INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What percentage of shrinkage does cobalt chromium undergo, potentially causing irregularities and porosities?

1%
1.5%
2%
2.3%

The correct answer is: 2.3%

Cobalt chromium alloy typically undergoes a shrinkage percentage of about 2.3% upon casting. This shrinkage can result in irregularities and porosities in the final cast restoration if not accounted for properly during the fabrication process. It is crucial for dental professionals working with cobalt chromium alloys to be aware of this shrinkage phenomenon to ensure the production of high-quality dental restorations. Options A, B, and C are incorrect as they provide percentages of shrinkage that are lower than the typical 2.3% shrinkage experienced with cobalt chromium alloy casting.