Analysis of the factors that initiate polymerization stress: a systematic review

Aim. To consider the problem of polymerization stress. Polymerization stress Is one of the main causes of loss of marginal Ш and subsequent postoperative manifestations, such as hypersensitivity, marginal staining, secondary carles, deformation of underlying tooth tissues.Materials and methods. A systematic review of the literature In the electronic databases Google Scholar and Pubmed was conducted. Articles related to the problem of polymerization stresses formation In dental composite materials, as well as factors that directly affect this process, are considered and Included.Resuits. 68 articles were analyzed during the review. After making the selection based on the exclusion criteria, the numberofincluded studies was 31.Conciusion. According to the studied publications, the development of shrinkage stresses Is In^uenced by four main groups of factors, the manifestations of which can be minimized as a result of modifying the structure of the composite material and methods of working with It

The use of the Carriere Motion 3D in orthodontist practice. A systematic review

Aim. To determine the effectiveness of the Carriere Motion 3D orthodontic device in the treatment of malocclusions II and III classes. The action of the device is based on distalization of the lateral segment of the dentition from the canine to the tirst molar as a whole with the preservation of isolated micro-movement of the key teeth.Materials and methods. During a systematic review of the literature, the analysis of publications in the electronic databases Google Scholar and PubMed was carried out. Included publications the main part of which included a description of working methods with Carriere Motion 3D, dinicai cases using the presented distalizer, and consideration of the target and undesirable effects of the device.Results. 43 articles were viewed during the review. After analyzing the literature for inclusion criteria, the total numberofpublications has become 33.Conclusions. Carriere Motion 3D is quite effective for correcting incorrect molar relationships in the presence of malocclusion of the second and third class, but it cannot be called the only correct way to resolve malocclusions

The relevance applying in the adhesive protocol in devital teeth

Aim. To determine the relevance of the application of the chlorhexidine adhesive Protocol in devital teeth.Materials and methods. A systematic review of the literature in the electronic databases Google Scholar and Pubmed was conducted. Articles related to research on the activity of matrix metalloproteinases in vital and devital teeth, as well as research on the effectiveness of the chlorhexidine Protocol, are considered and included.Results. 60 articles were reviewed during the review. After making the selection based on the exclusion criteria, the number of included studies was 36.Conclusions. According to the studied publications, it was found that MMP 2 and MMP 9 are contained not only in vital, but also in devital teeth. The use of a chlorhexidine adhesive Protocol is relevant in both clinical cases but depending on the type of MMP and the state of the pulp, the concentration of chlorhexidine is selected

Analysis of bactericidal effects of sodium hypochlorite and chlorhexidine on resistantbiofilm microorganisms (E. Faecalis, C. Albicans).

Aim. To analyze current data on the bactericidal efficacy of endodontic irrigants, in particular, sodium hypochlorite and chlorhexidine in different concentrations relative to the elimination of resistant microorganisms (E. Faecalis, C. Albicans). Irrigation is an important stage in the treatment of root canals, it prevents the further contamination of the canals with microorganisms. However, irrigants do not always cope with this function, which leads to the occurrence of a secondary infection.Materials and methods. The study of publications was produced in the electronic databases such as Google Scholar, PubMed and ScienceDirect in the course of a systematic review of the literature. Included articles contain information about various types of irrigants and their antimicrobial effect.Results. 73 articles were viewed during the review. After analyzing the literature for inclusion criteria, the total number of publications has become 41.Conclusions. According to literature data, irrigation solutions in widely used by clinicians concentrations (sodium hypochlorite 3%, chlorhexidine 2%) are not able to completely eliminate E. faecalis and C. albicans from the root canal system