Method for measuring human mandible volume surface parameters

FIELD: medicine.

SUBSTANCE: method involves determining volume surface coordinates by applying automated measurement method without contact with technical vision stereo TV system. Reference points are marked with white paint on patient face in advance. The first chewing test resistant to spittle action is introduced. Movements of the points are recorded in making pictures during chewing test. The received pictures are used for determining the point coordinates. Then the second and the third test are introduced showing no resistance to spittle action. Taking pictures and reference points coordinates-measuring processes are repeated, and damped harmonic oscillation plots and their exponential components are built on the received coordinate data. Their reference point coordinates are sent to automated orthopedic articulator unit for reproducing mandible movements.

EFFECT: facilitated data acquisition process; high accuracy of measurements.

7 dwg

 

The invention relates to medical equipment and can be used in prosthetic dentistry to obtain objective information about the functional state of dentition, automate processing of measurement results and to obtain accurate information for diagnosis.

The known method [1], implemented in human-machine measuring the complex, which is based on the vision system, including television stereoblock, interfaced with a personal computer (PC), and the remote control cursor movement. The disadvantages of this method are the low accuracy, and Supervisory control.

Closest to the claimed combination of existing signs is the way [2], in which the orthodontic parameters of the patient's mouth is determined using a device comprising at least one digital camera configured to acquire images of the teeth and the oral cavity of the patient.

The disadvantage of this method [2] is the use of a single camera, the low accuracy of the data, the necessity of moving the patient, the fixation of the patient's head using the support for the chin and rest his forehead.

The invention is directed to improving the accuracy of measurement parameters volumetric surface bottom chelust of man.

This is achieved in that in the method of measurement parameters volumetric surface of the lower jaw of a person coordinates determined using an automated measurement using stereotelevision vision system, according to the invention previously on the face of the patient applied white paint to reference point, enter the first chewing sample, resistant to saliva, when shooting record the movement of reference points in the process of chewing samples and the obtained images to determine their coordinates, then the patient is given the second and third chewable samples that are resistant to saliva, and for each of them the shooting process and determine the coordinates of the reference points again, then the obtained coordinates are building graphics damped harmonic oscillations and their exponential components, the coordinates of the reference points on which serves to automatically orthopedic articulator to reproduce the movements of the lower jaw.

The invention is illustrated in the drawing, in which figure 1 shows the face of a patient with marked reference points, figure 2 shows the range of devices that implement this method, figure 3 shows the undamped harmonic oscillations, built in the coordinate dependence of the amplitude of jaw movement in a vertical plane is t (u, mm) from the number of frame shooting (no frame), resulting from the introduction of the patient first chewing samples representing deployed the trajectory of the reference points marked on the skin of the patient and are defined by the software that processes the signal from the cameras, figure 4 shows the reference point 6 of the exponential component of the process of mastication 7 and decaying harmonic oscillations 8, built in the coordinate dependence of the amplitude of jaw movement in a vertical plane (in mm) from the number of frame shooting (no frame), resulting from the introduction of the second patient chewing samples representing deployed trajectory reference points, figure 5 - reference point 6 of the exponential component of the 7 process of chewing and decaying harmonic oscillations 8 process of chewing, built in the coordinate dependence of the amplitude of jaw movement in a vertical plane (in mm) from the number of frame shooting (no frame), which characterizes the introduction of the third patient chewing samples representing deployed the trajectory of the reference points, figure 6 shows a graph of the relationship between the amount of chewing sample (V, cm3) and the amplitude of motion of the jaw (mm)figure 7 shows the automatic orthopedic articulator designed to do the Oia movements of the lower jaw.

The system that implements this method includes: three video 1, video capture card 2, video 3, computer 4 software (program selection circuits and determine the coordinates of reference points), the printer 5, orthopedic automatic articulator.

