JP4958323B1 - Jaw deformity determination index calculation method, jaw deformity determination method, program, and computer - Google Patents

Abstract

[PROBLEMS] To easily calculate a jaw deformity determination index as an objective material for determining whether or not a patient has jaw deformity, and to use it, it is more objective of jaw deformity A method for calculating a jaw deformity determination index, a method for determining a jaw deformity, and a program therefor are provided that enable accurate diagnosis in a short time.
A distance between S and A (SA), a distance between S and B (SB), and a distance between Go and Me measured by cephalometric radiography of a patient. The jaw deformity determination index is calculated by calculating P = ((S−B) + (Go−Me)) / (S−A) using the distance (Go−Me). Based on this jaw deformity determination index, it is determined whether or not it is jaw deformity.
[Selection] Figure 1

Description

  The present invention relates to a method for calculating an index for determining the necessity of jaw surgery in orthodontic treatment, a method for determining the necessity for jaw surgery in orthodontic treatment, a program thereof, a method for calculating an index for determining inconsistencies in the maxilla and mandible in dental treatment, and dental treatment. In particular, the dentist decides whether or not the patient's jaw bone surgery is necessary for orthodontic treatment, and determines whether or not the mandible is harmonized (skeletal pattern). It is suitable for use in determining the degree of)).

  In orthodontic treatment, some patients may need to perform jaw surgery. Conventionally, the necessity of this surgical operation of the jawbone is to take a cephalogram of the patient's cephalogram, and based on this cephalogram, perform a cephalometric analysis centered on angle measurement, Based on the result, a dentist made a judgment (for example, see Non-Patent Document 1).

Satoshi Kameda, “Diagnostic methods in orthodontic practice”, pages 54-71 (Medical Publishing Co., Ltd., issued in June 1978)

  However, since the above-described conventional diagnostic methods often depend on the experience of the dentist, as a result, the dentist tends to vary in the diagnosis results, making it difficult to make an objective diagnosis. For this reason, there was a possibility that appropriate orthodontic treatment could not be performed.

  Therefore, the problem to be solved by the present invention is to provide an index for determining whether or not a jaw bone operation is necessary as an objective material for a dentist to determine whether or not the patient's jaw surgery is necessary in orthodontic treatment of the patient. In orthodontic treatment, which can be easily calculated and enables dentists to make more accurate and accurate diagnosis easily and in a short time by combining the results of other inspection methods as appropriate. It is to provide a method for calculating an index for determining whether or not jaw surgery is necessary and a program therefor.

  Another problem to be solved by the present invention is to provide an index for determining whether or not jaw surgery is necessary as an objective material for a dentist to determine whether or not a patient needs jaw surgery in orthodontic treatment. A method for determining the necessity of jaw bone surgery in orthodontic treatment, which allows dentists to make more accurate and accurate diagnosis easily and in a short time by using the results of other inspection methods as appropriate And providing a program for it.

  Still another problem to be solved by the present invention is to easily calculate a maxillary and mandibular incompatibility determination index that is an objective material for a dentist to determine inadequate maxillary and mandibular incongruity in dental treatment of a patient. It is possible to calculate the maxillary and mandibular incompatibility index in dental treatment, which allows dentists to make more accurate and accurate diagnosis easily and in a short time by using the results of other examination methods as appropriate. It is to provide a method and a program therefor.

  Still another problem to be solved by the present invention is to use another determination method using a mandibular bone inconsistency determination index that is an objective material for a dentist to determine a patient's mandible and maxillary bone incompatibility in dental treatment of a patient. Providing a method for determining the maxillary and mandibular incompatibility in dental treatment and a program therefor, enabling a dentist to make a more objective and accurate diagnosis easily and in a short time by appropriately using the results of It is.

  The present inventor accidentally measures the distance between specific measurement points in a cephalometric radiogram in the course of conducting intensive research to solve the above-described problems, and uses these distances to calculate a specific calculation formula. It is found that by using the numerical value obtained by calculation based on the dentist, the dentist can objectively and easily determine whether or not the patient's jaw surgery is necessary in the orthodontic treatment of the patient. Actually, the above numerical values were calculated for a large number of patients to confirm their effectiveness. Furthermore, it has also been found that the above numerical values are effective for objectively and easily judging the patient's maxilla and mandible incongruity.

The present invention has been devised as a result of intensive studies based on the above-mentioned knowledge obtained independently by the present inventors.
That is, in order to solve the above problems, the present invention provides:
The distance between S and A (SA), the distance between S and B (SB), and the distance between Go and Me (Go) measured by cephalometric radiography of the patient. -Me)
P = ((SB) + (Go−Me)) / (SA) is a method for calculating an index for determining whether or not the jaw surgery is necessary in orthodontic treatment.

In addition, this invention
The distance between S and A (SA), the distance between S and B (SB), and the distance between Go and Me (Go) measured by cephalometric radiography of the patient. -Me)
P = ((S−B) + (Go−Me)) / (S−A)
If necessary, further round off the fourth decimal place of P,
Q = (P− [P]) × 1000 ([] is a Gaussian symbol) (however, 2.000 ≦ P <3.000)
Or Q = (P − ([P] +1)) × 1000 ([] is a Gaussian symbol) (where P <2.000)
Calculate
A method for determining the necessity of jaw bone surgery in orthodontic treatment, wherein the necessity of jaw surgery is determined based on the calculated P or Q.

  Here, S, A, B, Go and Me are measurement points obtained by cephalometric radiography. The position of each measurement point is shown in FIG. S is an abbreviation for Sella, and is the center point of the saddle-shaped shadow image of the sphenoid turkey. A is an abbreviation for point A, ANS (the anterior nasal spine, which is the tip of the anterior nasal spine, the tip of the joint bone with the people under the nose) and the maxillary central incisor This is the deepest point on the mid-sagittal plane between the prosthion and the foremost tip of the interdental process. B is an abbreviation for point B, which is the deepest point between Infradentale and pogonion (the most protruding point of the mandibular genital ridge with respect to the Frankfort plane). Go is an abbreviation for Gonion, and the bisector of the angle between the line connecting the posterior margin plane of the temporomandibular joint and the posterior edge of the mandibular angle and the mandibular plane intersects the mandibular angle. Is a point. Me is an abbreviation for menton, and is the lowest point of the midline cross-sectional image of the chin.

The inventor measures distances (SA), (SB), and (Go-Me) in cephalometric radiograms of a large number of patients, and P = ((SB) + (Go-Me). )) / (SA), the majority of patients
P = ((SB) + (Go-Me)) / (SA) = 2. XYZ
(X, Y and Z are integers from 0 to 9)
I found out that In other words, P of the majority of patients is in the range of 2.000 ≦ P <3.000, and only the decimal part is different. However, for very few patients, P <2.000.

P itself may be used as an index for determining the necessity of jaw surgery, but it is easy to understand when expressed as an integer. For this reason, in the case of 2.000 ≦ P <3.000, typically, after calculating P, after rounding down the fourth decimal place of P, Q = (P− [P] ) × 1000. Since [P] means that the decimal part of P is rounded down, P- [P] means that the decimal part of P is extracted. Q = (P− [P]) × 1000 means that the fractional part thus extracted is multiplied by 1000. in this case,
P- [P] = 2. XYZ- [2. XYZ] = 2. XYZ-2 = 0. XYZ
It becomes. Therefore, Q = (P− [P]) × 1000 = XYZ, which is an integer of 0 to 999. As an example, when P = 2.512, Q = (P− [P]) × 1000 = (2.512− [2.512]) × 1000 = (2.512−2) × 1000 = 0.512 X1000 = 512.

