KR102597703B1 - Method and apparatus for taking edentulous impressions and tray complex therefor - Google Patents

Abstract

A method and device for making edentulous impressions and a tray complex therefor are disclosed. The edentulous impression-taking method according to one embodiment determines the shape and size of the tray using the shape and size of the dental arch so that a precise impression can be taken in a single visit by the patient without a preliminary impression process.

Description

Method and apparatus for taking edentulous impressions and tray complex therefor}

The present invention relates to technology for taking an impression of a patient and manufacturing complete dentures.

Typically, a patient must visit the dentist at least five times to make a full denture. Among them, three or more visits are required for basic work for impression taking and complete denture production. During the patient's first visit, a preliminary impression is taken using a ready-made tray, and a personalized tray customized for the patient is produced using the obtained preliminary impression. During the patient's second visit, a precise impression of the patient's mouth is taken using a personal tray. When the dental office sends a precision impression to a laboratory, the laboratory pours plaster on the precision impression to create a model and creates a record base and wax cream. Afterwards, during the patient's third visit, wax cream is applied to the patient's mouth and the baseline for manufacturing a complete denture is identified.

Due to this increase in the number of visits, there is a problem of lengthening the complete denture production schedule. Additionally, errors may occur during the process of injecting plaster into the impression body. Because of this, errors may occur between the record base and wax cream, which are based on plaster models.

Korean registered patent 10-2226949 (announced on March 17, 2021)

According to one embodiment, an edentulous impression taking method and device capable of taking a final impression through only one visit for an edentulous patient, and a tray complex therefor are proposed.

An edentulous impression-taking method according to an embodiment includes obtaining a plurality of ready-made trays of different shapes and sizes, acquiring scan data of a patient, and setting a plurality of landmarks in the scan data of the patient. , determining the shape and size of the patient's dental arch using a plurality of set landmarks, and selecting a ready-made tray corresponding to the determined arch shape and size from a plurality of ready-made trays.

In the step of setting a landmark, the Maxillary Tuberosities on both sides of the maxilla can be set as landmarks to select the size of the maxillary tray.

In the step of setting a landmark, the Retromolar Pad Mesial on both sides of the mandible can be set as a landmark to select the size of the mandibular tray.

In the step of determining the shape and size of the patient's dental arch, the size of the maxillary arch can be determined by calculating the distance between the maxillary tuberosities on both sides of the maxilla, and in the step of selecting a ready-made tray, the calculated distance between the maxillary tuberosities on both sides of the maxilla is calculated. You can select the size of the maxillary tray by comparing preset size values.

The step of determining the shape and size of the patient's arch can be done by calculating the distance between the retromolar pad mesials on both sides of the mandible. The step of selecting a ready-made tray can be done by calculating the distance between the retromolar pad mesials on both sides of the mandible. The size of the mandibular tray can be selected by comparing the distance and the preset size value.

In the step of setting landmarks, Canine Prominence on both sides of the maxilla and Maxillary Tuberosity on both sides can be set as landmarks to select the shape of the maxillary tray.

In the step of setting a landmark, the Canine Prominence on both sides of the mandible and the Retromolar Pad Mesial on both sides can be set as landmarks to select the shape of the mandibular tray.

The step of determining the shape and size of the patient's dental arch can be done by calculating the ratio value of the distance between the Canine Prominences on both sides of the maxilla divided by the distance between the Maxillary Tuberosities on both sides. The step of selecting a ready-made tray is, The shape of the maxillary tray can be selected by comparing the calculated ratio value and the preset size value.

In the step of selecting a ready-made tray, if the calculated ratio value is smaller than the first value, the shape of the maxillary tray is tapered, and if the calculated ratio value is greater than the first value and smaller than the second value, the shape of the maxillary tray is changed to an oval shape. If the calculated ratio value is greater than the second value, the shape of the maxillary tray is pre-classified as square, and the size of the maxillary tray can be selected from among the pre-classified sizes.

The step of determining the shape and size of the patient's arch is by calculating the ratio value of the distance between the Canine Prominence on both sides of the mandible divided by the distance between the Retromolar Pad Mesials on both sides. The step of selecting a ready-made tray is , the shape of the mandibular tray can be selected by comparing the calculated ratio value and the preset size value.

