No 6 (2005)

The effects of application of Opalescence Xtra Boost (Ultradent, USA), a dental bleaching gel, followed by application of BV, a remineralizing agent, on the dental enamel, was studied in a dog experiment; BV was applied immediately after the bleaching, as well as on the 15th and the 30th day. The bleaching resulted in certain changes of the enamel surface: the absence of pellicula and uncovering of enamel prisms. The use of В V led to formation of crystal substance on the dental enamel surface. The bleaching-induced changes in the pulp were reversible and consisted in focal hyperemia and appearance of a moderate number of inflammatory infdtration cells. The results of the study substantiate clinical application of BV, a remineralizing preparation, after dental bleaching.

Filling of the dentinal tubules (DT) of dog teeth with ultra dispersible fluorohydroxyapatite (udFHAP) was studied in dog experiments. The preparation was introduced under the temporary crowns of vital and depulpated teeth for 3 to 12 weeks. The hard tissues of the teeth were studied using scanning microscopy. The layer of the crystal substance, covering dentin, was practically equal during temporary crown use. High-quality obturation and deeper penetration of udFHAP into DT was observed in vital teeth; it displayed a positive correlation with the term of the experiment. The study demonstrated that udFHAP increased dental hard tissue resistance after odontopreparation in cases of both vital and depulpated teeth.

The authors of the article analyzed inflammatory complications in 109 patients with mechanical trauma of the lower face, undergoing treatment in the Department of Maxillofacial Surgery. The study shows that the character and severity of posttraumatic inflammatory complications in lower jaw fractures correlate with the mechanisms of the trauma

The article presents clinico-laboratory data concerning application of a preparation for enamel microabrasion for the improvement of dental color in patients with dental fluorosis. The author demonstrates the effectiveness of microabrasion, as well as its influence on enamel structure, dental sensitivity, and the soft tissues of oral cavity. The study evidences the necessity of application of prophylactic preparations in order to prevent complications following dental microabrasion.

The growth of the incidence of allergic intolerance to prosthetic materials within the last decades makes the problem of its diagnostics and choice of inert prosthetic materials very important. Allergic intolerance to these materials is delayed-type hypersensitivity. There are specific allergic reactions, as well as pseudoallergic ones. The latter are more frequent. The optimal approach to detection of allergic intolerance to prosthetic materials is application of a complex of in vitro and in vivo methods. This complex includes peroxidase test, which allows detection of sensitization to the prosthetic material. This is followed by mucogingival reaction test, which allows differentiation between latent sensitization of the organism, and clinically manifest material intolerance. If the patient cannot afford this laboratory method, oral cavity provocation test may be performed instead