The method is implemented as follows: on the face of the white paint applied to the reference points, as shown in figure 1, after which the patient is given chewing samples of three types. The first chewing test, resistant to saliva (test product in the form of chewing gum)that the patient chews for at least 30 seconds, the second chewing sample, not resistant to saliva, the linear dimensions of which 1×1×1 cm, which the patient chews until its complete dissolution, chewing third test, not resistant to saliva, linear size of which is increased at least two fold relative to the size of the second sample, as it is at this magnification sizes become noticeable differences in the trajectories of the reference points. This sample patient chews also to its complete dissolution. Moving reference points in the process of chewing the first sample is recorded by the camera 1 shown in figure 2, the image through which charge conjugation 2 is fed to the computer 4. The image is then handles the I, and coordinate the movement of reference points on which to build and display on the monitor 3 is a graph undamped harmonic oscillations, shown in figure 3, after which the patient is given the second and third chewable samples that are resistant to saliva, and the shooting process and determine the coordinates of reference points is repeated for each of them. Next, on the obtained coordinates are building graphics damped harmonic oscillation and exponential components. The coordinates of the reference points 6 exponential components of the process of mastication 7 and decaying harmonic oscillations 8, resulting from the introduction of the patient the second and third chewable samples, shown in figure 4 for the second sample, and figure 5 for the third sample.

Figure 6 shows a graph of the relationship between the amount of chewing sample (V, cm3) and the amplitude of motion of the jaw (mm), which is based on the 6 points 4 and 5, the amount of chewing samples are known in advance.

The resulting coordinates are then served on automatic orthopedic articulator shown in Fig.7, consisting of a base 9, the actuators 10 are attached to a hinged connection 11 to the mobile platform 12 on which is fixed a cast of the patient 13. In more detail, the device described in [3]. When submitting coordinate the articulator reproduces the movement of the lower jaw of the patient. is also obtained coordinates and graphs, shown in figure 3, figure 4 and figure 5, output on print.

Compared with the known methods, this method increases the accuracy of measurement dimensional surface of the lower jaw of one order of magnitude and reduces the time required for image processing. Reproduction of the movements of the lower jaw of the patient by the articulator and printed graphics help the doctor with a high degree of accuracy to detect the defects of dentition of the patient and determine the path of their early elimination.

Sources of information

1. RF patent №2065133 / Vasiliev V.F., Evenwhen V.M., cocks SV - Way automated measurement of coordinates of points of the external environment to build three-dimensional models in stereotelevision the vision system / publ. 10.08.1996, application No. 93033305/28 from 28.06.1993, G 01 11/26.

2. RF patent №2204959 / Bergersen Earl O. - a Computerized device for orthodontic diagnosis and issuing corrective appliances / publ. 27.05.2003, application No. 2000113851/14 from 28.10.1998, And 61 With 3/00.

3. RF patent №2263571 / Litvinenko A.M. - Industrial robot / publ. 10.11.2005, application No. 2004107075/02 from 09.03.2004, IPC725 J 11/00; And 61 C 11/00.

Method of measurement parameters volumetric surface of the lower jaw of a person, including the shooting of a human face using video cameras and measurement of parameters jaws after the respective processing of obtained images using the computer, wherein the pre-face patient put white paint reference point, enter the first chewing sample, resistant to saliva, when shooting record the movement of reference points in the process of chewing samples and the obtained images to determine their coordinates, then the patient is given the second and third chewable samples that are resistant to saliva, and for each of them the shooting process and determine the coordinates of the reference points again, then on the obtained coordinates are building graphics damped harmonic oscillations and their exponential components, the coordinates of the reference points on which serves to automatically orthopedic articulator to reproduce movements the lower jaw.



 

Same patents:

FIELD: medicine.

SUBSTANCE: method involves measuring and recording articulation and incisor paths sagittal shift and transverse movements. Mandibular movements are recorded by means of special-purpose device. The articulation, incisor and sagittal paths are determined by means of the first gnathotransducer recording maximum right and left shifts of the mandible. The first gnathotransducer operating, the second one is idle. The gnathotransducers transform spatial displacements of the mandible into electric signals, register and save them. Device has T-shaped metal plates having upper parts rigidly connected to head phones and the lower parts to occipital and subocular arch, two rheostat gnathotransducer fixed on subocular arch in perpendicular to each other and connected to recording device and power supply source via switch, rigid sling having threaded bushing, probe and lock-nut connected to the T-shaped metal plates by means of rubber tie-rods.

EFFECT: high operation accuracy; improved dental prosthesis quality.

2 cl, 1 dwg

FIELD: medicine.