In the step of selecting a ready-made tray, if the calculated ratio value is less than the third value, the shape of the mandibular tray is set to a tapered shape. If the calculated ratio value is greater than the third value and smaller than the fourth value, the shape of the mandibular tray is set to an oval shape. If the calculated ratio value is greater than the fourth value, the shape of the mandibular tray is pre-classified as square, and the size of the mandibular tray can be selected from among the pre-classified sizes.

The edentulous impression-taking method includes the steps of taking an impression of a patient using a selected ready-made tray, selecting a maxillary and mandibular occlusal agent corresponding to the vertical height of the patient, the selected maxillary tray and maxillary occlusal agent, A step of combining the selected mandibular tray and the mandibular articulator, respectively, obtaining mandibular movement scan data by scanning the patient's mandibular movement using the combined tray and articulator, and occlusal information measured in the patient's mouth. It may further include acquiring occlusion scan data based on , and matching the occlusion scan data and mandibular movement scan data.

An edentulous impression-taking device according to an embodiment includes a data acquisition unit that acquires the patient's scan data and a plurality of ready-made trays of different shapes and sizes, sets a plurality of landmarks in the patient's scan data, and sets a plurality of landmarks. After determining the shape and size of the patient's dental arch using the landmark, it includes a control unit that selects a ready-made tray corresponding to the determined arch shape and size from a plurality of ready-made trays, and an output unit that displays the selected ready-made tray.

The tray complex according to one embodiment includes an upper tray and a lower tray having a size and shape corresponding to the size and shape of the patient's arch and including a predetermined attachment portion, a base, and an occlusal marker formed on at least a portion of the upper part of the base. The height of the occlusal marker is adjusted, and it is composed of a mandibular articulator and a base and an occlusal part formed on the entire upper part of the base, which are coupled to the mandibular tray through the coupling part, so that the height of the occlusal part is adjusted and coupled to the upper tray through the coupling part. Includes maxillary occlusal products.

The size and shape of the upper and lower jaw trays may be determined through distance values using a plurality of landmarks set in the scan data of the upper and lower jaw, respectively.

According to an edentulous impression-taking method and a tray complex therefor according to an embodiment, an impression is taken by selecting a ready-made tray corresponding to the shape and size of the patient's arch from among a plurality of ready-made trays of different shapes and sizes, thereby reducing the number of visits of the patient. can be reduced to 1 time.

Generally, the final impression is taken when the patient visits the hospital for the second time. According to one embodiment, the final impression can be taken by selecting a tray that corresponds to the shape and size of the patient's mouth when the patient visits the hospital for the first time, thus reducing the number of visits by the patient. The complete denture production period can be shortened.

1 is a diagram showing the configuration of an edentulous impression-taking device according to an embodiment of the present invention;
Figure 2 is a diagram showing the flow of an edentulous impression-taking method according to an embodiment of the present invention;
Figure 3 is a diagram illustrating the detailed flow of the ready-made tray selection step of Figure 2 according to an embodiment of the present invention;
4 is a view for explaining an example of selecting the size of an upper tray according to an embodiment of the present invention;
5 is a view for explaining an example of selecting the size of a mandibular tray according to an embodiment of the present invention;
6 is a view for explaining an example of selecting the shape of an upper tray according to an embodiment of the present invention;
7 is a view for explaining an example of selecting the shape of a mandibular tray according to an embodiment of the present invention;
8 is a diagram illustrating examples of upper and lower tray shapes selected according to an embodiment of the present invention;
Figure 9 is a diagram illustrating an example of selecting an occlusal agent according to an embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In describing the embodiments of the present invention, if it is judged that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted, and the terms described below will be used in the embodiments of the present invention. These are terms defined in consideration of the function of , and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention illustrated below may be modified into various other forms, and the scope of the present invention is not limited to the embodiments detailed below. Examples of the present invention are provided to more completely explain the present invention to those skilled in the art.

Hereinafter, in this specification, 'tray' means 'off-the-shelf tray' unless otherwise specified, for example, "individual tray".

Figure 1 is a diagram showing the configuration of an edentulous impression-taking device according to an embodiment of the present invention.

