AIM To compare the shaping ability of four different nickel-titanium rotary instruments during the preparation of curved root canals in extracted teeth. METHODOLOGY A total of 80 root canals with curvatures ranging between 25° and 39° were divided into four groups of 20 canals. Based on radiographs taken prior to instrumentation, the groups were balanced with respect to the angle and the radi...

Zygomatic fractures are the second most common facial bone fractures encountered and treated by plastic surgeons. Stable fixation of fractured fragments after adequate exposure is critical for ensuring three-dimensional anatomic reduction. Between January 2008 and December 2010, 17 patients with zygomatic fractures were admitted to our hospital; there were 15 male and 2 female patients. The ave...

AIM The aim of this study was to evaluate the radiographic technical quality of endodontic treatment performed by undergraduate students at the School of Dentistry, Faculty of Medicine, University of Novi Sad, Serbia. MATERIALS AND METHODS Electronic records of 220 patients treated by final-year undergraduate students during the school year 2011/2012 were examined, and the final sample consis...

Introduction: In the scenario of endodontic treatment, fracture instrument complicates procedure by obstructing debridement, delaying completion and affecting patient's dental experience. When a file fractures during root canal several treatment options are available. Fractured instruments inhibit optimal cleaning filling canals. Objective: To carry out brief systematic review study to present ...

This study investigates the relationship between the epidemiology of hand fractures and social deprivation. Data were collected prospectively in a single trauma unit serving a well-defined population. The 1382 patients treated for 1569 fractures of the metacarpals or phalanges represented an incidence of hand fracture of 3.7 per 1000 per year for men and 1.3 per 1000 per year for women. Depriva...

Freeze-fracture/freeze-etch describes a process whereby specimens, typically biological or nanomaterial in nature, are frozen, fractured, and replicated to generate a carbon/platinum "cast" intended for examination by transmission electron microscopy. Specimens are subjected to ultrarapid freezing rates, often in the presence of cryoprotective agents to limit ice crystal formation, with subsequ...

INTRODUCTION Instrument separation is a serious concern in endodontics. Stainless steel instruments usually deform before they separate whereas Nickel Titanium instruments do not show any sign of deformation. AIM of the present study was to compare the cyclic rotations needed to fracture three different rotary nickel titanium endodontic instruments namely Profile, K3 Endo, RaCe in simulated c...

block heights and capillary continuity between matrix blocks play paramount role in the sensitivity analysis and therefore the history matching of cumulative oil production and production rate of carbonated fractured reservoirs. in this study, the influence of these parameters upon cumulative production and recovery factor of an iranian fractured reservoir were studied by the usage of a simulat...

OBJECTIVE To understand the potential fracture mechanism of sternal wires, we collected extracted stainless steel sternal wires from patients with sternal dehiscence following open-heart operations. Surface alterations and fractured ends of sternal wires were inspected and analyzed. METHODS Eight fractured and 12 non-fractured wires extracted from five patients (closure method: figure-of-eigh...