JP2020103449A - Dental state determination device and dental state determination method - Google Patents

Abstract

To provide a device that can output the dental age of a user with high accuracy.SOLUTION: A dental state determination device 1 according to an embodiment of the present invention comprises a relation acquisition unit 154 for acquiring a relation between a state value indicating the state of teeth of a person in a predetermined group and the age of the person, a state value acquisition unit 153 for acquiring the state value of teeth of a user, a calculation unit 155 for calculating the dental age of the user corresponding to the state value acquired by the state value acquisition unit 153 on the basis of the relation acquired by the relation acquisition unit 154, and an output unit 156 for outputting the dental age calculated by the calculation unit 155.SELECTED DRAWING: Figure 2

Description

The present invention relates to a tooth condition determination device and a tooth condition determination method for determining a tooth condition.

The condition of human teeth is deteriorated by tooth decay (dental caries) and periodontal disease. Although dental treatment can stop the progress of tooth deterioration, a tooth that has once deteriorated basically does not return to its original state. The degree of deterioration of the tooth can be expressed as the age of the tooth (hereinafter referred to as “tooth age”) separately from the actual human age. Patent Document 1 describes a system for calculating the tooth age of a patient by summing the points given to each tooth of the patient.

JP, 2002-224147, A

In the system described in Patent Document 1, the practitioner looks at and evaluates each tooth of the patient, and gives a score to each tooth. Therefore, there is a problem in that the accuracy of the calculated tooth age is low because the score varies from one practitioner to another.

The present invention has been made in view of these points, and an object thereof is to provide a tooth condition determination device and a tooth condition determination method that can output the user's tooth age with high accuracy.

The tooth condition determining apparatus according to the first aspect of the present invention includes a relationship acquiring unit that acquires a relationship between a state value representing a human tooth condition in a predetermined group and the human age, and the user tooth A state value acquisition unit that acquires a state value, and a calculation unit that calculates the tooth age of the user corresponding to the state value acquired by the state value acquisition unit, based on the relationship acquired by the relationship acquisition unit, An output unit that outputs the tooth age calculated by the calculation unit.

The relationship acquisition unit may acquire, as the relationship, an approximate expression generated using the state value and the age in the group.

The relationship acquisition unit acquires the relationship between the number of DMF teeth indicating the total number of untreated teeth, lost teeth and treated teeth, and the age of the human, and the state value acquisition unit calculates the number of DMF teeth. , May be acquired as the state value.

The relationship acquisition unit includes a first relationship between the number of DMF teeth and the age of the human, a second relationship between the number of lost teeth and the age of the human, a number of crowns and the age of the human. And at least two of the third relationship between the state value acquisition unit, the state value acquisition unit acquires at least two of the number of DMF teeth, the number of lost teeth and the number of crowns as the state value, The calculation unit, based on at least two of the first relationship, the second relationship, and the third relationship acquired by the relationship acquisition unit, the number of DMF teeth acquired by the state value acquisition unit, the missing tooth The tooth age corresponding to at least two of the number and the number of crowns may be calculated.

The calculation unit, based on the first relationship, the second relationship, and the third relationship acquired by the relationship acquisition unit, the number of DMF teeth acquired by the state value acquisition unit, the number of lost teeth, and the crown. The tooth age corresponding to the number may be calculated.

The calculation unit may calculate the tooth age by setting different weights for at least two of the number of DMF teeth, the number of lost teeth, and the number of crowns acquired by the state value acquisition unit.

The calculator may determine the weight of at least two of the number of DMF teeth, the number of lost teeth, and the number of crowns acquired by the state value acquisition unit, based on the age of the user.

The output unit may output a predetermined notification to the user when the tooth age is larger than the age of the user.

The relationship acquisition unit acquires the relationship in the first group, and the calculation unit calculates the state value of the user belonging to a second group different from the first group based on the relationship in the first group. The corresponding tooth age in the first population may be calculated.

The relationship acquisition unit acquires a correction value for converting a tooth age in the first group into a tooth age in a second group different from the first group, and the relationship in the second group, and the calculation unit Calculates the tooth age in the second group corresponding to the state value of the user belonging to the second group based on the relationship in the second group, and further adds the correction value in the first group. Alternatively, the tooth age in the first population may be calculated by multiplying.