  P- [P] or a numerical value XYZ obtained by multiplying it by 1000 can be considered as a numerical value for evaluating the ratio of the size of the mandible to the maxilla in the profile of the head. From the experience that the inventor has been involved in the orthodontic treatment of a large number of patients, in general, for example, when P ≧ 2.400 or Q (or XYZ) ≧ 400, surgical indication, in other words, in orthodontic treatment Therefore, it can be judged that the surgical operation of the jawbone based on the mandibular cutting operation is necessary. Thus, for example, by determining whether P ≧ 2.400 or Q ≧ 400 with respect to the calculated P or Q, it is determined that surgical indication, in other words, jaw bone surgery is necessary. can do. For example, when 0.350 ≦ P <2.400 or 350 ≦ Q <400, a borderline case is assumed. In the case of borderline, for example, the distance (SN) between S and N (Nasion abbreviation, the foremost point of nasal frontal suture) and Wits analysis (points A and B on the occlusal plane) When each line is drawn with a perpendicular, the distance between the legs of that perpendicular is Wits) and a supplementary analysis is added. By determining whether or not 0.350 ≦ P <2.400 or 350 ≦ Q <400, it is possible to determine whether or not the case is a borderline case. If there is a problem with the distance (S−N), specifically, for example, if the distance is shorter than the average value of (S−N) by 2 × standard deviation (2SD) or more, the result of Wits analysis should be 12 mm or more, for example. For example, it can be determined that surgical indication, in other words, jaw bone surgery is required. In the following, Q or the integer XYZ is referred to as an OPE index (operation index) as necessary.

On the other hand, in the case of P <2.000 (usually 1.000 ≦ P <2.000), typically, after calculating P, after rounding down the fourth decimal place of P, Q = (P − ([P] +1)) × 1000 is calculated. in this case,
P-([P] +1) = 1. XYZ-([1.XYZ] +1) = 1. XYZ-2
It becomes. Therefore, Q = (P − ([P] +1)) × 1000 = (1.XYZ−2) × 1000, which is an integer from −1000 to −1. As an example, if P = 1.912, Q = (P-([P] +1)) × 1000 = (1.912-([1.912] +1)) × 1000 = (1.9912-2) × 1000 = −0.088 × 1000 = −88.

  The method for calculating the index for determining the necessity of jaw surgery can be easily executed by a computer using a predetermined program including the above formulas for P and Q. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. For example, distances (SA), (SB), and (Go-Me) in a cephalometric radiogram are input to the computer as data necessary for calculation. Alternatively, image data obtained by cephalometric radiography is taken into a computer, the coordinates of S, A, B, Go and Me are measured from this image data, and the distance (SA) from the coordinates thus measured, (SB) and (Go-Me) may be obtained by calculation, and P and Q may be calculated by the above formula using these distances.

  In addition, the method for determining whether or not the jawbone surgery is necessary can be easily executed by a computer using a predetermined program including the above-described P and Q calculation formulas or P and Q determination formulas. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. Data necessary for the calculation can be obtained in the same manner as the above-described method for calculating the index for determining the necessity of jaw surgery.

  In the above invention, P = ((S−B) + (Go−Me)) / (S−A) is calculated, and supplementary analysis is performed by measuring the distance (S−N) as necessary. However, it is also effective to reflect the distance (S−N) in the calculation formula of P from the beginning.

That is, this invention
The distance between S and A (S-A), the distance between S and N (S-N), the distance between S and B (S -B) and the distance between Go and Me (Go-Me)
P ′ = ((S−B) + (Go−Me)) / ((S−A) + (S−N)) is calculated, and an index for determining the necessity of jaw bone surgery in orthodontic treatment This is the calculation method.

In addition, this invention
The distance between S and A (S-A), the distance between S and N (S-N), the distance between S and B (S -B) and the distance between Go and Me (Go-Me)
P ′ = ((S−B) + (Go−Me)) / ((S−A) + (S−N))
If necessary, further round off the fourth decimal place of P ',
Q ′ = (P ′ − [P ′]) × 1000 ([] is a Gaussian symbol) (where 1.000 ≦ P ′ <2.000)
Or Q ′ = (P ′ − ([P ′] + 1)) × 1000 ([] is a Gaussian symbol) (where P ′ <1.000)
Calculate
A method for determining the necessity of jaw bone surgery in orthodontic treatment, wherein the necessity of jaw surgery is determined based on the calculated P or Q.

The inventor measures distances (SA), (SN), (SB), and (Go-Me) in cephalometric radiographs of a large number of patients, and P ′ = ((S− B) + (Go−Me)) / ((S−A) + (S−N)). As a result, in the majority of patients,
P ′ = ((S−B) + (Go−Me)) / ((S−A) + (S−N)) = 1. XYZ
(X, Y and Z are integers from 0 to 9)
I found out that In other words, P ′ of the majority of patients is in the range of 1.000 ≦ P ′ <2.000, and only the decimal part is different. However, for very few patients, P ′ <1.000.

P ′ itself may be used as an index for determining the necessity of jaw surgery, but it is easy to understand when expressed as an integer. Therefore, in the case of 1.000 ≦ P ′ <2.000, typically, after calculating P ′, further rounding down the fourth decimal place of P ′ and then Q ′ = (P '− [P ′]) × 1000 is calculated. Since [P ′] means that the decimal number of P ′ is rounded down, P ′ − [P ′] means that the decimal part of P ′ is extracted. Q ′ = (P ′ − [P ′]) × 1000 means that the fraction part thus extracted is multiplied by 1000. in this case,
P ′ − [P ′] = 1. XYZ- [1. XYZ] = 1. XYZ-1 = 0. XYZ
It becomes. Therefore, Q ′ = (P ′ − [P ′]) × 1000 = XYZ, and an integer of 0 or more and 999 or less. As an example, if P ′ = 1.512, Q ′ = (P ′ − [P ′]) × 1000 = (1.512− [1.512]) × 1000 = (1.512−1) × 1000 = 0.512 × 1000 = 512.

  P ′ − [P ′] or a numerical value XYZ obtained by multiplying it by 1000 can be considered as a numerical value for evaluating the ratio of the size of the mandible to the maxilla in the profile of the head. From the experience that the inventor has been involved in the orthodontic treatment of a large number of patients, generally, for example, when P ′ ≧ 1.330 or Q ′ (or XYZ) ≧ 330, the surgical indications in the orthodontic treatment In other words, it can be determined that the surgical operation of the jawbone based on the mandibular cutting operation is necessary. Thus, for example, by determining whether P ′ ≧ 1.330 or Q ′ ≧ 330 against the calculated P ′ or Q ′, surgical indications, in other words, jaw bone surgery is required Can be determined. Further, for example, when 1.270 ≦ P ′ <1.330 or 270 ≦ Q <330, a case of a borderline is assumed. For borderline cases, supplemental analysis is added, for example, by Wits analysis. By determining whether 1.270 ≦ P <1.330 or 270 ≦ Q <330, it is possible to determine whether the case is a borderline case. When there is a problem with the distance (S−N), specifically, for example, when the distance is 2 × standard deviation (2SD) or more shorter than the average value of (S−N), surgical indication, in other words, the jawbone It can be determined that surgery is necessary. Hereinafter, Q ′ or the integer XYZ is referred to as an OPE index (operation index) as necessary.

On the other hand, if P ′ <1.000 (usually 0.800 ≦ P ′ <1.000), typically, after calculating P ′, the fourth decimal place of P ′ is further rounded down. After that, Q ′ = (P ′ − ([P ′] + 1)) × 1000 is calculated. in this case,
P ′ − ([P ′] + 1) = 1. XYZ-([1.XYZ] +1) = 1. XYZ-2
It becomes. Therefore, Q ′ = (P ′ − ([P ′] + 1)) × 1000 = (1.XYZ−2) × 1000, which is an integer from −1000 to −1. As an example, if P ′ = 0.912, Q ′ = (P ′ − ([P ′] + 1)) × 1000 = (0.912 − ([0.912] +1)) × 1000 = (0. 912-1) × 1000 = −0.088 × 1000 = −88.

