Four Locator Attachment Mandibular Overdentures

Recruiting

• Conditions: Bone Resorption
• Interventions: Other: observation

• Registration Number: NCT05910333
• Lead Sponsor: Mohamed Elsawy

Brief Summary

. There is little information on the degree of crestal bone loss around 4 inter-foraminal implant-retained mandibular overdentures (OVDs) and the amount of bone remodelling on the anterior maxilla and posterior mandibule on long-term function, particularly with different distributions.

Detailed Description

Numerous studies confirm the successful use of implants to retain prostheses in the edentulous atrophic mandible. It has been recommended by some authors that clinicians should use 3 or 4 implants in situations that require increased retention, such as high muscle attachment or prominent mylohyoid ridge. LOCATOR attachment as a retentive component has several advantages over other systems, Such as: dual retention through both external and internal mating surfaces, a self-aligning feature which is helpful in guiding patients when placing their denture. There is little information on the degree of crestal bone loss around 4 inter-foraminal implant-retained mandibular overdentures (OVDs) and the amount of bone remodelling on the anterior maxilla and posterior mandibule on long-term function, particularly with different distributions.

Study Timeline

• Study Start: 2023-03-28
• Study First Submitted: 2023-06-09
• Study First Submitted QC: 2023-06-09
• Study First Posted: 2023-06-18
• Status Verified: 2023-10
• Last Update Submitted: 2023-10-19
• Primary Completion: 2023-10-21
• Last Update Posted: 2023-10-23
• Study Completion: 2023-10-27

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• Patients with 4 implants in the inter-foraminal region.
• Patients treated by staff and students in the Master's program in Prosthodontics Department according to the following criteria:
• Edentulous maxilla and mandible for at least 1 year.
• Problems with retention and stability of the mandibular denture.
• Mandibular bone height between 15 and 25 mm.

Exclusion Criteria

• Patients with relative contraindications, such as
• A history of para functional habits.
• Smokers more than 10 cigarettes per day.
• alcoholism.
• Patients with a history of radiation therapy in the head and neck region . • Patients within intravenous administrated bisphosphonates., chemotherapy, and mental disorders that could jeopardies their co-operation.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Quadrilateral distribution group	observation	Patients with quadrilateral distribution of implants
Linear distribution group	observation	Patients with lineardistribution of implants

Primary Outcome Measures

Name	Time	Method
Posterior mandibular ridge resorption (PMandRR)	10 years retrospective study	The amount of PMandRR will be assessed using posterior area index on a panoramic x-ray which use specific landmarkds.

Secondary Outcome Measures

Name	Time	Method
Anterior maxillary ridge resorption (AMaxRR)	10 years	The amount of PMandRR will be assessed using anterior area index on a panoramic x-ray, which use specific landmarks.

Trial Locations

Locations (1)

Mohammed El Sawy; 🇪🇬 Multiple Locations, Egypt