NCT04707716

Implant Supported Single Crowns With Different Retention Modes

Implant Supported Single Crowns With Different Retention Modes - Effects on Peri-implant Tissue: A Prospective Randomized Controlled Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 39 (actual)
• Sponsor: Medical University of Graz · Academic / Other
• Sex: All
• Age: 18 Years – 99 Years
• Healthy volunteers: Accepted

Summary

This study aims to examine the inflammatory response mediated by MMP-8 (Matrix metalloproteinase-8 ) level in peri-implant sulcus fluid adjacent to screw-retained, cemented or using the Acuris-system fixed single implant crowns as well as changing of the marginal bone level within the first year after implant restoration. Furthermore periodontal parameters, patient satisfaction and possible occurring biological or technical complications will be evaluated.

Detailed description

After giving their written consent volunteers will be screened and eligible subjects will be randomized to three different groups. In group 1 Acuris® is used as fixation type; in group 2 screw retention, and in group 3 cementation is used. After 3 months of submerged healing the dental implants will be restored with all ceramic single implant crowns, fixed by using the randomized fixation mode. Follow-up visits till one year after implant restoration will be performed. At least 11 study visits during 16 months will be conducted.

Conditions

• Complications: Inflammatory Reactions, Mechanical Complications

Interventions

Type	Name	Description
OTHER	conometric concept Acuris system	implant crown retention type using friction only
OTHER	screw retention	screw retained implant crown
OTHER	cementation	cement retained implant crown

Timeline

• Start date: 2021-03-04
• Primary completion: 2025-11-13
• Completion: 2025-11-13
• First posted: 2021-01-13
• Last updated: 2026-01-27

Locations

1 site across 1 country: Austria