Method of determining morphofunctional preservation of dentoalveolar apparatus

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to dentistry, and is intended for determination of morphofunctional preservation of dentoalveolar apparatus. X-ray examination of patient is performed. X-ray image is used to determine degree of alveolus wall reduction around each tooth. Depending on reduction degree each tooth is assigned corresponding share of participation in chewing function DAA, determined with account of area of its root surface preserving normal contact with alveolus walls via ligamentous apparatus. If examined tooth is in contact with two teeth-antagonists, its share in chewing function is taken into account completely, if only with one - reduced twofold. If examined tooth has no contacts with teeth-antagonists or reduction of alveolus walls increases 3-d degree, its share of participation in realisation of chewing function is not taken into account. All shares of participation are summed up and morphofunctional preservation of DAA is evaluated in percent in comparison with the norm, taken as 100%.

EFFECT: method makes it possible to increase accuracy of static determination of morphofunctional preservation of DAA due to determination of share of participation of each separate tooth in chewing function.

3 tbl, 1 ex

 

The invention relates to medicine, namely to the dentist, and can be used to determine the structural and functional integrity of dentoalveolar apparatus (SCA).

Development of methods for determining the structural and functional integrity of SCH required for a forensic medical labor examination of epidemiological studies is the actual problem in dentistry, which have been studied by many clinicians-researchers.

Known for dynamic and static methods for the determination of structural and functional preservation of the functional state of ZCHA [V.N. trezubov, A.S. Shcherbakov, Mishnev L.M. Prosthetic dentistry (faculty course). Textbook for medical schools. - 7th ed., revised and enlarged extra - SPb. Folio, 2005 - 592 C.]. The essence of dynamic methods is to assess the degree of grinding nuts (forest, almond, coconut) standard weight for a certain number of chewing movements or until a swallowing reflex, evaluation of the endurance of the periodontium to external power through gadodiamide [Conosco D.P. Functional assessment of the supporting structures of the tooth and its importance in the clinic of orthopedic dentistry. Diss. Prof. the honey. Sciences. M., 1964, s].

However, dynamic methods are rather time-consuming. Data received by gnadenkapelle, would and used to develop the static methods of determining the state of the chewing function of SCA.

There is a method of determining the structural and functional integrity of SCA, the essence of which consists in determining the percentage of participation of individual teeth in the implementation of the chewing function of SCA their subsequent summation [Butelman A.I., Benin BN. Prosthetic dentistry. - Moscow: Medgiz, 1951, - s].

The disadvantage of this method is that the share of the teeth-antagonists in intact masticatory apparatus is accepted by the authors are the same as for the teeth in contact with one tooth-antagonist, and the teeth in contact with two teeth-antagonists. In addition, when estimating the share of participation of the individual teeth in the implementation of the chewing function is not taken into account the condition of the periodontium - grade lesions of the restraint apparatus of the tooth.

There is a method of determining the structural and functional integrity of SCA that uses static accounting system of the state of the supporting structures of the tooth based on gnathodinamometria data Haber [Courland VY Prosthetic dentistry. M.: Medicine, 1977, p.56]. This method adopted by the authors for the prototype.

It should be noted that the coefficients endurance periodontal teeth, calculated by gnathodinamometria data Haber, questionable in their accuracy because gadodiamide measures the endurance of the periodontium only the vertical direction. Endurance periodontal same tooth varies in different individuals and changes with age. It is determined by the shape and size of root surfaces, which are different in different teeth.

The technical result of the invention is to improve the accuracy of determining the state of the structural and functional integrity of SCA by identifying the share of individual teeth in the chewing function of SCA taking into account the area of the contact surface of its root with the wall of the alveoli with the appropriate degree of reduction.

