An In-vivo Survival Rate of Different Onlay Materials Placed Over Endodontically Treated Molar Teeth

Running, not enrolling · Not applicable

Conditions studied: Dental Restoration Failures

In brief

This study aims to evaluate the survival rates of onlays placed over posterior endodontically treated teeth restored with zirconia, lithium disilicate and lithium disilicate reinforced with zirconia. Additionally, it seeks to identify and assess the failure modes associated with these types of restorations.

Key facts

Study ID

NCT07753941

Run by

Yousef Mahmoud Salem

People needed

39

Starts

2025-09-01

Expected to finish

2027-06-01

Last updated by the study team

2026-08-10

Who can join

Age: 17 and older, up to 60. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients must have good general health.
• Patients must be 17 to 60 years old.
• Exclusively permanent molar teeth (first or second molars) needing restoration after endodontic therapy.
• The tooth needs adequate residual structure to support an Onlay repair, with minimum of 50% of the coronal structure maintained.
• Absence of Active Caries: The tooth and surrounding teeth ought to be free of illnesses or other agents compromising the restoration.
• Endodontic Status: Radiographic evidence of adequate obturation and the lack of periapical pathology justify the excellent root canal treatment the tooth underwent.
• The tooth and surrounding tissues must show periodontal stability free of evidence of active periodontal disease (probing depth < 4 mm, lack of movement, and no bleeding following probing).
• The tooth must be in functional occlusion or have a specified occlusal contact with the opposite dentition.
• Patients must have good dental hygiene (plaque index than 20% and gingival index less than 1).
• Participants must show that they are ready to follow the study plan, which calls for maintaining oral hygiene standards and showing attendance to follow-up visits.
• Patients must provide written informed consent to be part in the study.

You may not qualify if…

• The tooth had past treatment with a crown or onlay.
• Patients have any known allergies to the components utilized in the Onlay restoration-that is, composite resin, ceramic, or adhesive compounds.
• Pregnant female participants
• Patients have active periodontal disease
• Teeth with vital pulp therapy

Where it is running

• Dental Teaching Clinics at Jordan University of Science and Technology — Irbid, Jordan

Full record on ClinicalTrials.gov

Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.