Aspects of Testing the Biological Characteristics of Alginic Impression Materials

Abstract

The current trend is the introduction of antimicrobial agents for the purpose of inhibiting or avoiding (adherence) adhesion and (increasing) the multiplication of their microorganisms on the surface of the impression materials. This study aims to determine the properties of antibacterial and antifungal elastic impression materials in full agreement with (bacterial flora) microflora specific for every patient ( with identification of existing species ). In the same time there are considered modern methods of sterilization and insertion of antiseptics, trajectories with profound impact in the field of biocompatibility. The obtained microorganisms were transplanted on differentiated and selective (differentiated) culture medium in order to obtain pure cultures.Each microbial strain obtained was tested to identify several characteristics. The examinations carried out by means of the electron microscopy very accurately detect the microbial load in the structure of the impression materials, sounding an alarm signal on its use in particular clinical situations. Alginates present in their structure polysaccharide structures that represent an excellent substrate of microorganisms.

The Effect of a Plasma With Platelet-rich Fibrin in Bone Regeneration and on Rate of Orthodontic Tooth Movement in Adolescents

“…PRF stimulates human osteoblastic proliferation, and histology has shown it to have an effect on neoangiogenesis. PRF is a second-generation platelet concentrate and is a gel-like matrix that contains high concentration of nonactivated, functional, intact platelets contained within a fibrin matrix that releases a relatively constant concentration of growth factors over a period of 7 days [1,[22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Interdisciplinary Therapeutic Approaches Based on the Relatioship Between Dental Pain Perception and NiTi Archwires Types, Evaluated in the First Months of Orthodontic Treatment

“…Contemporary dentistr y offers a wide range of biomaterials and techniques and modern technologies, which lead to substantial improvements in the treatment plans, both from the point of view of biocompatibility as well as from the biomechanical one, adding new possibilities of rebuilding morphology and affected stomatognat system functions [2].…”

“…Aesthetic treatment is very important in the diagnosis and treatment plan. The aesthetic requirement must be understood and dosed in the context of a complete treatment solution with the importance of other factors: mechanical, functional, biological and psychic, all the subordinate concept of a complex oral rehabilitation [3].…”

The Effect of ortho-Phosphoric Acid Etching Application on Enamel Surface ATR-FTIR and SEM studies

“…The number of composite resin restorations has increased lately due to both their special esthetic qualities and the advancements in enamel and dentine adhesion. But, the excess of remained unpolymerized dimethacrylate monomer and the etching procedures may cause cytotoxic effects [9][10][11].…”