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

Mansoura University20 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Complete Edentulism All-on-4 Implant Supported Prosthesis Multiunnit Abutments

Interventions

OT-BridgeDEVICE

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.

MultiunitDEVICE

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.

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Patient Satisfaction

Patient 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.

Time frame: Baseline, 6 months, 12 months

Prosthetic Complications

Prosthetic 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.