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Sunday, June 29, 2008

Prosthodontics MCQ 49

Sunday, June 29, 2008

Which of the following statements regarding the film thickness of dental luting cements includes are true?

    1. ADA Specification No. 8 Type I states that film thickness be 100 um (maximum).

    2. Zinc phosphate is generally the thickest of the luting agents

    3. Polycarboxylate cement has one of the highest compressive strengths, but, does not meet the maximum thickness guidelines.

    4. Polycarboxylate cements yields a film thickness of 25 um or less due to the action of spatulation and seating with a vibratory action to reduce the viscosity.

    5. Glass ionomer luting cements are a type I cement with a particle size of 15 um or less.

  1. 3 only

  2. 1 and 3

  3. 1 and 2

  4. 1, 2, 3

  5. 4 and 5

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