The variation of three-dimensional facial image of edentulous patients restored by complete denture

• 1、Department of Geriatrics, School and Hospital of Stomatology, Peking University, Beijing 100081
• 2、Department of orthodontics , School and Hospital of Stomatology, Peking University, Beijing, 100081
• 3、Department of Geriatrics , School and Hospital of Stomatology, Peking University, Beijing, 100081

Abstract：Objective To collect and analyze the three-dimensional （3D） facial profile variation of edentulous patients restored by complete denture. Method The 3D facial images of 20 Kennedey Class II edentulous patients were taken by DSC-2 three-dimensioual facial imaging system before and after restoration of complete denture．Then, the two 3D facial images of each patient were registered in the same coordinate system by partial structure overlap. The differences between these two 3D facial images were statistically analyzed. Results The major facial profile variation of Kennedey Class II edentulous patients restored by complete denture focus in the area around upper lip and the corner of mouth. The change of lower lip and chin area was not obvious. The shift in the sagittal direction was significantly bigger than that in the vertical direction, while the shift in the horizontal direction was the least one. Conclusion The pattern of facial profile variation of edentulous patients restored by complete denture based on 3D imaging may provide reliable data support for prediction and communication in clinic.small, and could be accepted clinically. The CBCT measurement showed high reliability.

Keywords： Three-dimensional imaging Facial profile Complete denture restoration