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A technique for transferring a patient's smile line to a cone beam computed tomography (CBCT) image
1Assistant Professor and Assistant Program Director, Post-Graduate Prosthodontics, University of Connecticut Health Center, Farmington, Conn; Private practice, Meriden, Conn.
Abstract:
Fixed implant-supported prosthodontic treatment for patients requiring a gingival prosthesis often demands that bone and implant levels be apical to the patient's maximum smile line. This is to avoid the display of the prosthesis-tissue junction (the junction between the gingival prosthesis and natural soft tissues) and prevent esthetic failures. Recording a patient's lip position during maximum smile is invaluable for the treatment planning process. This article presents a simple technique for clinically recording and transferring the patient's maximum smile line to cone beam computed tomography (CBCT) images for analysis. The technique can help clinicians accurately determine the need for and amount of bone reduction required with respect to the maximum smile line and place implants in optimal positions.
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