In the tooth condition determination method according to the second aspect of the present invention, a processor obtains a relationship between a state value representing a human tooth condition in a predetermined group and the human age, and Acquiring the state value, and calculating the tooth age of the user corresponding to the state value acquired by the step of acquiring the state value, based on the relationship acquired by the step of acquiring the relationship, And outputting the tooth age calculated by the calculating step.

According to the present invention, it is possible to output the tooth age of the user with high accuracy.

It is a schematic diagram of the tooth condition determination system according to the embodiment. It is a block diagram of a tooth condition determination system according to an embodiment. It is a schematic diagram of the approximate expression of the relationship between a state value and age. FIG. 7 is a front view of a display unit displaying a screen for receiving an input of a state value. It is a front view of the information terminal displaying the screen showing the user's tooth age. It is a figure showing the flow chart of the tooth condition judging method which the tooth condition judging system concerning an embodiment performs. It is a schematic diagram of the tooth condition determination method which the tooth condition determination system which concerns on a modification performs.

[Outline of tooth condition determination system S]
FIG. 1 is a schematic diagram of a tooth condition determination system S according to this embodiment. The tooth condition determination system S includes a tooth condition determination device 1 and an information terminal 2. The tooth condition determination system S may include devices such as other servers and terminals.

The information terminal 2 is a computer that displays information. The information terminal 2 is, for example, a personal computer, a mobile terminal such as a smartphone or a tablet terminal. The information terminal 2 includes a display device capable of displaying information, such as a liquid crystal display. The information terminal 2 can communicate with the tooth condition determination device 1 via the network.

The tooth condition determination device 1 is a computer that determines a tooth condition of a user and outputs information. The user is a person who receives the determination of the tooth condition. The tooth condition determination device 1 can communicate with the information terminal 2 via the network.

The tooth condition determination device 1 includes an imaging unit 11, a display unit 12, and an operation unit 13. The tooth condition determination device 1 may be operated by an operator different from the user (for example, a medical staff such as a dentist), or may be operated by the user himself.

The imaging unit 11 includes an imaging device (camera) that images the user's teeth (oral cavity) and outputs an image. Further, the imaging unit 11 may include an intraoral scanner that images the inside of the oral cavity of the user and generates a three-dimensional image. The imaging unit 11 may be directly connected to the tooth condition determination device 1 or may be connected via a network.

The display unit 12 includes a display device capable of displaying information, such as a liquid crystal display. The operation unit 13 includes an operation device such as a keyboard and a mouse that can accept a human operation. The display unit 12 and the operation unit 13 may be integrally configured by using a touch screen capable of detecting the position of human contact as the display unit 12. Like the image pickup unit 11, the display unit 12 and the operation unit 13 may be directly connected to the tooth condition determination device 1 or may be connected via a network.

The tooth condition determination device 1 stores in advance the relationship between the state value representing the human tooth condition in a predetermined group (for example, Japan) and the human age. The state value includes, for example, the number of DMF (Decayed, Missing, Filled) teeth, the number of lost teeth, and the number of crowns, which will be described later. The relationship between the state value and the age is, for example, an approximate expression generated from the statistical data of the state value and the age.

Then, the tooth condition determination apparatus 1 calculates the tooth age of the user by acquiring the tooth condition value of the determination target user and applying it to the approximate expression generated from the statistical data stored in advance.

As described above, the tooth condition determination system S digitizes the user's tooth age in the group based on the approximate expression generated using the statistical data and the state value that objectively represents the user's tooth condition. Therefore, the tooth condition determination system S can suppress variations in the calculated tooth age of the user and can output with high accuracy.

[Configuration of tooth condition determination system S]
FIG. 2 is a block diagram of the tooth condition determination system S according to this embodiment. In FIG. 2, arrows indicate main data flows, and there may be data flows not shown in FIG. In FIG. 2, each block does not have a hardware (device) unit configuration but a functional unit configuration. Therefore, the blocks shown in FIG. 2 may be implemented in a single device, or may be implemented separately in multiple devices. Data transfer between blocks may be performed via any means such as a data bus, a network, and a portable storage medium.

