlusal acquisition refers to taking an occlusal mold in order to determine the occlusal plane and the occlusal height when producing a prosthesis in dental treatment. Anatomically, occlusal acquisition refers to obtaining the position of the lower jaw with respect to the fixed upper jaw, that is, obtaining the position of the lower jaw relative to the upper jaw in the central occlusal position.

Occlusal acquisition can be achieved by adjusting the jaw position by determining the three-dimensional positional relationship between the upper and lower jaws, obtaining a stable mastication in which the central position matches the central occlusal position, and restoring the masticatory function. Is the purpose. It is also an important process not only for the recovery of the masticatory function but also for the aesthetic purpose of repairing facial deformation associated with tooth loss. Furthermore, in splint therapy in the treatment of temporomandibular disorders, it is an important process to obtain occlusion and confirm the state of occlusal contact. Accordingly, it is necessary that the occlusion is accurately obtained at the dental clinic, the occlusion situation of the patient is accurately transmitted to the dental technician, and the prosthesis is produced.

In dental clinics, an occlusal acquisition method using an occlusal floor using paraffin wax is generally performed. For example, in the case of a complete denture treatment, occlusal acquisition is performed as follows. After adjusting the occlusal floor to suit the patient, determine the occlusal height. Adjust so that the distance between the upper and lower sides at the resting occlusal position matches the state in which the occlusal floor is suitable for the oral cavity. Next, after the occlusal floor is taken out and the occlusal plane is softened and returned to the oral cavity, the patient is occluded at the central occlusal position to obtain the occlusion. When a partial prosthesis such as a crown is manufactured, a softened wax is chewed by the patient at the occlusal fitting position, and the patient is taken out of the oral cavity after waiting for hardening.

However, for occlusal acquisition, for example, in the case of denture production, the difficulty level of occlusion acquisition differs greatly between partial tooth loss and complete denture production. In the case of partial tooth loss, since natural teeth remain, the interrelationship depending on the position of the remaining natural teeth is complex, and the degree of difficulty greatly depends on each case. Moreover, when performing occlusal acquisition of a complete denture, since the state at the time of toothed jaws, such as an occlusal high diameter, is unknown, the setting will become difficult. Therefore, the current situation is that dentists are performing occlusal acquisition according to the method they consider to be optimal. In addition, after the occlusal acquisition, the current situation is that the prosthesis is produced by correcting errors and deviations based on the experience of the operator.

Various instruments and methods have been disclosed for accurate occlusion acquisition (Patent Documents 1 and 2). In patent document 1, in order to prevent the slide which arises in the inclined surface of an up-and-down tooth | gear on a flat core material provided with the 1st acquisition layer and the 2nd acquisition layer, An occlusal acquisition tool provided with anti-sliding means is disclosed. By means of the slide prevention means, it is possible to prevent penetration and breakage of the occlusal acquisition tool and to prevent the lower jaw from shifting in the occlusal state. The 1st acquisition layer and the 2nd acquisition layer which are located in both surfaces of the core material provided with the slide prevention means consist of paraffin or wax, and can record a patient's occlusion state.

In Patent Document 2, plate-shaped drawing blades are attached to the left and right molar portions of one of the upper and lower jaw base floors that fit the upper and lower jaws, and recording blocks are attached to the left and right molar portions of the other base floor. An occlusal acquisition method is disclosed in which the mandibular position is determined by adjusting the height of the drawing blade or the recording block in a state where the is placed in the oral cavity. In the method using an occlusal acquisition device comprising a drawing blade and a recording block, the physiological occlusal sensation is well understood by the patient, and the accurate and reproducible mandibular position can be recorded.

JP 2005-261510 A JP 2005-152106 A

The occlusal acquisition tool of Patent Document 1 is effective for acquiring occlusion by a patient whose temporomandibular joint has a stable condylar position and has a stable central position. It is not stable and cannot be bitten. In addition, there are problems that a large number of teeth are missing and treatment is performed at the same time, or treatment of the free end portion has a small support area, and stable occlusion cannot be obtained. Moreover, although the occlusal acquisition instrument of patent document 2 can be used for complete denture treatment, when there are residual teeth, it is not possible to perform occlusal acquisition.

In addition, in the occlusal acquisition method using wax that is generally performed at present, there is a problem that it is difficult to reproduce the occlusal shape of the patient because the wax is broken or deformed by the patient's occlusion. Further, since the wax is used after being warmed and softened, there is a problem that the softening is not uniform, a hard part is generated, and the occlusal position is easily induced. Further, since the wax hardens while being in contact with the temperature as the temperature decreases, the condyle cannot move to the stable position from the guide position of the contact surface.

Furthermore, in the case of full mouse (full jaw) treatment, it is difficult to obtain a central position (muscle position) by obtaining an occlusion. This is because there is a region at the center position, and the position changes with each acquisition. In the case of crown restoration treatment using a crown bridge, even if the clearance is secured at the central occlusal position before formation, if the occlusion at the central position is obtained after formation, the clearance is often insufficient. In addition, when the technique of the operator is low, the occlusion may be determined without noticing that the patient is biting too much at the time of occlusion acquisition and is sinking from the original occlusal plane.