This result is achieved in that in the known method of assessing structural and functional preservation of the dental-maxillary apparatus by x-ray examination, including determination of the share of each tooth in the chewing function and subsequent summation, according to the invention radiograph determine the degree of reduction of the walls of the alveoli around each tooth and determine the share of its participation in the chewing function depending on the area of the contact surface of the tooth root with the wall of the alveoli, considering that:

in the absence of reduction of the share is for teeth 18-28 - 7,4%, 17-27 - 9,1%, 16-26 - 9,5%, 15-25 - 2,2%, 14-24 - 2,2%, 13-23%and 2.7%, 12-22 - 1,7%, 11-21 - 2,1%, 38-48 - 5,4%, 37-47%and 6.2%, 36-46 - 4,8%, 35-45%and 2.7%, 34-44 - 1,8%, 33-43 - 2,5%, 32-42 - 1,1%, 31-41 - 1,4%,

with 1 degree of reduction of the share is for teeth 18-28 - 4,16%, 17-27 - 5,1%, 16-26 - ,3%, 15-25 - 1,24%, 14-24 - 1,3%, 13-23 - 1,53%, 12-22 - 0,95%, 11-21 - 1,18%, 38-48 totaling 3.04%, 37-47 - 3,49%, 36-46 - 3,5%, 35-45%or 1.5%, 34-44 -1,2%, 33-43 - 1,4%, 32-42 - 0,62%, 31-41 - 0,79%,

at the 2nd degree of reduction of the share is for teeth 18-28 is 1.86%, 17-27 - 2,3%, 16-26 - 2,38%, 15-25 is 0.55%, 14-24 is 0.55%, 13-23 - 0,67%, 12-22 -0,42%, 11-21 - 0,5%, 38-48 - 1,35%, 37-47 - 1,55%, 36-46 - 1,6%, 35-45 - 0,67%, 34-44 - 0,5%, 33-43 - 0,62%, 32-42 - 0,27%, 31-41 - 0,35%,

with 3 degrees of reduction of the share is for teeth 18-28 - 0,46%, 17-27 - 0,57%, 16-26 - 0,61%, 15-25 to 0.14%, 14-24 to 0.14%, 13-23 - 0,17%, 12-22 - 0,1%, 11-21 - 0,1%, 38-48 - 0,34%, 37-47 to 0.39%, 36-46 - 0,4%, 35-45 - 0,17%, 34-44 - 0,13%, 33-43 - 0,15%, 32-42 - 0,07%, 31-41 - 0,09%, with occlusal contact of the investigated teeth with one tooth-antagonist share reduced by half, in the absence of occlusal contacts with teeth-antagonists or when a reduction of greater than 3 degrees share do not take into account.

As the main criteria when calculating the share of participation of the individual single-rooted teeth with intact periodontium in the implementation of the chewing function of SCA used the area of the root surface, and for multi-rooted teeth - the total surface area of their roots. For this data were used J..Woelfel [Woelfel J.., Souza Neto M.D. // Braz. Dent. J. - 1991. - V.2, N1. - P.45-50], obtained in the measurement of the main parameters 4472 permanent teeth: root length; mesio-distal, vestibular-oral size of the root in the cervical area of the tooth (table 1).

Table 1
Setting rootThe size of the root of the teeth of the upper jaw
Teeth11-2112-2213-2314-2415-2516-2617-2718-28
h - root length13,0the 13.416,5the 13.414,012,9*
12,2**
13,7***
12,9
12,1
13,5
10,8
the 10.1
11,2
MD-mesiodistally the size of the root6,4the 4.75,64,8the 4.77,97,67,2
VO - Vestibulo-oral size root6,45,87,68,28,110,710,7 10,4
Setting rootThe size of the root of the teeth of the lower jaw
Teeth31-4132-4233-4334-4435-4536-4637-4738-48
h - root length12,613,515,914.4V14,714,0
13,0
13,9
13,0
11,8
10,8
MD-mesiodistally the size of the root3,5the 3.85,24,85,09,29,19,2
VO - Vestibulo-oral size rootof 5.45,87,57,07,39,0,8 8,9
* - Anterior root, ** - distal root, *** - Palatine root

When calculating the surface area of the root took root as a cone whose height is equal to the average value of the length of the root and Foundation of ½ the amount mesiodistal, Vestibulo oral size of the root in the cervical area of the tooth.

For two and trehgorniy teeth was calculated in the same way the surface area of each of the roots, and then summarized the result.