The tooth condition determination device 1 has a storage unit 14 and a control unit 15 in addition to the above-described image pickup unit 11, display unit 12, and operation unit 13. The storage unit 14 includes a state value storage unit 141 and a relationship storage unit 142. The control unit 15 includes an image acquisition unit 151, a state value reception unit 152, a state value acquisition unit 153, a relationship acquisition unit 154, a calculation unit 155, and an output unit 156.

The storage unit 14 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, and the like. The storage unit 14 stores a program executed by the control unit 15 in advance. The storage unit 14 may be provided outside the tooth condition determination apparatus 1, and in that case, data may be exchanged with the control unit 15 via the network.

The state value storage unit 141 stores the state value of the tooth of the user to be determined. The relationship storage unit 142 stores the relationship between the state value indicating the state of human teeth in a predetermined group and the human age. The state value storage unit 141 and the relationship storage unit 142 may each be a storage area on the storage unit 14, or may be a database configured on the storage unit 14.

The control unit 15 is, for example, a processor such as a CPU (Central Processing Unit), and executes the program stored in the storage unit 14 to thereby acquire the image acquisition unit 151, the state value reception unit 152, the state value acquisition unit 153, and the relationship. It functions as an acquisition unit 154, a calculation unit 155, and an output unit 156. At least a part of the function of the control unit 15 may be performed by an electric circuit. Further, at least a part of the functions of the control unit 15 may be executed by a program executed via the network.

The tooth condition determination system S according to this embodiment is not limited to the specific configuration shown in FIG. The tooth condition determination device 1 and the information terminal 2 are not limited to one device, respectively, and may be configured by connecting two or more physically separated devices by wire or wirelessly.

[Explanation of tooth condition determination method]
The tooth condition determination method executed by the tooth condition determination system S according to this embodiment will be described below. The relationship storage unit 142 stores in advance the relationship between the state value representing the state of human teeth in a predetermined group and the human age. The state value includes, for example, the number of DMF teeth, the number of lost teeth, and the number of crowns.

The number of DMF teeth is the number of untreated teeth (ie, untreated carious teeth), missing teeth (ie, extracted teeth), and filled teeth (ie, filled teeth) among human teeth. The total number of teeth corresponding to any of the treated caries). The number of missing teeth is the number of missing teeth. The number of crowns is the number of teeth to which a crown is applied among the treated teeth.

The relationship between the state value and the age is, for example, an approximate expression generated from the statistical data of the state value and the age. The statistical data is, for example, data representing a correlation between an age (or an age group) aggregated in a predetermined group and an average value of the number of DMF teeth, the number of lost teeth, and the number of crowns of a human of that age. The approximate expression is a mathematical expression that represents a straight line or a curve that is generated by using a known analysis method and that is close to the statistical data.

FIG. 3A to FIG. 3C are schematic diagrams of approximate expressions of the relationship between the state value and the age. FIG. 3A shows an approximate expression A (first relationship) of the relationship between the number of DMF teeth and age. In the example of FIG. 3A, the approximate expression A is represented by the following expression (1).

式（１）において、ｙ１は歯年齢であり、ｘはＤＭＦ歯数である。

In the formula (1), y1 is the tooth age and x is the number of DMF teeth.

FIG. 3B illustrates an approximate expression B (second relationship) of the relationship between the number of lost teeth and age. In the example of FIG. 3B, the approximate expression B is represented by the following expression (2).

式（２）において、ｙ２は歯年齢であり、ｘは喪失歯数である。

In formula (2), y2 is the tooth age and x is the number of lost teeth.

FIG.3(c) represents the approximate expression C (3rd relationship) of the relationship between the number of crowns and age. In the example of FIG. 3C, the approximate expression C is represented by the following expression (3).

式（３）において、ｙ３は歯年齢であり、ｘはクラウン数である。

In the formula (3), y3 is the tooth age and x is the number of crowns.

