these include reversible hydrocolloid this includes agar impression material, irreversible hydrocolloid this includes alginate impression material, modelling plastic impressions these includes impression compounds
, plaster impression material, wax impression material, silicone based impression materials, polysulfide impression materials and polyether impression materials.3
Polyvinylsiloxane, polysulfide, impression compound
, and Zinc oxide eugenol (ZOE) impression materials are thoroughly rinsed under water and immersed in a 5.25% sodium hypochlorite solution for 10 minutes (9-12).
The tray was border- molded using green stick impression compound
taking care to avoid overextension.
The most common source of accidental injuries were burs used in high speed hand pieces (60.3%) followed by burns from impression compound
Final Impressions were made using an admix of three parts by weight of impression compound
and seven parts by weight of tracing compound.