To determine the percentage of participation in the chewing function of SCA each of the teeth take into account the degree of reduction of the walls of the alveoli: N - normal (absence or initial signs of reduction); (I) the extent of reduction of the walls of the alveoli is ¼ the length of the tooth root; II degree of reduction of the walls of the alveoli - ½ the length of the root; (III) the degree of reduction of the walls of the alveoli to ¾ the length of the tooth root. When the reduction of the walls of the alveoli above grade III (more than ¾ of the length of the root) to assess structural and functional integrity of SCA share of the tooth is not considered. In this regard, for each tooth was calculated surface area of the root in the reduction of the walls of the alveoli at¼,½, ¾ of its length. The results of these calculations are given in table 2.

The state of the chewing function of SCA realized with the presence of the AI 28 standing intact teeth without the presence of radiographic signs of marginal periodontal lesions, was taken as 100%. If one or all third molars erupted and took position in the dentition, ensuring their participation in the implementation of the chewing function of SCA, and if they are used as a support for orthopedic design that took into account their share in the calculation of structural and functional conservation of SCA.

In the absence of clear radiographic signs of lesion of periodontal original value of the shares of the tooth in the implementation of chewing function was taken as 100%. Then the expected share of the tooth in the implementation of the chewing function of SCA taking into account the degree of reduction of the walls of the alveoli, i.e. depending on the surface area of the root, preserving normal contact with the walls of the alveoli through the ligamentous apparatus. The data from these calculations are presented in table 3.

The method is carried out, for example, as follows.

After the x-ray examination of the patient determine the degree of reduction of the walls of the alveoli around each tooth. Depending on the degree of reduction of each tooth is assigned a corresponding interest in chewing function SCA defined taking into account the surface area of its root, preserving normal contact with the walls of the alveoli through the ligamentous apparatus. If the analyzed tooth in occlusal contact with two teeth-antagonists share the participants whom I am chewing account fully, if only one is reduced by half, and if the analyzed tooth has no occlusal contacts with teeth-antagonists or reduction of the walls of the alveoli is greater than 3 degree reduction of its share in the implementation of the chewing function does not take into account. Summarize all share and evaluate morphological and functional integrity of SCA in percent compared to the norm adopted for 100%.

The essence of the method is illustrated by the following clinical example.

Example 1. The patient Bondareva E.A., 50 years. Assessment was conducted structural and functional integrity of SCA of the proposed method.

After the x-ray examination were determined degree of reduction of the walls of the alveoli around each tooth. Depending on the degree of reduction of each tooth is assigned a corresponding interest in chewing function SCA:

13 tooth 1 tbsp. reduction -1,53%

12 tooth - 2 tbsp. reduction - 0,42%

11 tooth - 2 tbsp. reduction and 1 antagonist- 0,50%/2=0,25%

22 tooth 1 tbsp. reduction of 0.95%

23 tooth - 1 tbsp. reduction of 1.53%

34 tooth - 1 tbsp. reduction and 1 antagonist- 1,20%/2=0,60%

33 tooth - 2 tbsp. reduction of 0.62%

32 tooth 3 tbsp. reduction of 0.07%

42 tooth 3 tbsp. reduction of 0.07%

43 tooth - 2 tbsp. reduction of 0.62%

44 tooth - 1 tbsp. reduction of 1.20%

45 tooth - 1 tbsp. reduction and 1 antagonist- 1,50%/2=0,75%

Other existing teeth are not antagonists(37, 46, 47, 21), so are ignored.

Morph the functional integrity of SCA patient is 8,61%.

The proposed method of determining the structural and functional integrity of SCA was applied in the analysis of x-ray 510 patients. The method allows to increase the information content of static assessment of the functional safety of SCH. Appropriate its use in epidemiological studies, clinical examination of dental patients, forensics.