Referring to Figure 1, the edentulous impression taking device 1 according to one embodiment includes a data acquisition unit 10, a storage unit 12, a control unit 14, an input unit 16, and an output unit 18. .

The data acquisition unit 10 acquires dental image data from teeth including damaged teeth of the patient. Dental image data includes, for example, scan data of a patient, and the scan data includes impression body scan data, occlusion scan data, and mandibular movement scan data. And the data acquisition unit 10 acquires a plurality of ready-made trays of different sizes and shapes.

The storage unit 12 stores data such as information required to perform the operation of the edentulous impression taking device 1 and information generated according to the operation. For example, scan data of individual patients is stored in the storage unit 12 and can be provided to the control unit 14 upon user request. Dental image data of the upper and lower jaws of individual patients is stored in the storage unit 12, and data including scan data of a specific patient can be provided to the control unit 14 upon user request.

The control unit 14 or the edentulous impression-taking device 1 performs edentulous impression-taking. At this time, complete dentures are manufactured through control by a computer program. The control unit 14 according to one embodiment selects a ready-made tray for taking an edentulous impression. At this time, the tray and the occlusal agent are separated, a ready-made tray corresponding to the size and shape of the patient's arch is selected, an occlusal agent corresponding to the patient's vertical diameter height and arch shape is selected, and then the occlusal agent is combined with the selected ready-made tray. can do. Tray selection methods include selecting a tray that corresponds to the size and shape of the patient's arch from among a plurality of ready-made trays, designing a tray that corresponds to the size and shape of the patient's arch, and then printing it with a 3D printer. To this end, the control unit 14 can calculate the size and shape of the patient's dental arch using a predetermined landmark, and when the user measures the distance using the landmark, the input unit 16 receives the measured value and the control unit ( 14) You can select the size and shape of the tray using the entered measurement values.

The input unit 16 receives user manipulation signals through a user interface. For example, the input unit 16 receives a user manipulation signal, such as a mouse click, from a dental image displayed as a virtual graphic object on the screen through the output unit 18.

The output unit 18 displays dental images on the screen and displays the simulation process through the control unit 14 on the screen. Furthermore, complete dentures or trays designed through the control unit 14 can be output through a 3D printer.

The edentulous impression-taking device 1 according to one embodiment can allow the impression-taking steps, which were conventionally performed over at least two visits, to be completed in one visit. For example, conventionally, during the first visit, the user takes a preliminary impression using a ready-made tray and creates a patient-customized personal tray using the impression. Afterwards, during the second visit, the personal tray is used to accurately measure the patient's oral cavity. Get an impression. In contrast, the edentulous impression-taking device 1 according to one embodiment selects a ready-made tray corresponding to the shape and size of the patient's arch from among a plurality of ready-made trays of different shapes and sizes when the patient first visits the hospital, and selects the selected tray. The final impression can be taken using a ready-made tray. Accordingly, the number of patient visits can be reduced to one, shortening the complete denture production period.

The edentulous impression-taking device 1 according to one embodiment may be performed through a dedicated hardware device, or may be performed through software in a general-purpose hardware device. When performed on software, the edentulous impression-taking device 1 acquires the patient's dental image data and performs simulation through diagnosis and analysis using the dental image data through control by software to obtain an edentulous impression. . The edentulous impression taking device 1 can select a tray for taking an edentulous impression, acquire the patient's impression data and registration data using the selected tray, and then manufacture a complete denture using the impression data and registration data. there is.

Figure 2 is a diagram showing the flow of an edentulous impression-taking method according to an embodiment of the present invention.

Referring to Figures 1 and 2, the edentulous impression taking device 1 selects the size and shape of the ready-made tray (S210). For example, depending on the size of the patient's dental arch, the upper and lower tray sizes can be selected as Small (S), Medium (M), and Large (L), respectively. In addition, depending on the patient's arch shape, the shape of the upper and lower trays can be selected as tapering type, oval type, or square type, respectively. The detailed flow of the size and shape selection step (S210) of the ready-made tray will be described later with reference to FIG. 3.

Next, the edentulous impression taking device 1 takes an impression of the patient using the selected ready-made tray (S220). For example, using the closed mouth impression method, the upper jaw impression can be taken first and then the lower jaw impression can be taken.

