[Correlation between dental pulp demyelination degree and pain visual analogue scale scores data under acute and chronic pulpitis].

The aim of study is the analysis of pulp nerve fibers demyelination degree and its relationship with Visual Analogue Scale (VAS) score that may be measured as objective criteria. Material and methods of study. Step I: electron micrografs of dental pulp simples with special interest of myelin structural changes detected in 3 scores system, obtained from 80 patients, displays in 4 groups: 1) acute and 2) chronic pulpitis without and with accompined systemic deseases, 20 patients in each group. Dental care was realized in Kutaisi N1 Dental clinic. Step II - self-reported VAS used for describing dental pain. All data were performed by SPSS 10,0 version statistics including Spearmen-rank and Mann-Whitny coefficients for examine the validity between pulp demyelination degree and pain intensity in verbal, numbered and box scales. Researched Data were shown that damaged myelin as focal decomposition of membranes and Schwann cells hyperthrophia correspond with acute dental pain intensity as Spearman index reported in VAS numbered Scales, myelin and axoplasm degeneration as part of chronic gangrenous pulpitis disorders are in direct correlation with VAS in verbal, numbered and behavioral Rating Scales. In fact, all morphological and subjective data, including psychomotoric assessment of dental painin pulpitis may be used in dental practice for evaluation of pain syndrome considered personal story.

[Theoretical and practical principles of dentinogenesis: hypotheses and confirmed clinically reality].

The problem of maintaining dental vitality and stimulating reparative processes is a priority in modern odontology. Restorative processes depend not only on the type and size of tissue damage, but also on the protection capacity and integrity of the structural/functional pulp-dentin boundary. Primary dentin that is initiated in the intrauterine period has unique structure and composition. Secondary dentin continues to form after the tooth is erupted, then after root formation is finished, and throughout life. Actually the primary and secondary dentins have similar tissue structures developed at different stages of dentinogenesis. Primary dentinogenesis is initiated by odontoblasts located in the periphery of dental pulp. Secondary dentin as a structure already exists once root formation is complete, but at that stage is has low levels of mineralization. Formation of tertiary dentin is always reactionary to different pathologies and is initiated by so called "transitional odontoblasts" (odontoblast-like cells) and partially fibroblasts. Odontotropic and anti-inflammatory medications strongly change structural characteristics of the dentin. Pulpal ability to produce dentin-like matrix (tertiary dentin) is an important component of the pulp-dentin reparative capacity. Only specific characteristics of the dentin can account for indications and contraindications for using restorative liners and explain the impact of adhesive systems on these. In this context, the interest is high to the dentin and its response and change in reaction to different stimuli. Dental caries and other pathological processes (abrasion, erosion, attrition) seriously affect dentin vital activity causing it to change to the "emergency" mode. This process is viewed not as resulting from pulp medication but as reactionary, aimed for self-preservation. In such cases the major focus is not on drug composition but on pulpal response. The pulp may be said to "form tertiary dentin for self-protection". In conclusion, the tertiary dentin that forms as a result of pathological processes (express-dentin, reparatory dentin) could be identified as a perfect barrier for the pulp necessary for keeping it vital. And investigation of mechanisms causing primary stimulation of odontoblasts and triggering the reparative processes remains a pressing problem in modern odontology.

[Composite resin--clinical problems and success].

Biomimetic aspects of restoration of the frontal and side teeth, on one hand, facilitated achievement of the desired esthetic effect and on the other--complicated the way of achievement of the final result. Consequently, the new products of the leading manufacturers are realized in the dental clinics with the interest and impatient, though vigilantly. Goal of this research was comparative description of the effects of filling composites Profil, Charisma and Estelite. Restoration works, using the composite materials were conducted both, in clinics and experimentally, on the extracted teeth. Research results showed: micro-hybrid components of Profil and Charisma had almost identical clinical parameters (compactness, range of colors and plasticity, in modeling). Though, colors seemed to be more saturated in case of application of Profil. Micro-matrix composite Estelite, according to our results, is characterized with more prominent transparency, requiring application of the large layers of opaque shades. Though, high saturation of Estelite (82% of inorganic fraction) is conditioned by the sensity of composite, justifying its application for both, restoration of teeth and correction of the contact occlusion points. Thus, in restoration of teeth, which are subject to high load at a time of chewing (premolars, molars), Estelite is preferable. It would be better to use Profil in filling of the cavities of small size and Charisma might be recommended for the frontal teeth groups, though, in esthetic restoration, composites without filling should be preferred.

[Clinical properties of mineral trioxide aggregate].

Goal of the research was determination of effectiveness of clinical application of MTA. The study covered 79 molars of 79 patients (46 lower and 33 upper molars). The perforated areas were closed with MTA. Perforations were localized in various sections of crowns of teeth (over-junction--12, under-junction--23, in furcating area--44). The conclusion is that successful application of MTA requires attentive and careful approach, similar to any innovative technology in practical dentistry. In the article authors considered treatment of two-root incisors. Endo-treatment of perforation in the furcating area was conducted. In the other cases treatment was conducted on 16 teeth, in which the perforated areas were localized at the aperture of medial root. The third case shows closing of the resorbed apical hole in 46 teeth. In all clinical cases MTA was applied. The results of this study suggest that MTA would widen the capacities of dentists in their everyday work--in the process of treatment of teeth with various perforations.