Bone Embedding Technique with Inhibited Pmma Monomer

Unwashed inhibited thin and thick methyl methacrylate monomer was used for successful embedding of bone by increasing the quantity of benzoyl peroxide catalyst until the activity of the hydroquihone inhibitor was overwhelmed. Seven bones were embedded using 1, 2, 4, 6, 8, 10 or 12 grams of benzoyl peroxide per 100 milliliters of thick monomer. Two grams per 100 ml was found to be optimal. Higher concentrations resulted in uncontrolled polymerization while at 1 g/100 ml the solution remained liquid.