Next, the edentulous impression taking device 1 selects the maxillary occlusal agent and mandibular occlusal agent corresponding to the patient's vertical diameter height (S230). At this time, rather than selecting the height of the mandibular articulator, the height of the mandibular articulator can be adjusted using the occlusal marker on the base of the mandibular articulator. Occlusal markers include cones, cylinders, and polygonal blocks.

Next, the edentulous impression-taking device 1 combines the selected maxillary tray and the maxillary articulator, and combines the mandibular tray and the mandibular articulator (S240). To connect an upper or lower jaw occlusal device to an upper or lower tray, a fastening portion on the upper part of the corresponding tray can be used.

Next, the edentulous impression taking device 1 obtains mandibular movement scan data by scanning the patient's mandibular movement using the combined tray and articulator (S250). Mandibular movement scan data can be obtained by scanning the dynamic path of the occlusal marker of the mandibular occlusal agent during mandibular movement.

Additionally, the edentulous impression-taking device 1 acquires occlusion scan data based on occlusion information measured within the patient's mouth (S260). For this purpose, the length of the patient's vertical dimension in the resting position (in a comfortable state for edentulous patients) is measured, an impression of the patient is taken, and the occlusal marker (e.g., cone) of the mandibular occlusal agent is softened to determine the length of the vertical diameter in the resting position. Determine the height of the occlusal vertical diameter so that it is approximately 2 to 4 mm lower. Once the height of the occlusal vertical dimension is determined, mandibular movement scan data can be obtained through mandibular movement, and occlusal scan data can be obtained by obtaining occlusal information in a centric relation bite (CR Bite) state. Here, the centric bite refers to the state in which the engagement between the upper and lower jaw is most comfortable.

Next, the edentulous impression-taking device 1 matches the occlusion scan data and the mandibular movement scan data (S270). At this time, the patient's upper/mandibular scan data can be matched together to reproduce the mandibular movement, and this can be used to manufacture a complete denture.

FIG. 3 is a diagram illustrating a detailed flow of the ready-made tray selection step of FIG. 2 according to an embodiment of the present invention.

Referring to FIGS. 1 to 3, the edentulous impression-taking device 1 acquires a plurality of ready-made trays of different shapes and sizes (S310) and obtains scan data of the patient (S320).

Next, the edentulous impression taking device 1 sets a plurality of landmarks in the patient's scan data (S330). For example, the edentulous impression taking device 1 can set the Maxillary Tuberosity on both sides of the maxilla as landmarks to select the size of the maxillary tray. To select the size of the mandibular tray, the retromolar pad mesial on both sides of the mandible can be set as a landmark. As another example, the edentulous impression taking device 1 can set the Canine Prominence on both sides of the maxilla and Maxillary Tuberosity on both sides as landmarks to select the shape of the maxillary tray. To select the shape of the mandibular tray, the Canine Prominence on both sides of the mandible and the Retromolar Pad Mesial on both sides can be set as landmarks.

Next, the edentulous impression taking device 1 determines the shape and size of the patient's dental arch using a plurality of set landmarks (S340), and selects a ready-made tray corresponding to the determined arch shape and size from among the plurality of ready-made trays. Do it (S350).

Selection of Maxillary Tray Size For example, in the step of determining the shape and size of the patient's arch (S340), the edentulous impression taking device 1 determines the size of the maxillary arch by calculating the distance between the Maxillary Tuberosities on both sides of the maxilla. Next, in the ready-made tray selection step (S350), the size of the maxillary tray is selected by comparing the calculated distance between the maxillary tuberosities on both sides of the maxilla and a preset size value.

Selection of mandibular tray size For example, in the step of determining the shape and size of the patient's arch (S340), the edentulous impression taking device 1 determines the arch size of the mandible by calculating the distance between the retromolar pad mesials on both sides of the mandible. Next, in the ready-made tray selection step (S350), the size of the mandibular tray is selected by comparing the calculated distance between both retromolar pad mesials and a preset size value.

