NCT07323628

PEEK vs Metal Bar Attachments

Completed NA Last updated 9 January 2026

What this trial tests

NA trial testing PEEK Bar Attachment in Edentulism in Lower Jaw in 20 participants. Completed in 10 November 2025.

Timeline

5 May 2024

Primary endpoint
10 October 2025

10 November 2025

Quick facts

Lead sponsor	Sherif Aly Sadek
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	single
Primary purpose	treatment
Enrollment	20
Start date	5 May 2024
Primary completion	10 October 2025
Estimated completion	10 November 2025
Sites	1 location across Egypt

Drugs / interventions tested

• PEEK Bar Attachment
• Metal Bar Attachment

Conditions studied

• Edentulism in Lower Jaw — all drugs for Edentulism in Lower Jaw →

Sponsor

Sherif Aly Sadek

Who can join

Adults 40 to 70, any sex, with Edentulism in Lower Jaw. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

This study is being conducted to compare two types of bar attachments used to support lower dentures in patients who have lost all their lower teeth. Many people who wear a single lower denture experience problems with stability, chewing, and comfort. Placing two implants in the lower jaw and attaching the denture to a bar can greatly improve how well the denture stays in place.

Traditionally, these bars have been made from metal. While effective, metal bars can place higher stress on the bone around the implants, which may lead to more bone loss over time. A newer material, PEEK (polyetheretherketone), is lighter and has flexibility closer to natural bone. This may reduce stress on the implants and help protect the surrounding bone.

In this randomized clinical trial, patients are assigned to receive either a PEEK bar or a metal bar to retain their lower denture. All participants receive two implants placed in the canine region of the lower jaw, followed by a bar-retained overdenture after healing.

The study follows patients for 12 months and measures:

Marginal bone loss: how much bone is lost around each implant, assessed through radiographs.

Patient satisfaction: how comfortable and functional the denture feels, including stability, chewing, speech, hygiene, and overall handling.

Early results show that both types of bars support the denture well, but implants connected to PEEK bars tend to show less bone loss after several months compared to those connected to metal bars. Patient satisfaction is high in both groups, with slightly higher scores reported by patients using PEEK bars, although not significantly different.

This study may help dentists choose the best bar material to improve long-term implant health and denture comfort.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.