Background: To determine the performance of endocrown in badly broken carious teeth. Two patients with badly carious tooth in posterior region of mouth came to the dental college for treatment. Both patients were interested in conservative and permanent treatment of posterior teeth. As the crown height and occlusion were not permissible to do conventional crown, so decision was taken to do endocrown for both patients, in case–1 tooth no.46 and in case –2 tooth no.46. Both crowns were made with high strength CAD/CAM material i.e LAVA Ultimate a resin nanoceramic material and cemented with variolink resin cement. After cementation of endocrown clinical observation was done after one week, one month, three months, six months and eighteen months for retention, color changes, marginal ditching and partial or complete fracture and debonding of endocrown. According to observational parameter of clinical study both endocrowns were intact after every observation, retained properly, there is no color changes, marginal ditching, partial or complete fracture and has no complain about its function. Endocrown is alternate treatment plan in restorative dentistry after root canal treatment where badly broken teeth are present.