For example, in the step of determining the shape and size of the patient's arch (S340), the edentulous impression-taking device 1 calculates the ratio value by dividing the distance between the two Canine Prominences of the maxilla by the distance between the Maxillary Tuberosities on both sides. Determine the shape of the dental arch.

Next, the edentulous impression taking device 1 selects the shape of the maxillary tray by comparing the calculated ratio value and the preset size value in the ready-made tray selection step (S350). At this time, if the calculated ratio value is less than the first value, the shape of the maxillary tray is tapered, and if the calculated ratio value is greater than the first value and smaller than the second value, the shape of the maxillary tray is elliptical. If it is greater than this second value, the shape of the maxillary tray is pre-classified as square, and the size of the maxillary tray can be selected from among the pre-classified sizes.

For example, in the step of determining the shape and size of the patient's dental arch (S340), the edentulous impression taking device 1 calculates the ratio value by dividing the distance between the canine prominences on both sides of the mandible by the distance between the retromolar pad mesials on both sides. Determine the shape of the mandibular arch.

Next, the edentulous impression taking device 1 selects the shape of the mandibular tray by comparing the calculated ratio value and the preset size value in the ready-made tray selection step (S350). At this time, if the calculated ratio value is less than the third value, the shape of the mandibular tray is tapered, and if the calculated ratio value is greater than the third value and smaller than the fourth value, the shape of the mandibular tray is set to oval. If it is greater than this fourth value, the shape of the mandible tray is pre-classified as square, and the size of the mandible tray is selected from the pre-classified sizes.

Figure 4 is a diagram for explaining an example of selecting the size of an upper jaw tray according to an embodiment of the present invention.

Referring to Figures 1 and 4, the edentulous impression taking device 1 sets two landmarks in the maxillary scan data and selects the size of the maxillary ready-made tray using the two set landmarks. For example, the size of the ready-made tray is selected by measuring the distance (B1) between the maxillary tuberosities on both sides of the maxilla. The edentulous impression taking device 1 may measure the distance B1, but the user may also input the measured value.

The edentulous impression taking device (1) is pre-classified into Small if B1 ≤ 45mm, Medium if 45mm < B1 < 51mm, Large if 51mm ≤ B1, etc., according to the distance (B1) between the maxillary tuberosities on both sides, and used for maxillary trays. You can choose from pre-sorted sizes. The size value is only applied as an example and can be changed according to user settings, and the size classification can be changed in various ways, such as 4 to 5 types instead of 3 types.

Figure 5 is a diagram for explaining an example of selecting the size of a lower tray according to an embodiment of the present invention.

Referring to Figures 1 and 5, the edentulous impression taking device 1 selects the size of the ready-made tray using two landmarks in the mandibular scan data. For example, select the size of the ready-made tray by measuring the distance (B2) between the retromolar pad mesials on both sides of the lower jaw. The edentulous impression taking device 1 may measure the distance B2, but the user may also input the measured value.

The edentulous impression taking device (1) can select the size of the tray according to the distance (B2) between the two retromolar pad mesials: Small if B2 ≤ 53mm, Medium if 53mm < B2 < 59mm, Large if 59mm ≤ B2. The size value is only applied as an example and can be changed according to user settings, and the size classification can be changed in various ways, such as 4 to 5 types instead of 3 types.

Figure 6 is a diagram for explaining an example of selecting the shape of an upper jaw tray according to an embodiment of the present invention.

Referring to Figures 1 and 6, the edentulous impression taking device 1 selects the shape of the maxillary tray using the distance between the two Canine Prominences of the maxilla (A1) and the distance between the Maxillary Tuberosities on both sides (B1). At this time, the shape of the maxillary tray can be selected according to the ratio value (A1/B1) divided by the distance between the two canine prominences of the maxilla (A1) by the distance between the maxillary tuberosities on both sides (B1). For example, depending on the ratio value (A1/B1), if A1/B1≤0.46mm, it is tapered, if 0.46mm<A1/B1<0.68mm, it is oval, if 0.68mm≤A1/B1, it is square, etc. By sorting, the size of the maxillary tray can be selected from among the pre-sorted sizes. The shape value is only applied as an example and can be changed by user settings, and the shape classification can also be changed in various ways by setting a standard value.

Figure 7 is a diagram for explaining an example of selecting the shape of a lower tray according to an embodiment of the present invention.

