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A Mixed-cohorts Study on the Influencing Factors of Torque Decay in Implant Abutment Central Screws

A Mixed-cohorts Study on the Influencing Factors of Torque Decay in Implant Abutment Central Screws

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2400091893
Enrollment
Unknown
Registered
2024-11-05
Start date
2025-01-01
Completion date
Unknown
Last updated
2024-11-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tooth loss

Interventions

The group of patients who have completed implant repair for more than 1 year:None

Sponsors

Hospital of Stomatology, Sun Yat-sen University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. The patient has completed dental implant restoration for over six months. 2. The medical records are complete, and the restoration records are comprehensive. 3. The dental implant crown has a screw hole on the occlusal surface. 4. The patient has good compliance, is well-informed, and consents to participate in this study..

Exclusion criteria

Exclusion criteria: 1. The patient suffers from bruxism; 2. The implant abutment is an ASC abutment or a second-stage abutment; 3. The implant superstructure has a cantilever; 4. The implant axis is significantly deviated from the center of the crown surface, and the screw hole is opened close to the marginal ridge.

Design outcomes

Primary

MeasureTime frame
Central Screw Torque Decay Value;—

Countries

China

Contacts

Public ContactRunheng Liu

Hospital of Stomatology, Sun Yat-sen University

liurh28@mail.sysu.edu.cn+86 134 5022 3576

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026