Clinical Evaluation of Wear Behavior of Human Enamel and Chipping of Veneered Zirconia Against Monolithic Zirconia
|ClinicalTrials.gov Identifier: NCT03295513|
Recruitment Status : Unknown
Verified September 2017 by Nouran Mahmoud Ibrahim Metwally, Cairo University.
Recruitment status was: Not yet recruiting
First Posted : September 28, 2017
Last Update Posted : September 28, 2017
|Condition or disease||Intervention/treatment||Phase|
|Broken Tooth With Complication Non Vital Teeth Mutilated Teeth||Other: Veneered zirconia Other: Monolithic zirconia||Not Applicable|
While increase using of zirconia in extra coronal restoration as a substitute for metal ceramic restoration still high rate of technical complications specifically chipping of veneering ceramic and wear of antagonist are usually associated with veneered zirconia restoration which led to development of new monolithic zirconia to overcome these technical complications.
Therefore this study will be conducted to evaluate chipping and wear of antagonist of veneered zirconia versus monolithic zirconia all ceramic crowns in posterior area.
Benefits of the research to the patient:
Patient will receive a restoration with superior function, esthetics, and quality.
It will save teeth such as mutilated teeth, endodontically treated and teeth with massive loss of tooth structure that cannot be restored with direct restoration.
As a result of properly functioning restoration, teeth will be restored with predictable prognosis and the patient will be psychologically improved.
Benefits of the research to the clinician:
Practitioner will have the advantage to clinically assess a new material that can be used in different situations for better function and esthetic outcomes.
It will improve patient confidence with the dentist.
Explanation for choice of comparators:
The use of veneered zirconia is well documented in the literatures as successful restoration modality. A two Clinical performance of two different CAD/CAM-fabricated ceramic crowns revealed no chipping for veneered zirconia.
A 3 years Randomized Controlled Clinical Trial of Zirconia-Ceramic and Metal-Ceramic Posterior Fixed Dental Prostheses reported Alpha Scores A=66.6%, B =25% , C=5.6% and Only D= 2.8 A 5 years prospective clinical study of posterior zirconia fixed dental prosthesis reported Alpha scores greater than 95% indicating no predictable changes during the 5 years Another 3 years Randomized controlled clinical Trial of Posterior veneered zirconia for fixed dental prostheses revealed 20% chipping and also 30% reported alpha for antagonist wear and 70% reported bravo after 3 years of clinical use.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||26 participants|
|Intervention Model:||Parallel Assignment|
|Intervention Model Description:||Patient will receive a restoration with superior function, esthetics, and quality.|
|Masking:||Double (Participant, Outcomes Assessor)|
|Primary Purpose:||Supportive Care|
|Official Title:||Clinical Evaluation of Wear Behavior of Human Enamel and Chipping of Veneered Zirconia Against Monolithic Zirconia (Randomized Controlled Clinical Trial)|
|Estimated Study Start Date :||November 1, 2017|
|Estimated Primary Completion Date :||December 1, 2018|
|Estimated Study Completion Date :||February 1, 2019|
Active Comparator: veneered zirconia full coverage restorations
InCoris zirconia material (TZI-Densupply sirona)
Other: Veneered zirconia
he use of veneered zirconia is well documented in the literatures as successful restoration modality. A two Clinical performance of two different CAD/CAM-fabricated ceramic crowns revealed no chipping for veneered zirconia
Experimental: Monolithic zirconia full coverage restorations
InCoris (TZI-Densupply sirona)
Other: Monolithic zirconia
Monolithic zirconia product presented a new generation of polycrystalline material by which full anatomical crowns and bridges can be produced
- Chipping [ Time Frame: 12 month ]chipping of the restoration by modified USPHs criteria as Alpha (Excellent) ideal,Bravo (Acceptable) less than ideal but no modifications required, Charlie (Acceptable but modifications needed) staining or other shade modifications required, and Delta (Unacceptable) remake.
- tooth wear [ Time Frame: 12 month ]Measuring the effect on natural tooth by modified USPHs criteria as Alpha(Excellent) ideal,Bravo (Acceptable) less than ideal but no modifications requiredCharlie (Acceptable but modifications needed) staining or other shade modifications required, and Delta (Unacceptable) remake.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03295513
|Contact: Nouran M Ibrahim||01149928886 ext +email@example.com|