Yaşar Meriç Tunca

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OBJECTIVE The aim of this study was to investigate the effect of sodium hypochlorite immersion on the surface characteristics of RaCe rotary nickel-titanium instruments using atomic force microscopy (AFM). STUDY DESIGN Four new RaCe instruments were used in this study (two 30.06 and two 30.02). One 30.06 and one 30.02 instrument were immersed in sodium(More)
Propolis is an agent having antimicrobial properties, however, its composition can vary depending on the area where it is collected. In the present study, the antimicrobial activity of five propolis samples, collected from four different regions in Turkey and from Brazil, against nine anaerobic strains was evaluated. Ethanol extracts of propolis (EEP) were(More)
OBJECTIVE This study aimed to test the hypothesis that aggressive dentin removal through greater-tapered instrumentation reduces the intracanal bacteria more effectively than conservative dimension instrumentation. MATERIAL AND METHODS Twenty extracted human lower premolar teeth were used. After extirpation of the pulps, the teeth were autoclaved and(More)
OBJECTIVE Widespread use of rotary nickel-titanium systems has caused manufacturers to produce gutta-percha cones that match the taper of the canals prepared with these systems. Obturations with these cones may provide 3-dimensional obturation of the root canal in less time. The aim of this study was to use a fluid filtration method to compare the apical(More)
INTRODUCTION This single-blind, randomized controlled trial aimed to evaluate whether foraminal enlargement (FE) with a continuous rotary system during endodontic treatment causes more postoperative pain than nonforaminal enlargement (NFE). METHODS Seventy qualified patients were randomized into 1 of 2 groups in a 1:1 ratio using a series of random(More)
OBJECTIVE This study compared the cyclic fatigue resistance of ProTaper rotary nickel-titanium (NiTi) files in artificial canals with 2 different radii of curvature. STUDY DESIGN One hundred ProTaper rotary instruments were used in this study. Twenty files of each size (S1, S2, F1, F2, and F3) were tested. Cyclic fatigue testing was performed using a(More)
OBJECTIVE This study compared the shaping ability of Hero Shaper and RaCe instruments in simulated curved canals. STUDY DESIGN Forty simulated canals in resin blocks were divided into 2 experimental groups, each comprising 20 resin blocks, and prepared with Hero Shaper and RaCe using the crown-down technique. Preoperative and postoperative photographs,(More)
Mineral trioxide aggregate (MTA) is being advocated for vital pulp therapy. In the case of direct pulp capping, hemorrhage control is an important step on success, but little is known about the effect of MTA on pulpal bleeding. In addition, there has been a lack of information on the effect of MTA on smooth muscle contraction, such as can occur in the blood(More)
OBJECTIVES The control of postoperative pain is very important for the success of root canal treatment. The aim of this study was to research the factors that affect pain periods and pain intensity during and after endodontic treatment. METHODS The study included 128 patients. The teeth were grouped according to their type, location and vitality. Root(More)
effects in bee-venom-treated patients and in those with rapid dose increase. Methods: This report describes the first case of a patient in the literature with Jessner’s Lymphocytic infiltration as a side effect of venom immunotherapy. This is a chronic, benign, T cell pseudolymphoma characterized by the occurrence of recurrent, asymptomatic, smooth,(More)