title: Simultaneous Replacement of Maxillary Central Incisors with CEREC Biogeneric Reference Technique: A Case Report.
abstract: Biogeneric Reference Technique (BRT) of the CEREC 3D v.3.8 software is an effective technique for single anterior ceramic crowns because it provides computer-controlled match of the tooth form to the contralateral tooth. BRT also enables the fabrication of two or more anterior all-ceramic crowns simultaneously. This clinical report demonstrates the clinical application of BRT for designing and milling two central incisors in one appointment using a single optical impression. After completing the virtual design of the first central incisor, it was copied and a mirror image was created. The second central incisor was designed using this replicated image and therefore a computer-controlled symmetry was obtained. The crowns were milled from monolithic feldspathic ceramic blocks and adhesively luted with dual-cured resin cement following dentin conditioning. At the two-year follow-up appointment, the restorations were intact, no adverse effects were noted, and the resultant appearance was highly satisfactory for the patient. A step-by-step protocol is described from design to cementation of these restorations.
authors.affiliation: Professor, University of Istanbul, Faculty of Dentistry, Department of Prosthodontics, Istanbul, Turkey.
authors.forename: Gokhan
authors.initials: G
authors.lastname: Akgungor
authors.forename: Deniz
authors.initials: D
authors.lastname: Sen
authors.forename: Eray
authors.initials: E
authors.lastname: Bal
authors.forename: Mutlu
authors.initials: M
authors.lastname: Ozcan
keywords: CAD-CAM; CEREC; crowns; dental porcelain; resin cements