Abstract
For last three years authors have used processed heterogenous bone in surgeries on the paranasal sinuses or on the ear and in reconstructive surgeries of the face.
Reviewing the results obtained from above experience authors concluded that this material has been proved to be a satisfactory substitute for the autogenous bone and be applicable to a variety of surgeries of the otolaryngology if indication is meticulously selected because of the great advantage that this is obtainable at any size or any shape required without unnecessary injuries to the patients.
