Clinical Assessment of Color Stability and Patient Satisfaction for Polished Versus Glazed Lithium Disilicate Glass Ceramic Restorations and Patient Satisfaction

Color Change of Lithium Disilicate Crowns Clinical Trial

Official title:

Clinical Assessment of Color Stability and Patient Satisfaction for Polished Versus Glazed Lithium Disilicate Glass Ceramic Restorations and Patient Satisfaction

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT03696641
• Other study ID #: CEBD-CU-2018-09-25
• Status: Not yet recruiting
• Phase: N/A
• Start date: November 1, 2018
• Est. completion date: November 1, 2019

Study information

• Verified date: October 2018
• Source: Cairo University
• Contact: rasha sayed MOSALLAM, MDS
• Phone: 01004222871
• Email: rashamosallam[@]yahoo.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Dental overglaze is consist of colorless glass powder and applied to the fired crown surface to provide a glossy surface,Adjustment procedure break the production of the glaze layer through a natural glaze or overglaze process and create a rough surface, glazing or polishing after adjustment procedures is important to enhance the appearance of the restoration

Description:

Dental overglaze is consist of colorless glass powder and applied to the fired crown surface to provide a glossy surface. Natural glaze is a vitrified layer that is formed on the surface of the porcelain containing a glass phase when the porcelain is heated to a glazing temperature for a specific time, Adjustment procedure break the production of the glaze layer through a natural glaze or overglaze process and create a rough surface, The color of porcelain restorations is affected by surface roughness because rough surface reflects light irregularly and less than a glazed surface . Therefore, glazing or polishing after adjustment procedures is important to enhance the appearance of the restoration .

Although glazed surfaces appeared whiter, the CIE L* value measured with the specular component excluded (SCE) geometry was lower than that of polished surfaces (28).Several reports have investigated different polishing techniques that support the use of polishing as an alternative for glazing of ceramic restorations .

Polishing can reduce chair time, eliminates laboratory procedures, infection control may be obtained . Polishing is also important for the porcelain surface for esthetic so several different techniques have been described for repolishing porcelain surfaces in the mouth .

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 20
• Est. completion date: November 1, 2019
• Est. primary completion date: November 1, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

• All subjects are required to be:

1. From 18-50 years old, be able to read and sign the informed consent document.

2. Physically and psychologically able to tolerate conventional restorative procedures

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

4. 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 4. Psychiatric problems or unrealistic expectations

Related Conditions & MeSH terms

• Color Change of Lithium Disilicate Crowns

Intervention

Other:
• glazed lithium disilicate crowns
glazing of IPS e.max crowns
• polished lithium disilicate crowns
polishing of IPS e.max crowns

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Cairo University

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	color stability	L* a* b* values and ?E	one year
Secondary	patient satisfaction	patient satisfaction through a questionnaire	one year