Method of assessment functional safety of dento-maxillary apparatus by x-ray examination, including determination of the share of each tooth in the chewing function and subsequent summation, characterized in that the radiograph to determine the degree of reduction of the walls of the alveoli around each tooth and determine the share of its participation in the chewing function depending on the area of the contact surface of the tooth root with the wall of the alveoli, considering that:
in the absence of reduction of the share is for teeth 18-28 - 7,4%, 17-27 - 9,1%, 16-26 - 9,5%, 15-25 - 2,2%, 14-24 - 2,2%, 13-23%and 2.7%, 12-22 -1,7%, 11-21 - 2,1%, 38-48 - 5,4%, 37-47%and 6.2%, 36-46 - 4,8%, 35-45%and 2.7%, 34-44 - 1,8%, 33-43 - 2,5%, 32-42 - 1,1%, 31-41 - 1,4%,
with 1 degree of reduction of the share is for teeth 18-28 - 4,16%, 17-27 - 5,1%, 16-26 - 5,3%, 15-25 - 1,24%, 14-24 - 1,3%, 13-23 - 1,53%, 12-22 - 0,95%, 11-21 - 1,18%, 38-48 totaling 3.04%, 37-47 - 3,49%, 36-46 - 3,5%, 35-45%or 1.5%, 34-44 - 1,2%, 33-43 - 1,4%, 32-42 - 0,62%, 31-41 - 0,79%,
at the 2nd degree of reduction of the share is for teeth 18-28 is 1.86%, 17-27 - 2,3%, 16-26 - 2,38%, 15-25 is 0.55%, 14-24 0,55%, 13-23 - 0,67%, 12-22 at 0.42%, 11-21 - 0,5%, 38-48 - 1,35%, 37-47 - 1,55%, 36-46 - 1,6%, 35-45 - 0,67%, 34-44 - 0,5%, 33-43 - 0,62%, 32-42 - 0,27%, 31-41 - 0,35%,
with 3 degrees of reduction of the share is for teeth 18-28 - 0,46%, 17-27 - 0,57%, 16-26 - 0,61%, 15-25 to 0.14%, 14-24 to 0.14%, 13-23 - 0,17%, 12-22 - 0,1%, 11-21 - 0,1%, 38-48 - 0,34%, 37-47 to 0.39%, 36-46 - 0,4%, 35-45 - 0,17%, 34-44 - 0,13%, 33-43 - 0,15%, 32-42 - 0,07%, 31-41 - 0,09%, with occlusal contact of the investigated teeth with one tooth-antagonist share reduced by half, in the absence of occlusal contacts with teeth-antagonists or when a reduction of greater than 3 degrees share do not take into account.



 

Same patents:

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely orthodontics, and aims at treating dentition and face disorders (DFD). It involves modelling the jaws, recording lateral and face teleradiography (TRG), orthopantomography (OPG), face and profile patient's photography. Masseteric and vocal dysfunctions are assessed. The lateral TRG is analysed by R.A.Fadeev and A.V.Kuzakova's technique. A first, second or third degree of manifestation assigned to each factor according to Table 1 'Quantitative Evaluation of Dentition and Face Disorders'. The degree of manifestation of each DFD factor provides a basis to plan a therapeutic approach to the patient. If all the factors or most of them shows the first degree of manifestation, orthodontic treatment without dental extraction is prescribed. All the factors or most of them corresponding to the second degree of manifestation requires orthodontic treatment with dental separation and extraction. Provided all the factors or most of them found in the third degree of manifestation, apparatus surgical management is applied.

EFFECT: method provides choosing the orthodontic approach ensured by the qualitative assessment of the DFD.

26 dwg, 15 tbl, 3 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to orthodontology and is intended for estimation of orthodontic treatment results. Lateral, frontal teleradiographs (TRG) of head, orthopantomogram (OPTG), profile and frontal photographs of patient's face, models of jaws, their analysis in sagittal, vertical and transversal directions are obtained. Disorders of masticatory-vocal apparatus, close positioning of teeth, their retention and adentia are estimated. In accordance with data of diagnostic table 1 determined is degree of expression of each sign of dentoalveolar-facial abnormality (DAA) - first, second or third - before beginning ortghodontic treatment and after its completion. Treatment efficiency is determined comparing degree of expression of DAA signs before and after treatment.

