Bob Conte Here is a case where the patient fractured a large existing composite restoration. The tooth had some interesting characteristics remaining that were worth duplicating in the final crown, so the design mode BioCopy was used. This mode also ensures a very accurate occlusion with rarely an adjustment needed post cementation. The case was scanned preoperativley in the BioCopy folder. The contents are copied into the prep folder and the fractured tooth is then cut out of the pre-op image. Once the tooth was prepared a second scan is taken of the prep only. This ensures a perfect stitch every time. The BioCopy line was positioned to include all of the data that we wanted to reporoduce in the final crown, namely that cool little incisal wear facet. The final proposal was barely altered and the crown was milled out of Celtra Duo LT A3.5. Celtra stains and glaze were used to add a little character. The crown was cemented with Variolink Esthetic neutral.
