نتایج جستجو برای: apical

تعداد نتایج: 30144  

Journal: :The Journal of chemical physics 2004
Ionela Ionescu Haiyan Fan Chris Annesley Ju Xin Scott A Reid

We report on the vibrational mode dependence of the 19F and 1H hyperfine interaction constants in the A1A" state of HCF, determined using polarization quantum beat spectroscopy. The nuclear spin/overall rotation coupling constants display a pronounced energy dependence and mode selectivity which can be traced to variations in both the A rotational constant and nuclear spin/electron orbital coup...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
yazdan shantiaee endodontic department, dental school, shahid beheshti university of medical sciences, tehran, iran. omid dianat iranian center for endodontic research, endodontic department, dental school, shahid beheshti university of medical sciences, tehran, iran. mohammad ali mozayeni iranian center for endodontic research, endodontic department, dental school, shahid beheshti university of medical sciences. mohammad tajedin department of pediatric dentistry, tehran azad university, tehran, iran; soheila darmiani dental research center, department of endodontics, dental school, birjand university of medical sciences, birjand, iran. golbarg kolahi ahari maba of general linguistics, endocrinology and metabolism research center, shahid beheshti university of medical sciences, tehran, iran.

objectives: different chelators may be used during root canal treatment, offering various advantages including lubricant effect inside the canal and smear layer removal. however, chelator residues in narrow root canals can lead to apical microleakage. the aim of this in-vitro study was to compare apical microleakage following the use of three root canal chelators via fluid filtration method in ...

Journal: :iranian endodontic journal 0
mahmoud-reza hamidi elham mahmoudi ali-akbar moghadamnia samir zahedpasha

introduction: leakage of the root canal system is an importent consideration when placing an intracanal medicament. the aim of this in vitro study was to compare the effect of calcium hydroxide and 1% chlorhexidine gel as intracanal medicaments on tooth apical seal. materials and methods: seventy extracted, single-rooted maxillary anterior teeth were divided into the three experimental groups (...

Abbas Mesgarani, Elham Dindar, Mahmood Reza Hamidi,

Introduction: This study aimed to evaluate and compare the apical sealing ability of different irrigation regimens (NaOCl, CHX, NS, and MTAD) . Methods: Seventy intact extracted single-rooted human teeth were selected. The roots were resected at 3 mm short of the apical foramen after access preparation. The canals were prepared with profile. This rotary file moved forward into the apical for...

Journal: :Chest 2021

TOPIC: Cardiovascular Disease TYPE: Medical Student/Resident Case Reports INTRODUCTION: Apical hypertrophic cardiomyopathy (AHCM) is an uncommon variant of (HCM). Significantly, sudden cardiac death less likely to occur in patients with isolated AHCM, and overall cardiovascular morbidity may be common than other HCM phenotypes. Available outcome studies are insufficiently powered for robust con...

Journal: :Wiener klinische Wochenschrift 2005

Background and purpose: The purpose of mechanical cleaning of the root canal is to clean the canal walls, create a conical shape to facilitate access, effective washing, and filling all areas of the root canal. Errors such as root canal transportation are cuased by excessive dentin removal from the canal. The objective of this study was to investigate root canal transportation by a BT Race rota...

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