J Prosthodont 2015 Oct 19;24(7):589-593. Epub 2015 Jun 19.
The Royal London Dental Hospital and Queen Mary University of London, Barts and the London School of Medicine and Dentistry, London, UK.
Two clinical reports present an alternative design to address the problem of unfavorable implant angulations if a screw-retained prosthesis is desired. The restorations were designed as screw-retained prostheses, except in the area with the unfavorable implant screw emergence. The frameworks in these areas were customized to receive individual cement-retained crowns. This design offers retrievability and helps to minimize complications associated with excess cement without compromising the functional or esthetic outcome.