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CompletedNCT05049694Updated Apr 7, 2023

Success of Zirconia and Stainless Steel Crowns for Permanent Molars

An interventional study of zirconia crowns and stainless steel crowns in Caries Active and Dentin, Carious, sponsored by Hacettepe University. Completed at 1 site in Turkey. Open to participants aged 6 Years to 13 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-04-07.

Sponsored by Hacettepe University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 1 month after the study started (first participant enrolled Aug 2019, registered Sep 2021).
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
6 Years to 13 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate and compare the clinical and radiographic performance of zirconia and stainless steel crowns on permanent molar

Read the detailed description

Zirconia and stainless steel crowns will be placed on at least two permanent molars, in a split mouth design. 100 patients will be included in the study. The teeth will be randomized into two groups according to the crown type.

Group 1: Zirconia crown 2: Stainless steel crown. Plaque index, gingival index, crown retention, presence of restoration failure, gingival margin extension and pulpal health of the teeth will be clinically evaluated at baseline and 1., 6., 12., 18., 24. months. The restorations will be evaluated radiographically at 6., 12. and 18. months. Intra-oral photos will be taken directly after treatment and at control appointments.

The data will be analysed statistically using Fisher's Exact Test and pearson's chi-square test; and Log-rank and the Kaplan-Meier will be used to estimate survival percentages.

02

Conditions studied

  • Caries Active
  • Dentin, Carious

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Keywords

  • zirconia crowns
  • stainless steel crowns
  • dental caries
03

In context

Dental Caries

1,109 studies on the registry are indexed under Dental Caries; 197 are open to participants now.

This study's enrollment of 20 is below the median of 60 across 916 interventional studies indexed under Dental Caries.

Browse Dental Caries studies →

Lead sponsor

Hacettepe University is the lead sponsor of 983 studies on the registry; 212 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Years to 13 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Patients and parent of the patients who accept to participate and sign the informed consent
  • Patients who have at least two permanent molars with caries that require crown restoration
  • Patients that have good cooperation to the procedure

Exclusion criteria

Exclusion Criteria:

  • Patients and parent of the patients who don't accept to participate and sign the informed consent
  • Teeth that doesn't have opposing permanent molars
  • Patients who have bruxism or deep-bite
  • Patient who are allergic to nickel
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    zirconia crowns

    esthetic crowns for capping permanent molars with caries

    Device: zirconia crowns

  • Experimental
    stainless steel crowns

    stainless steel crowns for capping permanent molars with caries

    Device: stainless steel crowns

Interventions

  • Devicezirconia crowns

    esthetic crowns for capping permanent molars with caries

  • Devicestainless steel crowns

    stainless steel crowns for capping permanent molars with caries

06

What researchers measure

Primary outcomes

  1. Number of zirconia and stainless steel crowns that showed successful retention over two years

    Long-term clinical success of zirconia and stainless steel crowns placed on permanent molars

    Time frame: 2 years

07

Study locations

1 site
  • Hacettepe University
    Ankara, 06100, Turkey
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 7, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05049694
Lead sponsor
Hacettepe University
Responsible party
Zafer Cavit Cehreli, DDS, PhD (Prof.Dr., Hacettepe University) — Principal investigator
First posted
Sep 20, 2021
Start date
Aug 1, 2019
Primary completion
Jan 1, 2022
Completion
Aug 1, 2022
Last update
Apr 7, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2023. You cannot join it, but the record below documents what was studied.

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