Abstract: A polyurethane glove having improved tear and puncture resistance is made from the reaction product of an aliphatic diisocyanate, an aliphatic polyether diol having a molecular weight in the range of about 1,000 to about 5,000 and an aliphatic diol containing about 2 to about 6 carbon atoms.

Abstract: An improvement in an unitary preassembled intraoral dam for all dental procedures which comprises an extrudable thermoplastic polyurethane which is the reaction product of an aliphatic diisocyanate, a high molecular weight polyether diol, and a low molecular weight aliphatic diol. The improved polyurethane intraoral dam is impermeable to particles of 10 micrometers or greater, with a high degree of puncture and tear resistance, hemocompatibility, hydrolytic stability, non-cytotoxicity, thus guaranteeing the maintenance of a sterile operative field, and a high degree of prevention of contamination and infection for either patient or practitioner.