Method for recording mandible movements

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

 

The invention relates to medicine, namely to prosthodontics.

The production of high-quality fixed and removable dentures with full or partial adentia impossible without accurate measurement and recording movements of the lower jaw: articular and tool paths, sagittal shear, transverse movements. Further reproduction of these movements in the articulator allows in each case to take into account individual physical characteristics and fabricate dentures, meeting modern requirements and not bring inconvenience to patients during operation.

A known method for recording movements of the lower jaw (U.S. Pat. No. 2139011 of the Russian Federation, IPC 6 And 61 p 11/00 Individual articulator, the way its setup and positioning models toothless jaws in Miramont space", bull. 28, 1998) using the profile alertthingy head. Profile teleroentgenogram perform in the horizontal direction of x-rays in the position of the subject sitting with diagnostic x-ray units.

The disadvantage of this method is the difficulty of protecting the patient from exposure to x-rays (the need to cover the patient's apron from lead-impregnated rubber, installing aluminum filter etc).

There are ways which determine the severity of the sagittal and transversal occlusal curves (U.S. Pat. No. 2218127 of the Russian Federation, IPC 7 And 61 With 19/04 "method for determining the severity of the sagittal and transversal occlusal curves and device for its implementation", bull. 34, 2003), in which the underlying reference system is chosen the Frankfurt horizontal, fix it using a face-bow and consistently for each tooth measured the distance from the point the Central fissure and the tops of the bumps to the front of the arc. Using data from these measurements, conduct their mathematical processing using rules direct triangle and trigonometric functions and through the combination of these indicators for all of the investigated teeth characterize individual the manifestation of the sagittal and transversal occlusal curves.

The disadvantage of this method lies in the fact that in an ordinary clinic with a large flow of patients to the dentist quite difficult to make all necessary calculations and the process of making dentures may be unreasonably applied.

There is a method of determining the optimal height of the teeth (U.S. Pat. No. 2070001 of the Russian Federation, IPC 6 And 61 With 19/04 "Method of determining the optimal height of bite", bul, 1996), which includes registration electromyographic impulses temporal muscles of the patient at different positions of the lower jaw. For this purpose between the jaws install the spacers of different heights, and the pulses recorded in each strip. The results obtained compare and choose the best height of the bite when the position of the strip corresponding to the lowest intensity electromyographic impulses.

The disadvantage of this method is, some limitations apply.

The closest, according to the authors, analogue (prototype) is a method for recording movements of the lower jaw using a face-bow (V. Kopeikin. and other "Prosthodontic technique", M, Medicine, 1988, p.51-55).

When using this method, a face-bow. determine the Central value of the edentulous jaw, the angle of the side cutting path, the angle of the sagittal articular path and location of plaster models in the articulator space.

The Central value of the edentulous jaw set with a wax or plastic bases with occlusal rollers. Pre pin is stuck occlusive roller basis of the upper jaw in nosochnoy plane and determine the height of the lower section of the face. For recording lateral cutting path in the occlusal surface of the roller base of the mandible at the same level in the anterior attach the metal plate. To wax occlusal roller basis of the upper jaw in the area of the anterior teeth with vestibu Arnau side attach the metal plate with the pin, mounted on a spring. A metal plate attached to the occlusive platen base of the lower jaw, covered with a layer of melted black wax. For writing on wax release pin spring fixed on the basis of the upper jaw bases is introduced into the mouth and ask the patient to move the jaw to the left and to the right. In the lateral movements of the mandible on wax metal plate pin plotted the angle, the top of which is the center position of the mandible relative to the upper, and the formed angle is the angle of the side cutting path (Gothic corner).

Record the sagittal articular path also produce on occlusal rollers using a face-bow, attached to the occlusive roller of the lower jaw. Record the sagittal articular path produced pencils on paper. Leads strengthened in the area of joint heads, then offer the patient sliding occlusal movements to move the lower jaw. After recording the movements of the lower jaw they are transferred to the articulator to simulate.

The disadvantage of this method is a certain lack of accurate recording of movements of the lower jaw with the use of pencils and a face-bow due to the average location of the arc, and that this method can only be applied in the manufacture of the memory the data of the prosthesis in the absence of teeth.

The task of the invention is to improve the accuracy, reduce labor and time costs when recording movements of the lower jaw, enabling the manufacture of high-quality dental prostheses taking into account the physiological characteristics of the patient for both full and partial adentia.

