RETROGRADE FILLING MATERIALS-A REVIEW

DENTISTRY

Root end filling materials In an endodontic surgery are generally used to seal off the root ends.(1) The root end filling materials should provide an apical seal and prevent the bacterial passage inside the root canal. They are used in consideration to prevent the exit of unobturated root canal or to improve the seal of existing root. Once the root end preparation is completed Suitable root end material should be placed. These material should provide adequate amount of radioopacity inorder to be distinguished among other anatomical structures such as bones and tooth. Zinc oxide Eugenol was used since the discovery of the root end fillings in 1936 by Grossman. IRM Is a polymethacrylate reinforced zinc oxide eugenol cement recently indicated as the root end filling material (2). Throughout the field of dentistry various materials has been used as the root end filling although all materials are not found to fulfill the physical properties for retrograde filling material.

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