Assessment of Anterior Teeth Restored With Ultra-translucent Multilayer Zirconia vs Lithium Disilicate Laminate Veneers

Study Overview
=================
Brief Summary
-----------------
The aim of the present study is to assess the clinical performance of multilayered translucent zirconia laminate veneers versus lithium disilicate laminate veneers in terms of modified USPHS criteria for assessment of dental restorations (retention, restoration integrity, color match and marginal adaptation)

Detailed Description
-----------------
inferior mechanical properties of glass ceramics necessities the continuous development and modification for materials suitable for all clinical situations multilayered translucent zirconia provides the advantages of high mechanical properties than all glass ceramic in addition to the improved translucency in the new generations. Therefore, the purpose of the present study is to evaluate the clinical performance of newly introduced multilayered translucent zirconia as a monolithic laminate veneer in comparison with lithium disilicate laminate veneer to determine the clinical functional and structural integrity of the restoration

Official Title
-----------------
Clinical Assessment of Anterior Teeth Restored With Ultra-translucent Multilayer Zirconia Versus Lithium Disilicate Laminate Veneers (Randomized Clinical Trial)

Conditions
-----------------
Retention, Color Match, Marginal Adaptation and Restoration Integrity

Intervention / Treatment
-----------------
* Procedure: Ultra-translucent multilayer zirconia
* Procedure: Lithium disilicate


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: sufficient sound enamel thickness Presence of one adjacent natural teeth that doesn't need laminate to compare shade age range 20 to 40 years old non smokers diastema less than 2mm tooth fracture not exceeding incisal one third normal occlusion vital teeth healthy periodontal tissues Exclusion Criteria: -insufficient enamel thickness restoration more than 40 % of tooth surface parafunctional habits deep discoloration sever teeth rotation edge to edge or deep bite abnormal occlusion bad oral hygiene

Ages Eligible for Study
-----------------
Minimum Age: 20 Years
Maximum Age: 40 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Ultra-translucent multilayer zirconia<br>Ultra-translucent multilayer zirconia laminate veneer treatment | Procedure: Ultra-translucent multilayer zirconia<br>* Ultra-translucent multilayer zirconia laminate veneer treatment<br>|
| Experimental: Lithium disilicate<br>Lithium disilicate laminate veneer treatment | Procedure: Lithium disilicate<br>* Lithium disilicate laminate veneer treatment<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Retention | assessment of restoration will be done for retention on the base of of modified USPHS criteria for assessment of dental restorations | 12 months follow up period | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Restoration integrity | assessment of restoration will be done for restoration integrity on the base of of modified USPHS criteria for assessment of dental restorations | 12 months follow up period |