In addition, when taking an impression, it is difficult to clearly reproduce the margin (prosthesis-to-tooth boundary) of all upper 14 teeth or lower 14 teeth. For example, silicone impression materials usually have different fluidity at the application site and hardness after curing, so it is difficult to take an impression for all 14 teeth at once.

An object of the present invention is to solve the above-described problems and to provide an occlusal acquisition device that can accurately perform occlusal acquisition of the lower jaw regardless of the technique of the operator. It is another object of the present invention to provide an acquisition tool that can simultaneously perform occlusal acquisition and impression acquisition.

The present invention relates to the following harvesting instruments and methods of using the harvesting instruments.
(1) A partial tooth collection device having a length corresponding to the number of teeth to be prosthetic treated, which is made of a hard material and has an upper acquisition surface that performs occlusal acquisition on one surface and an occlusion on the other surface A harvesting instrument comprising a harvesting section having a lower harvesting surface for harvesting or impression capturing, and an occlusal paper holder gripping section provided on the cheek side.
(2) It is made of a hard material, and includes an acquisition part having an upper acquisition surface that performs occlusal acquisition on one surface and a lower acquisition surface that performs impression acquisition on the other surface, and an occlusal paper holder gripping unit. A harvesting instrument provided, wherein the harvesting part has a shape similar to a patient's crown.
(3) An acquisition tool that performs occlusal acquisition on the upper acquisition surface for each tooth and performs impression acquisition on the lower acquisition surface so as to make point contact with the opposing teeth or occlusal floor The harvesting instrument according to (1), wherein the upper harvesting surface is formed in one or a plurality of convex shapes or planar shapes.
(4) The harvesting instrument according to (1), wherein the harvesting instrument performs occlusal harvesting on the upper harvesting surface and the lower harvesting surface, wherein the harvesting part is made of a substantially flat member.
(5) The harvesting instrument according to any one of (1) to (4), wherein the thickness of the harvesting instrument is 0.1 to 5.0 mm.
(6) The collection device according to any one of (1) to (5), wherein different sizes are prepared so that the size can be selected according to the size of the patient's jaw.
(7) The harvesting device according to any one of (1) to (6), which can be cut to a near-centrifugal diameter corresponding to the number of teeth to be prosthetic treated.
(8) The harvesting device according to any one of (1) to (7), which includes a mechanism for preventing accidental ingestion.
(9) Grasp the occlusal paper holder grip part of the harvesting instrument according to any one of (1) to (8), and place impression material on the upper and lower harvesting surfaces. An acquisition method in which the upper and lower teeth of the patient are occluded or the occlusion and impression are acquired simultaneously.

The figure which shows the occlusion acquisition instrument of Example 1. FIG. The figure which shows the aspiration prevention mechanism of the occlusal acquisition instrument of Example 1. FIG. The figure which shows the usage method of the occlusion acquisition instrument of Example 1. FIG. The figure which shows the double acquisition instrument of a crown shape. 4A shows the double harvesting instrument of Example 2, and FIGS. 4B and 4C show the dual harvesting instrument of Example 3. FIG. The figure which shows the double collection instrument used for abutment tooth formation. 5A and 5B show a double picking device for one tooth of Example 4, and FIGS. 5C and 5D show a double picking device for multiple teeth of Example 5. FIG.

The acquisition device disclosed in the present specification can cope with occlusal acquisition and impression acquisition performed in all types of dental prosthetic treatments, regardless of the skill and experience of the operator. For example, full-mouse treatment for crown restoration, crown-bridge treatment for crown restoration, and prosthetic treatment such as implant and denture treatment.

This specification discloses a device that can simultaneously perform occlusal acquisition of upper and lower teeth, and a device that can simultaneously perform occlusal acquisition and impression acquisition. In this specification, an instrument capable of simultaneously performing occlusal acquisition of upper and lower teeth is referred to as an occlusal acquisition instrument, and an apparatus capable of simultaneously performing occlusal acquisition and impression acquisition is referred to as a double acquisition instrument. Are collectively referred to as a harvesting instrument.

Here, the jaw position refers to the three-dimensional position of the lower jaw relative to the upper jaw, and defines the contact position relationship between the upper and lower jaws necessary for mastication. Since the maxilla is a part of the skull, the position is fixed with respect to the skull, while the mandible has a temporomandibular joint on the left and right and moves not only vertically but also horizontally. The position relative to is not fixed. Since there are various theories on the definition of the central position, it is assumed here that “central position = tapping point (muscle position) = condylar stable position”.

It is necessary for the occlusal acquisition to be performed in the condylar stable position so that the horizontal position can move freely even after the upper and lower dentitions come into contact with each other during occlusal acquisition. When the horizontal free movement is given, the mandibular head moves to the stable position of the condyle without any difficulty in the mandibular fossa. If the occlusal is obtained after the mandibular head is moved, and an appropriate intercuspal position is given to the position with an artificial tooth, the central occlusal position can be determined, and the central position and the central occlusal position coincide.