SUBSTANCE: method involves recording graphic readings. Patient does sagittal and then transverse mandible movements simultaneously recorded with two parallel graphic lines. Maximum sagittal and then transverse mandible movements are recorded from central occlusion position distinguished in that the patient keeps sliding contact between maxillary and mandibular teeth, or maximum movements are recorded in temporomandibular articulation with dentition rows separated to minimum. Sagittal movement amplitudes being symmetric and transverse mandible movements line being immobile, norm is to be diagnosed. Amplitude asymmetry or transformed parallel dimension being the case, functional occlusion disorder or temporomandibular articulation pathology is to be diagnosed.

EFFECT: high accuracy of diagnosis.

2 dwg

The invention relates to dentistry, can be used to diagnose supporting and retaining apparatus of the tooth or tissue surrounding the implant

The invention relates to medicine, namely to the dentist, and is intended for recording movements of the lower jaw

The invention relates to medicine, namely to orthodontic dentistry, to methods and devices for determining the pressure of the active elements of orthodontic appliances

The invention relates to medicine, in particular to the dentist, and can be used for registration noise in diseases of the temporomandibular joint (TMJ)

FIELD: medicine; gastroenterology.

SUBSTANCE: calendar and biologic age of patient are determined as well as his/her weight, height and quality of life factors. Then probability of development of ulcerous disease is calculated from relations of P1 = (eD1/ (eD1+eD2)) x100%, P2= (eD2/ (eD1+eD2)) x100%, where e is exponential coefficient, number of natural logarithmic base, equal to -2,71; D1 is sum of factors multiplied by B coefficient of discriminant functions for patient, D2 is sum of factors multiplied by A coefficient of discriminant functions for healthy people. Values of A and B coefficients are chosen from "Discriminant functions' coefficients" spreadsheet. In case P1>P2, risk of development of stomach and duodenum ulcerous disease is predicted.

EFFECT: easier prediction abilities; reduced number of complications.

1 tbl, 2 ex

FIELD: medicine, cardiovascular surgery.

SUBSTANCE: one should carry out left-hand ventriculography, measure end-diastolic, end-systolic volumes, ejection fraction, ejection fraction of contracting segment. Additionally, one should measure basal-apical size of left ventricle without capturing aneurysm, the largest cross-sectional diameter of left ventricle without capturing aneurysm into ventricular systole and diastole. One should repeatedly conduct ventriculography in left-hand oblique caudal (45 degrees and 50 degrees) projection. One should chooses tactics for operations - myocardial revascularization and dissection of aneurysm without a patch or with patch plasty - by the values of necessary and predicted stroke and end-diastolic volumes. At the value of predicted end-diastolic volume being below the value of necessary end-diastolic one, or the value of predicted stroke volume being below the value of necessary stroke one should carry out myocardial revascularization and dissection of aneurysm at patch plasty. Application of the innovation enables to objectively detect the method of left-ventricular plasty before operation.

EFFECT: higher accuracy of prediction.

3 dwg, 2 ex

FIELD: medicine; medical engineering.

SUBSTANCE: method involves measuring anatomical bone length on intact extremity from the place the pin is to be introduced to the place its distal level is supposed to be positioned. Anatomical bone curvature height is measured next to it in the middle point of length and the received values are summed. Device has linear scale for measuring anatomical bone length and another linear scale for measuring anatomical bone curvature height that is movable and arranged in perpendicular to the first one.

EFFECT: maximum medullary canal fill allover anatomical bone length; high osteosynthesis stability.

3 cl, 3 dwg

FIELD: medicine.

SUBSTANCE: method involves determining thyroid gland hormone of triiodothyronine (T3 in IU/l) and thyroxin (T4 in IU/l), pituitary hormones - thyrotropic hormone (TTH in IU/l), follicle-stimulating hormone (FSH in IU/l) and luteinizing hormone (LH in IU/l) concentration using radio isotope method and physical adolescent growth and development level with somatometric type being equal to 1 in microsomatic type cases, 2 in mesosomatic type cases and 3 in macrosomatic type cases. Discriminant function is determined in male adolescent case as D=19.535x(T3)+3.973x(T4)-27.38x(TTH)-11.028x(1.2 or 3)-307.473x(FSH)-17.585x(LH). The discriminant function value D>116.44 being the case, worsening bronchial asthma clinical course is predicted. D<116.44 being the case, bronchial improving asthma clinical course is predicted. Discriminant function is determined in female adolescent case as D=-4.908x(T3)-0.052x(T4)-0.355x(TTH)-3.166x(1.2 or 3)-0.769x(FSH)-0.144x(LH). The discriminant function value D>-24.23 being the case, worsening bronchial asthma clinical course is predicted. D<-24.23 being the case, improving bronchial asthma clinical course is predicted.

