Which of the following statements regarding custom trays is, (are) true?
a. There is a primary sources of error which is eliminated: stresses during removal.
b. Although reducing the bulk of an elastomeric impression material increases its accuracy, the
opposite is true for reversible hydrocolloid impression materials.
c. Light-polymerized materials, when used for custom trays offer the advantage of convenience
because a storage period of 24 hours is not needed to allow for the completion of
poloymerization.
d. Even slight flexing of the custom tray will lead to a distorted impression which is usually
undetectable until one attempts to seat the restoration.
e. All of the above
Answer
Friday, February 01, 2008
Prosthodontics MCQ 6
Friday, February 01, 2008
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