The approximation formula A, the approximation formula B, and the approximation formula C shown in the formulas (1) to (3) are examples, and are generated based on statistical data collected in a predetermined group. The relationship storage unit 142 stores in advance an approximate expression A, an approximate expression B, and an approximate expression C as the relationship between the state value and the age. Alternatively, the relationship storage unit 142 stores the statistical data of the state value and the age in advance as the relationship between the state value and the age, and the control unit 15 uses the approximate expression A and the approximate expression B based on the statistical data. And the approximate expression C may be generated.

When the user receives the tooth condition determination by the tooth condition determination system S, the tooth condition determination device 1 uses the image capturing unit 11 to capture an image of the user's tooth (oral cavity). An operator different from the user may operate the imaging unit 11 to image the user's teeth, or the user himself/herself may operate the imaging unit 11 to image the user's teeth. The imaging unit 11 inputs the captured image to the tooth condition determination device 1. Further, the information terminal 2 included in the user may capture an image of the user's tooth by the image capturing unit included in the information terminal 2 and transmit the captured image to the tooth condition determination device 1.

The image acquisition unit 151 acquires the image of the user's tooth captured by the imaging unit 11 in association with the identification information (user ID) for identifying the user, and displays the image on the display unit 12 that receives the input of the state value. Display it. At this time, the image acquisition unit 151 may acquire the result of visual inspection of the user's tooth by a dentist or the like and display the result together with the image. In this case, the result of the visual inspection is input to the tooth condition determination device 1 together with the image.

FIG. 4 is a front view of the display unit 12 displaying a screen for receiving the input of the state value. The screen for accepting the input of the state value includes a user's tooth image 121, an input field 122, and a send button 123. Although the user ID is omitted in the screen of FIG. 4, it may be displayed. The input field 122 includes a field in which the number of DMF teeth, the number of lost teeth, and the number of crowns can be input as state values. Further, the input field 122 may include a field in which a tooth arrangement (for example, presence or absence of double teeth, opposite occlusion, open front bite, etc.) can be input as a state value. The input field 122 may be either a free entry field or a selection field. The send button 123 is a virtual button (icon) that a human can press.

The operator (for example, a medical worker such as a dentist) refers to the image 121 of the user's tooth displayed on the display unit 12 to determine the state value including the number of DMF teeth, the number of lost teeth, the number of crowns, and the tooth alignment. , Is input to the input field 122 using the operation unit 13. Then, the operator presses the send button 123. When the operator presses the send button 123, the state value accepting unit 152 accepts the state value entered in the input field 122 on the screen for accepting the input of the state value (FIG. 4) and, together with the image acquired by the image acquiring unit 151, , And stores it in the state value storage unit 141 in association with the user ID.

In the example of FIG. 4, the operator determines the state value by referring to the image, but the tooth condition determination device 1 may automatically determine the state value based on the image. In this case, the storage unit 14 stores a machine learning model for determining the state value based on the tooth image, for example. The machine learning model inputs a tooth image, and outputs a state value determined based on the image. The machine learning model is generated in advance by executing a known machine learning method using a plurality of images, and is stored in the storage unit 14.

The state value receiving unit 152 receives the state value output by the machine learning model by inputting the image acquired by the image acquiring unit 151 into the machine learning model stored in the storage unit 14, and the image acquiring unit 151 The state value storage unit 141 stores the acquired image in association with the user ID.

When the condition for the tooth condition determination device 1 to start the determination of the user's tooth condition is satisfied, the state value acquisition unit 153 acquires the state value stored in the state value storage unit 141, and the relationship acquisition unit 154 acquires the relationship (approximate expression) between the state value and the age stored in the relationship storage unit 142. The condition for the tooth condition determination device 1 to start the determination of the user's tooth condition may be, for example, that the state value reception unit 152 has received the input of the state value from the operation unit 13, and the user or the operator may It may be that a predetermined operation (different from the input of the above state value) is performed in the tooth condition determination device 1 or the information terminal 2.