In other words, the position where the temporomandibular joint is most likely to bite with zero horizontal load (condylar stable position = central position = physiological occlusion) is obtained by occlusion, and artificial teeth are arranged and prosthetics are inserted at that position. If an alignment (central occlusion position = prosthetic occlusion) is given, the central position and the central occlusal position coincide. However, there has never been a method or instrument for performing occlusal acquisition in this way. The present invention relates to a device that can perform occlusal acquisition by matching a central position and a central occlusal position.

Hereinafter, the occlusal acquisition tool will be described in detail with reference to the drawings.
[Example 1]
FIG. 1 shows an example of a flat occlusal acquisition tool.

The occlusal acquisition device 1 of the present embodiment is composed of a flat sheet-like member having an acquisition portion having a length of a dentition that requires occlusal acquisition. For occlusal acquisition, impression materials such as silicone impression material, WAX material, resin material, and impression plaster are placed on the upper and lower surfaces of the occlusal acquisition device, and the occlusal position of the upper teeth and the occlusal position of the lower teeth are simultaneously set. Take it.

The occlusal acquisition device 1 may be any sheet as long as it has a certain hardness. The constant hardness means a hardness that does not break when a patient bites and does not deform even when the patient goes out of the oral cavity. For example, synthetic resin such as dental composite resin, acrylic resin, polycarbonate, polystyrene, polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, ABS resin, etc., fiber such as cardboard / paperboard, ceramic paper, waterproof paper, PP film processed paper A metal material such as a material, a copper plate, a zinc plate, an aluminum plate, a brass plate, an iron plate, a stainless steel plate, a nickel plate, a silver plate, a titanium plate, or a lead plate can be used.

The thickness of the sheet may be about 0.1 to 5.0 mm. In the case of a flat plate-shaped occlusal acquisition tool to be described later, the thickness may be selected according to the clearance, and when the clearance is large, a thickness of about 1.0 to 5.0 mm can be used. If the clearance is small, a thickness of about 0.1 to 3.0 mm, more preferably about 0.3 to 1.0 mm may be used.

When the thickness of the sheet is greater than 5.0 mm, when the occlusal acquisition is performed, the thickness of the sheet affects the occlusal height, and the occlusal acquisition may not be performed accurately. In addition, when the thickness of the sheet is less than 0.1 mm, it is preferable because it may be deformed or broken when the patient bites, although it depends on the material of the sheet used for the bite acquisition device 1. Absent. If the sheet thickness is 0.3 to 1.0 mm, it does not affect the occlusal height, and it can be deformed when the patient bites, no matter what material sheet is selected. Hard to break.

Also, as will be described later, the harvesting instrument of the present invention is used by being gripped by an occlusal paper holder. Since the occlusal acquisition is performed with the patient closed, the instrument such as tweezers or forceps cannot be inserted into the patient in the closed state, particularly the back teeth. As a result, it is impossible to accurately obtain an occlusion and take an impression. Therefore, the gripping portion needs to have a thickness that can be gripped by the occlusal paper holder. The thickness that can be gripped by the occlusal paper holder is 15 mm or less, preferably 10 mm or less, more preferably 5 mm or less. Moreover, although it depends on the material used, it is preferable that the thickness is 0.1 mm or more so that the shape does not change such as bending.

The occlusal acquisition device 1 is a partial tooth occlusion acquisition device 2 or 3 used for the preparation of a crown or bridge in the restoration of a dental prosthetic treatment. There is a tool 4.

The partial tooth occlusal acquisition devices 2 and 3 have different lengths in the dentition direction so that the length corresponding to the number of teeth to be prosthetic treated can be selected. In addition, partial tooth occlusal acquisition devices and full jaw occlusal acquisition devices are available in several different sizes so that appropriate sizes can be selected according to the patient's physique and jaw size. It is prepared.

The occlusal acquisition device 1 includes

occlusal acquisition units

2a, 3a, and 4a, and occlusal paper

holder holding units

2b, 3b, and 4b. The

occlusal acquisition units

2a, 3a, and 4a are portions that perform occlusal acquisition by arranging impression materials on both sides. The occlusal acquisition part may be provided with a small hole 5 so that impression materials such as silicone, gel, and wax are easily entangled. Providing the small holes 5 makes it difficult for the impression materials on the upper and lower surfaces of the occlusal acquisition part to be connected by the small holes 5 across the occlusal acquisition part. The small holes 5 can be appropriately provided depending on the impression material to be used, the material of the occlusal acquisition device 1, and the region that requires occlusal acquisition.

The occlusal acquisition device 1 includes occlusal

paper holder grips

2b, 3b, and 4b so that the operator can hold the occlusal paper holder with the occlusal paper holder. Here, the occlusal paper

holder gripping portions

2b and 3b of the partial tooth occlusion obtaining instrument are provided on one side, but may be provided on both sides. Further, the occlusal

paper holder grips

2b, 3b, 4b may be provided with an aspiration prevention mechanism in order to prevent aspiration of the patient.

