Performance of Reinforced 3D-Printed Versus Direct Bulk-Filled Resin Composites for Restoring Extensive Class II Cavities in Vital Molars
Starting soon · Not applicable
Conditions studied: Class II Lesions, 3D Printing, Bulk Fill, Proximal Cavities of Posterior Teeth, Composite Restorations
In brief
Most published research on 3D-printed restorative materials is laboratory-based, focusing primarily on mechanical performance and material properties under controlled conditions. While such studies provide important foundational data, they do not fully replicate the complexity of the oral environment. Only a limited number of clinical investigations have directly compared 3D-printed restorations with conventional direct composite restorations in Class II cavities Furthermore, the integration of a digital workflow introduces additional costs and time requirements related to equipment, software, and training. These factors must be justified by demonstrable improvements in clinical outcomes or cost-effectiveness. By evaluating both clinical performance and economic impact, this trial aims to generate practical, real-world evidence that can guide clinicians in selecting appropriate restorative materials and techniques for routine dental practice.
Key facts
- Study ID
- NCT07429747
- Run by
- Ahmed Reda Abd EL Rahman
- People needed
- 50
- Starts
- 2026-02-20
- Expected to finish
- 2027-10-01
- Last updated by the study team
- 2026-03-04
Who can join
Age: 22 and older, up to 45. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Patient-related:
- Adults aged 22 to 45 years.
- Low to moderate caries risk.
- Normal occlusion.
- No signs or symptoms of temporomandibular joint disorders.
- Satisfactory oral hygiene.
- Medically fit to receive routine restorative dental treatment.
- Lesion-related:
- Permanent molar requiring a compound Class II restoration.
- Primary carious lesion classified as ICDAS score 5.
- Presence of an adjacent tooth and a sound opposing tooth in occlusion.
- No clinical signs or symptoms of irreversible pulpitis in the involved, adjacent, or opposing teeth.
- No radiographic evidence of periapical pathology.
You may not qualify if…
- Patient-related:
- Bruxism.
- Poor cooperation.
- Inability or unwillingness to attend follow-up visits.
- Anticipated travel during the study period.
- Poor oral hygiene.
- Chronic or advanced periodontitis.
- Known allergy to any study materials.
- Pregnant or breastfeeding women.
- Lesion-related:
- Teeth with visible fractures or cracks.
- Rampant caries.
- Defective restorations on adjacent or opposing teeth.
- Atypical extrinsic staining that may interfere with evaluation.
- Radiographic signs of apical pathology.
Full record on ClinicalTrials.gov
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