The calculation unit 155 calculates the state value (that is, the number of DMF teeth, the number of lost teeth, and the number of crowns) acquired by the state value acquisition unit 153 based on the relationship between the state value acquired by the relationship acquisition unit 154 and the age. Calculate the corresponding tooth age of the user.

Specifically, the calculation unit 155 may calculate the tooth age using any one of the above-described approximate expression A, approximate expression B, and approximate expression C. In this case, the calculation unit 155 substitutes the number of DMF teeth into the approximation formula A, substitutes the number of lost teeth into the approximation formula B, or approximates formula C based on the state value acquired by the state value acquisition unit 153. The tooth age is calculated by substituting the number of crowns into.

When only one of the approximation formula A, the approximation formula B, and the approximation formula C is used, the calculation unit 155 preferably calculates the tooth age by the approximation formula A using the DMF tooth number. For example, in the approximate expression B using the number of lost teeth, it is difficult to calculate the tooth age especially for young users, because a young person under the age of 40 often has zero lost teeth. In addition, the crown often transitions to a missing tooth in elderly people over 60 years old, and thus the approximate expression C using the number of crowns may not correspond well to age. On the other hand, the approximate expression A using the number of DMF teeth reflects not only the number of lost teeth but also the number of untreated teeth and the number of treated teeth, and therefore the tooth with a relatively high accuracy for a wide range of users. Age can be calculated.

As another method, the calculation unit 155 calculates the tooth age using at least two of the above-described approximate expression A, approximate expression B, and approximate expression C, and specifies the maximum value or average value thereof as the tooth age. May be.

If only one of the approximate expression A, the approximate expression B, and the approximate expression C is used, it is possible to estimate a tooth age having a low value of any of the DMF number of teeth, the number of lost teeth and the number of crowns to be lower than the actual value. It may end up. On the other hand, the calculation unit 155 specifies the maximum value or the average value of the tooth age calculated by two or more of the approximate expression A, the approximate expression B, and the approximate expression C, so that the tooth age is lower than the actual value. It is possible to suppress the estimation.

In this case, the calculation unit 155 preferably calculates the tooth age using at least one of the approximate expression B and the approximate expression C in addition to the approximate expression A. The approximate expression A using the DMF number of teeth can calculate the tooth age with relatively high accuracy for a wide range of users as described above, and in addition, the approximate expression B or the approximate expression C using the number of lost teeth or the number of crowns is used. By doing so, the accuracy can be further improved.

It is further desirable that the calculation unit 155 calculate the tooth age using all of the approximate expression A, the approximate expression B, and the approximate expression C. As a result, it is possible to calculate the tooth age with higher accuracy for various oral conditions of users of various ages, from young to old.

When using the average value of the tooth age calculated using at least two of the approximate expression A, the approximate expression B, and the approximate expression C, a weighted average in which different weights are set for the number of DMF teeth, the number of missing teeth, and the number of crowns May be used. In this case, the tooth age is represented by the following equation (4).

In Expression (4), y is the tooth age calculated by the weighted average. y1, y2, and y3 are tooth ages calculated using the number of DMF teeth, the number of lost teeth, and the number of crowns, respectively. α, β, and γ are weights set for the number of DMF teeth, the number of lost teeth, and the number of crowns, respectively.

Since the number of DMF teeth is the total number of untreated teeth, lost teeth and treated teeth, the influence of each term cannot be adjusted. On the other hand, the calculation unit 155 adjusts the influence of each term on the calculated tooth age by combining the number of lost teeth and the number of crowns with the number of DMF teeth and adjusting the respective weights to improve accuracy. it can.

The weights of the number of DMF teeth, the number of lost teeth, and the number of crowns may be determined based on the age of the user. For example, as described above, in elderly people over 60 years old, the number of crowns often does not correspond to the age because the crown often transitions to a missing tooth. Therefore, when the age of the user is equal to or larger than the predetermined value, the calculation unit 155 may determine to increase the weight of the lost tooth and decrease the weight of the number of crowns as compared with the case where the age is less than the predetermined value. Thereby, the calculation unit 155 can appropriately adjust the influence of each of the number of DMF teeth, the number of lost teeth, and the number of crowns on the tooth age according to the actual age of the user.

