Retrograde filling of a root canal in various forms of chronic periodontitis

Abstract

Various complications often occur after endodontic treatment including incompletely filled canal, break of an instrument in the root canal, root canals obturated by fixed anchor pins by means of glass inomer cement; teeth restored with stump tabs, with fixed crowns on them, bridge-like prostheses, crowns with fixing elements for clasp prosthesis, and telescopic crowns.