EFFECT: high accuracy in detecting severe bronchial asthma adolescent risk group.

FIELD: medicine, social hygiene, health care organization, pediatrics, hygiene, juvenile endocrinology.

SUBSTANCE: one should detect Rhorer's weight-height index (IR) by the following formula: W/H3 kg/cu. cm, where W - body weight (kg), H - body height (cm). At IR value ranged 10.7-13.7 kg/cu. cm it is possible to diagnose harmonic, normal or mean physical development in children, at IR being below 10.7 kg/cu. cm physical development should be considered as low, and at IR value being above 13.7 kg/cu. cm - one should diagnose high physical development in children and teenagers.

EFFECT: higher accuracy of evaluation.

3 ex

FIELD: medicine.

SUBSTANCE: method involves marking two points mapping distal coccyx and symphysis part positions. Ruler is applied to the points over the imaginary coccygeosymphyseal line between the points on skin. 10 cm long metal rod of 1.9 mm diameter having ticks from 1cm to 3 cm is introduced into anal canal. Anococcygeal angle is measured between the ruler and the metal rod. One angle side is segment binding a point belonging to distal coccyx part projection to anal canal axis and the other side is the continuation of this axis above anodermal surface. The coccygeal angle magnitude being greater than 90°, rectum obturation apparatus disorder is to be diagnosed.

EFFECT: high accuracy of early stage diagnosis.

1 dwg

FIELD: medicine.

SUBSTANCE: method involves marking two points mapping distal coccyx and symphysis part positions. Ruler is applied to the points over the imaginary coccygeosymphyseal line. Then, another ruler is taken for measuring anococcygeosymphyseal distance from external anal orifice point to the coccygeosymphyseal line in rest state and in straining effort state. The distance being from 0 to 1 cm large both in rest state and in straining effort state, norm is to be diagnosed. The anococcygeosymphyseal distance value being higher, perineal descent syndrome is considered to be the case.

EFFECT: avoided X-ray examination.

1 dwg

FIELD: medicine.

SUBSTANCE: method involves distinguishing four degrees in sexual development delay. Minimum sexual development delay degree is characterized by the following parameters. Uterus width and thickness corresponds to age-specific norm. Median uterine M-echo is recorded. Uterus neck is differentiated from uterus body with angle between them being well distinguished. All ovarian dimensions correspond to norm. Light sexual development delay degree is characterized as follows. All uterine dimensions are two years smaller, when compared to age-specific norm. Median uterine M-echo is recorded. Uterus neck is differentiated from the uterus body. Ovary length and thickness correspond to age-specific norm. Moderate sexual development delay degree is characterized as follows. All uterine dimensions are three-four years smaller, when compared to age-specific norm. Median uterine M-echo and reduced ovary length and thickness are recorded. Severe sexual development delay degree is characterized as follows. All uterine dimensions are six-eight years smaller, when compared to age-specific norm. No uterus neck is differentiation from the uterus body is available. No median uterine M-echo is recorded. Ratio coefficient of length and anteroposterior dimension of uterine body to length and anteroposterior dimension of uterus neck is additionally determined in each sexual development delay degree case. Uterine blood vessel lumen, ovary echostructure as number, diameter of minimum and maximum follicles in them are determined in energetic Doppler mapping mode. Uterus length having 1-2 years delay when compared to norm, ratio coefficient of uterus and neck dimensions being equal to 1.5-1.7, uterine blood vessel lumen being equal to 5-6 mm, follicle number being in norm, diameter of minimum and maximum follicles having 1-2 years delay when compared to age-specific norm, minimum sexual development delay degree is diagnosed (IA). Uterine blood vessel lumen being equal to 4-5 mm, coefficient of uterus and neck dimensions being equal to 1.3-1.5, follicle number being in norm, ovary width having 1-2 years delay when compared to norm, minimum follicles having 2 years delay when compared to age-specific norm, maximum follicles having 2-3 years delay, light sexual development delay degree is diagnosed (IB). All uterine dimensions being three-four years smaller, when compared to age-specific norm, uterus neck being differentiated from uterus body with angle between them being poorly distinguished, uterine blood vessel lumen being equal to 2-3 mm, ratio coefficient of uterus and neck dimensions being equal to 1.2-1.5, reduced follicle number having 1-2 years delay when compared to age-specific norm, ovary width having 2-3 years delay when compared to norm, minimum follicles diameter having 2 years delay when compared to age-specific norm, maximum follicles diameter having 2-3 years delay, moderate sexual development delay degree is diagnosed (II). Uterine blood vessel lumen diameter being equal to 1 mm, ovaries dimensions delay being of 2-3 years with lacking follicular apparatus in them, severe sexual development delay degree is diagnosed (III).

