Polymethylmethacrylate (PMMA,or bone cement)is an acrylic,cement-like substance composed of a liquid methyl methacrylate monomer and a powder methyl methacrylate-styrene copolymer.What element is added to the powder component by the manufacturer to make the finished product radiopaque?

Question

Quizplus · Accepted Answer

The powder component is 10% barium sulfate,U.S.Pharmacopoeia (USP),which provides radiopacity to the finished product.The liquid monomer is highly flammable,and the OR should be properly ventilated.Caution should be exercised during mixing of the two components to prevent excessive exposure of OR personnel to the vapors of the monomer.This exposure can cause irritation of the respiratory tract and eyes.Personnel in a room where methyl methacrylate is being mixed should not wear soft contact lenses.

Polymethylmethacrylate (PMMA,or Bone Cement)is an Acrylic,cement-Like Substance Composed of a Liquid