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1.7. The functional methods of research applied at proyotezirovanii of defects of firm tissues of teeth

Modern principles of occlusal aftertreatment stomatologicheyoskih patients are based on that position, that morphology of occlusal surfaces, functioning of masseters and visochnoyonizhnecheljustnyh joints vzaimoobuslovleny [36,64,101,129,194].

Thus, character of occlusal parities immediately influences quality of treatment of stomatologic patients. For effective reabiliyotatsii stomatologic patients it is necessary to have authentic diagnoyosticheskuju the information on anatomic and functional reference points which is reproduced in the course of restoration of defects firm tkayonej a teeth under condition of application of articulators and systems funktsionalyonoj diagnostics [76,128,145]. The Great value occupies the analysis graficheyoskoj records of movements of a mandible.

Graphic registration of movements of a mandible allows: nayostroit an articulator to tap disturbance of symmetry of movements susyotavnyh heads, to define restriction of movements of a mandible, nayopravljaemyh an is temporal-mandibular joint and chewing myshtsayomi, to establish presence of premature occlusal contacts.

Methods of registration of movements of a mandible are sectioned on mechanical (out of - and intrastomatic) and electron. Mechanical vnero - tovye records by a slate pencil (peg) on a paper (or a platform) osushchestvljayojutsja by means of pantographs, aksiografov and other adaptations, priyochem the platform for record becomes stronger on a facial arch or head shayopochke, and the peg or a slate pencil is bridged to a mandible. Gysi A ispolyozoval this technique for definition of articulate angles. McCollum B., Stuart S have written down boundary movements of a mandible and have transferred them in inyodividualno the adjusted articulator. Intrastomatic records primenjajutyo
sja numerous authors for definition of the central parity of jaws and the analysis of movements of a mandible at intact tooth rjayodah and at loss of a teeth. Thus the peg for record is fixed either on top, or on a mandible, and a platform on opposite cheljuyosti [161,164,165,166]. The Starting point of record of movements cheljuyosti the central parity that is proved by many avtorayomi [180,181,225,235] should be bottom. The central parity of jaws and boundary movements of a mandible from this position can be written down precisely and repeatedly to reproduce both in an oral cavity, and in an articulator.

Electronic devices are framed for the purpose of simplification of the analysis rezulyotatov researches of movements of a mandible and for programming aryotikuljatorov on individual function. At the heart of modern elekyotronnyh registration systems different principles of measurement lay: elektroyomehanichesky, optoelektronnyj, ultrasonic and magnetic. eksperiyomentalnymi and clinical researches have been confirmed vysoyokaja accuracy and convenience of electron systems. One of most primeyonjaemyh systems is the electron system for registration of movements of mandible ARCUSdigma of firm KaVo. At comparison of traditional system of non-contact registration JMA-System (Jaw Motion Analyser) and new portable ARCUSdigma it is established, that for correct praktiyocheskoj realisations of the received data from registering systems neobhoyodimo to consider features of construction of their software and uniformity of use of control reference points. Besides, foryoma a written down Gothic angle allows to estimate symmetry and synchronism of movements in a joint [164,165]. A disadvantage of all these systems association of mechanical registration of a hinged axis with computer processing of the received results, projective errors at interpreyotatsii results of researches. The comparative estimation graphic and electron has shown registration of movements of a mandible neznachiyo
telnye differences.

The electromyography (EMG) masseters allows to define changes of a functional condition of muscles in a phase chewing dvizheyonija. The given method gives the chance to estimate objectively degree vyrayozhennosti pathological process at anomalies of an occlusion, proteziroyovanii teeth, at painful syndromes of maxillofacial area and interfacing areas. The data received during research, are obektivnyyomi criteria of correctness of the spent prosthetics, ortodonticheyoskoj corrections and allow to tap nejromyshechnyj balance at izgotovyolenii poor-quality restorations. Distinguish 3 principal views elektroyomiografii: interferentsionnyj (superficial); local at which research spend with application of needle electrodes; stimuljatsiyoonnyj at which spend measurement of rate of diffusion elekyotricheskogo impulse from its place nanesenenija to other site stimuliyoruemogo a nerve or innerviruemoj it muscles. For research dejatelyonosti and the general condition of masseters usually spend poverhnoyostnuju an electromyography. A functional condition of masseters investigate in a condition of physiological rest, smykanija teeth in peredyonej, lateral and central occlusions, at swallowing and during chewing. The analysis of the received electromyograms consists in measurement of amplitude of biological potentials, frequencies of fluctuations in a second, studying of the form of a curve, a parity of an active rhythm to a dormant period. The amplitude size koleyobany biological potentials allows to judge force of reduction of muscles.

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Scientific source BESHTOKOVA FATIMA HAMIDBIEVNA. the COMPARATIVE ESTIMATION of EFFICIENCY of RESTORATION of the BLASTED OCCLUSAL SURFACE of the LATERAL TEETH. The dissertation on competition of a scientific degree of the candidate of medical sciences. Stavropol - 2010. 2010

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