EFFECT: high accuracy and self-descriptiveness of the method.

FIELD: medicine, obstetrics.

SUBSTANCE: one should carry out clinical and ultrasound uterine testing, moreover, additionally, on the 3d and the 7th d of post-operational period it is necessary to detect conditional area of uterine sutures, systolo-diastolic ratio (SDR), percentage content of lymphocytes against total amount of cells in uterine aspirate to establish protein coefficient (PC) and leukocytic index of intoxication (LII) being necessary to state upon prognostic coefficients F1 and F2 by the following formulas: F1 = -6726.59 + 27.58 x K1 + 21.84 x K2 - 0.03 x K3 + 93.36 x K4 + 156.47 x K5 - 4.21 x K6 + 760.82 x K7 + 978.46 x K8 + 11.47 x K9 + 96.40 x K10 + 306.40 x K11 + 321.13 x K12 - 24.32 x K13 - 50.56 x K14; F2 = -57.81.76 + 35.89 x K1 + 26.50 x K2 + 0.00 x K3 + 96.81 x K4 + 146.78 x K5 - 3.89 x K6 + 500.76 x K7 + 651.60 x K8 + 4.83 x K9 + 34.83 x K10 + 276.16 x K11 + 535.35 x K12 - 14.26 x K13 - 17.28 x K14, where digital values - the constants of discriminant equation and discriminant coefficients, K1,2...14 - gradations and digital values of post-operational period flow: K1 - the length of uterine sutures on the 3d d, K2 - the width of uterine sutures on the 3d d, K3 - conditional area of sutures on the 3d d, K4 - the length of uterine sutures on the 7th d, K5 - the width of uterine sutures on the 7th d, K6 - conditional area of sutures on the 7th d, K7 - SDR right-hand on the 7th d, K8 - SDR left-hand on the 7th d, K9 - percentage content of lymphocytes against the total amount of cells in uterine aspirate on the 3d d, K10 - percentage content of lymphocytes against the total amount of cells in uterine aspirate on the 7th d, K11 - PC on the 3d d, K12 - PC on the 7th d, K13 - LII on the 3d d, K14 - LII on the 7th d, and at F1>F2 one should predict favorable nature in recovery of uterine wound and at F1<F2 - unfavorable nature.

EFFECT: higher accuracy and efficiency of evaluation.

2 ex

FIELD: veterinary science.

SUBSTANCE: during the first 1-3 h of life one should measure umbilical diameter and at its diameter being above 18 mm it is possible to diagnose earlier manifestation of omphalitis that, in its turn, enables to perform antibacterial therapy in due time and avoid mortality in animals.

EFFECT: higher accuracy of diagnostics.

1 ex, 1 tbl

FIELD: medicine, cardiology, endocrinology, gynecology.

SUBSTANCE: one should detect informational-valuable signs of patient's state, such as either the presence or absence of hypertonic disease and uterine extirpation together with adnexa, the value of body weight index, predominance of disorders according to modified menopausal index (MMI)such as autonomic, metabolic-endocrine or psycho-emotional ones, the type of metabolic structures of blood serum, moreover, it is necessary to echocardiographically detect stroke volume, cardiac index and systemic vascular resistance (SVR), at ultrasound testing one should detect maximal linear rate of circulation (LRC max) by medial cerebral artery and thyroid alterations, rheovasographically one should detect specific circulation (SC) of shins, at testing laser doppler flowmetry one should detect microcirculation index, biochemically it is necessary to detect the value of beta-adrenoreactivity, cholesterol level and that of B-lipoproteides, crystallographically - the presence of serotonin and dopamine crystals, due to immunoenzymatic assay on should detect the values by Table 1 and then after obtaining the values of diagnostic coefficients of every parameter it is necessary to summarize them and obtain diagnostic index (DI), at its value being below 10 one should state no alteration, at its value 10-10 - undetermined state, at its value being 21-30 - the 2nd severity degree of disorders, and at DI value being above 31 one should state the 3d severity degree of disorders available.

