Evaluation of Antagonist Wear Behavior and Patient Satisfaction of Zirconia Reinforced Lithium Silicate Glass When Compared to Monolithic Zirconia

Study Overview
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Brief Summary
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evaluation of wear behavior and patient satisfaction of monolithic zirconia and zirconia reinforced glass crowns after follow-up periods 0,3,6,12 months.

Detailed Description
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two groups of patients will be selected according to special inclusion criteria n=13 in each group total of 26. each group will receive one of the crowns used in this study either ( monolithic zirconia or zirconia reinforced lithium silicate glass) after crown delivery wear and patient satisfaction will be recorded at 0,3,6,12 moths follow-up periods.

Official Title
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Evaluation of Antagonist Wear Behavior and Patient Satisfaction of Monolithic Zirconia Versus Lithium Silicate Zirconia Crowns

Conditions
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Wear of the Natural Enamel

Intervention / Treatment
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* Other: zirconia reinforced lithium silicate glass ceramic


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient age range from 20-60 to be able to read and write in order to sign the informed consent document. Patients physically and psychologically able to tolerate conventional restorative procedures. Patients with no active periodontal and or pulpal diseases, having teeth with good restorations. Patients with root canal treated teeth requiring full coverage restorations. Patients indicated for full coverage (e.g. moderate to severe discoloration, coronal fracture, malposed or malformed teeth). Patients willing to return for follow-up examinations and assessments Exclusion Criteria: Patients in the growth stage with partially erupted teeth. Patient with poor oral hygiene. Patients with psychiatric problems or unrealistic expectations Patient with no opposite occluding dentition in the area intended for restoration. Patient suffering from Para functional habits.

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 60 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: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: zirconia reinforced lithium silicate glass ceramic<br>It represent a new generation of glass ceramic material, enriched with zirconia (10% by weight), the material offers natural esthetics with successful outcome. | Other: zirconia reinforced lithium silicate glass ceramic<br>* It represent a new generation of glass ceramic material. Using an innovative manufacturing process the glass ceramic is enriched with zirconia (10% by weight) for dental CAD/CAM applications for the fabrication of inlays, onlays, crowns and anterior and posterior single tooth restorations on implant abutments.<br>|
| Active Comparator: monolithic zirconia<br>Zirconia or zirconium dioxide (ZrO2) is a highly attractive ceramic material in prosthodontics due to its excellent mechanical properties. It is widely used to build prosthetic devices. | Other: zirconia reinforced lithium silicate glass ceramic<br>* It represent a new generation of glass ceramic material. Using an innovative manufacturing process the glass ceramic is enriched with zirconia (10% by weight) for dental CAD/CAM applications for the fabrication of inlays, onlays, crowns and anterior and posterior single tooth restorations on implant abutments.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| wear of the antagonist natural enamel | loss of opposing tooth structure which will be measured by 3D Profilometer | from baseline till one year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| patient satisfaction | visual analogue scale (VAS): scale range from 0-10 for describing the intensity of pain the patient suffering. 0: no pain, 5: moderate pain, 10: unbearable pain. | from baseline till one year |