This is achieved by the fact that the headphones are rigidly connected with T-shaped metal plates which attach to the occipital and the zygomatic arch, zygomatic arch vzaimnoperpendikulyarnykh fix two rheostatic Gattatico connected via a switch to a recording device and a power source; chin impose rigid sling with a threaded sleeve, probe and lock nut and using a rubber rod is connected with a T-shaped metal plates. In the case of the edentulous jaw after the determination of the centric relation of the edentulous jaw with wax bases on the hot wax platen base of the mandible impose T-shaped metal tube with an internal diameter of 3.5 mm in accordance with the Central cutting line followed a tight closing of the jaws of the patient; the T-shaped metal tube without backlash insert metal pins rigidly fixed to the zygomatic arch, and then the zygomatic arch disconnect from the headphones and wax the new bases with T-shaped metal tubes are removed from the mouth.

In the implementation of the proposed method (see the drawing) on the patient's head wearing headphones. Headphones 1 by means of nuts 2 and 3 on both sides connect with T-shaped metal plates 4, 5. After that, in the area of the chin sling set 6 with sleeve for probe 7, 8, and attach it to the headphones through the upper section of the T-shaped plates rubber rods 9. In the lower part of the T-shaped plates attached occipital 10 and zygomatic 11 arc. Zygomatic arch runs along the edge of the lower jaw. On the zygomatic arch install two rheostatic Gattatico 12, which connect through the switch 13 to the power supply 14 and the recording device 15.

Gattatico attached to the mains through a transformer. The voltage is 12 Century Setting system for recording movements of the lower jaw and the connection to the mains must not take more than 5-6 minutes. Then in a sling insert the dipstick and down to the arm of the first Gattatico working on the Desk pull-out lower jaw (define articular, cutting and sagittal). Then the probe down to the arm of the second Gattatico, the first gnattali off. The second gnattali registers maximum shifts the lower jaw to the right and to the left (transverse motion). Disassembly registration system (headphone, occipital and zygomatic edugi and others) is in the reverse order and does not take a lot of time (2-3 minutes). The proposed method significantly reduces the complexity and time needed for recording movements of the lower jaw. After recording and transfer of data on the movements of the lower jaw in the articulator produce modeling and fabrication of dental prostheses by known methods.

Rheostat Gattatico used in the proposed method, convert the spatial movement of the lower jaw into electrical signals, which are recorded on the scale of the recording device and recorded. The sensor is a slide rheostat. Change the position of the mandible causes a change in the sliding contact of the rheostat, this changes the resistance and current in an electrical circuit. As the recording device can be used for the indicating device, such as a voltmeter, recorder with simultaneous recording data on paper or a personal computer. In the latter case using an analog-to-digital Converter changes the voltage in an electrical circuit when changing position of the lever Gattatico reproduced on a computer monitor to capture the full picture of the movements of the lower jaw.

T-shaped metal plates are used for rigid fixation of headphones, occipital and zygomatic arches. Malar and occipital arc made of a polymer material Sling is attached using rubber rods in the field of TMJ, that allows for recording movements of the lower jaw to accommodate the physical characteristics of each patient. T-shaped appendages connect with the zygomatic arch at an angle corresponding to the angle formed by the lower jaw and the line location of the temporomandibular joint. For most people, this angle is equal to 90-100°although in some cases it can be 160°. To account for this feature, on the zygomatic arch for mounting the T-shaped plates on both sides, there are three holes, through which you can set the desired angle in each case. To improve accuracy when placing the plaster models in Miramont space articulator using T-shaped metal tube with an internal diameter of 3.5 mm, which play the role of "memory".

The application of the proposed method of registration of the movements of the lower jaw allows to reduce by 50% the time required for recording movements of the lower jaw. Due to the fact that when you register the movements of the lower jaw take into account the individual characteristics of each patient, it is possible to increase the service life of the prosthesis in the absence of teeth 2-3 times, and the prosthesis does not cause discomfort to patients.

Example. Patient N. asked about the manufacture of dentures in the complete absence zu the s on the upper and lower jaws. In a patient with atrophy of the alveolar process and common functional disorders of dentition. The registration was performed movements of the lower jaw of the proposed method.