Further, the calculation unit 155 may correct the calculated tooth age based on the teeth of the user indicated by the state value acquired by the state value acquisition unit 153. Specifically, the calculation unit 155 determines the number of DMF teeth, the number of lost teeth, and the number of crowns when the user's tooth arrangement indicated by the state value acquired by the state value acquisition unit 153 satisfies a predetermined condition (for example, there are double teeth). A predetermined correction value may be added (for example, 10 years old is added) or multiplied to the tooth age calculated based on (for example, 1.2 times). If the user's teeth are not aligned well, it tends to be difficult to maintain the user's tooth condition. Therefore, the calculation unit 155 can provide the user with a more accurate tooth age by correcting the tooth age based on the tooth and the tooth age.

The output unit 156 outputs the user's tooth age calculated by the calculation unit 155 to the information terminal 2. The output unit 156 may output the tooth age of the user by other methods such as printing by a printer and voice output by a speaker. The information output by the output unit 156 includes the image acquired by the image acquisition unit 151, the tooth age of the user calculated by the calculation unit 155, and recommendation information related to the tooth condition of the user.

For example, the output unit 156 may output, when the tooth age of the user calculated by the calculation unit 155 is equal to or greater than a predetermined value, the name of a clinic that is good at preventive dentistry as recommendation information. In addition, the output unit 156 outputs, when the user's tooth arrangement indicated by the state value acquired by the state value acquisition unit 153 satisfies a predetermined condition (for example, that there are double teeth), the name of the clinic who is good at correcting teeth as recommendation information. You may. Further, the output unit 156 may output the product name related to the state value acquired by the state value acquisition unit 153 as recommendation information. The relationship between the tooth condition of the user and the recommendation information may be stored in the storage unit 14 in advance.

The output unit 156 transmits display information for displaying the output information to the information terminal 2. The information terminal 2 displays a screen showing the user's tooth age on the display unit based on the display information received from the tooth condition determination device 1. FIG. 5 is a front view of the information terminal 2 displaying a screen showing the user's tooth age.

The screen showing the user's tooth age includes the user's tooth image 21, the user's tooth age 22, and recommendation information 23. The image 21 of the user's tooth is an image of the user's tooth acquired by the tooth condition determination device 1. The user's tooth age 22 is the user's tooth age calculated by the tooth condition determination device 1. The user's tooth age 22 may also include the user's actual age. The recommendation information 23 is recommendation information (a clinic name or a product name) determined by the tooth condition determination device 1. Thereby, the tooth condition determination device 1 can notify the user of the tooth condition, and can also provide the user with means recommended for improving the user's tooth condition.

Furthermore, when the tooth age of the user calculated by the calculation unit 155 is higher than the actual age, the output unit 156 transmits a notification to that effect to the information terminal 2. The information terminal 2 displays the notification 24 received from the tooth condition determination device 1 on the display unit. Thereby, the tooth condition determination apparatus 1 can positively inform the user that the tooth age of the user is older than the actual age.

[Flow chart of tooth condition determination method]
FIG. 6 is a diagram showing a flowchart of the tooth condition determination method executed by the tooth condition determination system S according to this embodiment. When the user receives the tooth condition determination by the tooth condition determination system S, the tooth condition determination device 1 uses the image capturing unit 11 to capture an image of the user's tooth (oral cavity). (S11). The image acquisition unit 151 acquires the image of the user's tooth captured by the imaging unit 11 in association with the user ID, and displays the image on the display unit 12 that accepts the input of the state value.

The state value receiving unit 152 receives the state value input on the screen for receiving the input of the state value, and stores it together with the image acquired by the image acquisition unit 151 in the state value storage unit 141 in association with the user ID (S12).

When the condition for starting the determination of the tooth condition of the user is not satisfied (NO in S13), the tooth condition determining apparatus 1 waits until the condition for starting the determination of the tooth condition of the user is satisfied. When the condition for starting the determination of the tooth condition of the user is satisfied (YES in S13), the state value acquisition unit 153 acquires the state value stored in the state value storage unit 141 (S14), and the relation The acquisition unit 154 acquires the relationship (approximate expression) between the state value and the age stored in the relationship storage unit 142 (S15).

