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A modified digital workflow for fabricating tooth- and implant-supported conical crown-retained partial dentures
Min-Chieh Chang1, Po-Jan Kuo2, Che-Wei Lin3
1PhD candidate, Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan, ROC; Adjunct Lecturer, School of Dentistry, National Cheng Kung University, Tainan, Taiwan, ROC; and Adjunct Attending, Division of Prosthodontics, Department of Stomatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan, ROC.
None:
Removable partial dentures (RPDs) with flange extensions have been recommended for patients with few remaining teeth and extensive tissue loss. Conical crown-retained partial dentures (CCRPDs), a type of RPD, provide favorable clinical performance and patient satisfaction. However, the loss of inner crown retention and fractures at the soldered interface between outer crowns and frameworks remain of concern. Retention control with conventional casting techniques and differential vertical displacement between teeth and implants also present challenges. A digital workflow incorporating design modifications and selective laser melting to fabricate a tooth- and implant-supported CCRPD using a digitally defined fabrication approach is described.
