“Cavity preparation is defined as mechanical alteration of defective, injured or diseased tooth in order to receive a restorative material which will reestablish a healthy state for the tooth including esthetic corrections where indicated, along with normal from of function� 37.

The increased depth of cure of a newly introduced high density posterior composite (Surefil), upto 5 mm evaluated by using the Vicker’s hardness test, and microhardness was compared between 2 mm and 5 mm specimens. The specimen for the studies were prepared from a standardized and detachable teflon mold. The result were tabulated.

This study was carried out on 21 patients showing periapical rarefaction to evaluate and compare the effectiveness of zinc oxide eugenol and Endoflas F.S. as root canal sealer both clinically and radiographically in single visit endodontic therapy. Endoflas F.S. is a zinc oxide eugenol based cement that has been modified by incorporating calcium hydroxide, iodoform and paramonochlorophenol. Both the sealers showed comparable results clinically and radiographically and rate of success in both the groups was 100% irrespective of culture findings before root canal obturation.

“FUSION� –is one of the developmental disturbances that alter the natural shape of the teeth. It can be seen occur in either the primary or permanent dentition. A case report of splitting and endodontic treatment of maxillary central incisors that fused with supernumerary teeth is presented. The fused maxillary central incisors was in malposition on the maxillary arch and the permanent lateral incisors were placed palatally, which required orthodontic treatment. Here the fused teeth were splitted and endodontic therapy was done for the right maxillary fused central incisors – 11. The palatally placed permanent lateral incisors were extracted and the case was referred to orthodontia department.

Dr. G. V. Black’s classification & principles, though given more than hundred years back are still being widely used and universally accepted. However, there is surging need to improve upon the older classification of carious lesions\cavities so as to add areas left by Black. I am proposing a modified classification of cavities\carious lesions which would allow a more comprehensive yet easy identification of different lesions.