When you first visit the doctor put the patient head headphones with rubber bonusami, sling sleeve for probe, the occipital and the zygomatic arch. Slingshot rubber rods attached to the headphones through the T-shaped plate. Then to the bottom of the T-shaped plates doctor joined the occipital and the zygomatic arch. This procedure took 2-3 minutes After installation on the zygomatic arch rheostatic Gattatico and attach them to a power source and a recording device (switch device) registered and recorded the movement of the lower jaw. Disassembly of the system of registration was carried out in the reverse order, which amounted to 2-3 minutes In total per patient was spent 8-10 minutes

For simulation of the dental prosthesis used the articulator hinge-ellipse type SET (application No. 2004101366 from 21.01.2004 "Individual articulator"). The transfer recording movements of the lower jaw in the articulator was as follows: doctor with pins headphones were shooting rubber Biruli, pins headphones inserted into bushings are located at the edge of the articulator SET, which are also holes for the cotter pin. After you align the holes on azueta hard site. To the T-shaped plate headphones joins the zygomatic arch with the rheostat grattacieli. In the sleeve-rack mounted on the lower frame of the articulator inserted the T-shaped probe, which is brought alternately to the first and second Gattatico. For pointer-type instrument and recorded the results, the doctor sought the same articular progress in the articulator, as the patient, and recorded restrictive screws. The procedure was repeated for lateral movements. To configure articulator and prepare it for the work required 8-9 minutes

During the second visit, after the determination of the centric relation of the jaws with wax bases and cushions the doctor notes the location of wax bases with the rollers in the oral cavity of the patient using a "memory" and brings it leads, fixing them on the zygomatic arch. "Memory" is welded at a right angle hollow metal tube with an internal diameter of 3.5 mm, is used to determine the location of the plaster models in the articulator. Removing rubber beruche and connect the headphones to the articulator, the doctor in the wax bases introduces cut the plaster model so that they are freely housed in Miramont space. Further work on the prosthesis is carried out in a dental laboratory by the existing technology.

1. The method of registration DWI the response of the lower jaw when the prosthesis, including the measurement and registration of the joint and tool paths, saggitario shear and transverse movements, characterized in that the registration of movements of the mandible is performed using the device according to claim 2, in this joint, cutting and sagitally path determined by the first Gattatico, registering the maximum shifts the lower jaw to the right and to the left, and during operation of the first Gattatico second off, Gattatico transform of the spatial movement of the lower jaw into electrical signals, which measure and record.

2. The device for recording movements of the lower jaw, including T-shaped metal plate, the upper part of which is rigidly connected with headphones, but the bottom - occipital and zygomatic arches, two of rheostatic Gattatico that are attached to the zygomatic arch mutually perpendicular and connected through the switch to the recording device and the power supply, hard slingshot with a threaded sleeve, a probe and a nut connected with a rubber rod with T-shaped metal plates.



 

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FIELD: medicine.

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EFFECT: high accuracy of diagnosis.

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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.

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EFFECT: high operation accuracy; improved dental prosthesis quality.

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If indices of phonogram, heard behind the angle of mandible, in projection of internal carotid artery, with joined teeth, in Sp mode are: amplitude is higher than amplitude, heard in the area of the middle of thyroid cartilage on the anterior surface of sternum - common carotid artery, of yellow-orange colour, with height at the level of the middle and higher than the scale, as well as in case of increased indices of blow flow of eye arteries, and indices of phonogram, heard on eyebrow closer to bridge of nose with joined teeth in Sp mode are: amplitude from 0.09 and higher, of yellow-orange colour, height is at the level of the middle of the scale, as well as in case of presence of edemas of face and lower eyelid in the morning, which reduce towards evening, it is determined that prime cause of pain ischemic dysfunction of vascular genesis is hypertensive encephalopathy. 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If indices of phonogram, heard in front of tragus of ear on trago-orbital line with joined teeth in Sp mode are: amplitude from1.05, of yellow-orange colour, height is at the level of the middle of the scale and higher, and indices of phonogram, heard on brow closer to bridge of nose with joined teeth in Sp mode are: amplitude from 0.09 and higher, of yellow-orange colour, with height at the level of the middle of the scale, as well as with one-sided sharp pulsing pain in frontal-orbital-temporal area, accompanied by nausea, vomiting, intolerance of bright light, loud sounds, it is determined that prime cause of pain ischemic dysfunction of vascular genesis is migraine. If indices of phonogram, heard behind the angle of mandible with joined teeth in Sp mode are: amplitude from 0.09 and higher, of yellow-orange colour, with height at the level of the middle of the scale, as well as with presence of impairment of tone of mimic muscles of one half of face, it is determined that prime cause of pain ischemic dysfunction of vascular genesis is face nerve neuropathy. If indices of phonogram, heard on brow closer to bridge of nose with joined teeth, in Sp mode are: amplitude from 0.09, of yellow-orange colour, with height at the level of the middle of the scale, and indices of phonogram, heard in from of targus of ear on trago-orbital line with joined teeth in Sp mode are: amplitude from 1.05 and higher, of yellow-orange colour, with height at the level of the middle of the scale and higher, as well as in case of impairment of tone of masseteric and pterygoid muscles, it is determined that prime cause of pain pathology of neurogenic genesis is neuropathy of trigeminal nerve. If indices of phonogram, heard in subclavian fossa, with 2 cm indent from sternum to posterior part of neck with joined teeth in Sp mode are: amplitude from 0.01 to 0.09, of light blue -blue colour, with height at the level of the lower third of the scale, as well as in case of increase of amplitude of phonogram of vertebral artery of opposite side and in case of presence of osteochondrosis, it is determined that prime cause of pain pathology of neurogenic genesis is cervicalgia.

