Extensive research has attempted to determine which materials demonstrate superior qualities in all situations. No material has been found to be universally superior. However, some circumstances favor the use of specific materials. It is imperative that the clinician recognize the clinical factors that dictate choosing one material over another. Cavit is a commercially prepared, premixed, polyvinyl chloride acetate-calcium sulfate cement catalyzed by contact with water or oral fluids.
TERM is a predosed visible light-cured resin.
Its advantages include better esthetics than IRM and Cavit and possibly less leakage when insufficient space exists for sealing with Cavit. Amalgam is also advocated as a material of choice for sealing the access preparation. Comparisons of various materials Despite a multitude of materials used for temporary filling of endodontic access preparations, only Cavit and IRM have withstood the rigors of testing and evaluation. These materials will provide an adequate seal and strength if used in sufficient thicknesses. This is necessary to prevent masticatory forces from causing the temporary filling material to be pushed in an apical direction thus destroying the marginal seal.