Since the partial tooth occlusal acquisition devices 2 and 3 are very small devices when the tooth area requiring occlusal acquisition is narrow, it is preferable to provide a mechanism for preventing aspiration of the patient. . The aspiration preventing mechanism can be configured to adhere the occlusal paper holder and the partial tooth occlusion obtaining devices 2 and 3 or to be connected by a thread-like member (FIG. 2).

The aspiration prevention mechanism 6 having an adhesive surface is provided in the occlusal paper holder grip 2b of the partial tooth occlusal acquisition device 2, and is configured such that the adhesive surface adheres to the occlusal paper holder (FIG. 2 upper). ). The adhesive surface is produced, for example, by adhering a double-sided tape to the occlusal paper holder grip. By peeling off the release paper 7 during use and adhering to the tip of the occlusal paper holder, the release paper 7 is not detached from the occlusal paper holder, and aspiration can be prevented.

Alternatively, an aspiration prevention mechanism 8 using a thread-like member connected to the occlusal paper holder grip 2b of the partial tooth occlusal acquisition device 2 may be used (center of FIG. 2). The aspiration preventing mechanism 8 is made of a thread-like member, and one end of the thread-like member is joined by being fixed to the occlusal paper holder grip 2b of the partial tooth occlusal acquisition device 2. The other end of the thread-like member may be used by making a ring and hooking it on the handle portion of the occlusal paper holder. Even if the partial tooth occlusal acquisition device 2 is detached from the occlusal paper holder A in the oral cavity of the patient, aspiration can be prevented because it is locked by the aspiration prevention mechanism 8.

Further, the aspiration preventing mechanism 9 has a configuration in which the other end of the thread-like member is clipped and joined to the occlusal paper holder (lower side in FIG. 2). It is the same that one end of the thread-like member of the aspiration preventing mechanism 9 is fixed by being fixed to the occlusal paper holder holding part 2b of the partial tooth occlusal acquisition device 2, but the other end is connected to the clip. Match. By sandwiching the handle portion of the occlusal paper holder with the clip portion and grasping and using the occlusal acquisition device 2 for partial teeth, the partial occlusion acquisition device 2 comes off the occlusal paper holder A in the oral cavity of the patient. Even if it is a case, aspiration can be prevented.

Next, a method of using the occlusal acquisition instrument of Example 1 will be described (FIG. 3). Here, the case where the partial tooth occlusion obtaining instrument 2 'is used will be described. The partial-tooth occlusal acquisition device 2 ′ has a small hole and a shape including occlusal paper holder grips on both sides in a direction perpendicular to the dentition of the occlusal acquisition unit 2a. The method of use is the same even when a partial tooth occlusal sampling device is used. The basic method of use is the same even when using a full jaw occlusal acquisition tool.

First, a partial tooth occlusal acquisition device 2 ', an occlusal paper holder A, and a cartridge dispenser B loaded with an impression material are prepared (step 1 in FIG. 3). Next, with the occlusal paper holder A, the occlusal paper holder holding part of the partial tooth occlusal acquisition device 2 ′ is held, and the impression material is applied to both the upper acquisition surface 10 and the lower acquisition surface 11 of the occlusal acquisition part. Place (Step 2 in FIG. 3). Next, the partial tooth occlusal acquisition device 2 ′ with impression material in the patient's mouth is inserted, and the patient bites the partial tooth occlusion acquisition device 2 ′ with impression material. Perform (step 3 in FIG. 3). After a predetermined time has elapsed, after confirming that the impression material has hardened in the oral cavity of the patient, the partial tooth occlusal acquisition device 2 'is removed from the oral cavity of the patient (step 4 in FIG. 3). It is possible to simultaneously obtain the occlusion of the upper teeth on the upper obtaining surface 10 and the lower teeth on the lower obtaining surface 11.

Since the occlusal acquisition device of this embodiment is manufactured of a hard material such as acrylic resin or polycarbonate as described above, it does not break even if the patient bites in, and does not deform even if it goes out of the oral cavity. Therefore, it is possible to accurately obtain the bite regardless of the skill of the operator.

Conventionally, occlusal acquisition using a material such as wax, which deforms when chewed, and occlusion acquisition of a silicone impression or resin polymerization that hardens the paste, occlusal acquisition using a tapping method of a hard material Was never done. However, the outer pterygoid muscle is active by performing occlusal acquisition using the tapping method of a hard material. Immediate side shift can be suppressed by performing occlusal acquisition while the outer pterygoid muscles are active. As a result, the occlusal acquisition obtained by this method is under the same conditions as the final prosthesis, so that it is possible to reproduce the terminal-hinge axis that has been difficult with the conventional method. Therefore, by using an occlusal acquisition device made of a hard material as shown in the examples, a final prosthesis can be produced by occlusal acquisition that reproduces the most easily chewable jaw position of a patient.