The calculation unit 155 calculates the state value (that is, the number of DMF teeth, the number of lost teeth, and the number of crowns) acquired by the state value acquisition unit 153 based on the relationship between the state value acquired by the relationship acquisition unit 154 and the age. The corresponding tooth age of the user is calculated (S16). The output unit 156 outputs the user's tooth age calculated by the calculation unit 155 to the information terminal 2 (S17).

[Effect of Embodiment]
According to the tooth condition determination system S according to the present embodiment, the tooth condition determination device 1 is arranged between the state value representing the condition of the human teeth in the predetermined group generated using the statistical data and the human age. The relationship (approximate expression) is acquired, and the tooth age corresponding to the state value that objectively represents the state of the user's tooth is calculated based on the acquired relationship. Therefore, the tooth condition determination system S can suppress variations in the calculated tooth age of the user and can output with high accuracy.

[Modification]
In the above embodiment, the tooth condition determination system S calculates the tooth ages of the users belonging to one group based on the relationship between the state value and the age in the group. On the other hand, the tooth condition determination system S according to the present modification calculates the tooth age of the user belonging to a certain group based on the statistical data of a group different from the group.

FIG. 7 is a schematic diagram of a tooth condition determination method executed by the tooth condition determination system S according to this modification. In FIG. 7, for example, the first group D is a specific overseas country, and the second group E is Japan. The relationship storage unit 142 stores in advance the relationship between the state value representing the state of human teeth in the first group D and the human age. The relationship between the state value and the age is, for example, the above-described approximate expression A, approximate expression B, and approximate expression C.

When the tooth condition determination device 1 starts the determination of the tooth condition of the users belonging to the second group E, the state value acquisition unit 153 stores the state values of the users belonging to the second group E stored in the state value storage unit 141. After acquiring the state value, the relationship acquisition unit 154 acquires the relationship between the state value and the age in the first group D, which is stored in the relationship storage unit 142.

The calculation unit 155 corresponds to the state value of the users belonging to the second group E acquired by the state value acquisition unit 153 based on the relationship between the state value and the age in the first group D acquired by the relationship acquisition unit 154. Yes, the user's tooth age is calculated. Thereby, the calculation unit 155 can calculate the tooth age of the users belonging to the second group E in the first group D.

As another method, the calculation unit 155 calculates the tooth age in the first group D by correcting the tooth age calculated in the second group E to which the user belongs using the correction value in the first group D. Good. Specifically, the relationship storage unit 142 stores in advance a correction value for converting the tooth age of the second group E into the age of the first group D.

When the tooth condition determination device 1 starts the determination of the tooth condition of the users belonging to the second group E, the state value acquisition unit 153 stores the state values of the users belonging to the second group E stored in the state value storage unit 141. The state value is acquired, and the relationship acquisition unit 154 acquires the relationship between the state value and the age in the second group E, which is stored in the relationship storage unit 142.

The calculation unit 155 corresponds to the state value of the user belonging to the second group E acquired by the state value acquisition unit 153, based on the relationship between the state value and the age in the second group E acquired by the relationship acquisition unit 154. Then, the tooth age of the user in the second group E is calculated. Further, the calculation unit 155 adds (for example, 10 years old) or multiplies (for example, 1.2 times) to the tooth age in the second group E by the correction value stored in the relationship storage unit 142. Thereby, the calculation unit 155 can calculate the tooth age of the users belonging to the second group E in the first group D.

As described above, the tooth condition determination system S according to the present modification calculates the tooth age in another country where tooth care is advanced, for example, based on the state value of the Japanese user. As a result, the user can grasp the condition of his/her own tooth compared with the statistical data of other countries.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. is there. For example, the specific embodiment of device distribution/integration is not limited to the above embodiment, and all or part of the device may be functionally or physically distributed/integrated in arbitrary units. You can Further, a new embodiment that occurs due to an arbitrary combination of a plurality of embodiments is also included in the embodiment of the present invention. The effect of the new embodiment produced by the combination also has the effect of the original embodiment.

