background: the strong link between sealer solubility and periapical reinfection indicates that water solubility of new sealers should be studied. this study aimed to assess the water solubility of five root canal sealers (ah-26, topseal, 2-seal, acroseal, and roeko seal automix [rsa]). materials and methods: in this in vitro experimental study, 30 specimens were fabricated from each of the abo...

in analyzing and explaining seal of prophethood as a doctrine, almost all scholars who have dealt with this issue considerhuman intellectual maturityas the main criterion and the secret of the emergent finality.the present article explains and analyzes the proposed approaches and perceptions regarding intellectual maturity and thus aims toreview this idea critically.as a result,the study shows ...

the study of seals and seal impressions can make clear the dark corners of the social history of the seleucid and parthian. on the other hand, the analysis of personal and social position of individuals or groups for understanding the complicated relationship between human with other people or groups, also for the understanding of interactional relationships has gained special attention in hist...

At a time of drastic change in the environment surrounding financial institutions, administrative work centralization aimed at reducing the workload of the back office has propelled the introduction of cost-effective image processing systems geared toward centralized operations. Further, in an effort to prevent forgery, more and more institutions have done away with duplicate seals and are intr...

the results of the initial study. It was concluded that the apical fluids, with their primary source being blood serum, diffuse into the empty canal spaces, stagnate, undergo degradation and then act as a physicochemical irritant when they diffuse back into periapical tissues. In support of this theory of stagnation, in 1955 Dow and Ingle showed that the majority of the endodontic failures were...

introduction:  this  in vitro  study compared the apical sealing ability of three common root end filling materials namely mineral trioxide aggregate (mta), intermediate restorative material (irm) and calcium-enriched mixture (cem) cement using a bacterial leakage model.  methods and materials: the study was conducted on 83 single-rooted human teeth. tooth crowns were cut and root canals were p...