MODERN METHODS OF PREVENTION AND TREATMENT OF HYPERESTHESIA CAUSED BY SHARPENING IN ORTHOPEDIC DENTISTRY

Based on the analysis of special literature, modern methods of prevention and treatment of postoperative dental hyperesthesia were studied. Modern methods of preventing hyperesthesia after preparation aim to maintainthe viability and activity of the toothpulp. In contrast,grinding teeth should be carried out in conditions protected from external influences. Artificially synthesized hydroxyappatite, modern desensitizers, electrophoresis 30%, silver nitrate solution, 1% sodium fluoride solution, potassium nitrate, low-intensity laser is effective in modern prevention and treatment of sensitivity after grinding.Taking into account the safety zones on the teeth is an important factor in preventinghypersensitivity after tooth preparation.Our research on this topic confirms that the above approaches prevent damage to the pulp tissues of the tooth. The use of the above methods of prevention prevents injury to the pulp of healthy teeth, which significantly reduces complications in dental prostheticsKeywords:Teeth preparation, hyperesthesia, desensitizers, low intensity leser, high intensity leser, adhesive systems, primer, bonding

Effects of 2% sodium fluoride solution on the prevention of streptococcal adhesion to titanium and zirconia surfaces

Streptococci are associated with dental plaque formation as the early-colonizing bacteria that adhere to titanium (CpTi) and zirconia (TZP) implant abutment surfaces. Effective prevention of peri-implantitis may be possible by removing streptococci as target. This study aimed to evaluate the effects of 2% NaF on the prevention of streptococcal adhesion to CpTi and TZP. After immersion in 2% NaF for 90 min, surface characterization of mirror-polished CpTi and TZP disks were assesed using XPS, EPMA, and SEM. S. sanguinis, S. gordonii, and S. oralis were used as the streptococcal bacterial strains. After 24 h culture, bacterial adhesion was evaluated using an ATP-bioluminescent assay and SEM. In XPS, EPMA, and SEM analyses, fluoride was detected on the CpTi and TZP surfaces after 2% NaF immersion with no signs of localization, and no corrosion on the CpTi disks. Based on the adhesion assay, the adherences of S. sanguinis, S. gordonii, and S. oralis were significantly lower with NaF than without NaF in CpTi (p = 0.005, 0.001, and 0.001, respectively) and TZP (p = 0.003, 0.002, and 0.001). This was also confirmed by SEM. In conclusion, 2% NaF reduced the adhesion of streptococci to the CpTi and TZP surfaces.