3D-printed resin versus zirconia for implant crowns and short bridges in the lower front jaw

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a randomized, parallel-arm clinical trial comparing 3D-printed permanent resin (CROWNTEC) restorations to conventionally milled monolithic zirconia for implant-supported single crowns and short-span fixed partial dentures in the mandibular anterior region. All prostheses are produced using a standardized fully digital workflow (intraoral scanning, CAD design, and controlled fabrication) and delivered as screw- or cement-retained restorations. Participants are followed at baseline, 3, 6, and 12 months with planned extended follow-up, and the primary outcome is restoration survival over 12 months. Secondary outcomes include technical complications (fracture, chipping, screw loosening), peri-implant biological measures, marginal bone level changes on radiographs, and patient-reported satisfaction.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Participants must meet all of the following:
* Age ≥18 years.
* Have one or two osseointegrated dental implants requiring prosthetic restoration.
* Demonstrate stable peri-implant tissues with no signs of inflammation or implant mobility.
* Maintain good oral hygiene and controlled periodontal status.
* Require either:
* A single implant-supported crown, or
* A short-span (maximum 3-unit) implant-supported fixed partial denture (FPD) supported by two implants in the mandibular anterior region.

Exclusion Criteria:

* Participants are excluded if they have any of the following:
* Severe parafunctional habits (e.g., bruxism).
* Uncontrolled systemic diseases affecting bone metabolism or healing.
* Peri-implantitis or compromised implant stability.
* Requirement for cantilever prostheses or long-span restorations, or FPDs in areas other than the mandibular anterior region.

Where it's running

• Mohammed Elsawy
  Shibīn al Kawm, Egypt Recruiting

Study contacts

• Study coordinator: Mohammed A. Elsawy, PhD
• Email: mohamed.elsawy@dent.menofia.edu.eg
• Phone: 00201061314522

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.