  The method for calculating the index for determining the necessity of jaw surgery can be easily executed by a computer using a predetermined program including the above-described calculation formulas for P ′ and Q ′. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. For example, distances (SA), (SN), (SB), and (Go-Me) in a cephalometric radiogram are input to the computer as data necessary for the calculation. Alternatively, for example, image data obtained by cephalometric radiography is taken into a computer, and the coordinates of S, A, N, B, Go, and Me are measured from the image data, and the distance (S -A), (SN), (SB), and (Go-Me) may be obtained by calculation, and P ′ and Q ′ may be calculated by the above formula using these distances. .

  The method for determining whether or not the jaw bone surgery is necessary can be easily executed by a computer using a predetermined program including the above-described calculation formulas for P ′ and Q ′ or the determination formulas for P ′ and Q ′. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. Data necessary for the calculation can be obtained in the same manner as the above-described method for calculating the index for determining the necessity of jaw surgery.

In addition, this invention
The distance between S and A (SA), the distance between S and B (SB), and the distance between Go and Me (Go) measured by cephalometric radiography of the patient. -Me)
P = ((SB) + (Go−Me)) / (SA) is a method for calculating the maxillary and mandibular inconsistency determination index in dental treatment.

In addition, this invention
The distance between S and A (SA), the distance between S and B (SB), and the distance between Go and Me (Go) measured by cephalometric radiography of the patient. -Me)
P = ((S−B) + (Go−Me)) / (S−A)
If necessary, further round off the fourth decimal place of P,
Q = (P− [P]) × 1000 ([] is a Gaussian symbol) (however, 2.000 ≦ P <3.000)
Or Q = (P − ([P] +1)) × 1000 ([] is a Gaussian symbol) (where P <2.000)
Calculate
A method for determining maxillary and maxillary bone incongruity in dental treatment, wherein the discriminating of maxillary and maxillary bone is determined based on the calculated P or Q.

  The method for calculating the maxillary and mandibular discord determination index can be easily executed by a computer using a predetermined program including the above-described P and Q calculation formulas. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. Data necessary for the calculation can be obtained in the same manner as the above-described method for calculating the index for determining the necessity of jaw surgery.

  In addition, the method for determining the inequalities of the maxilla and mandible can be easily executed by a computer using a predetermined program including the above-described P and Q calculation formulas or P and Q determination formulas. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. Data necessary for the calculation can be acquired in the same manner as the above-described method for determining whether or not the jaw surgery is necessary.

In addition, this invention
The distance between S and A (S-A), the distance between S and N (S-N), the distance between S and B (S -B) and the distance between Go and Me (Go-Me)
Calculation of the maxillary and mandibular inconsistency determination index in dental treatment, characterized in that P ′ = ((SB) + (Go−Me)) / ((SA) + (SN)) Is the method.

In addition, this invention
The distance between S and A (S-A), the distance between S and N (S-N), the distance between S and B (S -B) and the distance between Go and Me (Go-Me)
P ′ = ((S−B) + (Go−Me)) / ((S−A) + (S−N))
If necessary, further round off the fourth decimal place of P ',
Q ′ = (P ′ − [P ′]) × 1000 ([] is a Gaussian symbol) (where 1.000 ≦ P ′ <2.000)
Or Q ′ = (P ′ − ([P ′] + 1)) × 1000 ([] is a Gaussian symbol) (where P ′ <1.000)
Calculate
A method for determining maxillary and maxillary bone incongruity in dental treatment, wherein the discriminating of maxillary and maxillary bone is determined based on the calculated P or Q.

  The method for calculating the maxillary and mandibular discord determination index can be easily executed by a computer using a predetermined program including the above-described calculation formulas for P ′ and Q ′. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. Data necessary for the calculation can be obtained in the same manner as the above-described method for calculating the index for determining the necessity of jaw surgery.

  In addition, the method for determining the inequalities of the maxilla and mandible can be easily executed by a computer using a predetermined program including the above-described calculation formulas for P ′ and Q ′ or the determination formulas for P ′ and Q ′. This program can be stored in various computer-readable recording media such as a CD-ROM, or can be provided through an electric communication line such as the Internet. Data necessary for the calculation can be acquired in the same manner as the above-described method for determining whether or not the jaw surgery is necessary.

  Here, the above-mentioned dental treatment includes various treatments that are effective for performing treatment according to maxillary and mandibular incongruity. Specifically, for example, in addition to orthodontic treatment, dentures (dentures), etc. Are included. In the above-described method for calculating the maxillary and mandible discord determination index and the method for determining the maxillary and maxillary bone discord, as long as it is not contrary to its nature, the invention is described in the invention of the above-described method for determining whether or not the mandible surgery is necessary. That is true.

  According to the present invention, it is possible to easily calculate a jaw bone surgery necessity determination index that is an objective material for a dentist to determine whether or not a patient's jaw bone surgery is necessary in orthodontic treatment of the patient. In addition, by properly using the results of other inspection methods, it becomes possible for a dentist to make a more objective and accurate diagnosis easily and in a short time. In addition, the dentist can easily calculate the maxillary and mandibular incompatibility index, which is an objective material for the dentist to judge the patient's maxilla and mandible incongruity in dental treatment such as orthodontic treatment of the patient. By appropriately using the results of the method, it becomes possible for the dentist to make a more objective and accurate diagnosis easily and in a short time.

It is a basic diagram for demonstrating the measurement point in a head X-ray standard photograph. It is a flowchart which shows the calculation method of the determination index of the necessity of jaw surgery in the orthodontic treatment according to the first embodiment of the present invention. 2 is a transcribing diagram created based on a cephalometric radiogram of patient 1. FIG. It is a transmission figure created based on the cephalometric radiograph after the mandibular cutting operation of the patient 1. FIG. 5 is a transmission diagram created based on a cephalometric radiogram of patient 2. FIG. 5 is a transmission diagram created based on a cephalometric radiogram after a mandibular cutting operation for patient 2; FIG. 4 is a transmission diagram created based on a cephalometric radiogram of patient 3. FIG. 6 is a transmission diagram created based on a cephalometric radiogram of patient 4. FIG. 6 is a transmission diagram created based on a cephalometric radiogram of a patient 5. FIG. 6 is a transmission diagram created based on a cephalometric radiogram of a patient 6. FIG. 5 is a transmission diagram created based on a cephalometric radiogram after a mandibular cutting operation for a patient 6; FIG. 5 is a transmission diagram created based on a cephalometric radiogram of a patient 7. FIG. 6 is a transmission diagram created based on a cephalometric radiogram of a patient 8. FIG. 6 is a transmission diagram created based on a cephalometric radiogram of a patient 9. FIG. 3 is a transmission diagram created based on a cephalometric radiogram of a patient 10. FIG. 3 is a transmission diagram created based on a cephalometric radiogram of a patient 11. FIG. 5 is a transmission diagram created based on a cephalometric radiogram of a patient 12. It is a flowchart which shows the jaw bone surgery necessity judgment method in the orthodontic treatment by the 2nd Embodiment of this invention. It is a flowchart which shows the calculation method of the jaw bone surgery necessity determination index in the orthodontic treatment by the 3rd Embodiment of this invention. It is a flowchart which shows the jaw bone surgery necessity judgment method in the orthodontic treatment by the 4th Embodiment of this invention. The present invention is used to implement a method for calculating a jaw bone surgery necessity determination index, a jaw bone surgery necessity judgment method, a mandible maxillary bone discord determination index, or a maxilla maxillary discord determination method according to the first to eighth embodiments of the present invention. It is a basic diagram which shows a data processor.

Hereinafter, modes for carrying out the invention (hereinafter referred to as embodiments) will be described.
<1. First Embodiment>
In the first embodiment, a method of calculating an OPE index as an index for determining the necessity of jaw surgery in orthodontic treatment will be described.

  FIG. 2 shows a flowchart of this calculation method. A program according to this flowchart is created and executed by a computer.

