Abstract and keywords
Abstract (English):
Photocompositional materials and glass ionomer cements are widely used to restore approximal carious cavities in the "sandwich technique", which makes it possible to compensate for the negative properties of both photocomposites and glass ionomers. The purpose of this study was a comparative clinical assessment of the restoration of chewing teeth made by the sandwich method in patients with different levels of oral hygiene. In the course of the study, 49 teeth with cavities of class II according to Black were restored to 33 patients for medium caries by the open "sandwich" method. All examined patients were divided into two groups depending on the hygiene index OHI-S. Group I included 18 patients with 26 restorations whose hygiene index for OHI-S did not exceed 1; group II included 15 patients with 23 restorations whose OHI–S index was greater than 1, but who had previously undergone comprehensive professional oral hygiene. Control studies were carried out immediately after recovery, after 6 and 12 months according to the criteria "marginal adaptation", "marginal painting", "contact point" and "secondary caries" in accordance with the Ryge scale. As a result of the study, it was found that in patients with the initial unsatisfactory hygienic status of the oral cavity, even in the case of preliminary professional hygiene, the quality of restoration work performed by the "sandwich" method is significantly worse than in patients with the initial satisfactory hygienic status, and according to the criterion of "marginal adaptation" the differences are significant; the restoration of the contact point from glass ionomer cement showed its inefficiency in comparison with the photocomposite material, regardless of the hygienic status; despite the caries prophylactic effect of glass ionomer cement, secondary caries was detected in patients with the initial unsatisfactory hygienic status of the oral cavity within 12 months.

photocomposites, glass ionomers, sandwich technique, chewing teeth, quality of restorations

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