INBDE (Integrated National Board Dental Examination) Practice Exam

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Study for the Integrated National Board Dental Examination with engaging quizzes and detailed multiple-choice questions. Each question comes with hints and explanations to ensure you grasp essential concepts. Prepare effectively for your dental career!

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What is the ideal polymer to monomer ratio for PMMA acrylic?

The correct answer is: 3:1

The ideal polymer to monomer ratio for PMMA acrylic is 31. This ratio allows for a balanced and strong molecular structure in the final product. Option A (2:1), although close to the correct ratio, may result in a weaker final product due to a decrease in the amount of monomer present. Option C (4:1) may lead to a more brittle final product as there is a higher concentration of monomer present. Option D (1:2) would result in an excessive amount of monomer, making the polymer less stable and potentially compromising its mechanical properties. Therefore, option B (3:1) is the most suitable ratio for PMMA acrylic.