Shaping Ability of Superelastic and Controlled Memory Nickel-Titanium File Systems: An In Vitro Study.

Improvements in the thermomechanical processing procedures of NiTi wires have led to the development of new NiTi instruments that compose mainly of martensite crystals, making the wire stable at clinical condition. This study aimed at comparing the shaping ability of two rotary nickel-titanium systems manufactured from different NiTi wires. Twenty simulated root canals each with a curvature of 35° in resin blocks were divided into two groups of 10 canals each.

Comparison of the shaping ability of GT® Series X, Twisted Files and AlphaKite rotary nickel-titanium systems in simulated canals.

Background: Efforts to improve the performance of rotary NiTi instruments by enhancing the properties of NiTi alloy, or their manufacturing processes rather than changes in instrument geometries have been reported. The aim of this study was to compare in-vitro the shaping ability of three different rotary nickel-titanium instruments produced by different manufacturing methods.

Methods: Thirty simulated root canals with a curvature of 35˚ in resin blocks were prepared with three different rotary NiTi systems: AK- AlphaKite (Gebr.

[Antibiotic prophylaxis for patients with joint prostheses undergoing dental treatment--a topic for discussion].

Aim: In accordance with international guidelines, the German Society for Cardiology and the Paul Ehrlich Society for Chemotherapy recently adapted their recommendations for antibiotic prophylaxis of infectious endocarditis. The new version reflected the statistically lower risk for such infections as compared to former considerations and reduced the group of patients who would benefit from the prophylaxis. That paper as well as an increasing number of statements of orthopaedic/traumatologic or dental societies stimulated our contribution on the prevention of prosthesis infections after dental care.

[Correlation of endometric results with the conditions in the root canal].

The correlation of endometric measurements with physical indicators, such as electrode impedance, electrolyte conductivity, in canal geometry and measuring electrode insulation, seems to be secured by the coincidence between the results of experimental and theoretical calculations. The measuring principle on which the currently available endometric instruments operate, do offer the measuring accuracy required for clinical use.

[A novel method of conservative therapy of infected dental root canal by means of chlorhexidine and corticoids].

The treatment of the acute phase within the therapy of the infected root canal is possible using a combination the antiphlogisticum Triamcinolon and the disinfectant chlorhexidine. The medical agent TS 74 (Forapical) was used in 82 teeth of acute or acute exacerbated chronical periodontitis. Successful conservative treatment was observed in 90% of all cases.