What is polyvinylsiloxane used for?
  1. Centric positioning
  2. Pantographs
  3. Bite registration
  4. Bridge registry
Explanation
Answer - C - Polyvinylsiloxane is used for bite registration. In fewer than five minutes, a glutinous liquid sets into elastomeric material to achieve bite registry. Plaster of Paris is often used to achieve the same result.
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