AN ELECTROMETRIC ESTIMATION OF MARGINAL ADJOINING OF COMPOSITE FILLING MATERIALS DEPENDING FROM THE WAY OF ISOLATION OF THE WORKING FIELD
AN ELECTROMETRIC ESTIMATION OF MARGINAL ADJOINING OF COMPOSITE FILLING MATERIALS DEPENDING FROM THE WAY OF ISOLATION OF THE WORKING FIELD
*Ashurov G.G., **Sadikov F.O.
AN ELECTROMETRIC ESTIMATION OF MARGINAL ADJOINING OF COMPOSITE FILLING MATERIALS DEPENDING FROM THE WAY OF ISOLATION OF THE WORKING FIELD
*Department of Therapeutic Dentistry of the State Educational Establishment "Institute of Postgraduate Education in Health Sphere of the Republic of Tajikistan"
**Society with limited liability "Eurodent"
Aim. Estimation of the condition of marginal stability of composite filling materials depending from the way of isolation of the working field and combined influences of the way of curing of the filling material, vitality of pulp, level caries of the teeth.
Materials and methods. Work is based on analysis of results of the survey of 152 patients, among which 92 woman, 60 man. During the operative-reconstruction therapy of the carious teeth 26,3% formed molars, premolars — 22,7%, incisor and canines — 51,0%. In 40% of cases filling of the teeth produced with relative isolation of the working field by cotton roller (first group), in 60% with absolute when use rabberdam (second group). About uncomplicated caries were filled 66,7% of teeth, complicated caries 33,3%. Patients with low clinical level of resistance to caries were treated in 40% cases, with average level of resistance in 60%. Marginal adjoining of fillings was assessed by the scale of R. G. Buyankina, where the index of the amperage less than 2 mkA matched a normal residual marginal penetration of high-quality fillings, 2,1-5,2 mkA — infringement of marginal adjoining without the development of secondary caries.
Results. While isolating teeth with chemically hardening materials cotton roller the current at the end was 1,31±0,04 mkA and was lower by 1.2 times than in the isolation of the working field by rubberdam. A year later, opposite, the electrical conductivity at absolute isolation was 1,85±0,09 mkA, which was much lower by 14.4% than at a relative using cotton roller. Marginal adjoining of light-cured composites with rubberdam isolation was better immediately after the restoration, also the immediate and long-term periods of research, compared to chemical hardening materials.
Conclusion. In teeth with uncomplicated caries amperage were realistically below at the average on 12,2%, than when recovering of depulpited teeth. After 1,5 year in the second group patient with absolute insulation of vitally teeth average importance of conduction formed 1,55±0,08 мкА and was less in 1.5 times, than when work with cotton's wool platen.
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