Effect of the Abutment-Prosthesis Connection on Marginal Bone Loss and Gingival Sealing Around Dental Implants

Not Applicable

Active, not recruiting

• Conditions: Jaw, Edentulous, Partially
• Interventions: Device: Multi-unit; Device: Connect®

• Registration Number: NCT05883202
• Lead Sponsor: Universidad de Granada

Brief Summary

In dental implant restoration, available literature demonstrates the advantage of using tall abutments, with a change of diameter with respect to the implant and a conical internal connection in the abutment-implant gap. However, for multiple restorations, the abutment-prosthesis connection has not been studied in detail. The "multi-unit" systems, both standard and brand specific, have either a flat or butt joint or an cone. In any case, both are external connection systems. Recently, an internal-type abutment-prosthesis connection system has been developed. Although it is proving its usefulness in single restorations, its use in multiple restorations compared to traditional systems has not been studied.

Therefore, taking into account all of the above, the present study has the overall objective of analyzing marginal bone loss (MBL) and adaptation of soft tissues by comparing a multiple prosthesis system of the "external, flat" type versus an external system of the "internal, conical" type.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2023-05-20
• Study First Submitted QC: 2023-05-20
• Study First Posted: 2023-05-31
• Study Start: 2023-07-10
• Status Verified: 2024-12
• Last Update Submitted: 2024-12-03
• Last Update Posted: 2024-12-05
• Primary Completion: 2026-05
• Study Completion: 2026-07

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Multi-unit	Multi-unit	Restoration of multiple implants with a conventional multi-unit abutment between the implant and the prosthesis.
Connect®	Connect®	Restoration of multiple implants with a Connect® abutment between the implant and the prosthesis.

Primary Outcome Measures

Name	Time	Method
Marginal bone level	1 year	Peri-implant marginal bone level measured by standardized periapical radiography

Secondary Outcome Measures

Name	Time	Method
Peri-implant microbiome	1 year	Relative abundance of microbial species in the peri-implant sulcus evaluated by next-generation sequencing methods
Peri-implant inflammation	1 year	Concentration of pro-inflammatory markers in the peri-implant sulcus evaluated by multiplex techniques methods

Trial Locations

Locations (1)

Universidad de Granada; 🇪🇸 Granada, Spain