NCT06871020

Periodontal Health and Patient Satisfaction of CAD/CAM Fiber-Reinforced vs. PFM Attachments in Distal Extension RPDs

Evaluation of Periodontal Health and Patient Satisfaction of CAD/CAM Fiber-Reinforced Composite Versus Porcelain Fused to Metal Extracoronal Attachment in Mandibular Distal Extension Removable Partial Dentures: A Randomized Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 12 (actual)
• Sponsor: Ain Shams University · Academic / Other
• Sex: All
• Age: 20 Years
• Healthy volunteers: Accepted

Summary

This randomized clinical trial aims to assess periodontal health and patient satisfaction in mandibular distal extension removable partial dentures using CAD/CAM fiber-reinforced composite versus porcelain-fused-to-metal extracoronal attachments. Twelve participants with bilateral mandibular Kennedy Class I, retaining only the first premolars as the last standing abutments, will be randomly assigned to two groups. Group I will receive OT extracoronal attachments made from CAD/CAM fiber-reinforced composite, while Group II will receive OT extracoronal attachments made from porcelain-fused-to-metal. All participants will then receive a metallic removable partial denture. The null hypothesis states that no significant differences will be observed in periodontal health and patient satisfaction between the two attachment types.

Detailed description

Twelve participants with bilateral maxillary Kennedy Class I, with the first premolars as the last standing abutments, will be recruited based on strict inclusion criteria from the oral and maxillofacial prosthodontic outpatient clinic. The canines and first premolars will be prepared to receive OT extracoronal attachments made from either CAD/CAM fiber-reinforced composite (Group I) or porcelain-fused-to-metal (Group II), according to group allocation. All participants will then receive a metallic removable partial denture. Periodontal health will be assessed through bleeding index, probing depth, and gingival recession at denture insertion and after six months. Patient satisfaction will also be evaluated at the six-month follow-up.

Conditions

• Mandibular Distal-extension Prostheses

Interventions

Type	Name	Description
OTHER	Mandibular removable partial denture retained on OT extracoronal attachment made from fiber-reinforced composite resin	Bilateral OT extracoronal attachments will be milled from fiber-reinforced composite resin after obtaining impressions of the prepared abutments. This will be followed by an overall impression of fabricating a Co-Cr removable partial denture to be retained in the attachments.
OTHER	Mandibular removable partial denture retained on OT extracoronal attachment made from porcelain-fused to metal	Bilateral OT attachments manufactured from porcelain fused to metal by conventional technique after obtaining impressions of the prepared abutments. This will be followed by an overall impression of fabricating a Co-Cr removable partial denture to be retained in the attachments.

Timeline

• Start date: 2025-01-01
• Primary completion: 2025-09-01
• Completion: 2025-09-15
• First posted: 2025-03-11
• Last updated: 2025-09-22

Locations

1 site across 1 country: Egypt