Here, in order to obtain optimal occlusion, it is important to understand the muscles, mandibular movements, and joint roles during mastication. Mastication is an operation performed by four types of muscles, temporal muscles, masseters, medial pterygoid muscles, and lateral pterygoid muscles. The temporal, masseter, and medial pterygoid muscles are all muscles that raise the mandible as a closing muscle. In contrast, the outer pterygoid muscles are divided into two types, upper and lower head, and are considered to have different functions.

The inferior head of the outer pterygoid muscle starts from the outer surface of the outer plate of the sphenoid pterygoid process, and is directed upward and outward from the back, mainly stopping at the lower head and neck. When the left and right lateral pterygoid inferior heads contract simultaneously, the mandibular head is pulled below the joint nodule and the mandible projects forward. When one side contracts, there is a medial rotational movement of the ipsilateral mandibular head and a lateral movement of the opposite mandible. When the outer pterygoid muscle functions with the mandibular mandibular constrictor, the mandible descends and the mandible slides forward and downward along the joint nodules.

The outer pterygoid upper head is smaller than the outer pterygoid inferior head, starts at the lower side of the sphenoid wing, faces almost horizontally toward the posterior outer side, and stops on the joint capsule, disc, and articular process neck To do. The lateral pterygoid upper head is active only when interlocked with the mandibular elevation muscle. That is, it operates when the upper and lower teeth are in contact. Since the outer pterygoid muscle is a muscle located inside, it is difficult to obtain a myoelectric potential, and detailed analysis of its operation is difficult. However, since the masticatory movement is made up of the interaction of the opening and closing muscles, the upper pterygoid upper head indicates that the closing movement stopped at the vertical stop in the mouth, on the joint capsule / disc and the neck of the joint process. It is thought to play a role of sensing biological signals and sending biological signals to the lower head of the maxillary pterygoid muscle. That is, it is considered that the upper head of the outer pterygoid muscle plays a role of counterbalance that regulates the function of the masticatory muscles.

However, when the temporomandibular joint is worn due to aging, the jaw movement, which is movement on the joint capsule / disc and the neck of the articular process in the worn temporomandibular joint space, is different from the normal case. It becomes. Therefore, the outer pterygoid upper head cannot play the original role. When the lateral condyle starts moving from the center position and moves inward so as to shift laterally immediately after lateral movement, it is called an immediate side shift. At the same time, it is thought to cause an immediate side shift.

The temporal, masseter, medial and lateral pterygoid muscles are all important for carrying out the masticatory function, but the occlusal sampling is obtained especially when the lateral pterygoid upper head that controls the masticatory function is active. This is nothing but to obtain occlusion at a position where the living body can easily bite. In conventional non-contact state and softening material occlusion acquisition in the conventional method, it is considered that the occlusal acquisition is performed without the activity of the lateral pterygoid superiority being reproduced, so appropriate occlusion acquisition is performed. There are also cases where there is no. On the other hand, by using the occlusal acquisition device made of a hard material shown in the present embodiment, it becomes possible to reproduce the activity of the outer pterygoid upper head, and it is a simple method, but highly accurate occlusion acquisition It can be performed.

[Example 2]
Next, a description will be given of a sampling device that can simultaneously perform occlusal acquisition and impression acquisition. FIG. 4A shows an example of a double acquisition tool that simultaneously performs occlusal acquisition and impression acquisition. The double collection device 21 includes a double collection device 22 for full jaw impression and a double collection device 23 for partial impression. The material and thickness of the double harvesting instrument 21 may be the same as those of the occlusal harvesting instrument of Example 1. The double collection device 21 includes a crown-shaped acquisition unit 24, cheek-side

gripping portions

22a and 23a which are occlusal paper holder gripping portions provided on the buccal side, and a tongue which is an occlusal paper holder gripping portion provided on the lingual side. It consists of a side grip 22b.

The double jaw collecting tool 22 shown in FIG. 4A is for upper teeth. The full jaw impression double acquisition device 22 has a shape similar to a patient's crown (clinical crown). There are several types of double-collecting instruments 22 for impressions of the entire jaw so that different sizes can be selected depending on the physique of the patient and the size of the jaw. .

The double jaw-taking tool 22 for the whole jaw impression is provided with a buccal gripping portion 22a and a lingual gripping portion 22b on the buccal side and the lingual side of each tooth crown, and can be gripped by an occlusal paper holder. . The double jaw appliance for lower jaw full jaw impression is not shown here, but several kinds of different sizes similar to the upper teeth are prepared and can be selected appropriately according to the patient's jaw and tooth size. Keep it.

FIG. 4A shows a partial impression double-acquisition instrument 23 for right-side lower teeth, including partial incisors to second molars. A buccal gripping portion 23a for gripping by the occlusal paper holder is provided for each tooth crown. Here, a shape having only the cheek-side gripping portion 23a is shown, but a shape having a tongue-side gripping portion may also be used.

Further, the double jaw collecting instrument 22 for whole jaw impression and the double jaw collecting instrument 23 for partial impression may be used by cutting only necessary portions for each dental crown. It can cut easily by making a notch between the crown and the crown. In addition, if an aspiration prevention mechanism similar to that of the occlusal acquisition device of Example 1 is provided, the patient will not accidentally swallow it even when cut and used.

