Monolithic Zirconia Posterior Single Crowns: a Randomized Clinical Trial.

Introduction Posterior implant single crowns have become the treatment of choice for single tooth replacement in the posterior sectors, due to its biological implications and minimally invasive approach since it requires no preparation of the adjacent tooth and enabling a more efficient hygiene for the patient than a bridge restoration. However, implant-based restorations require more time and economical resources from the patient and the dentist compared to traditional teeth-supported restorations.

Currently the main interest is set upon broadening the potential patient spectrum for this kind of therapies, which can only be achieved by significally reducing the clinical treatment time and technical production time while maintaining an acceptable profit ratio and good quality treatment outcome.

Objectives The main goal of this study is to determine whether monolithic screw retained posterior implant crowns (test) are more time-efficient than metal ceramic screw retained posterior implant. Moreover, as secondary objectives every screw retained crown will be submitted for Functional Implant Prosthodontic Score (FIPS) and Patient Related Outcome Measures (PROMs) evaluation. Hypothesis Monolithic screw-retained posterior single implant crowns performed through a full digital workflow are more time-efficient than conventional-digital workflow fabricated metal-porcelain screw-retained posterior single implant crowns.

Monolitihic single posterior screw-retained implant crowns achieve better quality outcomes than metal porcelain single posterior screw-retained implant crowns.

Material & Methods A total of 40 implants placed at Master de Integrada de Adultos will participate in a time- efficiency study that will compare monolithic screw-retained posterior implant crowns to metal ceramic screw-retained posterior implant crowns ( gold standard), moreover, every restoration will be submitted for Functional Implant Prosthetic Score (FIPS) and Patient Related Outcome Measures (PROMs)

Inclusion criteria

• Restorable implants
• No signs or previous history of periimplantitis
• Natural antagonist teeth
• Natural adjacent teeth

Exclusion criteria

• Non restorable implants
• Signs or previous history of periimplantitis
• No natural antagonist teeth
• No natural adjacent teeth