introduction: the purpose of this study was to evaluate the efficacy of three methods in removal of resilon/new epiphany self-etch (se) soft resin endodontic obturation system. materials and methods: thirty extracted single rooted human teeth were prepared for endodontic treatment and obturated with resilon/epiphany se. the roots were randomly divided into three groups; group 1 roots were retre...

In the mid and late 1960s, Paul Ekman offered a variety of bold assertions, some seemingly more radical today than others (Ekman, 1984, 1992, 1993). Emotions are expressed in a limited number of particular facial expressions. These expressions are universal and evolved. Facial expressions of emotion are remarkably brief, typically lasting 1 to 5 s. And germane to the interests of the present ar...