使用 How to use the double harvesting instrument 21 will be explained. The double acquisition tool 21 is held by the occlusal paper holder, and the impression material is placed on both surfaces of the double acquisition instrument, that is, the upper acquisition surface 25 that is the outer side of the crown and the lower acquisition surface 26 that is the inner side. Next, the impression acquisition and the occlusion acquisition can be performed simultaneously by inserting the double acquisition device 21 with the impression material on both sides into the patient's mouth and having the patient bite the double acquisition device 21. it can. After a predetermined time has elapsed, after confirming that the impression material has hardened in the oral cavity of the patient, the double collection device 21 is taken out from the oral cavity of the patient. Impression acquisition can be performed on the inner lower acquisition surface 26 facing the crown, and occlusion acquisition can be performed on the upper acquisition surface 25 on the outer side of the crown.

The double harvesting device 21 shown in Example 2 can check the lack of clearance before impression, and can simultaneously check the balance of the bridge in the case of bridge treatment.

Also, since the occlusal acquisition part has a crown shape, it can be used as an immediate temporary tooth. Since the provisional tooth form is the same as that at the time of impression, gingival shortening due to the provisional tooth does not occur, so even if there is no dental technician in the hospital, anyone can reproduce the tooth form. Furthermore, since the three-dimensional space during treatment in the oral cavity is simply reproduced and restored with the inner tray, it is transferred to the model outside the oral cavity with a secondary impression, so that the accuracy of the technical product is improved and the final prosthesis is set. The amount of adjustment in the oral cavity can be suppressed to a very small amount.

Since the double acquisition device 21 of the present embodiment can perform impression acquisition and occlusal acquisition at the same time, it can rapidly proceed with treatment. Moreover, since the double collection device 21 is manufactured by a hard material such as an acrylic resin or polycarbonate like the occlusal collection device shown in Example 1, the double collection device 21 does not break even if the patient bites into it. Even if it goes out, it does not deform. Furthermore, since the lack of clearance can be checked before the impression, it is possible to accurately obtain the bite regardless of the skill of the operator. In addition, it is the same as that of Example 1 that the thing from which the size differs according to the position of the tooth to apply and a patient's physique is prepared.

[Example 3]
Variations of the crown-shaped double acquisition tool provided with the wire will be described (FIGS. 4B and 4C). FIG. 4B shows as an example a double extraction tool 31 for an entire jaw impression provided with a wire. The double jaw appliance 31 for full jaw impression has the same structure as the double jaw appliance 22 for full jaw impression shown in Example 2 except that a wire 33 is provided in the central part of the crown. That is, each tooth crown is provided with a buccal gripping portion 32a on the cheek side and a lingual gripping portion 32b on the lingual side, and can be gripped by the occlusal paper holder. The wire is a flexible one like a wire used for orthodontics.

For example, if the patient's teeth are poorly aligned and the dentition is misaligned with the full jaw impression double-acquisition tool 31, use a cut along the dentition other than the wire. Can do. As a result, occlusal acquisition and impression acquisition can be performed more accurately.

FIG. 4C shows a variation of the partial impression taking instrument provided with a wire. In the partial impression double acquisition device 32, the buccal gripping portion 33a is not independent for each tooth crown but has a continuous shape. The wire 34 is disposed at the center of the cheek side grip 33a. The partial impression double acquisition device 32 is similar to the above-described double jaw acquisition device for full jaw impression, by cutting the dental crown while leaving a wire, so that even for patients with poor alignment, the partial impression double acquisition device 32 is used. A sampling device can be arranged to perform occlusal acquisition and impression acquisition.

Here, although the acquisition device provided with the wire in the crown part of the double acquisition device 31 for the entire jaw impression or the buccal gripping portion 33a of the double acquisition device 32 for the partial impression, the double acquisition device for the entire jaw impression is shown. It is good also as a structure provided with the wire in the crown part of the holding | grip part of a collection tool, and the double collection tool for partial impressions. In addition, it is the same as that of Example 1 etc. that the thing from which a size differs according to the position of the tooth to apply and a patient's physique is prepared.

[Example 4]
Next, the double collection tool used for abutment tooth formation will be described. FIG. 5A shows a perspective view, a side view, and a view seen from the occlusal floor side of the single-tooth double harvesting instrument 41. What is necessary is just to use the material and thickness of the double sampling instrument for single teeth similar to the occlusal acquisition instrument of Example 1. Moreover, it is the same as that of Example 1 etc. that the thing from which a size differs according to the position of the tooth to apply and a patient's physique is prepared. The single-tooth double harvesting instrument 41 includes a substantially hemispherical harvesting section 42 and an occlusal paper holder gripping section 43. The upper (convex) upper acquisition surface 44 of the hemispherical shape is an occlusal surface and functions as an occlusal acquisition unit. Further, the opposite side of the occlusal surface has a concave shape, which is a lower acquisition surface 45 for obtaining the impression of the abutment tooth. Further, the occlusal paper holder grip 43 may be provided with a mechanism for preventing accidental ingestion in the same manner as the occlusal acquisition device of the first embodiment.

