The procedure would start with applying local anesthesia. Then the decay would be removed so that it cannot go any further inside the tooth and cause more complications. Once this is complete, dental impressions would be taken so that customized Inlays and Onlays can be made that would fit your teeth perfectly. For the time being, you might be given a temporary filling until the permanent one is ready. To conduct the whole procedure, you would have to visit the clinic twice.