Mastering Impression Compounds

40-45°C

80-85°C

70-75°C

55-60°C (correct)

Type I is lower fusing and supplied in the shape of tray, while Type II is higher fusing and supplied in sheets or sticks form. (correct)

Type I is stiffer and has less flow than regular impression compound, while Type II is softer and has more flow.

Type I has more thermoplastic compounds than Type II.

Type I is used for border molding of an acrylic special tray, while Type II is used for primary impression for edentulous ridges.

It becomes too soft and difficult to handle

It becomes brittle and cracks easily

It becomes too hard to manipulate

It becomes sticky and difficult to handle (correct)