We propose endogenous, value preserving (VP) welfare weights as an alternative to equal utilitarianism. VP require that the contribution of agent's endowments social is proportional final allocation his welfare. Under three axioms, per unit a good shown gradient function. coincide with Negishi in frictionless environments but prescribe redistribution toward good's owner when exceeds its market ...

objective: vertical root fracture (vrf) is among the most common causes of endodontic treatment failures. this study aims to compare charge-coupled devices (ccd) and photostimulable phosphor plates (psp) for detection of vertical root fractures in endodontically treated teeth.   methods: in this diagnostic in vitro study, 40 maxillary anterior teeth were selected and after preparation and root ...