The International Journal of Prosthodontics
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Int J Prosthodont 30 (2017), No. 5     8. Sep. 2017
Int J Prosthodont 30 (2017), No. 5  (08.09.2017)

Page 490-495, doi:10.11607/ijp.5245, PubMed:28750106


Diagnostic Classification and Design Considerations for Implant-Supported Fixed Partial Dentures and Screw Access Channel: The ABC/PBC and SAC Classifications
AlHelal, Abdulaziz / Kattadiyil, Mathew T. / Clark, Jefferson L. / AlBader, Bader
Logical categorization of implant-supported fixed partial dentures (ISFPDs) based on implant angulation, abutment type, and screw access channel (SAC) design for screw-retained restoration is not available in the literature. This article proposes a simple classification system to describe implant angulations and prosthesis design affecting abutment selection (engaging or nonengaging) for ISFPDs. An additional classification that addresses screw access channel designs is also introduced. These classifications provide clear interpretation of clinical scenarios for ISFPD design consideration and a basis for categorization of future complications. The angulation-based and prosthetic-based classifications simplify communication regarding implant angulation and prosthesis design type for ISFPDs. The SAC classification assists in prosthetic design, factoring in function and esthetics when designing the screw access.
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