Polyvinylsiloxane based curable dental retraction composition

摘要

Disclosed herein is a two part retraction system that can be inserted into the sulcus to form a semi-rigid porous elastomer releasing a hemostatic agent suitable for sulcus retraction such that a dental impression may be completed by a dental practitioner.

主权项

1. A two part retraction system comprising:
a base paste and a catalyst paste, wherein the base paste comprises (1) a crosslinker capable of releasing hydrogen gas upon combination with the catalyst paste having a hydrosilation catalyst at room temperature, (2) a vinyl fluid, (3) a non-reinforcing filler, (4) a reinforcing filler, (5) optionally a hydroxy terminated polydimethylsiloxane, and (6) optionally a hydrophilic additive, and the catalyst paste comprises (1) a vinyl fluid, (2) a hemostatic agent, (3) a non-reinforcing filler, (4) a reinforcing filler, (5) a platinum complex hydrosilation catalyst, and (6) a retarder, wherein the hemostatic agents is ferric sulfate, ferric chloride, a mixture of ferric sulfate and ferric chloride, permanganates, zinc chloride or a water soluble astringent aluminum salt.