Onlays made from different 3D‑printable resins for root‑canal treated molars

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

The trial compares onlays fabricated by additive manufacturing (3D printing) using three different dental resins: Saremco print resin, Varseosmile Crownplus, and Varseosmile TriniQ. Eligible molars are those previously treated with root canal therapy that have certain occlusal and proximal defects above the gum line and adjacent/opposing teeth present. Onlays will be designed from digital scans and produced layer-by-layer, then placed as indirect restorations and followed clinically for performance. The study contrasts this approach with the context of traditional subtractive milling by focusing on fit, durability, and clinical success of the printed resin onlays.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Molar teeth that have undergone root canal treatment
* Teeth with proximal defects located above the gingival margin
* Defects limited to the occlusal surface and a single adjacent surface
* Presence of an occlusal defect extending over one-third of the distance between the fissure and the cusp tip and involving one or more cusps
* Presence of an opposing tooth or a fixed prosthetic restoration against the tooth to be restored
* Presence of adjacent teeth next to the tooth to be restored

Exclusion Criteria:

* Fractured or cracked teeth
* Patients with temporomandibular joint disorders
* Patients with bruxism (teeth grinding)
* Molar teeth without an opposing tooth or fixed prosthetic restoration
* Molar teeth without adjacent teeth
* Vital teeth
* Patients with a history of allergy to the components of the resins

Where it's running

• Mersin University Faculty of Dentistry
  Mersin, Mersin, Turkey (Türkiye) Recruiting
• Mersin University
  Mersin, Mersin, Turkey (Türkiye) Not yet recruiting

Study contacts

• Study coordinator: Esra Cengiz Yanardag, DDS, PhD
• Email: esracengiz@mersin.edu.tr
• Phone: +905052443472

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Other studies for the same condition or treatment. Recruiting studies are listed first.

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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.