Surface Wear of PEEK Clasp Against Zirconia Full-Coverage Restored Abutments in Distal Extension Removable Partial Dentures

Clinical Evaluation of Surface Wear of PEEK Clasps Against Zirconia Full-Coverage Restored Abutments in Distal Extension Removable Partial Dentures

Status

Completed

Phases

Unknown

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT07708558

Acronym

PEEKWear

Enrollment

Registered

2026-07-16

Start date

2024-03-01

Completion date

2025-03-01

Last updated

2026-07-16

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

Conditions

Partial Edentulism, Partial Edentulism Class 1

Brief summary

This prospective clinical comparative study will evaluate the surface wear of BioHPP (modified polyetheretherketone) clasps opposing either natural tooth abutments or zirconia full-coverage abutments in mandibular bilateral distal extension removable partial dentures. Ten participants will be randomly assigned to two equal groups. Surface topography changes of the clasp fitting surfaces will be assessed using scanning electron microscopy (SEM) at denture insertion, 6 months, and 12 months. The findings will help determine the influence of abutment material on the wear behavior of BioHPP clasps and provide evidence for selecting appropriate abutment materials in removable partial denture treatment.

Interventions

DEVICEPEEK Removable Partial Denture Framework with Natural Tooth Abutments

BioHPP Removable Partial Denture Framework with Natural Tooth Abutments

DEVICEPEEK Removable Partial Denture Framework with Zirconia Abutments

BioHPP Removable Partial Denture Framework with Zirconia Abutments

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

BASIC_SCIENCE

Masking

DOUBLE (Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

40 Years to 50 Years

Healthy volunteers

Inclusion criteria

Adults aged 40-50 years. Mandibular Kennedy Class I partial edentulism. Bilateral distal extension edentulous areas. Presence of healthy canines and first premolars suitable as abutment teeth. Adequate oral hygiene and healthy periodontal condition. Adequate interarch space for removable partial denture fabrication. Ability and willingness to attend all scheduled follow-up visits and provide written informed consent.

Exclusion criteria

Systemic diseases or medications that could affect bone or soft tissue healing. Active periodontal disease or poor oral hygiene. Severe parafunctional habits (e.g., bruxism or clenching). Smoking. Pregnancy or lactation. Allergy or hypersensitivity to any study materials. Inability to comply with study procedures or follow-up visits.

Design outcomes

Primary

Measure	Time frame	Description
Surface topography changes of BioHPP clasp fitting surfaces	Baseline (denture insertion), 6 months, and 12 months	Surface wear of BioHPP clasp fitting surfaces assessed by scanning electron microscopy (SEM) and digital morphometric analysis

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 17, 2026