EFFECT: method makes it possible to estimate efficiency of orthodontic treatment by degree of expression of DAA signs before and after treatment.

26 dwg, 13 tbl, 3 ex

FIELD: medicine.

SUBSTANCE: invention is referred to the area of medicine, namely to orthodontia, and can be used for determination of expression degree of dentoalveolar anomaly features in sagittal, vertical and transversal directions. It allows to receive the models of jaws, lateral and anterioposterior teleradiograph (TRG), orthopantomogram (OPTG), anterioposterior and profile photos of the patient face, to determine the disruption of chewing and vocal apparatus. The analysis of lateral TRG is performed using the method by R.A. Fadeev and A.V.Kuzakova. To every sign in accordance with the data of table 1 - “Quantitative determination of dentoalveolar and facial anomalies” the first, second or third degree of expression is assigned.

EFFECT: method provides for determination of expression of dentoalveolar anomaly features: morphologic, occlusion, aesthetic, functional, teeth crowding, its retention and adentiion in sagittal, vertical and transversal directions due to quantitative determination of dentoalveolar and facial anomalies.

1 dwg, 9 dwg, 7 tbl, 3 ex

FIELD: medicine.

SUBSTANCE: invention relates to dental instruments and can be used for calibration of gutta-percha pins in obturation of tooth root canals. Technical result is achieved by the following: device for gutta-percha pin calibration contains scalpel and case with calibration holes. Calibrating holes are located along the length and are provided with indicators of diameter and length scale with millimeter points. Scalpel is made in form of spring-loaded from butt end plate of "П"-shaped section with bent inwards and at angle not exceeding 45° to base shelves. Plate is made from stainless elastic steel and is installed by means of shelves in L-shaped slots of lower part of base on its length with possibility to travel. On plate wall rectangular holes are made. Rectangular holes are located on its length evenly and in accordance with calibrating holes with cutting edge on one side.

EFFECT: increase of calibrated gutta-percha pin quality and therefore treatment quality, reduction of time required for rod calibration and tooth root canal treatment.

