SU1281252A1 - Method of diagnosis of the state of tooth and jaw system - Google Patents

Abstract

The invention relates to medicine, namely to dentistry, and can be used to assess the functional state of the dental system. The purpose of the invention is the differential diagnosis of the condition of the dental system. For this purpose, the maximum force at the time when the child closes the dental rows is determined with the help of the device (gnatynodimeter). The value of external resistance is 60-70% of the maximum value. The number and duration of occlusion of teeth are recorded. According to the obtained number of numbers, a histogram (curve of the probability density of the closure of dental rows) is plotted. The regulation coefficient (Creg) of the dentition is determined and, when the magnitude of CRT is 2.59-2.05, the initial stage of bite disorder is diagnosed, at Creg 2.04-1.50 - the developing stage of bite disturbance is diagnosed, and at CRSG 1.49 0.85 - developed stage of bite disorder. with SS (L

Description

Yu

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to joint venture to

The invention relates to medicine, namely to dentistry, and can be used to assess the functional state of the dental system.

The aim of the invention is the differential diagnosis of the condition of the dental system.

The proposed method is carried out as follows.

The device (gnatodinamometr) determines the magnitude of the maximum volitional force that the child performs to close the tooth rows. Then, the external resistance is set to 60-70% of the maximum value, and the child alternately closes and opens the tooth row, overcoming the resistance of the spring. The number and duration of occlusion of teeth are recorded. According to the obtained number of numbers, a histogram (curve of the probability density of the closure of dental rows) is plotted. To construct this curve, variational series of values for the closures of the dental series, which are depicted as a histogram, are compiled.

Take half of the maximum number of cases and on the ordinate axis find the point 0.5 Рmax. From it a horizontal line is drawn parallel to the abscissa axis. From its points of intersection with the distribution curve on the abscissa axis, two vertical lines are delineated, limiting the range of values of А7о5.

On the curve, Pmax is the maximum likelihood value, Tmol is a modal, the most common occurrence of the closure of the tooth rows (DPSD), DGob is the DPSZ range corresponding to 0.5 max. .

Then, using this curve, finds the criteria FUS, UE and UFV by the formulas:

FUS;

/ mod-dgo.b

vn / n

UVB / n- / l -.

A / 0.5 Go.5

The obtained values of the criteria FUS, UE and UFV are summarized.

The average value of the sum of the criteria FUS, UE and UFV is denoted by the term regulation coefficient (/ (per). When the regulation coefficient is / (per-2.59-2.05, the initial stage of bite disorder is diagnosed, with Kpfr 2.04- 1.50 establishes the developing stage of bite disorder, and with / (per 1.49-0.85 - the developed stage of bite disturbance.

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Example 1. Oleg P., 6 years. No complaints. Lips closed without tension, my profile.

Tooth formula 6 V IV III II 1

I II P1 IV V6

6VIVIII II 1 I II III IV V6 Teeth are located in the tooth row without displacement. Overlap of the upper incisors of the lower more than 1/3, the side teeth in a neutral ratio.

Conducting and results of the study in the proposed way.

The child is seated in a chair and the maximum load on the masticatory muscles, which is 8 kgf, is determined using a gnatodinamometer. The load is set at 4.8 kgf and the child arbitrarily closes and opens the tooth rows, overcoming the resistance of the gnatodinamometer spring, the tooth tips of which are located between the upper tooth rows. The duration of each closure (in seconds) is recorded with an instrument. A number of 100 numbers is obtained: 0.35, 0.43, 0.42, 0.41, 0.37, 0.38, 0.42, 0.50,

0.28, 0.37, 0.42, 0.39, 0.40,

0.40, 0.33, 0.34, 0.31, 0.39

0.34, 0.34, 0.39, 0.13, 0.36

0.43, 0.41, 0.32,

0.30, 0.33, 0.36,

0.35, 0.34, 0.35,

0.32, 0.35, 0.28,

0.37, 0.35, 0.33 0.37, 0.39, 0.36,

0.36,

0.24,

0.32,

0.36,

0.38,

0.35,

0.37, 0.39, 0.30, 0.08, 0.30, 0.31,

0.35, 0.32, 0.47, 0.41, 0.30,

0.28,

0.20,

0.32, 0.23, 0.32, 0.37, 0.34, 0.05, 0.29, 0.36 0.27, 0.33, 0.31, 0.27, 0.34 , 0.44, 0.37, 0.36.

