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Information × Registration Number 0219U001866, 0116U004060 , R & D reports Title Еtiopathogenesis of precervical lesions of dental hard tissues and the principles of their complex diagnostics, treatment and prophylaxis popup.stage_title Head Yarova Svitalana Pavlivna, Доктор медичних наук Registration Date 18-03-2019 Organization Donetsk national medical university popup.description2 Rationale of differentiated approach to operative therapy of precervical injuries of dental tissues depending on the depth of enamel micro cracks. Methods: micro hardness was determined in outer, median and inner layers of dentin of facial surface of samples, as also in area of coronal and gingival surfaces of wedge-shaped defect, occlusal and margin walls of precervical caries. Results: dentine strength of coronal surface of wedge-shaped dental defect with ІІ type of micro cracks was higher than the same at gingival surface as follows: 15,2±8,2%. Results of samples of the ІІІ type, on the contrary were 16,5±5,8% higher - at gingival compared to coronal surface. Micro hardness of occlusal and margin walls damaged by curiosity was higher in teeth with micro cracks of the ІІ type and lower with deep defects of enamel of the ІІІ type, but the difference was not significant, as well as in samples having wedge-shaped defects (р>0,05). Conclusion: preventive expansion of margin wall in teeth with precervical caries is proposed to perform at enamel availability at facial surface of defects, which is seen by the unaided eye at common light (type ІІІ), occlusal wall - during micro cracks determining at additional illumination using coloring agents (ІІ and І types, correspondingly). Maximum expansion for teeth with wedge-shaped defects should be made in area of coronal surface at availability of micro cracks of ІІІ type, in gingival surface - defects of І and ІІ types. The revealed features should be used for a substantiation of principles of treatment and prophylaxis of the dental hard tissues defects. Product Description popup.authors Заболотна Ірина Іванівна Кобцева Олена Анатолівна Нечаєва Ірина Іванівна Турчененко Сергій Олегович Яров Юрій Юрійович Ярова Світлана Павлівна popup.nrat_date 2020-04-02 Close