National Dental Examining Board of Canada (NDEB) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the National Dental Examining Board of Canada (NDEB) Test. Study with flashcards and multiple choice questions, each question offers hints and detailed explanations. Achieve success in your exam!

Start Multiple Choice Practice Test
Start Flash Cards

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!

Practice this question and more.

What type of die stone is used for a PFM crown with a PVS impression?

  1. Type II

  2. Type III

  3. Type IV

  4. Type V

The correct answer is: Type IV

The correct type of die stone for a PFM crown with a PVS impression is Type IV. Type II is too weak and will not withstand the heat of the porcelain firing process. Type III is too strong and may cause inaccuracies in the final crown fit. Type V is typically used for implant cases, so it is not the appropriate choice. Type IV is specifically designed for use with PVS impressions and provides the optimal balance of strength and accuracy required for a PFM crown.

More Questions Like This