Background: The aim of this study was to evaluate the cyclic fatigue and torsional resistance three thermally treated rotary instruments, such as: Logic 2 25.05 (LOG 25.05), Edge Taper Platinum 25.06 (EDT 25.06) ProTaper Gold 25.08 (PTG 25.08).Methods: A total 60 instruments LOG 25.05, EDT PTG were used (n=20). Cyclic tests performed at 36°C using an artificial stainless steel canal with...

INTRODUCTION This study investigated procedural errors made during root canal preparation using stainless steel and nickel-titanium (NiTi) instruments by undergraduate students, using two diagnostic imaging methods. MATERIALS AND METHODS Sixty human molars were divided into three groups (n=20; group 1: K-Flexofile, group 2: K3, and group 3: BioRace). The root canals were filled with gutta-per...

The purpose of this study was to compare the sealing ability of different tapered gutta percha cones that were used with lateral compaction and single cones in canals prepared with various root canal instruments. One hundred extracted maxillary incisor roots were used. In group 1, 30 roots were prepared with stainless steel instruments (SS) and then filled by the lateral compaction technique us...

The cleaning capacity of Hero 642 nickel-titanium files, complemented by the Hero Apical instruments in flattened roots, was determined by histological analysis, considering the area of action of the instruments on the coronal walls and the presence of remaining debris. Twenty-four single-canal, human mandibular incisors were divided into three groups and prepared as follows: GI, instrumented w...

Background and aims. This study aimed to investigate release of nickel ion from three types of nickel-titanium-based wires in the as-received state and after immersion in a simulated oral environment. Materials and methods. Forty specimens from each of the single-strand NiTi (Rematitan "Lite"), multi-strand NiTi (SPEED Supercable) and Copper NiTi (Damon Copper NiTi) were selected. Twenty specim...

We report on the first case in Ireland of ureteric stenting with shape-memory alloy nickel-titanium (Memokath 051) stent in relieving malignant ureteric obstruction. Successful drainage was achieved and the patient required no further intervention indicating a clear place for these stents in the long-term management of malignant ureteric strictures. The use of ureteric double-J stenting in the ...