Evaluation of Patient Satisfaction and Color Difference Between Natural Teeth and Monolithic All-ceramic Crowns Fabricated From Celtra Press Treated With Different Surface Finishing Protocols

Study Overview
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Brief Summary
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investigating the effect of glazing and polishing on the color difference between natural teeth and all ceramic crowns made from celtra press (zirconia reinforced lithium silicate ceramic).

Detailed Description
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Two groups of patients will be selected according to special inclusion criteria N=5 in each group total of 10 patients, one of the two groups will receive a glazed zirconia reinforced lithium silicate ''celtra press'' crowns and the other group will receive a polished ones of the same material , after crowns delivery color difference (ΔE) between the natural teeth and the celtra press crown will be measured by a spectrophotometer device (intra oral) and patient satisfaction will be recorded.

Official Title
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Evaluation of Patient Satisfaction and Color Difference Between Natural Teeth and Monolithic All-ceramic Crowns Fabricated From Zirconia Reinforced Lithium Silicate Ceramics Celtra Press Treated With Different Surface Finishing Protocols.

Conditions
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Natural Optical Properties

Intervention / Treatment
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* Other: polished celtra press full coverage crown
* Other: glazed celtra press full coverage crowns
* Other: contralateral natural teeth


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age range of the patients from 20-45 years old; able to read and sign the informed consent document, illiterate patient will be avoided. Patients able physically and psychologically to tolerate conventional restorative procedures. Patients with no active periodontal or pulpal diseases, having teeth with good restorations. Patients with teeth problems indicated for full coverage restoration ( coronal fracture where partial coverage would lack retention, malposed or malformed teeth). Patients with root canal treated teeth requiring full coverage restorations with contralatral tooth not filled or fractured. Patients willing to return for follow-up examinations and evaluation. Exclusion Criteria: Patients in the growth stage with partially erupted teeth. Patients with poor oral hygiene and motivation. Pregnant women's to avoid any complication that may occur in dental office due to pregnancy or due to injected anesthetic solution. Patients with psychiatric problems or unrealistic expectation Deep discoloration of abutment .

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 45 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
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: polished celtra press full coverage crowns<br>a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by just polishing | Other: polished celtra press full coverage crown<br>* a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by just polishing<br>* Other names: polished all ceramic crown;|
| Experimental: glazed celtra press full coverage crowns<br>a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by glazing | Other: glazed celtra press full coverage crowns<br>* a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by glazing<br>* Other names: glazed all ceramic crown;|
| Active Comparator: contralateral natural teeth<br>the poilshed and glazed all ceramic crowns will be compared by the contralateral natural teeth | Other: contralateral natural teeth<br>* the polished and glazed all ceramic crowns will be compared by the contralateral natural teeth<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| color match | Color match will be measured using United states pulplic health service  system . Scale system : Alpha : Excellent colour match and shade between restoration and adjacent tooth, restoration almost invisible Bravo : Slightly mismatching between the restoration and the adjacent tooth, which is in the normal range of tooth colour, translucence, and/or shade Charlie : Obvious mismatch, beyond the normal range Delta : Gross mismatch/aesthetically displeasing colour, shade, and/or translucence | immediately after crown delivery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Color difference | The color difference (ΔE) will be measured using spectrophotometer | immediately after crown delivery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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celtra press