Clasp_Adaptation

Adapting a Crown to an existing RPD without sending the partial to the lab. A technique for indexing partial denture rests and clasps to the underlying preparation using Ramitec^®, or any heavy bodied, highly viscous PVS or Polyether. This procedure is performed in the mouth. Stone models shown in photos are for demonstration only.
1	2 .
1. Prep tooth, pack cord, and take impression. A pre-op study cast is helpful.	2. Mix a small amount of Ramitec; about the size of a piece of chewing gum. Place Ramitec over the preparation covering the entire prep, the margins, and just touching the contacting proximal teeth.
3	4
3. Seat the partial clasp and rest onto the Ramitec, being certain to get a very clear impression of the cleaned and polished underside of the clasp and rests. ( the surfaces contacting the tooth)	4. Be certain not to bury the clasps or rests, or incorporate any creases or bubbles. Allow Ramitec to set completely before removal.

This index will enable the technician to make an acrylic reproduction of
the clasps and rests in relation to the prep and proximal teeth.

Ramitec^® from ESPE - a heavy bodied, highly viscous, yellow polyether impression material for bite registration.