Success of Zirconia and Stainless Steel Crowns for Permanent Molars

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

Detailed Description
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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.

Official Title
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Clinical and Radiographic Performance of Preformed Zirconia Crowns and Stainless-Steel Crowns in Permanent First Molars: 18-Month Results of a Prospective, Randomized Trial

Conditions
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Caries Active, Dentin, Carious

Intervention / Treatment
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* Device: zirconia crowns
* Device: stainless steel crowns


Participation Criteria
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Eligibility Criteria
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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: 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

Ages Eligible for Study
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Minimum Age: 6 Years
Maximum Age: 13 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: zirconia crowns<br>esthetic crowns for capping permanent molars with caries | Device: zirconia crowns<br>* esthetic crowns for capping permanent molars with caries<br>|
| Experimental: stainless steel crowns<br>stainless steel crowns for capping permanent molars with caries | Device: stainless steel crowns<br>* stainless steel crowns for capping permanent molars with caries<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 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 | 2 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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zirconia crowns, stainless steel crowns, dental caries