background: for improving the quality of endodontic performance of practitioners in clinical practice, their basic, preclinical performance and knowledge must be taken into consideration. this study aimed to radiographically evaluate the technical quality of preclinical molar root canal treatments (rcts) performed by undergraduate dental students at a dental school in iran. further, the effect ...

  Objective (s): Scar formation in injured peripheral nerve bed causes several consequences which impede the process of nerve regeneration. Several animal models are used for scar induction in preclinical studies which target prevention and/or suppression of perineural scar. This study evaluates the translational capacity of four of physical injury models to induce scar formation aro...

neuropsychological studies have demonstrated that preclinical dementia accompanies a decreasing trend in cognitive state a few years prior to clinical diagnosis. sudden decline in episodic memory and semantic knowledge have been found to have the capability to differentiate patients in preclinical state of dementia from those experiencing normal aging. in addition, decline in episodic memory is...

Micro-editing procedures have a number of problems: often there are many checks with narrow tolerances resulting in too many mistakes that need to be resolved manually by analysts. The analysts cannot assess the relative importance of these errors. Each marked item has the same weight and needs the same amount of time for correction. However, many errors have a neglible impact on the final esti...

CONTEXT Ultrasonography is a valuable diagnostic tool in the clinical setting. Yet, medical students often have minimal familiarity with this technology. OBJECTIVE To evaluate the ability of second-year medical students to use ultrasonography for identification of anatomic structures and pathologic conditions. DESIGN A self-directed approach that reduced facilitator involvement, encouraging...

Purpose This work aimed at describing the time course of vitreous clearance through the use of positron emission tomography (PET) as a noninvasive tool for pharmacokinetic studies of intravitreal injection. Methods The pharmacokinetic profile of intravitreal injections of molecules labeled with 18Fluorine (18F) was evaluated in adult Sprague Dawley rats by using a dedicated small-animal PET/c...