Since inlays and onlays are prepared in our laboratory, the treatment takes two or three sessions. At the first appointment, the decay is removed and the measurement of the tooth to be prepared, and the surrounding teeth, is taken. The tooth is sealed with a temporary filling material. The measurement is sent to our laboratory. In the second appointment, the temporary filling is removed. The inlay or onlay is trialed on the tooth, and then adhered with a bonding system and special adhesive. They can then be adjusted based on the patient’s bite pattern.