  Before performing this calculation, a cephalometric radiograph of the patient undergoing orthodontic treatment is performed, and the distance between S and A (SA) and the distance between S and B (SB). And the distance (Go-Me) between Go and Me is measured. These distances can be easily measured by inputting coordinate data of S, A, B, Go, and Me measurement points on a cephalometric radiogram using, for example, a pen tablet or digitizer. it can. Alternatively, image data obtained by cephalometric radiography is taken into a computer, the coordinates of S, A, B, Go and Me are measured from this image data, and the distance (SA) from the coordinates thus measured, (SB) and (Go-Me) may be obtained by calculation.

  As shown in FIG. 2, in step S1, distances (SA), (SB), and (Go-Me) measured as described above are input.

In step S2, from the inputted (SA), (SB) and (Go-Me), P = ((SB) + (Go-Me)) / (SA)
Calculate P according to

In step S3, the fourth decimal place or less of P obtained by calculation as described above is rounded down. When 2.000 ≦ P <3.000,
OPE index Q is calculated according to Q = (P− [P]) × 1000, and when P <2.000,
Q = (P − ([P] +1)) × 1000
The OPE index Q is calculated according to

  In step S4, the OPE index Q calculated as described above is output to a display, for example.

  When the OPE index Q calculated in this way is 400 or more, it can be diagnosed that a mandibular cutting operation is necessary in orthodontic treatment. Further, in the case of borderline cases where the OPE index Q is 350 or more and less than 400, supplementary analysis is added by distance (SN) and Wits analysis. When the distance (S−N) is shorter than the average value by 2SD or more, if the result of Wits analysis is 12 mm or more, it is determined that surgical adaptation, in other words, jaw bone surgery is necessary.

  When the OPE index Q is less than 350 and 0 or more, it can be determined that the orthodontic treatment does not require surgery on the jawbone.

  A negative OPE index Q also means a significant retro (undergrowth) tendency of the mandible or an overgrowth tendency of the maxilla, and the surgical operation of the jaw bone needs to be considered. Generally, when the OPE index Q is −50 or more and less than 0, the necessity for surgical operation of the jawbone is increased.

  In general, in addition to the OPE index Q, the dentist finally determines whether or not the jaw bone surgery is necessary by using the results of other examinations such as a conventional cephalometric analysis centering on angle measurement.

[Example 1]
A cephalometric radiograph of patient 1 was taken. FIG. 3 shows a transmission diagram created based on the cephalometric radiogram.

  From FIG. 3, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 78.0 mm, (SB) = 123.0 mm, and (Go-Me) = 78.0 mm. When P was calculated using these data, it was (123.0 + 78.0) /78.0=2.576. Therefore, the OPE index Q is 576. Note that (S−N) = 67.0 mm and Wits = 17.0 mm.

  Since the OPE index Q is 576, the patient 1 can determine that a mandibular cutting operation is necessary in orthodontic treatment.

  Therefore, the necessary cutting operation of the mandible was performed. After the cutting operation, a cephalometric radiogram of patient 1 was taken. FIG. 4 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 4, distances (SA), (SB), and (Go-Me) were measured. As a result, (S−A) = 78.0 mm, (S−B) = 111.0 mm, and (Go−Me) = 73.0 mm. When P was calculated using these data, it was (111.0 + 73.0) /78.0=2.358. Therefore, the OPE index Q is 358. Note that (S−N) = 67.0 mm and Wits = 4.0 mm.

  Since the OPE index Q is 358, it can be determined that the patient 1 can perform orthodontic treatment as a result of the mandibular cutting operation.

[Example 2]
A cephalometric radiograph of patient 2 was taken. FIG. 5 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 5, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 83.0 mm, (SB) = 123.0 mm, and (Go−Me) = 81.0 mm. When P was calculated using these data, it was (123.0 + 81.0) /83.0=2.457. Therefore, the OPE index Q is 457. Note that (S−N) = 69.0 mm and Wits = 16.0 mm.

  Since the OPE index Q is 457, the patient 2 can determine that a mandibular cutting operation is necessary.

  Therefore, the necessary cutting operation of the mandible was performed. After the cutting operation, a cephalometric radiogram of patient 2 was taken. A transmission diagram created based on the cephalometric radiogram is shown in FIG.

  From FIG. 6, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 83.0 mm, (SB) = 116.0 mm, and (Go−Me) = 80.0 mm. When P was calculated using these data, it was (116.0 + 80.0) /83.0=2.361. Therefore, the OPE index Q is 361. Note that (S−N) = 69.0 mm and Wits = 6.0 mm.

  Since the OPE index Q is 361, it can be determined that the patient 2 can perform orthodontic treatment as a result of the mandibular cutting operation.

[Example 3]
A cephalometric radiogram of patient 3 was taken. FIG. 7 shows a transmission diagram created based on the cephalometric radiogram.

  From FIG. 7, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 88.0 mm, (SB) = 126.0 mm, and (Go-Me) = 78.0 mm. When P was calculated using these data, it was (126.0 + 78.0) /88.0=2.318. Therefore, the OPE index Q is 318. Note that (S−N) = 67.0 mm and Wits = 7.0 mm.

  Although there are some skeletal class III cases, since the OPE index Q is 318, it can be determined that the patient 3 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 4]
A cephalometric radiogram of patient 4 was taken. A transmission diagram created based on the cephalometric radiogram is shown in FIG.

  From FIG. 8, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 85.0 mm, (SB) = 119.0 mm, and (Go-Me) = 77.0 mm. When P was calculated using these data, it was (119.0 + 77.0) /85.0=2.305. Therefore, the OPE index Q is 305. Note that (S−N) = 64.0 mm and Wits = 9.0 mm.

  Although it is a skeletal class III case, since the OPE index Q is 305, it can be determined that the patient 4 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 5]
A cephalometric radiogram of patient 5 was taken. FIG. 9 shows a transmission diagram created based on the cephalometric radiogram.

  From FIG. 9, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 75.0 mm, (SB) = 109.0 mm, and (Go-Me) = 70.0 mm. When P was calculated using these data, it was (109.0 + 70.0) /75.0=2.386. Therefore, the OPE index Q is 386. Note that (S−N) = 65.0 mm and Wits = 10.0 mm.

  Since the OPE index Q is 386, it is a borderline case. Wits is 10.0 mm, which is a very skeletal case, but (SN) = 65.0 mm. Therefore, it is judged that it is not necessary to perform jaw surgery when performing orthodontic treatment. Can do.

[Example 6]
A cephalometric radiogram of patient 6 was taken. FIG. 10 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 10, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 87.0 mm, (SB) = 18.0 mm, and (Go−Me) = 80.0 mm. It was (128.0 + 80.0) /87.0=2.390 when P was calculated using these data. Therefore, the OPE index Q is 390. Note that (S−N) = 68.0 mm and Wits = 12.0 mm.

  Since the OPE index Q is 390, this is a borderline case. Since Wits are 12.0 mm and larger than 10.0 mm and (S−N) = 68.0 mm, this is a skeletal class III case and can be determined to be jaw deformity. It can be determined that a cutting operation is necessary.

  Therefore, the necessary cutting operation of the mandible was performed. After the cutting operation, a cephalometric radiograph of patient 6 was taken. FIG. 11 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 11, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 87.0 mm, (SB) = 121.0 mm, and (Go−Me) = 73.0 mm. When P was calculated using these data, it was (121.0 + 73.0) /87.0=2.229. Therefore, the OPE index Q is 229. Note that (S−N) = 68.0 mm and Wits = 5.0 mm.

  Since the OPE index Q is 229, it can be determined that the patient 2 can perform orthodontic treatment as a result of the mandibular cutting operation.

[Example 7]
A cephalometric radiogram of patient 7 was taken. FIG. 12 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 12, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 86.0 mm, (SB) = 111.0 mm, and (Go−Me) = 69.0 mm. When P was calculated using these data, it was (111.0 + 69.0) /86.0=2.093. Therefore, the OPE index Q is 93. Note that (S−N) = 67.0 mm and Wits = 0 mm.

  Although the OPE index Q is 93 and there is a tendency to retreat the mandible, the patient 7 does not need to perform jaw surgery when performing orthodontic treatment, and can be determined to be an orthodontic treatment indication by tooth extraction treatment. .