3 cl, 8 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely - to dentistry, reflex diagnostics, and can be used in diagnosing a dental status and treating a dentition. A method involves examination and evaluation of dentition parametres. It is followed with measuring electric resistance in the area of eight points on hands. The measured parametres are scored. Two score scales are made. A state of the vegetative nervous system is evaluated by the measured data in the area on a dorso-ulnar surface of a middle phalanx of a second finger in a junction of a head and a body (point No.1). A status of parasympathetic ganglions, a subcortical nucleus n.vagus is specified by the measured data in the area of the middle dorso-ulnar surface of a body of a second metacarpal bone (point No.2). The measured data observed in the area of the dorso-ulnar surface of the second metacarpal bone in a junction of the body and a base (point No.3) show a status of cerebral nerves. The measurement taken in the area above a tuberosity of a distal phalanx of a fourth finger on the dorso-ulnar surface (point No.4) provides to observe a status of glucocorticoids and sex hormones secretion function. The measurement taken in the area above a base of the distal phalanx of the fourth finger on the dorso-ulnar surface (point No.5) presents a status of the sympathoadrenal system. A state of cervical ganglions is indicated by the measured data in the area on a dorso-ulnar surface of the middle phalanx of a forth finger in a junction of the head and body (point No.6). A state of a thyroid and a parathyroid is produced by the measured data in the area on a dorso-ulnar surface of a forth metacarpal bone in a junction of the head and body (point No.7). A state of a hypothalamus, a hypophysis and an epiphysis is shown by the measurement taken in the area on a dorso-ulnar surface of the forth metacarpal bone in a junction of the head and body (point No.8). The derived measurement data are used to make the first scale. The values up to 45 kOhm in point No.1 are evaluated as 0 points. The values 111 to 152 kOhm and 27 to 45 kOhm in point No.1 are evaluated as 1 point. The values more than 152 kOhm and less than 27 kOhm in point No.1 are evaluated as 2 points. The values 111 to 56.6 kOhm in point No.2 are evaluated as 0 points. The values 111 to 152 kOhm and 36 to 56.5 kOhm in point No.2 are evaluated as 1 point. The values more than 152 kOhm and less than 36 kOhm in point No.2 are evaluated as 2 points. The values 95.6 to 56.5 kOhm in point No.3 are evaluated as 0 points. The values 95.6 to 129 kOhm and 36 to 56.5 kOhm in point No.3 are evaluated as 1 point. The values more than 129 kOhm and less than 36 kOhm in point No.3 are evaluated as 2 points. The values 111 to 45 kOhm in point No.4 are evaluated as 0 points. The values 111 to 152 kOhm and 27 to 45 kOhm in point No.4 are evaluated as 1 point. The values more than 152 kOhm and less than 27 kOhm in point No.4 are evaluated as 2 points. The values 111 to 36 kOhm in point No.5 are evaluated as 0 points. The values 111 to 152 kOhm and 19.5 to 36 kOhm in point No.5 are evaluated as 1 point. The values more than 152 kOhm and less than 19.5 kOhm in point No.5 are evaluated as 2 points. The values 111 to 45 kOhm in point No.6 are evaluated as 0 points. The values 111 to 152 kOhm and 27 to 45 kOhm in point No.6 are evaluated as 1 point. The values more than 152 kOhm and less than 27 kOhm in point No.6 are evaluated as 2 points. The values 111 to 36 kOhm in point No.7 are evaluated as 0 points. The values 111 to 152 kOhm and 27 to 36 kOhm in point No.7 are evaluated as 1 point. The values more than 152 kOhm and less than 27 kOhm in point No.7 are evaluated as 2 points. The values 111 to 56.6 kOhm in point No.8 are evaluated as 0 points. The values 111 to 152 kOhm and 36 to 56.5 kOhm in point No.8 are evaluated as 1 point. The values more than 152 kOhm and less than 36 kOhm in point No.8 are evaluated as 2 points. The second scale is made by summing up the derives points. If the point total is either zero to five for one hand, or 0 to 10 for the right and left hands, a normal adaptability is diagnosed. The point total being either 6 to 12 for one hand, or 12 to 24 for the right and left hands, a lowered adaptability is diagnosed. The point total being either 13 to 16 for one hand, or 25 to 32 for the right and left hands, a fallen adaptability is diagnosed.

EFFECT: method is easy-to-implement, does not cause complications and allows to schedule an extent and a stage-by-stage approach to therapeutic actions taking into account an adaptability status of a specific patient.

5 tbl, 1 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to mandibular abnormal position treatment apparatus. The apparatus comprises a mandible position detector 12, a beep electronic module 13, and quick-release fasteners for the detector 12 and electronic module 13 to the patient's head. The detector is a Hall-effect sensor with an appropriate magnetic marker 1. The magnetic marker 1 is made of the material neodymium-iron-boron, disk-shaped 8-12 mm in diametre and 1.5-2.5 mm in thickness and attached to the patient's chin. The detector 12 and electronic module 13 are integrated in a common body 2 which is turnable on a repositionable core frame enclosing the chin. The electronic module comprises a PC interface 19 and a microprocessor 15 with storage units 15A and a calibration unit 15B.

EFFECT: invention shall enable higher accuracy of mandible position measurement and on-line control of therapeutic process dynamics.

2 cl, 1 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, and particularly to metering systems for mouth cavity. System comprises registering device, comprising photodetector and light source, interface joined to registering device and comprising light-conducting prism, in which there is a surface of registration and surface of image generation. In process of use surface of registration is brought closely to or in contact with surface of chewing, front surface or one of side surfaces of metered row of teeth or into mouth cavity, and surface of image generation is joined to registering device. At the same time registering device is arranged with the possibility of disconnection from interface, prism represents Bauernfind prism, and source of light emits white light. Source of light is located opposite to one of prism sides and is arranged so that it may illuminate metered row of teeth or mouth cavity continuously or for a short period of time.

EFFECT: device application makes it possible to increase viewing angle to obtain image of the whole surface of row of teeth or whole mouth cavity in a single operation.

