Natural Optical Properties
Conditions
Keywords
celtra press
Brief summary
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
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.
Interventions
OTHERpolished celtra press full coverage crown
a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by just polishing
OTHERglazed celtra press full coverage crowns
a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by glazing
OTHERcontralateral natural teeth
the polished and glazed all ceramic crowns will be compared by the contralateral natural teeth
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
20 Years to 45 Years
Healthy volunteers
No
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 .
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| color match | immediately after crown delivery | 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 |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Color difference | immediately after crown delivery | The color difference (ΔE) will be measured using spectrophotometer |
Other
| Measure | Time frame | Description |
|---|---|---|
| patient satisfaction | immediately after crown delivery | Patient satisfaction using Visual Analogue scale- Binary (Satisfied or not satisfied) |
Contacts
Primary Contactnourhan sayed
Outcome results
None listed