[Example 8]
A cephalometric radiogram of patient 8 was taken. FIG. 13 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 13, distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 90.0 mm, (SB) = 127.0 mm, and (Go−Me) = 80.0 mm. When P was calculated using these data, it was (127.0 + 80.0) /90.0=2.300. Therefore, the OPE index Q is 300. Note that (S−N) = 68.0 mm and Wits = 11.0 mm.

  Since the OPE index Q is 300, it can be determined that the patient 8 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 9]
A cephalometric radiogram of patient 9 was taken. FIG. 14 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 14, the distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 79.0 mm, (SB) = 105.0 mm, and (Go-Me) = 73.0 mm. When P was calculated using these data, it was (105.0 + 73.0) /79.0=2.253. Therefore, the OPE index Q is 253. Note that (S−N) = 68.0 mm and Wits = 3.0 mm.

  Since the OPE index Q is 253, it can be determined that the patient 9 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 10]
A cephalometric radiogram of patient 10 was taken. FIG. 15 shows a transmission diagram created based on this cephalometric radiogram.

  From FIG. 15, the distances (SA), (SB), and (Go-Me) were measured. As a result, (SA) = 81.0 mm, (SB) = 103.0 mm, and (Go−Me) = 70.0 mm. When P was calculated using these data, it was (103.0 + 70.0) /81.0=2.135. Therefore, the OPE index Q is 135. Note that (S−N) = 69.0 mm and Wits = 3.0 mm.

  Although it is a non-skeletal case, since the OPE index Q is 135, it is not necessary for the patient 10 to perform jaw surgery when performing orthodontic treatment. Can do.

[Example 11]
A cephalometric radiogram of patient 11 was taken. FIG. 16 shows a transmission diagram created based on the cephalometric radiogram.

  From FIG. 16, distances (SA), (SB), and (Go-Me) were measured. As a result, (S−A) = 81.0 mm, (SB) = 108.0 mm, and (Go−Me) = 68.0 mm. When P was calculated using these data, it was (108.0 + 68.0) /81.0=2.172. Therefore, the OPE index Q is 172. Note that (S−N) = 63.0 mm and Wits = 2.0 mm.

  Although the OPE index Q is 172 and Wits is 2.0 mm, which is a non-skeletal case, patient 11 does not need to perform jaw surgery when performing orthodontic treatment, and orthodontic treatment by non-extraction treatment It can be judged as adaptation.

[Example 12]
A cephalometric radiogram of patient 12 was taken. A transmission diagram created based on the cephalometric radiogram is shown in FIG.

  From FIG. 17, distances (SA), (SB), and (Go-Me) were measured. As a result, (S−A) = 91.0 mm, (SB) = 115.0 mm, and (Go−Me) = 65.0 mm. When P was calculated using these data, it was (115.0 + 65.0) /91.0=1.978. Therefore, the OPE index Q is −22. Note that (S−N) = 74.0 mm and Wits = 0 mm.

  Since the OPE index Q is −22, it is a borderline case. In general, in the case of −50 ≦ Q <0, it is necessary to perform jaw surgery when performing orthodontic treatment, but this is a case with a strong tendency to retrograde the mandible, and patient 12 performs orthodontic treatment. In doing so, it can be determined that it is not necessary to perform jawbone surgery.

  As described above, according to the method for calculating the index for determining the necessity of jaw surgery according to the first embodiment, the distances (SA), (SB), and (Go) measured by cephalometric radiography. -Me) can be used to calculate the OPE index Q. Based on this OPE index Q, it is possible to accurately determine whether or not the jaw bone surgery is necessary for orthodontic treatment in a short time and with a certain objectivity, regardless of the experience of the dentist. Judgment can be made.

<2. Second Embodiment>
In the second embodiment, a method for determining whether or not jaw surgery is necessary in orthodontic treatment will be described.

  FIG. 18 shows a flowchart of the method for determining whether or not the jawbone surgery is necessary. A program according to this flowchart is created and executed by a computer.

  Similar to the first embodiment, the distances (SA), (SB), and (Go-Me) are measured before this jaw bone surgery necessity determination method is executed.

  As shown in FIG. 18, in step S11, the distances (SA), (SB), and (Go-Me) measured as described above are input.

In step S12, P = ((SB) + (Go-Me)) / (SA) from the inputted (SA), (SB) and (Go-Me).
Calculate P according to

In step S13, it is determined from P obtained by calculation as described above whether 2.000 ≦ P <3.000 or P <2.000. As a result of the determination, if 2.000 ≦ P <3.000, the fourth decimal place of P is rounded down,
Q = (P− [P]) × 1000
To calculate the OPE index Q, and if P <2.000,
Q = (P − ([P] +1)) × 1000
The OPE index Q is calculated according to

  In step S14, it is determined whether the OPE index Q calculated in this way is 400 or more.

  In step S15, when the OPE index Q is 400 or more, it is determined that a mandibular cutting operation is necessary in orthodontic treatment.

  In step S16, the determination result that mandibular cutting operation is necessary is output to a display, for example.

  If it is determined in step S14 that Q is not 400 or more, it is determined in step S17 whether Q is 350 or more and less than 400.

  If the OPE index Q is 350 or more and less than 400, it is determined in step S18 whether or not the distance (SN) is 2SD or more shorter than the average value and Wits is 12 mm or more. If applicable, it is determined in step S19 that a surgical operation on the jawbone is necessary.

  If it is determined that the jaw bone surgery is necessary, the determination result is output to, for example, a display in step S20.

  If it is determined in step S18 that the distance (S−N) is shorter than the average value by 2SD or more and Wits does not correspond to 12 mm or more, it is determined in step S21 that the jaw bone surgery is unnecessary.

  If it is determined that the jaw bone surgery is unnecessary, the determination result is output to, for example, a display in step S22.

  If it is determined in step S17 that Q is not 350 or more and 400 or less, it is determined in step S23 whether Q is 0 or more and less than 350.

  If it is determined that the OPE index Q is greater than or equal to 0 and less than 350, it is determined in step S24 that no surgical operation on the jawbone is required.

  If it is determined that the jaw bone surgery is unnecessary, the determination result is output to a display, for example, in step S25.

  When it is not determined that the OPE index Q is 0 or more and less than 350, the OPE index Q is negative. In this case, in step S26, the dentist determines whether or not the jaw bone surgery is necessary, and in step S27 outputs the diagnosis result to, for example, a display.

  According to the jaw bone surgery necessity determination method according to the second embodiment, the distance is calculated using distances (SA), (SB), and (Go-Me) measured by cephalometric radiography. Based on the OPE index Q, it is possible to accurately determine whether or not jaw bone surgery is required for orthodontic treatment in a short time and with a certain objectivity, regardless of the experience of the dentist. be able to.

<3. Third Embodiment>
In the third embodiment, a method for calculating an OPE index as an index for determining the necessity of jaw surgery in orthodontic treatment will be described.

  FIG. 19 shows a flowchart of this calculation method. A program according to this flowchart is created and executed by a computer.

  Before performing this calculation, a cephalometric radiograph of the patient undergoing orthodontic treatment is performed and the distances (SA), (SN), (SB), and (Go-Me) are measured. . Measurement of these distances is easily performed by inputting coordinate data of S, A, N, B, Go, and Me measurement points on a cephalometric radiogram using, for example, a pen tablet or digitizer. be able to. Alternatively, image data obtained by cephalometric radiography is taken into a computer, and the coordinates of S, A, N, B, Go and Me are measured from the image data, and the distance (SA) is calculated from the coordinates thus measured. ), (SN), (SB), and (Go-Me) may be obtained by calculation.

  As shown in FIG. 19, in step S31, the distances (SA), (SN), (SB), and (Go-Me) measured as described above are input.

In step S32, P ′ = ((S−B) + (Go−Me)) / () from the inputted (S−A), (S−N), (S−B) and (Go−Me). (S−A) + (S−N))
To calculate P ′.

