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Which of the following is a critical error of a final impression?

Briefly describe the two key pieces of evidence that support the Big Bang theory.

Why do spiral arms have a blue color?

Propagation is the phase of addition polymerization that is initiated by the free radical. Termination is when the free radical is destroyed.

The metal area of a PFM crown where the porcelain is to be bonded is _______ mm thick.

Which of the following is true when comparing plastic (acrylic) and porcelain denture teeth?

After the substructure for a porcelain-bonded-to-metal crown is cast in metal, why is it heated at high temperature?

How would you explain the concept of immediate loading of an endosseous implant? 1. The implant gets its stability in bone from the loading rather than osseointegration.2. Immediate loading could be accomplished if the implant fixture is long and wide enough to engage the bone.3. Immediate loading would cause movement which would result in failure to integrate with bone and loss of the implant.4. The success rate for implants with immediate loading is higher than implants that are allowed 3-6 months of healing prior to placement.

Which type of polishing material is safest to use on a ceramic restoration once cemented?

Expansion of which dental cement, as it absorbs moisture, is a concern when cementing all ceramic indirect restorations?