9 cl, 5 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to dentistry and can be used in dentoalveolar pathology treatment. A control device for dentoalveolar pathology treatment results comprises a common platform. On the common platform, there are rigidly fixed opposed cefalostate with a frontal support, vertical graduated guides for a chin support with clamps and a precision camera on a guide perpendicular to a plane of the cefalostate. The camera is removable in the horizontal plane forward-backward and turnable at an angle and about a vertical axis. The device is supplied with vertical frames. The vertical frames, vertical guides and camera guide are graduated.

EFFECT: objectified assessment of treatment quality, enabled control of treatment results in dynamics with taking into account specific features of the initial state of solid tooth tissues, parodentium tissues and dentoalveolar anomalies.

2 tbl, 1 ex, 3 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medical measuring equipment and can be used for determining linear dimensions and area of different anatomical formations of jaw-facial region, angles in degrees of ratio between them both outside and in oral cavity in normal and pathologic states. During examination of patients during polyclinic reception by doctors of various specialisation. For determination of dimensions of small neoplasms and wounds both outside and in oral cavity, description of dental images. Device for determination of anatomical formations in dentistry and X-ray image description represents transparent film with marking applied on it. Marking is applied by laser ray and has form of circle with 3 cm diametre, which is divided into sectors from 0 to 315 degrees. Quarter of circle has millimetre net.

EFFECT: ensuring simplicity of device manufacturing, low cost, increase of examination accuracy and safety, availability for manufacturing and replication.

5 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to dentistry and can be used for root apex positioning. A positioner is provided with a fastener. The fastener has a holder on a tooth to be treated or an adjacent one. Simultaneously, the fastener comprises a signal transmitter between the root apex positioner and an endodontic instrument, and signal transmitters between said device and a patient.

EFFECT: declared apparatus allows eliminating wire connection problems and ensures the complete license when positioning the root apex.

22 cl, 5 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

FIELD: medicine.

SUBSTANCE: device has supporting upright having supporting member bearing a member for fixing ear. The supporting member has T-shaped upper and lower parts arranged in parallel to each other and allowing rotation by 90°. The members for fixing ear, the members for fixing nose and occiput are mounted on the lower supporting member part movable up and down and back and forth. Millimetric rulers arranged as letter U are mounted on the upper supporting member part.

EFFECT: high fixation reliability.

2 dwg

FIELD: medical engineering.

SUBSTANCE: device has two probes and U-shaped plate and U-shaped plate. The U-shaped plate has lateral holes for fixing mould mass. The handle is arranged uniaxially with guide member having blind end, at the place the plate is curved. The probes have springs and restrictors. Probe positioned close to U-shaped plate curvature has length equal to 26 mm, the other probe is 34 mm long.

EFFECT: high accuracy of measurements; accelerated examination process.

2 dwg

FIELD: method and device can be used for determining optical characteristics of multilayer objects (layers of enamel and dentine) containing internal matter which is partially transparent and dissipates light diffusely.

SUBSTANCE: radiation is applied to surface of tested object and subsequently registered at output of receiving light guide. Area of partial darkening is formed onto surface of object at the receiving light guide's exit window. Area of darkening provides distribution of dissipated radiation power density, which changes within space. Dissipated radiation enters input window of light guide and is registered. Optical characteristics of multilayer object are judged from the dissipated radiation. Device for realization of the method has illuminating unit provided with exit window, radiation registration unit, at least two photosensitive elements, signal control and processing unit, and receiving light guide. Illuminating unit's exit window and receiving light guide are mounted coaxial to each other. Photosensitive elements of radiation registration unit are optically matched with exit window of receiving light guide and are disposed coaxial to each other for registration of volumetric distribution of radiation power dissipated by tested object.

EFFECT: improved precision.

7 cl, 5 dwg

FIELD: stomatology.

