METHOD EVALUATION OF EFFICIENCY OF ADHESIVE SYSTEM EFFECT ON HAND TISSUES OF TOOTH WHEN FILLING OF CARIOUS CAVITIES Russian patent published in 1999 - IPC

FIELD: medicine, namely stomatology. SUBSTANCE: method includes determination of damage intensity index (carries-filling-extraction) and level of resistance of tooth enamel to carries. In this case, carious cavities are prepared in vitro, and microsections are manufactured from which experimental and control specimens are selected. Adhesive system is applied on experimental specimens layer-by-layer, experimental and control specimens are exposed to X-ray irradiation, polycrystalline weighed portions of 20-30 mg are made, and their spectroscopic examination is carried out by means of electron paramagnetic resonance. Signal-responses (of electron paramagnetic resonance are recorded in every specimen in form of absorption line derivative, spectrum form of electron paramagnetic resonance is analyzed, intensity of absorption lines in range of g-factor 1.997+2.001 is determined by which structural variations in hydroxyapatite mineral of enamel and dentin are revealed. Degree of effect of this or that adhesive system on hard tissues of tooth is evaluated by does dependences of signal intensity of electron paramagnetic resonance in experimental and control specimens. EFFECT: enhanced quality and durability of filling. 7 dwg