introduction: the purpose of this in vitro study was to compare the coronal seal of four temporary filling materials, coltosol, zonalin, zamherir, and intermediate restorative material (irm) by the india ink dye penetration test. materials and methods: endodontic access preparations were prepared in 120 extracted intact human premolars. the teeth were randomly divided into six groups including ...

STATEMENT OF PROBLEM Hemostatic agents may affect the micro-leakage of different adhesive systems. Also, chlorhexidine has shown positive effects on micro-leakage. However, their interaction effect has not been reported yet. OBJECTIVES To evaluate the effect of contamination with a hemostatic agent on micro-leakage of total- and self-etching adhesive systems and the effect of chlorhexidine ap...

Objective. This study compared the leakage resistance of a New Sealer Prototype (NSP) with a traditional sealer (AH 26) in Resilon-filled roots subjected to a bacterial challenge. Study Design. 41 roots were instrumented to ISO size 50 apically. Group 1 (n = 20) contained Resilon and AH 26 sealer and roots in group 2 (n = 21) contained Resilon and NSP. Roots were embedded in a dual-chamber mode...

In order to guard against the leakage of important data in the system, a new model of data protection is proposed in the paper, which is also targeted at the shortcomings in the existing data protection technology in the field of data leakage prevention. By taking advantage of TPM data protection technique as well as the combination of symmetric encryption and asymmetric encryption, a new data ...