EFFECT: higher accuracy of evaluation.

5 ex, 2 tbl

FIELD: medicine.

SUBSTANCE: method involves producing foot imprints on specially fixed flat-bed scanner capable to withstand human body weight load. Foot imprint processing is carried out by means of software for automating examination process. Operator marks foot image according to a pattern. The operator selects 12 key points with mouse unit and draws straight lines from point to point and calculates positions of calculatable points on foot image. Diagnostic values are calculated after having marked up the foot separately for anterior, median and posterior portions of the foot.

EFFECT: high diagnostic accuracy and accelerated examination.

4 dwg

FIELD: medicine.

SUBSTANCE: method involves taking foot imprint and outline picture, drawing bimalleolar line and determining longitudinal axis of the foot. To do it, transverse axis of internal ankle-bone is additionally drawn intersecting the longitudinal foot axis at right angle and the bimalleolar line at an angle of α corresponding to the magnitude of external ankle-bone displacement relative to internal ankle-bone of the tibia in its distal portion. Talocrural articulation center projection position is determined in intersecting the transverse internal ankle-bone axis at an angle of β corresponding to the magnitude of external ankle-bone displacement relative to the talocrural articulation center projection position. The external ankle-bone displacement relative to internal ankle-bone being equal to 10-15° and that of the talocrural articulation center projection to 20-30°, tibia position is considered to be normal in the distal portion of tibia. The external ankle-bone displacement relative to internal ankle-bone being equal to 15.5-20° and that of the talocrural articulation center projection to 31-40°, moderate displacement of tibia position in the distal portion of tibia is considered to be the case. The external ankle-bone displacement relative to internal ankle-bone being greater than 20,5° and that of the talocrural articulation center projection greater than 41°, marked displacement of tibia position in the distal portion of tibia is considered to be the case.

EFFECT: high accuracy of the method.

3 dwg

FIELD: medicine, neurology.

SUBSTANCE: the method deals with detecting an interferon status followed by medicinal therapy. Moreover, additionally one should determine patient's body area, and at observed degree I of interferon system suppression it is necessary to prescribe "Antilympholin Kz" preparation as medicinal therapy intravenously by drops at course dosage being (0.5-0.6)g x S, where S - patient's body area, every other day, and thioctacide preparation at the dosage of 300-600 mg intravenously by drops daily at a 6-8-d-long course. In case of degrees II and III of interferon system suppression one should prescribe "Antilympholin Kz" at course dosage being 0.4-0.5 g/sq. m and 0.3 -.4 g/sq. m, as for thioctacide - it should be applied at the dosage of 600-900 mg and 900-1200 mg, correspondingly. The method enables to selectively affect the immune system efficiently due to combined prescription of an immunimodulator and a preparation that accelerates its introduction at suppressing the activity of proinflammatory cytokines that prolongs disease remission due to preventing the development of immunological disorders.

EFFECT: higher efficiency of therapy.

3 ex

FIELD: medicine, oncourology.

SUBSTANCE: one should choose the number of points for biopsy : 1 point of biopsy/5 cu. cm of an organ, then it is necessary to detect the portion of cancerous parenchyma in bioptates in percentage morphometrically due to analyzing of not less than 1000 points minimum in 5 sections of preparation, the volume of cancerous parenchyma in an organ should be detected by the following formula:

where X - average value for the portion of cancerous parenchyma in an organ, in %; ΣA - the portion of cancerous parenchyma in bioptate in %; N - the number of bioptates. The present innovation enables to detect cancerous parenchyma both in case of interrupted and diffused forms of prostatic cancer.

EFFECT: higher accuracy of detection.

1 dwg, 3 ex

Up!