In step S33, the fourth decimal place of P ′ obtained by calculation as described above is rounded down. When 1.000 ≦ P ′ <2.000,
The OPE index Q ′ is calculated according to Q ′ = (P ′ − [P ′]) × 1000, and when P ′ <1.000,
Q ′ = (P ′ − ([P ′] + 1)) × 1000
The OPE index Q ′ is calculated according to

  In step S34, the OPE index Q 'calculated as described above is output to a display, for example.

  When the OPE index Q 'calculated in this way is 330 or more, it can be diagnosed that a mandibular cutting operation is necessary in orthodontic treatment. For borderline cases with an OPE index Q 'of 270 or more and less than 330, supplementary analysis is added by Wits analysis. If the result of Wits analysis is 12 mm or more, it is judged that surgical indication, in other words, jaw bone surgery is necessary.

  When the OPE index Q ′ is less than 330 and equal to or greater than 0, it can be diagnosed that jaw surgery is unnecessary in orthodontic treatment.

  A negative OPE index Q 'also means a significant retro tendency of the mandible or an overgrowth tendency of the maxilla, and jaw surgery should be considered.

  Generally, in addition to the OPE index Q ′, the dentist finally determines whether or not the jaw bone surgery is necessary by using the results of other examinations such as a conventional cephalometric analysis centering on angle measurement. .

[Example 13]
From FIG. 3 which shows the transmission figure produced based on the cephalometric radiogram of the patient 1 image | photographed in Example 1, distance (SA), (SN), (SB) and distance ( Go-Me) was measured. As a result, (S−A) = 78.0 mm, (S−N) = 67.0 mm, (SB) = 123.0 mm, and (Go−Me) = 78.0 mm. When P ′ was calculated using these data, it was (123.0 + 78.0) / (78.0 + 67.0 mm) = 1.386. Therefore, the OPE index Q ′ is 386. Wits = 17.0 mm.

  Since the OPE index Q ′ is 386, the patient 1 can determine that the mandibular cutting operation is necessary in the orthodontic treatment.

  Therefore, the necessary cutting operation of the mandible was performed. From FIG. 4 which shows a transillumination of a cephalometric radiograph after the mandibular cutting operation of the patient 1 taken in Example 1, distances (SA), (SN), (SB) and (Go-Me) was measured. As a result, (S−A) = 78.0 mm, (S−N) = 67.0 mm, (SB) = 111.0 mm, and (Go−Me) = 73.0 mm. Using these data, P ′ was calculated to be (111.0 + 73.0) / (78.0 + 67.0) = 1.268. Therefore, the OPE index Q ′ is 268. Wits = 4.0 mm.

  Since the OPE index Q ′ is 268, it can be determined that the patient 1 can perform orthodontic treatment as a result of the mandibular cutting operation.

[Example 14]
From FIG. 5 which shows a transmission diagram created based on the cephalometric radiogram of the patient 2 taken in Example 2, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 83.0 mm, (S−N) = 69.0 mm, (S−B) = 123.0 mm, and (Go−Me) = 81.0 mm. When P ′ was calculated using these data, it was (123.0 + 81.0) / (83.0 + 69.0) = 1.342. Therefore, the OPE index Q ′ is 342. Wits = 16.0 mm.

  Since the OPE index Q ′ is 342, it can be determined that the patient 2 needs a mandibular cutting operation.

  Therefore, the necessary cutting operation of the mandible was performed. From FIG. 6 which shows the transillumination created on the cephalometric radiogram after the mandibular cutting operation of the patient 2, distances (SA), (SN), (SB) and (Go-) are shown. Me) was measured. As a result, (S−A) = 83.0 mm, (S−N) = 69.0 mm, (S−B) = 116.0 mm, and (Go−Me) = 80.0 mm. When P ′ was calculated using these data, it was (116.0 + 80.0) / (83.0 + 69.0) = 1.289. Therefore, the OPE index Q ′ is 289. Wits = 6.0 mm.

  Since the OPE index Q ′ is 289, it can be determined that the patient 2 can perform orthodontic treatment as a result of the cutting operation of the mandible.

[Example 15]
From FIGS. 7A and 7B showing a transmission diagram created based on the cephalometric radiogram of the patient 3 taken in Example 3, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 88.0 mm, (S−N) = 67.0 mm, (SB) = 126.0 mm, and (Go−Me) = 78.0 mm. When P ′ was calculated using these data, it was (126.0 + 78.0) / (88.0 + 67.0) = 1.316. Therefore, the OPE index Q ′ is 316. Wits = 7.0 mm.

  Although there are some skeletal class III cases, since the OPE index Q ′ is 316, it can be determined that the patient 3 does not need to perform jaw bone surgery when performing orthodontic treatment.

[Example 16]
From FIG. 8, which shows a transmission diagram created based on the cephalometric radiogram of the patient 4 taken in Example 4, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 85.0 mm, (S−N) = 64.0 mm, (S−B) = 119.0 mm, and (Go−Me) = 77.0 mm. When P ′ was calculated using these data, it was (119.0 + 77.0) / (85.0 + 64.0) = 1.315. Therefore, the OPE index Q ′ is 315. Wits = 9.0 mm.

  Although it is a skeletal class III case, since the OPE index Q ′ is 315, it can be determined that the patient 4 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 17]
From FIG. 9, which shows a transmission diagram created based on the cephalometric radiogram of the patient 5 taken in Example 5, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 75.0 mm, (S−N) = 65.0 mm, (S−B) = 109.0 mm, and (Go−Me) = 70.0 mm. When P ′ was calculated using these data, it was (109.0 + 70.0) / (75.0 + 65.0) = 1.278. Therefore, the OPE index Q ′ is 278. Wits = 10.0 mm.

  Since the OPE index Q 'is 278, it is a borderline case. Wits is 10.0 mm, which is a very skeletal case, but it is 12 mm or less and (SN) = 65.0 mm, so it is not necessary to perform jaw surgery when performing orthodontic treatment Can be determined.

[Example 18]
From FIG. 10, which shows a transmission diagram created based on the cephalometric radiogram of the patient 6 taken in Example 6, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 87.0 mm, (S−N) = 68.0 mm, (SB) = 12.8 mm, and (Go−Me) = 80.0 mm. When P ′ was calculated using these data, it was (128.0 + 80.0) / (87.0 + 68.0) = 1.341. Therefore, the OPE index Q ′ is 341. Wits = 12.0 mm.

  Since the OPE index Q ′ is 341, it is a borderline case. Since Wits is 12.0 mm and (S−N) = 68.0 mm, it is a skeletal class III case and can be judged as jaw deformity, and mandibular cutting operation is necessary. It can be judged that there is.

  Therefore, the necessary cutting operation of the mandible was performed. From FIG. 11, which shows a transmission diagram created based on a cephalometric radiograph after mandibular cutting operation of the patient 6, distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 87.0 mm, (S−N) = 68.0 mm, (SB) = 121.0 mm, and (Go−Me) = 73.0 mm. When P ′ was calculated using these data, it was (121.0 + 73.0) / (87.0 + 68.0) = 1.251. Therefore, the OPE index Q ′ is 251. Wits = 5.0 mm.

  Since the OPE index Q ′ is 251, it can be determined that the patient 6 can perform orthodontic treatment as a result of the mandibular cutting operation.

[Example 19]
From FIG. 12, which shows a transmission diagram created based on the cephalometric radiogram of the patient 7 taken in Example 7, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 86.0 mm, (S−N) = 67.0 mm, (SB) = 111.0 mm, and (Go−Me) = 69.0 mm. When P ′ was calculated using these data, it was (111.0 + 69.0) / (86.0 + 67.0) = 1.176. Therefore, the OPE index Q ′ is 176. Wits = 0 mm.

  Although the OPE index Q ′ is 176 and there is a tendency to retreat the mandible, patient 7 does not need to perform jaw bone surgery when performing orthodontic treatment. Judgment can be made.

