Which of the following is an  adhesive perforation repair material:: (A) Calcium sulphate., (B) Amalgam., (C) ZOE., (D) Geristone.
Answer is D. Geristore (Rapid setting resin-glass ionomer hybrids)-

Has good capacity of bonding with the tooth structure

Recommended for:-

Root-end filling material
Restoring subgingival surface defects
Root surface caries
External root resorption lesions
Iatrogenic root perforations
Subgingival oblique fractured roots