0.28, 0.20, 0.53, 0.34, 0.40, 0.34,

0.35, 0.29,

0.35, 0.36, 0.36, 0.30, 0.30, 0.26, 0.31, 0.34,

0.33, 0.37, 0.41, 0.27, 0.30, 0.28, 0.32, 0.35,

Choose the number of cases in the intervals of 0.00-0.05-1-1; 0.06-0.11 - 1; 0.12-0.17 - 1; 0.18-0.23 - 3; 0.24-0.29 - 12; 0.30-0.35; 42; 0.36-0.41 - 31; 0.42-0.47 - 7- 0.48-0.53 - 2.

It is considered average in each interval, which is a point for plotting a graph. The following parameters are calculated according to the schedule: Riax 0.42, Gmo.h 0.33 AG5

 0.11, Go.5 0.35.

The criteria for CRF are 3.32; UE 1.33; UVB 2.40; / (horn 2.35.

Conclusion Physiological bite. Diagnose the initial stage of malocclusion. This child should be under observation by an orthodontist. It is recommended to use a complex of gymnastic exercises for the muscles of the maxillofacial area. Re-examination after 3 months.

Example 2. Dima S., 6 years. No complaints. The lips are closed without tension, the profile is approaching straight.

Tooth formula 6 V IV III II I

I II III IVV6

6VIVIII and 14 II III IV V6 The frontal portion of the mandibular arch is flattened. GP tiled

layered over each other, G2 rotated around the axis by 45-50 °. When closing the dental rows of the upper and lower jaws in the central occlusion, the posterior teeth are in a neutral ratio. Conducting and results of the research by the proposed method.

The child is seated in a chair and the maximum load on the masticatory muscles, which was 9 kgf, is determined using a gnatodinamometer. Establish a load of 6.3 kgf. The child arbitrarily closes and opens the dental rows, overcoming the resistance of the spring of a single dynamometer, the dental tips of which are located between the upper and lower dental rows.

The duration of each closure (in seconds) is recorded with the help of the instrument. A series of 100 numbers is obtained: 0.56, 0.44, 0.44; 0.53; 0.41, 0.46; 0.41; 0.40; 0.35, 0.29, 0.08, 0.29, 0.19, 0.15, 0.16, 0.33, 0.25, 0.27, 0.30, 0.25, 0, 25, 0.31, 0.31, 0.32, 0.27, 0.26, 0.28, 0.23, 0.20, 0.16, 0.31, 0.15, 025, 0, 14, 0.24, 0.16, 0.20, 0.30, 0.25, 0.14, 0.19, 0.22, 0.37, 0.50, 0.32, 0.29, 0.27, 0.31, 0.28, 0.12, 0.20, 0.25, 0.20, 0.25, 0.27, 0.20, 0.19, 0.23, 0, 14, 0.15, 0.18, 0.17, 0.25, 0.14, 0.14, 0.18, 0.19, 0.15, 0.19, 0.11, 0.21, 0.21, 0.12, 0.29, 0.20, 0.36, 0.10, 0.08, 0.35, 0.23,

0.05, 0, .30, 0.25,

0.14, 0.19, 0.21, 0.26, 0.24, 0.27.

0.21, 0.17,

0.15, 0.27,

0.19, 0.26,

Choose the number of cases in the intervals: 0.00-0.06 - 1; 0.07-0.13 - 6; 0.14-0.20 - 31; 0.21-0.27 - 32; 0.28-0.34 - 16; 0.35-0.41 - 7; 0.42-0.48-3; 0.49-0.55 - 2; 0.56-0.61 - 1.

 The average of each interval, which is a point for constructing a graph, according to which the parameters are calculated, is calculated: P,: ax 0.32, Gmod 0.24, AG 5

 0.19, 7-0.5 0.21.

The criteria for FUS 3, 10, pack 0.52, UVB 2.10, 1.91 are determined.

Conclusion Anomalies of the position of III, tortoman or f. The developing stage of bite disorder is diagnosed. This child needs orthodontic treatment: instrumental in combination with therapeutic exercises.