EFFECT: invention makes it possible to perform differential diagnostics of pain pathology of head and neck.

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FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to devices for examination of human body movement. In the first version device is made with possibility of installation on user's head in the area of its temporal and/or masticatory muscles and includes Hall sensor, at least, one permanent magnet, installed with possibility of mutual displacement in resiliently deformable case, and unit of control and information processing. In the second version device is provided with resilient arc, by means of which resiliently deformable case is pressed to user's head. Earphone for monitoring chewing movements in addition to Hall sensor, at least, one permanent magnet, installed in resiliently deformable case with possibility of mutual displacement in case of its resilient deformation, contains unit of control and information processing, connected with loudspeaker.

EFFECT: application of the invention makes it possible to increase quality of filtration of mechanical fluctuations, induced by chewing movements, at the background of other fluctuations.

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FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine, namely to dentistry, and is intended for determination of prosthetic plane projection on person's face. For this purpose device for registration of sagittal articular way, containing U-like shaped arc, passing from the area of temporo-mandibular joints to central maxillary incisors, is used. In the area of maxillary incisors arc is provided with paraocclusion fork. On each side of the arc, opposite the area of location of lower jaw joint, placed is one holder of registering device, made with possibility of contact with fixed on patient's face self-adhering millimetre paper. To find prosthetic plane projection on patient's face, Frankfurt horizontal line and line of lower jaw base are applied. Value of the first angle, formed by intersection of said lines, is determined. After that, by means of the claimed device determined is line of sagittal articular way, which together with line, representing prosthetic plane projection on patient's face, constitutes the second angle. Prosthetic plane projection on face is determined by formula: value of the second angle minus 102 equals value of the first angle.

EFFECT: method makes it possible to increase accuracy of prosthetic plane determination in form of its projection on patient's face due to application of dependence of 2 angles, where the first angle is formed by line of Frankfurt horizontal and line of lower jaw base, and the second angle by line of sagittal articular way and line representing prosthetic plane projection.

2 cl, 4 dwg

FIELD: medicine.

SUBSTANCE: invention relates to dentistry and is intended for application in orthopedic and therapeutic dentistry. Gypsum models of patient's jaws are made. Biomechanics of lower patient's jaw movements is studied. Angles of sagittal and transversal joint paths of patient are determined. Obtained values are marked on scale of joint units of articulator, which imitates individual movements of patient's lower jaw. Gypsum models are placed in claimed apparatus and ceramic thin half-crowns are modelled on them under constant control of interaction of dentitions and articulation contacts, proper to patient. Preparation of teeth before application of prosthesis according to method includes grounding off sharp enamel crests and processing teeth surface by airbrasive machine with powder with size 50 mcm under pressure 20 atm until dull surface of enamel appears.

EFFECT: method makes it possible to reduce trauma and preserve viability of teeth with prosthetic appliance due to elimination of preparation of hard tissues of said teeth.

2 dwg, 1 ex

FIELD: manufacturing technology.

SUBSTANCE: group of inventions includes occlusive yoke with determination of spatial position, device for upper jaw model spatial positioning and method of upper jaw position spatial transfer taking into account individual patient's parameters, refers to prosthetic dentistry and can be used for precise clinically determined properly upper jaw model positioning in articulator. Occlusal yoke with spatial position determination represents plate, used for evaluation of upper jaw denture occlusal plane topography. Plate is made with intraoral part in form of U-shaped element, bearing distal portions and equipped with handle, which is plate proximal part, bearing yoke positioning indicator relative to upper jaw denture along middle-sagittal line. Occlusal yoke is equipped with position determining sensor, arranged on plate proximal part. Yoke positioning indicator relative to upper jaw denture is made in form of projection or recess on plate surface in section between said sensor arrangement point and U-shaped plate element made with recording material retention facilities for teeth impression, gums and palatal surface.

EFFECT: invention increases accuracy of upper jaw location in articulator relative to articulator joint mechanism, considered as human maxillo-temporal joint.

11 cl, 6 dwg

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