SUBSTANCE: method can be used for objective estimation of color of solid tissues of teeth, filling material and fillings. Method of estimation includes application of light along lightguide onto part of tooth and guiding of reflected light along lightguide to introduce reflected light into spectrum analyzer. Reflection spectrum is subject to colorimetric treatment to determine coloration. The coloration is compared with pre-known coloration of samples. Color is judged to be identical in case both colorations coincide. Light is applied to non-damaged part of tooth and reflected light is collected by means of photometric sphere. Coordinates of coloration are determined from reflection spectrum. The coordinates are compared with known ones of samples of filling material. If difference in color doesn't exceed 2-3 thresholds then filling material is chosen. If color difference is bigger then two filling materials are chosen and imposed one on the other and the third material is added to reduce color difference till specified threshold. Control determination of coordinates of coloration of filling is carried out and in case the coordinates coincide with coordinates of coloration of non-damaged part of tooth doesn't exceed 2-3 thresholds, the estimation is judged to be identical one.

EFFECT: improved precision; higher truth of estimation of color.

2 cl, 4 dwg, 1 ex, 1 tbl

Dental explorer // 2268683

FIELD: medical engineering.

SUBSTANCE: dental explorer comprises rod, which is provided with the handle at one of its ends and operating tip at the other end and has additional tip. The additional tip is mounted on the rod parallel to the axis of the operating tip for permitting detachment so that to provide the distance between the tips to be no less than the thickness of the wall of periodontal pocket. The free ends of the tips are leveled.

EFFECT: enhanced precision and enhanced efficiency of treatment.

9 cl, 3 dwg

FIELD: medicine; dentistry.

SUBSTANCE: device for electric diagnostics of condition of hard tissues of tooth has measurement unit, active and passive electrodes. Active electrode has holder made of isolation material. There is tip at the end of electrode. The tip is made of current-conducting material. There is contact element on the tip; the contact element is made in form capillary tube. Elastic tube is fastened to holder. One end of the tube is open and the other one is closed. Closed end of the tube is connected with non-working end of capillary tube. Passive electrode is made in form of contact area. Tip has vertical hole and horizontal hole disposed in perpendicular to the tip; the horizontal hole is provided with thread. Removable capillary tube in mounted inside vertical hole; the capillary tube is capable of moving along the hole. Non-working end of capillary tube is connected with elastic tube by connecting coupling. Rest screw is mounted inside threaded hole. Closed end of elastic tube is made in form of elastic bottle placed inside rigid cylindrical case provided with lateral slot along its middle part. Elastic clamp is put onto case. Protecting case is disposed between bottle and case at its top part. Removable dozer in form of plate being congruent to case is mounted onto case. There is vertical protrusion at one end of dozer. The protrusion goes into slot of case for interaction with protecting case. The other end of plate of dozer is inserted into elastic casing. Silver contact area of passive electrode is disposed onto elastic substrate. Removable dozer has vertical protrusion which height can differ.

EFFECT: improved precision of measurement.

1 dwg

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 applying variable force to a tooth. Harmonic mechanical oscillations of frequency not exceeding 250 Hz are excited. Mechanical impedance Z is concurrently measured. Lower limit of changes shows extreme tooth looseness degree. The upper limit of changes shows physiologic tooth looseness degree. Mechanical impedance Z value is measured as Nxs/m, where N is the newton, s is the second and m is the meter.

EFFECT: high accuracy and objectiveness of measurements.

1 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves recording wave radiation by means of device for recording wave radiation, building panoramic image in computer memory and on display screen. Infrared imager is used as the device for recording thermal radiation. Two thermovision panorama images are recorded for each jaw. The first thermovision panorama image is built by moving the infrared imager along circular arc in horizontal plane and the second one in a plane arranged at an angle to the horizon. The mandibular thermovision panorama images are built in horizontal and vertical planes and those of the maxilla in the horizontal plane and in a plane arranged at an angle to the horizon. Spatial image is built on display screen using the mandibular and maxillary thermovision panorama images produced in two projections. The device has wave energy receiver being infrared imager capable of moving in vertical, circular direction and changing movement plane inclination angle. The infrared imager is mounted on guide member shaped as circular arc. The guide member changes infrared imager montage plane inclination angle relative to horizontal position.

EFFECT: wide range of functional applications.

6 cl, 2 dwg

Up!