The performance of a resin-impregnated cast material has been studied in seventy-nine patients representing 118 applications. This material is a ready-to-use bandage of plaster-of-Paris, resin, and catalyst, bonded to crinoline.
Characteristics in which this material differs from plain plaster are discussed. It is water-resistant and stands up well under hard wear. Its initial setting time is slower than that of plaster; it is more difficult to mold and to remove when dry. A unique property is its ability to "heal" after cracking or laminating, apparently without losing either its strength or its wearing quality. Specific problems for which the material was used are discussed and illustrative cases are presented.