Referring to Figures 1 and 7, the edentulous impression taking device 1 selects the shape of the mandibular tray using the distance between the canine prominences on both sides of the mandible (A2) and the distance between the retromolar pad mesials on both sides (B2). At this time, the shape of the mandibular tray can be selected according to the ratio value (A2/B2) divided by the distance between the two canine prominences of the mandible (A2) by the distance between the two retromolar pad mesials (B2). For example, according to the ratio value (A2/B2), if A2/B2≤0.48mm, it is pre-classified as tapered, if 0.48mm<A2/B2<0.63mm, as oval, and if 0.63mm≤A2/B2, as square. Therefore, the size of the mandibular tray can be selected from among pre-classified sizes. The shape value is only applied as an example and can be changed by user settings, and the shape classification can also be changed in various ways by setting a standard value.

Figure 8 is a diagram illustrating examples of the shapes of the upper and lower trays selected according to an embodiment of the present invention.

Referring to FIGS. 1 and 8 , the edentulous impression taking device 1 may have trays for the upper and lower jaw in a tapered, oval, or square shape depending on the shape of the maxillary and mandibular arches. Examples of selecting the shape of the upper and lower trays are as described above with reference to FIGS. 6 and 7.

Figure 9 is a diagram illustrating an example of selecting an occlusal agent according to an embodiment of the present invention.

Referring to Figures 1 and 9, the edentulous impression taking device 1 selects the maxillary occlusal agent 90-1 and the mandibular occlusal agent 90-2 in consideration of at least one of the patient's arch shape and vertical dimension. .

The maxillary occlusal device (90-1) consists of a base (910-2) and an occlusal portion (920-2) formed on the entire upper part of the base (910-2), and the height of the occlusal portion (920-2) is adjusted. , It is connected to the maxillary tray through the attachment part. The material of the articulation portion 920-2 may be a soft material, a softenable material, a thermoplastic material, etc., and may be, for example, wax, but is not limited thereto.

The mandibular occlusal agent 90-2 is composed of a base 910-1 and a plurality of occlusal markers 920-1 formed on at least a portion of the upper part of the base 910-1. The height is adjusted and connected to the mandibular tray through the attachment part.

In the case of the mandibular articulator 90-2, the height of the mandibular articulator 90-2 can be adjusted using a plurality of occlusal markers 920-1 formed on at least a portion of the upper part of the base 910-1. The plurality of occlusal markers 920-1 may be in the form of a cone, cylinder, or polygonal block. Additionally, the occlusal marker may be made of a material such as a softenable material or a thermoplastic material, but is not limited thereto.

Meanwhile, the lower jaw base 910-1 may be made of a hard material such as resin, and the upper jaw base 910-2 may also be made of a hard material such as resin.

So far, the present invention has been examined focusing on its embodiments. A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

Claims (15)

