NCT04160247

Angulated Screw-retained Crowns Following Immediate Implant Placement

Clinical Evaluation of Cemented and Angulated Screw-retained Crowns Following Immediate Implant Placement: a Randomized Controlled Clinical Trials

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 40 (actual)
• Sponsor: Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

There are two choices of restorations and implant abutments connection now: cemented and screw-retained.The excess cement, which would be difficult to completely remove, might lead to series of biological complications. The angulated screw channel (ASC) abutments, which recently introduced by Nobel Biocare , largely address the problem with visible screw access that may compromise esthetics. However, all of the present studies were clinical reports, thus the clinical efficacy of ASC abutments still needs the verification of evidence-based medicine with larger sample. Therefore, we designed a randomized controlled clinical trial study, aiming to verify the clinical efficacy of the ASC abutments by comparing screw-retained (with ASC abutments) single implant crowns with cemented ones in esthetic region.

Conditions

• Tooth Diseases

Interventions

Type	Name	Description
PROCEDURE	Immediate implant placement	Implants are placed in fresh socket
PROCEDURE	Angulated screw-retained crowns placement	To insert the restorations by angulated screw systems
PROCEDURE	Cemented crowns placement	To cement the restorations onto the implant abutment

Timeline

• Start date: 2019-01-17
• Primary completion: 2019-03-20
• Completion: 2020-03-20
• First posted: 2019-11-12
• Last updated: 2021-01-25

Locations

1 site across 1 country: China