Custom-made Zirconia Crowns Versus Prefabricated Zirconia Crowns in Young Permanent Molars

Enrolling by invitation · Not applicable

Conditions studied: Zirconia Crowns

In brief

This study aims to compare the clinical performance of Prefabricated Zirconia Crowns (PZCs) with that of Custom-made Zirconia Crowns (CZCs) using enhanced clinical protocols.

Key facts

Study ID: NCT07704151
Run by: Jordan University of Science and Technology
People needed: 50
Starts: 2025-08-01
Expected to finish: 2027-12-31
Last updated by the study team: 2026-07-15

Who can join

Age: 7 and older, up to 13. Sex: any. Healthy volunteers: accepted.

You may qualify if…

Medically fit or with mild systemic illness (ASA I or II).
Children who assent to take part in the study with a valid parental consent
Children who have at least one first permanent molar requiring a full-coverage restoration (indications for placing a crown include: badly destructed/carious molars, or teeth affected by molar-incisor hypomineralisation (MIH))
Maxillary or mandibular fully erupted first permanent molars, regardless of the stage of root development.
A cooperative child that accepts dental treatment (Frankle Behaviour Rating Scale #3 or 4).
Capable of attending all follow-up sessions.

You may not qualify if…

Patients outside the required age range
Parents/child not willing to participate.
Medically compromised patients
Partially erupted permanent first molars.
Patients with severe malocclusion that prohibits the provision of crowns
First permanent molars are not indicated for full coverage restorations.
First permanent molars are indicated for extraction.
Patients with bruxism or parafunctional habits.
Uncooperative children (Frankle Behaviour Rating Scale #1 or 2)

Where it is running

Jordan University of Science and Technology — Irbid, Jordan

Full record on ClinicalTrials.gov

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