The processor of the tooth condition determination device 1 is a main body of each step (process) included in the tooth condition determination method shown in FIG. That is, the processor of the tooth condition determining apparatus 1 reads a program for executing the tooth condition determining method shown in FIG. 6 from the storage unit, and executes the program to control each unit of the tooth condition determining apparatus 1. The tooth condition determination method shown in FIG. 6 is executed. The steps included in the tooth condition determination method shown in FIG. 6 may be partially omitted, the order of the steps may be changed, and a plurality of steps may be performed in parallel.

S tooth condition determination system 1 tooth condition determination device 15 control unit 153 state value acquisition unit 154 relationship acquisition unit 155 calculation unit 156 output unit

Claims (11)

A relationship acquisition unit that acquires a relationship between a state value representing the state of human teeth in a predetermined group and the human age,
A state value acquisition unit that acquires the state value of the user's teeth,
Based on the relationship acquired by the relationship acquisition unit, a calculation unit that calculates the tooth age of the user corresponding to the state value acquired by the state value acquisition unit,
An output unit that outputs the tooth age calculated by the calculation unit,
A tooth condition determination device having. The tooth condition determination device according to claim 1, wherein the relation acquisition unit acquires, as the relation, an approximate expression generated using the state value and the age in the group. The relationship acquisition unit acquires the relationship between the number of DMF teeth indicating the total number of untreated teeth, lost teeth and treated teeth, and the age of the human,
The tooth condition determination device according to claim 1, wherein the condition value acquisition unit acquires the number of DMF teeth as the condition value. The relationship acquisition unit includes a first relationship between the number of DMF teeth and the age of the human, a second relationship between the number of lost teeth and the age of the human, a number of crowns and the age of the human. Obtain at least two of the third relationship between
The state value acquisition unit acquires at least two of the number of DMF teeth, the number of lost teeth, and the number of crowns as the state value,
The calculation unit, based on at least two of the first relationship, the second relationship, and the third relationship acquired by the relationship acquisition unit, the number of DMF teeth acquired by the state value acquisition unit, the loss. The tooth condition determination device according to claim 3, wherein the tooth age corresponding to at least two of the number of teeth and the number of crowns is calculated. The calculation unit, based on the first relationship, the second relationship, and the third relationship acquired by the relationship acquisition unit, the number of DMF teeth acquired by the state value acquisition unit, the number of lost teeth, and the crown. The tooth condition determination device according to claim 4, wherein the tooth age corresponding to a number is calculated. The calculation unit sets different weights for at least two of the number of DMF teeth, the number of lost teeth, and the number of crowns acquired by the state value acquisition unit, and calculates the tooth age. Or the tooth condition determination device according to 5. 7. The calculation unit determines, based on the age of the user, the weight of at least two of the number of DMF teeth, the number of lost teeth, and the number of crowns acquired by the state value acquisition unit. The tooth condition determination device according to. The tooth condition determination device according to any one of claims 1 to 7, wherein the output unit outputs a predetermined notification to the user when the tooth age is older than the user's age. The relationship acquisition unit acquires the relationship in the first group,
The calculation unit calculates the tooth age in the first group corresponding to the state value of a user belonging to a second group different from the first group, based on the relationship in the first group, Item 10. The tooth condition determination device according to any one of items 1 to 8. The relationship acquisition unit acquires a correction value for converting a tooth age in a first group into a tooth age in a second group different from the first group, and the relationship in the second group,
The calculation unit calculates the tooth age in the second group corresponding to the state value of the user belonging to the second group based on the relationship in the second group, and further, the correction in the first group. The tooth condition determination device according to claim 1, wherein the tooth age in the first group is calculated by adding or multiplying a value. The processor
Obtaining a relationship between a state value representing the state of human teeth in a given population and the age of the human being;
Obtaining the state value of the user's tooth,
Calculating the tooth age of the user corresponding to the state value acquired by the step of acquiring the state value, based on the relationship acquired by the step of acquiring the relationship,
Outputting the tooth age calculated by the calculating step,
A tooth condition determination method for executing.

Images