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Clinical Evaluation and Patient Satisfaction of Shade Matching Between Natural Teeth and Monolithic All-ceramic Crowns Fabricated From Two Materials
Sponsor: Cairo University
Summary
evaluation of color difference between zirconia reinforced lithium silicate (celtra press) VS lithium disilicate (Emax) in relation to natural tooth structure to determine which monolithic material will provide restoration with exact shade and optical properties as natural tooth structure.
Official title: Clinical Evaluation and Patient Satisfaction Ofshade Matching Between Natural Teeth and Monolithic All-ceramic Crowns Fabricated From Two Materials (Randomized Controlled Clinical Trial)
Key Details
Gender
All
Age Range
20 Years - 45 Years
Study Type
INTERVENTIONAL
Enrollment
10
Start Date
2026-11
Completion Date
2026-12
Last Updated
2026-10-09
Healthy Volunteers
No
Conditions
Interventions
Celtra Press
new class of zirconia-reinforced lithium silicate material available to labs for pressing. This unique material provides top aesthetics and is virtually impossible to tell apart from a natural tooth. Celtra Press is a multiphase ceramic consisting of a glass matrix and lithium disilicate crystals having a crystal length of about 1.5 µm plus nano-scale lithium phosphate . In addition to Li2O and SiO2, Celtra Press contains about 10% zirconia (ZrO2), which is dissolved completely in the glass phase rather than in crystalline form. Celtra Press is characterized by a high strength of about 500 MPa and excellent flow properties during pressing.