[Example 20]
From FIG. 13 which shows the transmission figure created based on the cephalometric radiogram of the patient 8 taken in Example 8, the distances (SA), (SN), (SB) and (Go) are shown. -Me) was measured. As a result, (S−A) = 90.0 mm, (S−N) = 68.0 mm, (S−B) = 127.0 mm, and (Go−Me) = 80.0 mm. When P ′ was calculated using these data, it was (127.0 + 80.0) / (90.0 + 68.0) = 1.310. Therefore, the OPE index Q ′ is 310. Wits = 11.0 mm.

  Since the OPE index Q ′ is 310, it can be determined that the patient 8 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 21]
From FIG. 14 which shows a transmission diagram created based on the cephalometric radiogram of the patient 9 taken in Example 9, the distances (SA), (SN), (SB) and (Go) are shown. -Me) was measured. As a result, (S−A) = 79.0 mm, (S−N) = 68.0 mm, (SB) = 105.0 mm, and (Go−Me) = 73.0 mm. When P ′ was calculated using these data, it was (105.0 + 73.0) / (79.0 + 68.0) = 1.210. Therefore, the OPE index Q ′ is 210. Wits = 3.0 mm.

  Since the OPE index Q ′ is 210, it can be determined that the patient 9 does not need to perform jaw surgery when performing orthodontic treatment.

[Example 22]
From FIG. 15 which shows the transmission drawing produced based on the head X-ray standard photograph of the patient 10 image | photographed in Example 10, distance (SA), (SN), (SB), and (Go). -Me) was measured. As a result, (S−A) = 81.0 mm, (S−N) = 69.0 mm, (S−B) = 103.0 mm, and (Go−Me) = 70.0 mm. When P ′ was calculated using these data, it was (103.0 + 70.0) / (81.0 + 69.0) = 1.153. Therefore, the OPE index Q ′ is 153. Wits = 4.0 mm.

  Although it is a non-skeletal case, since the OPE index Q ′ is 153, it is not necessary for the patient 10 to perform jaw surgery when performing orthodontic treatment, and it is determined that the orthodontic treatment is indicated by non-extraction treatment. be able to.

[Example 23]
From FIG. 16 which shows the transmission drawing produced based on the head X-ray standard photograph of the patient 11 image | photographed in Example 11, distance (SA), (SN), (SB), and (Go). -Me) was measured. As a result, (S−A) = 81.0 mm, (S−N) = 63.0 mm, (S−B) = 108.0 mm, and (Go−Me) = 68.0 mm. When P ′ was calculated using these data, it was (108.0 + 68.0) / (81.0 + 63.0) = 1.222. Therefore, the OPE index Q ′ is 222. Wits = 2.0 mm.

  Although the OPE index Q ′ is 222 and Wits is 2.0 mm, which is a non-skeletal case, patient 11 does not need to perform jaw surgery when performing orthodontic treatment, and correction by non-extraction treatment It can be judged as a therapeutic indication.

[Example 24]
From FIGS. 17A and 17B showing a transmission diagram created based on the cephalometric radiogram of the patient 12 taken in Example 12, the distances (SA), (SN), (SB), and (Go) are shown. -Me) was measured. As a result, (S−A) = 91.0 mm, (S−N) = 74.0 mm, (SB) = 115.0 mm, and (Go−Me) = 65.0 mm. When P ′ was calculated using these data, it was (115.0 + 65.0) / (91.0 + 74.0) = 1.090. Therefore, the OPE index Q ′ is 90. Wits = 0.0 mm.

  Since the OPE index Q 'is 90, this is a borderline case. The patient 12 is a case with a strong mandibular retro tendency, and it can be determined that it is not necessary to perform jaw bone surgery when performing orthodontic treatment.

  As described above, according to the method for calculating the index for determining the necessity of jaw surgery according to the third embodiment, the distances (SA), (SN), (S) measured by cephalometric radiography. -B) and (Go-Me) can be used to calculate the OPE index Q '. Based on this OPE index Q ′, it is possible to accurately determine whether or not the jaw bone surgery is necessary for orthodontic treatment in a short time and with a certain objectivity, regardless of the experience of the dentist. Can be diagnosed.

<4. Fourth Embodiment>
In the fourth embodiment, a method for determining whether or not jaw surgery is necessary in orthodontic treatment will be described.

  FIG. 20 shows a flowchart of the method for determining whether or not jaw surgery is necessary. A program according to this flowchart is created and executed by a computer.

  Similar to the third embodiment, the distances (SA), (SN), (SB), and (Go-Me) are measured before this jaw bone surgery necessity determination method is executed. .

  As shown in FIG. 20, in step S41, the distances (SA), (SN), (SB), and (Go-Me) measured as described above are input.

In step S42, P ′ = ((S−B) + (Go−Me)) / () from the inputted (S−A), (S−N), (S−B) and (Go−Me). (S−A) + (S−N))
To calculate P ′.

In step S43, from P ′ obtained by calculation as described above, it is determined whether 1.000 ≦ P <2.000 or P ′ <1.000. As a result of the determination, if 1.000 ≦ P ′ <2.000, the fourth decimal place of P ′ is rounded down,
Q ′ = (P ′ − [P ′]) × 1000
OPE index Q ′ is calculated according to the following, and when P ′ <1.000,
Q ′ = (P ′ − ([P ′] + 1)) × 1000
The OPE index Q ′ is calculated according to

  In step S44, it is determined whether the OPE index Q 'thus calculated is 330 or more.

  In step S45, when the OPE index Q 'is 330 or more, it is determined that a mandibular cutting operation is necessary in the orthodontic treatment.

  In step S46, a determination result that mandibular cutting operation is necessary is output to a display, for example.

  If it is determined in step S44 that Q ′ is not 330 or more, it is determined in step S47 whether Q ′ is 270 or more and less than 330.

  In step S48, when the OPE index Q 'is 270 or more and less than 330, it is determined whether or not Wits is 12 mm or more. If applicable, it is determined in step S49 that the jawbone surgery is necessary.

  If it is determined that the jaw bone surgery is necessary, the determination result is output to, for example, a display in step S50.

  If it is determined in step S48 that Wits does not correspond to 12 mm or more, it is determined in step S51 that the surgical operation of the jawbone is unnecessary.

  If it is determined that the jaw bone surgery is unnecessary, the determination result is output to, for example, a display in step S52.

  If it is determined in step S47 that Q ′ is not greater than or equal to 270 and less than or equal to 330, it is determined in step S53 whether Q ′ is greater than or equal to 0 and less than 270.

  If it is determined that the OPE index Q ′ is greater than or equal to 0 and less than 270, it is determined in step S44 that no surgical operation on the jawbone is necessary.

  If it is determined that the jaw bone surgery is not necessary, the determination result is output to, for example, a display in step S55.

  If it is not determined that the OPE index Q ′ is greater than or equal to 0 and less than 270, the OPE index Q ′ is negative. In this case, in step S56, the dentist determines whether or not the jaw bone surgery is necessary, and outputs the determination result to, for example, a display in step S57.

  According to the jaw bone surgery necessity determination method according to the fourth embodiment, the distances (SA), (SN), (SB), and (Go-Me) measured by cephalometric radiography. Based on the OPE index Q 'calculated using the), is it necessary to perform jaw surgery in orthodontic treatment in a short time and with a certain objectivity, regardless of the experience of the dentist? It is possible to accurately determine whether or not.

<5. Fifth Embodiment>
In the fifth embodiment, the maxillary and mandibular discord determination index is calculated by the same method as the calculation method of the jaw bone surgery necessity determination index in the orthodontic treatment described in the first embodiment.

  According to the fifth embodiment, the maxillary and mandibular discord determination index can be easily calculated. Based on this index for determining the maxillary and mandibular incompatibility, the maxillary bone incongruity can be accurately determined in dental treatment such as orthodontic treatment in a short time and with a certain objectivity, regardless of the experience of the dentist. Judgment can be made.

