Zirconia Versus Lithium Di-silicate Overlays for Restoring Hypomineralized Molars Affected With MIH

Study Overview
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Brief Summary
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the study evaluate the clinical outcome of zirconia versus lithium disilicate overlays restorations for restoring vital young permanent first molar teeth affected with moderate form of molar Incisor hypomineralization: randomized clinical trial.

Detailed Description
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To compare the one-year clinical outcome of zirconia versus lithium disilicate overlays restorations. Materials and methods: Twenty patients were distributed into two groups in relation to the material used for the fabrication of overlays restorations; group (Z) (n=10): patients received zirconia restorations, group (EC): patients received IPS E.max Cad restorations. Clinical and radiographic evaluations of these restorations were carried out at base line (1 week), 3, 6 and 12 months after cementation using FDI World Dental Federation criteria

Official Title
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Clinical Outcome of Zirconia Versus Lithium Di-silicate Overlays Restorations for Restoring Vital Young Permanent First Molar Teeth Affected With Moderate Form of Molar Incisor Hypomineralization: Randomized Clinical Trial

Conditions
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Molar Incisor Hypomineralization

Intervention / Treatment
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* Procedure: overlay


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Children's age ranging from 10 to 15 years old. Existence of large carious lesion in young permanent first molar teeth associated with weak cusps. Signs of vital pulp without symptoms of pulpitis. Presence of antagonists and adjacent teeth and occlusal contacts with good level of oral hygiene. Children should be able to physically and psychologically tolerate conventional restorative procedures. Exclusion Criteria: Children with poor oral hygiene and symptoms of pulpitis. Children suffer from parafunctional habits. Children with any debilitating systemic disorder.

Ages Eligible for Study
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Minimum Age: 7 Years
Maximum Age: 12 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

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
Interventional Model Description: Randomized Clinical Trial
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Group (Z)<br>patients received zirconia restorations group | Procedure: overlay<br>* Lithium Disilicate partial coverage of hypo-mineralized defected enamel<br>* Other names: Zirconia partial coverage of hypo-mineralized defected enamel;|
| Experimental: Group (EC)<br>patients received IPS E.max Cad restorations group | Procedure: overlay<br>* Lithium Disilicate partial coverage of hypo-mineralized defected enamel<br>* Other names: Zirconia partial coverage of hypo-mineralized defected enamel;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Clinical Outcome | compare the one-year clinical outcome of zirconia versus lithium disilicate overlays restoration of vital young permanent first molar teeth affected with moderate form of Molar Incisor Hypomineralization | one year | 
| Restoration Evaluation | Restorations were assessed clinically using dental explorer, mirror and radiographically according to FDI World Dental Federation criteria over one-year period at (base line 1 week, 3, 6 and 12 months) afterward cementation. There were three assessment categories (esthetics, function, biological) each with five subcategories. From best to worst, the subcategories were: (1) clinically excellent, (2) clinically good, (3) clinically sufficient, (4) clinically not sufficient but repairable and (5) clinically unacceptable. Assessment with category (5) was rated as a clinical failure. Statistical analysis for baseline and follow-up criteria was performed with Wilcoxon-Test (p<0.05) (SPSS; IBM,Chicago, IL). | one year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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MIH - zironia - Lithium Disilicate - Overlays