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OT-Bridge System Versus Multiunit Abutment for Mandibular All On-4 Screw Retained Prostheses.

Patient Satisfaction and Prosthetic Complication of OT-Bridge System Versus Multiunit Abutment for Mandibular All On-4 Screw Retained Prostheses.

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07701200
Enrollment
20
Registered
2026-07-14
Start date
2023-12-13
Completion date
2025-07-10
Last updated
2026-07-14

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

Conditions

All-on-4, Complete Edentulism, Implant Supported Prosthesis, Multiunnit Abutments, OT- Bridge

Brief summary

This study aims to compare two different prosthetic systems used in mandibular full-arch implant-supported fixed prostheses (All-on-4). The study evaluates patient satisfaction and prosthetic complications associated with the OT-Bridge system versus multiunit abutments. A total of 20 patients will be included and divided into two equal groups. All patients will receive implant-supported screw-retained fixed prostheses. Clinical and prosthetic outcomes will be assessed at baseline (T0), 6 months (T6), and 12 months (T12), including evaluation of patient satisfaction and any prosthetic complications. The findings of this study may help improve the selection of prosthetic systems to enhance clinical outcomes and patient quality of life.

Interventions

DEVICEOT-Bridge

OT-Bridge system is a prosthetic attachment system used for implant-supported fixed full-arch prostheses. It is designed to connect implants and provide a screw-retained restoration for mandibular All-on-4 cases, allowing improved prosthetic stability and passive fit.

DEVICEMultiunit

Multiunit abutments are prosthetic components used in implant-supported full-arch fixed prostheses. They are placed on dental implants to correct angulation and provide a stable platform for screw-retained mandibular All-on-4 restorations.

Sponsors

Mansoura University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Adult patients (≥18 years) with edentulous mandible. * Patients receiving or having received All-on-4 dental implants in the mandible. * Adequate implant stability to support prosthetic loading. * Patients indicated for screw-retained full-arch fixed prostheses using either OT-Bridge system or multiunit abutments. * Patients willing to participate and attend follow-up visits at T0, T6, and T12 months.

Exclusion criteria

* Patients with uncontrolled systemic conditions affecting healing (e.g., uncontrolled diabetes). * Patients with failed or mobile implants. * Severe parafunctional habits (e.g., uncontrolled bruxism). * Poor oral hygiene compliance. * Patients unable to attend follow-up visits

Design outcomes

Primary

MeasureTime frameDescription
Patient SatisfactionBaseline, 6 months, 12 monthsPatient satisfaction will be assessed using a structured questionnaire for patients receiving mandibular All-on-4 implant-supported fixed prostheses. Satisfaction will be evaluated at baseline (T0), 6 months (T6), and 12 months (T12) after prosthesis delivery, comparing OT-Bridge system and multiunit abutments.
Prosthetic ComplicationsBaseline, 6 months, 12 monthsProsthetic complications will be recorded for both groups, including screw loosening, prosthesis fracture, loss of retention, and need for maintenance or adjustment. Evaluations will be performed at T0, T6, and T12 months in mandibular All-on-4 implant-supported prostheses.

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 15, 2026