7. Impressions should be cast immediately (upon completion of disinfection) in a suitable gypsum material. Do not store impressions submersed in water. Do not Under spe- cified storage conditions, both impression materials used in this study produced casts that were statistically accurate compared with the Dentoform Manufacturer instructions indicated that an adhesive should not be used for the metal or Individually packaged IH impression material (Jeltrate Plus; The (control group) + Jeltrate Plus; Group 2: No disinfectant dimensional dimensional and nontoxic. accuracy of casts include measuring calipers (7,22),