Clinical Evaluation and Patient Satisfaction of Shade Matching Between Natural Teeth and Monolithic All-ceramic Crowns Fabricated From Two Materials

Natural Optical Properties Clinical Trial

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)

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT03779607
• Other study ID #: CEBD-CU-2018-11-13
• Status: Not yet recruiting
• Phase: N/A
• Start date: January 2019
• Est. completion date: December 2019

Study information

• Verified date: January 2019
• Source: Cairo University
• Contact: mohamed bekhiet, master degree student
• Phone: 01224238808
• Email: mohamed.bekhet[@]dentistry.cu.edu.eg
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Description:

eligible patients will be randomized in 2 equal group between study group (celtra press) and control group (Emax) .

Single tooth in esthetic zone requiring full coverage crown is prepared to receive an all ceramic crown of .

Grouping: The crowns will be divided into two groups:

I:Teeth receiving crowns fabricated from IPS emax press ( ivoclarvivadent) II:Teeth receiving crowns fabricatedfrom Celtrapress(dentsplysirona).

Shade will be measured using intraoral spectrophotometer and evaluated.

The color difference (ΔE ) will be calculated for each sample using the following equation:

ΔE =[(ΔL*)²+(Δa*)² + (Δb*)²]½

ΔE (perceptibility threshold ) will be evaluated for each group.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 10
• Est. completion date: December 2019
• Est. primary completion date: November 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 20 Years to 45 Years

Eligibility

Inclusion Criteria:

• 1. Age range of the patients from 20-45 years old; able to read and sign the informed consent document, illiterate patient will be avoided.

2. Patients able physically and psychologically to tolerate conventional restorative procedures.

3. Patients with no active periodontal or pulpal diseases, having teeth with good restorations.

4. Patients with teeth problems indicated for full coverage restoration ( coronal fracture where partial coverage would lack retention, malposed or malformed teeth).

5. Patients with root canal treated teeth requiring full coverage restorations with contralatral tooth not filled orfractured.

6. Patients willing to return for follow-up examinations and evaluation.

Exclusion Criteria:

1. Patients in the growth stage with partially erupted teeth.

2. Patients with poor oral hygiene and motivation.

3. Pregnant women's to avoid any complication that may occur in dental office due to pregnancy or due to injected anesthetic solution.

4. Patients with psychiatric problems or unrealistic expectation

5. Patients have no opposite occluding dentition in the area intended for restoration\

6. Patients suffer from parafunctional habits.

7. deep discoloration of abutment .

8. Smokers and heavy caffeine consumers.

Related Conditions & MeSH terms

• Mouth, Edentulous
• Natural Optical Properties

Intervention

Other:
• 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.

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Cairo University

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Color match	using USPHS scoring system	immediately after crown cementation
Secondary	Patient satisfaction	Patient satisfaction using Visual Analogue scale- Binary (Satisfied or not satisfied)	immediately after crown cementation