Obtaining a plurality of ready-made trays of different shapes and sizes;
Obtaining scan data of an edentulous patient;
Setting a plurality of landmarks in the patient's scan data;
determining the shape and size of the patient's dental arch using the plurality of landmarks set; and
selecting a ready-made tray corresponding to the determined arch shape and size from among the plurality of ready-made trays;
An edentulous impression-taking method comprising: The method of claim 1, wherein setting the landmark includes
An edentulous impression-taking method characterized by setting the Maxillary Tuberosities on both sides of the maxilla as landmarks to select the size of the maxillary tray. The method of claim 1, wherein setting the landmark includes
An edentulous impression-taking method characterized by setting the retromolar pad mesial on both sides of the mandible as landmarks to select the size of the mandibular tray. The method of claim 1, wherein the step of determining the shape and size of the patient's dental arch includes
Determine the size of the maxillary arch by calculating the distance between the Maxillary Tuberosities on both sides of the maxilla.
Steps for choosing a ready-made tray
An edentulous impression-taking method characterized by selecting the size of the maxillary tray by comparing the calculated distance between the maxillary tuberosities on both sides of the maxilla and a preset size value. The method of claim 1, wherein the step of determining the shape and size of the patient's dental arch includes
Determine the size of the mandibular arch by calculating the distance between the retromolar pad mesial on both sides of the mandible.
Steps for choosing a ready-made tray
An edentulous impression-taking method characterized by selecting the size of the mandible tray by comparing the calculated distance between the retromolar pad mesials on both sides of the mandible and a preset size value. The method of claim 1, wherein setting the landmark includes
An edentulous impression-taking method characterized by setting the Canine Prominence on both sides of the maxilla and Maxillary Tuberosity on both sides as landmarks to select the shape of the maxillary tray. The method of claim 1, wherein setting the landmark includes
An edentulous impression-taking method characterized by setting the Canine Prominence on both sides of the mandible and the Retromolar Pad Mesial on both sides as landmarks to select the shape of the mandibular tray. The method of claim 1, wherein the step of determining the shape and size of the patient's dental arch includes
The arch shape of the maxilla is determined by calculating the ratio value divided by the distance between the Canine Prominences on both sides of the maxilla by the distance between the Maxillary Tuberosities on both sides.
Steps for choosing a ready-made tray
An edentulous impression-making method characterized by selecting the shape of the maxillary tray by comparing the calculated ratio value and a preset size value. The method of claim 8, wherein selecting a ready-made tray comprises
If the calculated ratio value is smaller than the first value, the shape of the maxillary tray is tapered. If the calculated ratio value is greater than the first value and smaller than the second value, the shape of the maxillary tray is set to elliptical. The calculated ratio value is set to elliptical. If the value is greater than 2, the edentulous impression-taking method is characterized in that the shape of the maxillary tray is pre-classified as square, and the size of the maxillary tray is selected from the pre-classified sizes. The method of claim 1, wherein the step of determining the shape and size of the patient's dental arch includes
The arch shape of the mandible is determined by calculating the ratio value divided by the distance between the two Canine Prominences of the mandible by the distance between the two Retromolar Pad Mesials,
Steps for choosing a ready-made tray
An edentulous impression-making method characterized by selecting the shape of the mandibular tray by comparing the calculated ratio value and a preset size value. 11. The method of claim 10, wherein selecting a ready-made tray comprises
If the calculated ratio value is less than the third value, the shape of the mandibular tray is set to tapered. If the calculated ratio value is greater than the third value and smaller than the fourth value, the shape of the mandibular tray is set to oval. The calculated ratio value is set to elliptical. If the value is greater than 4, the edentulous impression-taking method is characterized in that the shape of the mandibular tray is pre-classified as square, and the size of the mandibular tray is selected from among the pre-classified sizes. According to claim 1, the edentulous impression taking method is
Taking an impression of the patient using a selected ready-made tray;
Selecting a maxillary occlusal agent and a mandibular occlusal agent corresponding to the vertical dimension height of the patient;
combining the selected maxillary tray and the maxillary articulator and the selected mandibular tray and the mandibular articulator;
acquiring mandibular movement scan data by scanning the patient's mandibular movement using the combined tray and articulator;
Obtaining occlusion scan data based on occlusion information measured in the patient's mouth; and
Registering the occlusion scan data and the mandibular movement scan data;
An edentulous impression-taking method further comprising: a data acquisition unit that acquires scan data of an edentulous patient and a plurality of ready-made trays of different shapes and sizes;
After setting a plurality of landmarks in the scan data of the patient and determining the shape and size of the patient's dental arch using the plurality of landmarks, from among the plurality of ready-made trays, a ready-made tray corresponding to the determined arch shape and size is selected. A control unit that selects a tray; and
an output unit displaying the selected ready-made tray;
An edentulous impression-taking device comprising: An upper tray and a lower tray having a size and shape corresponding to the size and shape of the patient's arch and including a predetermined attachment portion; and
A mandibular articulator consisting of a base and an occlusal marker formed on at least a portion of the upper part of the base to adjust the height of the occlusal marker and coupled to the mandibular tray through the coupling portion; and
An upper articulator consisting of a base and an articulating part formed on the entire upper part of the base to adjust the height of the articulating part and coupled to the upper tray through the coupling part;
A tray complex comprising: The method of claim 14, wherein the upper tray and the lower tray are
A tray complex whose size and shape are determined through distance values using a plurality of landmarks respectively set in the scan data of the upper and lower jaw.