Which type of glass has residual surface compression in excess of 10,000 psi (70 000 kPa)?

A patient arrives at the emergency department complaining of pain in the calf of his left leg and shortness of breath. A "stat" D dimer is ordered. Why is this useful information for this patient's care?

a. An elevated D dimer supports the possibility of deep vein thrombosis. b. An elevated D dimer is diagnostic for deep vein thrombosis. c. A normal D dimer is diagnostic for deep vein thrombosis. d. This was not an appropriate test to order on this patient.

If the sealant is too high in occlusion, the patient will wear it down in a ____________

a. couple of days b. month c. year d. The sealant must be removed and replaced.