After the occlusal acquisition and impression acquisition are performed on the upper acquisition surface 44 and the lower acquisition surface 45, the position of the impression material in the oral cavity is clarified, and the adhesion between the impression material and the acquisition instrument is increased. Thus, alignment marks 46 and 47 are formed. The alignment mark 46 of the upper acquisition surface 44 is formed on the occlusal floor side of the upper acquisition surface 44, and is configured to clarify the positional relationship of the impression material after the occlusion acquisition is performed. . Furthermore, although not shown here, it is possible to make it possible to recognize the front and rear positions by further forming vertical grooves as alignment marks on the upper acquisition surface 44.

The alignment mark 47 inside the lower acquisition surface 45 is formed on the occlusal floor side of the lower acquisition surface 45. After taking impression material on the lower acquisition surface 45, even if the impression material taken from the double acquisition tool is removed, the positional relationship becomes clear because the alignment mark 47 is given. . A vertical groove may be formed in the alignment mark on the lower acquisition surface 45 as well as the groove on the upper acquisition surface. In addition, here, the alignment mark has a groove shape as an example, but the alignment mark may be a convex shape if the position is known.

Next, variations of single-tooth double harvesting instruments are shown. FIG. 5B shows a perspective view, a side view, and a view from the occlusal surface side of the single-tooth double harvesting device 48. The single-tooth double harvesting instrument 48 includes a harvesting part 42 and an occlusal paper holder gripping part 43 as in the single-tooth double harvesting instrument shown in FIG. 5A. Three shallow dome-shaped convex portions 49 are formed on the upper surface of the obtaining unit 42. Since it is possible to contact at a plurality of points when performing occlusal acquisition by the convex portion 49, it is possible to perform occlusal acquisition more stably. Here, the number of the convex portions 49 is three, but the number of the convex portions 49 may be about two to five.

5A and 5B show an example of a hemispherical device that performs occlusal acquisition by contacting the upper acquisition surface at one point or three points. For example, the shape of the acquisition unit is cylindrical and the upper acquisition surface is obtained. You may comprise so that a surface may be made into a planar shape.

The method of use will be described using the single-tooth double harvesting instrument 41 as an example. First, the occlusal paper holder grip 43 of the double sampling device is sandwiched between the occlusal paper holders and adjusted according to the height in the oral cavity of the patient, and then the impression material is applied to the upper acquisition surface 44 and the lower acquisition surface 45, respectively. Place it in an area where it is necessary to take an occlusion and take an impression. Since the single-tooth double harvesting tool 41 uses a hard material similarly to the harvesting tool of Example 1, it is possible to accurately perform occlusal harvesting.

[Example 5]
Next, the double tooth collecting tool for multiple teeth will be described. FIG. 5C shows a perspective view, a side view, and a view as seen from the occlusal floor side of the multiple-tooth double harvesting instrument 51. The multiple-tooth double harvesting instrument 51 has a configuration in which a harvesting instrument having a harvesting part 52 and an occlusal paper holder gripper 53 is connected by a connecting part 54 for each tooth. On the occlusal floor side of the obtaining unit 52, a placement unit 55 is provided along the outer edge of the obtaining unit 52. Since the placement portion 55 is provided, the placement portion 55 can be placed at a stable position in the case of performing occlusion acquisition and impression acquisition in the oral cavity of the patient. Here, the mounting portion 55 is exemplified as a rectangular shape with rounded corners, but may be circular.

Also, the mounting portion 55 and the connecting portion 54 are easily entangled with an impression material, wax, and the like by providing a small hole 56. Moreover, the alignment mark can be provided similarly to the single tooth double collection tool. Here, a configuration in which the groove-shaped alignment mark 59 is provided on the lower acquisition surface 58 is shown, but an alignment mark may also be provided on the upper acquisition surface 57.

As with the single-tooth double-sampling tool 51, the multiple-tooth double-sampling tool 51 is also equipped with an impression material on the upper and lower acquisition surfaces 57, 58, and by performing occlusal acquisition and impression acquisition, Occlusal acquisition of multiple teeth and impression acquisition can be performed simultaneously.

Next, variations of the double-tooth sampling tool for multiple teeth are shown. FIG. 5D shows a perspective view, a side view, and a view seen from the occlusal floor side of the multiple-tooth double harvesting device 60. The multiple-tooth double collection device 60 is similar to the multiple-tooth double collection device shown in FIG. 5C, in addition to the collection unit 52 for each tooth, the occlusal paper holder grip unit 53 on the tongue side, and the buccal side grip A portion 62 is provided. In the multiple-tooth double collection tool 60, the collection unit 52 is connected by the connection unit 63 of the buccal gripping unit 62. Since it is connected by a thin connecting part, it can cope with slight distortion of the dentition.

Here, a double-acquisition tool for two teeth is shown, but a configuration may be adopted in which the obtaining part is connected by a connecting part so as to correspond to three or more teeth. Furthermore, it can also be set as the structure which can arrange | position a wire in a connection part and can respond to some distortion. In addition, the shape of the obtaining part may be hemispherical, cylindrical, or convex.