<6. Sixth Embodiment>
In the sixth embodiment, the method for determining the upper and lower jawbone inconsistencies is performed by the same method as the method for determining the necessity of jaw surgery in the orthodontic treatment described in the second embodiment.

  According to the sixth embodiment, in a dental treatment such as an orthodontic treatment in a short time and with a certain objectivity, regardless of the experience of the dentist, etc., based on the maxillary and mandible discord judgment index. It is possible to accurately determine the maxilla and mandible incongruity.

<7. Seventh Embodiment>
In the seventh embodiment, the maxilla and mandible discord determination index is calculated by the same method as the calculation method of the jaw bone surgery necessity determination index in the orthodontic treatment described in the third embodiment.

  According to the seventh embodiment, the same advantages as those of the fifth embodiment can be obtained.

<8. Eighth Embodiment>
In the eighth embodiment, the method for determining the upper and lower jaw bone inconsistencies is performed by the same method as the method for determining the necessity of jaw surgery in the orthodontic treatment described in the fourth embodiment.

  According to the eighth embodiment, the same advantages as in the sixth embodiment can be obtained.

  Here, it is used for carrying out the calculation method of the jaw bone surgery necessity determination index, the jaw bone surgery necessity judgment method, the upper and lower jaw bone incompatibility judgment index, or the upper and lower jaw bone inconsistency judgment method according to the first to eighth embodiments. A data processing apparatus will be described.

  FIG. 21 shows an example of the data processing apparatus 10. As shown in FIG. 21, the data processing device 10 includes an auxiliary storage device 11, a memory 12, a CPU (Central Processing Unit) 13 as a processing unit, an input unit 14, an output unit 15, and an input / output interface 16.

  The auxiliary storage device 11 stores various kinds of information, and includes, for example, a hard disk, a ROM (Read Only Memory), and the like. The auxiliary storage device 11 stores a program 111, a compiler 112, and an execution module 113.

  The program 111 is a program (source program) in which processing on the flowchart shown in FIG. 2, FIG. 18, FIG. 19 or FIG. 20 is described. The compiler 112 compiles and links the program 111. The execution module 113 is a module compiled and linked by the compiler 112.

  The memory 12 is temporary storage means for storing various types of information, and is configured by, for example, a RAM (Random Access Memory). The CPU 13 performs various arithmetic processes such as addition, subtraction, multiplication, and division, and plays a role of executing the execution module 13 through the memory 12 and the input / output interface 16. The input unit 14 is an input device for inputting various execution commands and the like. The output unit 15 is an output device that outputs various execution results. The input / output interface 16 mediates input / output between each component of the data processing apparatus 10.

  Next, the operation of the data processing apparatus 10 configured as described above will be described. First, a compile command input from the input unit 14 by the operator is stored in the memory 12 via the input / output interface 16. In the memory 12, the program 111 of the auxiliary storage device 11 is compiled and linked by the compiler 112, and an execution module 113 that is a machine language code is generated.

  Next, when an execution command is input from the input unit 14 by the operator, the CPU 13 loads the execution module 113 into the memory 12. When the execution module 113 is loaded into the memory 12, the CPU 13 sequentially calls each process on the flowchart shown in FIG. 2, 18, 19, or 20 from the memory 12 to the CPU 13, and executes each process. The execution result is stored in the memory 12. The execution result stored in the memory 12 is output by the CPU 13 to the output unit 15 via the input / output interface 16.

  For example, when the processing on the flowchart shown in FIG. 2 is executed to calculate the OPE index, the following is performed. First, the execution module 113 for realizing step S1 of the input process is called from the memory 12 to the CPU 13. In step S <b> 1, data (distance (SA), (SB) and (Go-Me)) input from the input unit 14 by the operator is loaded into the memory 12. When the input process of step S1 is completed, an execution module 113 for realizing step S2 of the calculation process is called from the memory 12 to the CPU 13. In step S2, P is calculated from the input data. When the calculation process of step S2 ends, the execution module 113 for realizing step S3 is called from the memory 12 to the CPU 13. In step S3, an OPE index is calculated according to the size of P. When the calculation process in step S3 ends, the execution module 113 for realizing step S4 is called from the memory 12 to the CPU 13. In step S4, the value of P is output to the output unit 15 as a calculation result.

  The case where the processing on the flowchart shown in FIG. 18, FIG. 19, or FIG. 20 is executed is the same as described above.

  Although the embodiments and examples of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments and examples, and various modifications based on the technical idea of the present invention. Is possible.

  For example, the numerical values, flowcharts, and the like given in the above-described embodiments and examples are merely examples, and different numerical values, flowcharts, and the like may be used as necessary.

  DESCRIPTION OF SYMBOLS 10 ... Data processing apparatus, 11 ... Auxiliary storage device, 12 ... Memory, 13 ... CPU, 14 ... Input part, 15 ... Output part, 16 ... Input / output interface, 111 ... Program, 112 ... Compiler, 113 ... Execution module

Claims (13)

The distance between S and A (SA), the distance between S and B (SB), and the distance between Go and Me (Go) measured by cephalometric radiography of the patient. -Me)
A method for calculating a jaw deformity determination index for calculating P = ((SB) + (Go−Me)) / (SA). Furthermore, round down the decimal place to the fourth decimal place,
Q = (P− [P]) × 1000 ([] is a Gaussian symbol) (however, 2.000 ≦ P <3.000)
Or Q = (P − ([P] +1)) × 1000 ([] is a Gaussian symbol) (where P <2.000)
The method for calculating a jaw deformity determination index according to claim 1.   The method for calculating a jaw deformity determination index according to claim 1 or 2, wherein a Wits analysis is performed to determine whether Wits ≧ 12 mm.   The program for making a computer perform the calculation method of the jaw deformity judgment parameter | index as described in any one of Claims 1-3. The distance between S and A (SA), the distance between S and B (SB), and the distance between Go and Me (Go) measured by cephalometric radiography of the patient. -Me)
P = ((S−B) + (Go−Me)) / (S−A)
Or
Furthermore, round down the decimal place to the fourth decimal place,
Q = (P− [P]) × 1000 ([] is a Gaussian symbol) (however, 2.000 ≦ P <3.000)
Or Q = (P − ([P] +1)) × 1000 ([] is a Gaussian symbol) (where P <2.000)
Calculate
A method for determining jaw deformity, wherein it is determined whether or not the calculated P or Q is equal to or greater than a predetermined value.   The method for determining jaw deformity according to claim 5, wherein it is determined whether or not P ≧ 2.400 or Q ≧ 400.   The jaw deformity determination method according to claim 5 or 6, wherein Wits analysis is performed to determine whether Wits ≧ 12 mm.   The program for making a computer perform the jaw deformity determination method as described in any one of Claims 5-7. The distance between S and A (S-A), the distance between S and N (S-N), the distance between S and B (S -B) and the distance between Go and Me (Go-Me)
A method for calculating a jaw deformity determination index for calculating P ′ = ((SB) + (Go−Me)) / ((SA) + (SN)).   A program for causing a computer to execute the method for calculating a jaw deformity determination index according to claim 9. The distance between S and A (S-A), the distance between S and N (S-N), the distance between S and B (S -B) and the distance between Go and Me (Go-Me)
P ′ = ((S−B) + (Go−Me)) / ((S−A) + (S−N))
Or
Furthermore, the decimal place of P 'is rounded down to the fourth decimal place.
Q ′ = (P ′ − [P ′]) × 1000 ([] is a Gaussian symbol) (where 1.000 ≦ P ′ <2.000)
Or Q ′ = (P ′ − ([P ′] + 1)) × 1000 ([] is a Gaussian symbol) (where P ′ <1.000)
Calculate
A jaw deformity determination method for determining whether or not the calculated P ′ or Q ′ is equal to or greater than a predetermined value to determine whether or not it is jaw deformity.   A program for causing a computer to execute the jaw deformity determination method according to claim 11.   A computer having the program according to claim 4, 8, 10 or 12.

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