Evaluation of Clinical Wear and Surface Roughness of Partial Restorations Produced by Additive and Subtractive Manufacturing Methods: A Split-Mouth Randomized Controlled Clinical Trial

Launched by HUSNA SELINAY · Jul 4, 2025

Keywords

ClinConnect Summary

This clinical trial is studying how well two different methods of making dental crowns—3D printing and a technology called CAD-CAM—hold up over time. The researchers want to see which type of crown stays smoother and wears down less after being used for a year. Crowns are caps placed on damaged teeth, and it’s important that they don’t wear out quickly or cause damage to the natural teeth they bite against. This study will help dentists understand which method might be better for making durable and comfortable crowns.

Adults between 18 and 50 years old who need a crown on their first molar (a large back tooth) and are generally healthy may be eligible to join. To participate, the tooth must have some damage to its cusps (the pointed parts on the chewing surface) but should not have ongoing infections or symptoms like pain. During the study, participants will receive a crown made either by 3D printing or CAD-CAM technology, and the team will check the crown’s surface and wear over a 12-month period using special measuring devices. This research is still preparing to start enrolling participants.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Teeth with Devital and Vital Cusp Loss
• Exclusion Criteria:
• • Root Canal Treated Teeth with Lesions
• • Symptomatic Vital Teeth