Tooth-colored Onlay Restorations of cusp-fractured Maxillary Premolars-Cases Report

It is always a challenge for clinicians when a missing functional cusp of a maxillary premolar has to be replaced. In the past, we used pins to retain the restoration, but the remaining cusp tended to become weak and fractured during axial loading. With improvements in adhesive techniques and the development of computer-aided techniques, we now offer more-conservative treatment for patients. The CEREC system is the only chair-side treatment equipment currently available. It has several advantages including a single-appointment finish, fine esthetic outcome, good clinical performance, preservation of more tooth structure for better longevity, and several shades of ceramic blocks to choose from. In all 3 cases we present, we utilized the CEREC onlay to replace the palatal cuspal fracture which occurred in 3 maxillary premolars. In the first case, we utilized the CEREC onlay to replace the functional cusp of a premolar and followed it up for more than 10 years. In the second and third cases, we used a CEREC onlay to restore maxillary premolars which had been extensively destroyed. Clinical results of all 3 cases were quite satisfactory, and the restorations have survived to the present. In this report, we present our treatment experience and provide another treatment option for clinicians who might have come across the same problem.

並列關鍵字

functional cusp fracture ； cusp replacement ； CEREC onlay ； maxillary premolar

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