Example 3. Acne K., 6 years. Complaints about the wrong arrangement of teeth. The mouth is half open, the nasolabial folds are smoothed, the chin is pronounced. The lips are closed with tension and the upper lip protrudes. The symptom “thimble is positive.

Tooth formula V IV III II I

I II III 1VV

VIVIIIII1 I III11IVV Teeth are located in the dental row without displacement, the shape of the dental arches approaches a semicircle. In the central occlusion between the frontal teeth of the upper and lower jaws, the sagittal incisor gap is up to 5 mm. VIV is located distal by 5

( five

20

25

thirty

35

40

45

50

55

to the VIV by more than one knob, forming a distal step.

Conducting and results of the research by the proposed method.

The child is seated in a chair, and the maximum load on the masticatory muscles, which is 6 kgf, is determined using a gnatodinamometer. Establish a load of 3.6 kgf. The child arbitrarily closes and opens the dental rows, overcoming the resistance of the spring of a single dynamometer, the dental tips of which are located between the upper and lower dental rows.

The duration of each closure (in seconds) is recorded with an instrument. Get a row of 100 numbers. 0.50, 0.17, 0.32, 0.37, 0.57, 0.41, 0.34, 0.38, 0.34, 0.45, 0.62, 0.57, 0, 41, 0.33, 0.37, 0.31, 0.30, 0.27, 0.19, 0.40, 0.05, 0.57, 0.42, 0.41, 0.30, 0.40, 0.16, 0.46, 0.40, 0.41, 0.41, 0.43, 0.54, 0.41, 0.52, 0.42, 0.16, 0, 51, 0.06, 0.22, 0.60, 0.05, 0.86, 0.39, 0.40, 0.10, 0.51, 0.50, 0.36, 0.08, 0.44, 0.46, 0.55, 0.46, 0.61, 0.38, 0.54, 0.34, 0.40, 0.40, 0.40, 0.36, 0, 31, 0.29, 0.35, 0.40, 0.60, 0.39, 0.30, 0.42, 0.40, 0.36, 0.31, 0.43, 0.49, 0.44, 0.36, 0.39, 0.29, 0.39, 0.43, 0.38, 0.08, 0.44, 0.36, 0.47, 0.48, 0, 47, 0.44, 0.22, 0.06, 0.40, 0.07, 0.20, 0.39, 0.32, 0.42, 0.38, 0.06, 0.37.

Choose the number of cases in the intervals: 0.00-0.09 - 9; 0.10-0.19 - 5; 0.20-0.29 - 6; 0.30-0.39 - 30: 0.40-0.49 - 35; 0.50-0.59 - 1 1; 0.80-0.89 - 1.

Find the average of each interval, which serves as a point for plotting. The following parameters are calculated according to the schedule: Pvasc 0.35, G <0.45, D7 from 0.24, Go.5 0.41.

The criteria for FUS 2.23, UE 0.37, UVB J, 27, / (per 1.29.

Conclusion: prognathic bite. The developed stage of bite disorder is diagnosed. Orthodontic treatment is necessary for this child, and medical gymnastics for the muscles of the maxillofacial area should precede the instrumental one.

Thus, the proposed method allows a differential diagnosis of the state of the dental-maxillary system, which makes it possible to quantify the functional state. At the same time, it is possible to detect dysfunction not only in children with formed bite anomalies, but also in the conditions preceding their occurrence.

Diagnosis of the dental-maxillary system in children makes it possible, in the course of preventive examinations, to distinguish groups of children with different functional status of the masticatory apparatus for further examination and treatment and prophylaxis.

The proposed method has high methodological reliability, which ensures its high reliability of results when applied.

Claims (1)

Invention Formula A method for diagnosing the condition of the dento-vascular system by determining the index of the duration of occlusion in dynamic muscular load, characterized in that, in order to differentiate social diagnostics of the dental system, preset the value of the maximum muscular load, record the duration of occlusion of the dental rows with a muscular load equal to 60-70% of the maximum value, determine the coefficient of regulation of the dentofacial system at 2.59 - 2.05, the initial stage of bite disorder is diagnosed, at 2.04-1.50 - the developing stage of bite disorder is developed, and at 1.49-0.85 - the developed stage of bite disturbance.