[Application example]
Next, an application example in which the double collection tool is used for occlusal acquisition will be described. As described above, even if the activity of the outer pterygoid muscle is promoted, if there is an early contact in the oral cavity, the central position (muscle position) is prevented from being collected. In particular, the unevenness of the occlusal surface becomes a problem in the treatment in which the opposite teeth other than the upper and lower simultaneous treatments exist. In this case, since the surgeon needs to adjust the height (mainly grinding) in the oral cavity, a simple convex occlusal acquisition device may be easy to adjust and easy to use.

The

double acquisition devices

41 and 51 can be used as an occlusal acquisition device for the production of dentures because the upper acquisition surfaces 44 and 57 function as an occlusal acquisition unit. Occlusion that requires grasping of the occlusal paper

holder gripping parts

43 and 53 with an occlusal paper holder or the like, adjusted according to the height of the patient's oral cavity, and then placing impression material on the upper acquisition surfaces 44 and 57 Installed in the floor area to obtain occlusion. When an occlusal acquisition is performed by placing an impression material on the upper acquisition surface, the patient bites the acquisition instrument, so that an indentation remains on the wax bank, and alignment can be performed after the acquisition of the occlusion.

Since the double-collecting

instruments

41 and 51 have different sizes in the dentition direction and different heights, select an appropriate size according to the size of the patient's teeth. Can do. Further, the height can be easily adjusted by grinding in the oral cavity. The height from the occlusal floor to the apex of the occlusal acquisition part is about 2 to 15 mm. Here, although the method of performing occlusal acquisition using the instrument shown in FIGS. 5A and 5C has been described, occlusal acquisition can be performed in the same manner even when a double acquisition instrument of another shape is used.

DESCRIPTION OF SYMBOLS 1 ... Occlusal acquisition instrument 2, 3, 2 '... Partial tooth occlusion acquisition instrument, 4 ... All jaw occlusion acquisition instrument, 2a, 3a, 4a ... Occlusal acquisition part, 2b, 3b, 4b, 43 53 ... Occlusal paper holder gripping part, 5, 56 ... Small hole, 6, 8, 9 ... Anti-aspiration mechanism, 7 ... Release paper, 10, 25, 44, 57 ... Upper sampling surface, 11, 26, 45 58 ... Lower acquisition surface, 21 ... Double acquisition device, 22, 31 ... Double acquisition device for whole jaw impression, 23, 32 ... Double acquisition device for partial impression, 24, 42, 52 ... Acquisition unit, 22a, 23a, 32a, 33a, 62 ... buccal gripping part, 22b, 32b ... lingual gripping part, 33, 34 ... wire, 41, 48 ... single tooth double picking instrument, 46, 47, 59 ... positioning Mark, 49 ... convex part, 51, 60 ... multiple tooth double sampling instrument, 54, 63 ... connecting part, 55 ... mounting part, A Articulating paper holder, B ... impression material cartridge dispenser

Claims

A partial tooth collection device having a length corresponding to the number of teeth to be prosthetic treated,
Made of hard material,
An upper acquisition surface that performs occlusal acquisition on one surface;
An acquisition part having an occlusal acquisition on the other side, or a lower acquisition side for taking an impression; and
A harvesting instrument comprising an occlusal paper holder grip provided on the buccal side.
Made of hard material,
An upper acquisition surface that performs occlusal acquisition on one surface;
A taking part having a lower taking surface for taking an impression on the other side;
A harvesting instrument comprising an occlusal paper holder gripping part,
A harvesting instrument in which the harvesting part has a shape similar to a dental crown of a patient.
Occlusal acquisition on the upper acquisition surface for each tooth,
A harvesting instrument for taking an impression on the lower gathering surface,
The acquisition instrument according to claim 1, wherein the upper acquisition surface is formed in one or a plurality of convex shapes or a planar shape so as to make point contact with an opposing tooth or an occlusal floor.
A harvesting instrument that performs occlusal harvesting on the upper harvesting surface and the lower harvesting surface,
The harvesting instrument according to claim 1, wherein the harvesting part is made of a substantially flat member.
The harvesting instrument according to any one of claims 1 to 4, wherein the harvesting instrument has a thickness of 0.1 to 5.0 mm.
To be able to select according to the size of the patient's jaw,
The harvesting device according to any one of claims 1 to 5, wherein those having different sizes are prepared.
The harvesting instrument according to any one of claims 1 to 6, which can be cut to a near-centrifugal diameter corresponding to the number of teeth to be prosthetic treated.
The harvesting device according to any one of claims 1 to 7, further comprising a mechanism for preventing accidental ingestion.
Gripping the bite paper holder gripping part of the harvesting instrument according to any one of claims 1 to 8,
An impression material is placed on the upper acquisition surface and the lower acquisition surface,
An acquisition method in which the patient's upper and lower teeth are occluded or the occlusion and impression are acquired simultaneously.