NCT05437432|Completed
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Sponsor study identifier
interventional
50
1 country
1
Study Start
March 1, 2022
Actual (reported)Primary Completion
May 1, 2023
Actual (reported)Study Completion
January 1, 2024
Actual (reported)There is limited data available on VITA AMBRIA glass ceramic , so this study is conducted to investigate the esthetic parameters of this new glass press system.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
January 1, 2024
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
March 1, 2022
Actual (reported)June 25, 2022
Actual (reported)June 29, 2022
Actual (reported)May 1, 2023
Actual (reported)January 1, 2024
Actual (reported)Color stability and translucency
According to FDI criteria; 1. Color and translucency of the restoration have a clinically excellent colour match with the surrounding enamel and adjacent teeth. There is no difference in shade, brightness or translucency between restoration and tooth. 2. Colour match is clinically acceptable but minor deviations in shade between tooth and restoration are apparent. 3. Colour match is satisfactory; there is a clear deviation in colour match that does not affect aesthetics. 4. Colour and/or translucency are clinically unsatisfactory. There is a localized discoloration or opaqueness in the restoration making it immediately recognizable from a speaking distance and affecting the appearance of the dentition. Partial removal and repair are possible. 5. Colour match and/or translucency. are clinically unsatisfactory. The restoration displays an unacceptable alteration in colour and/or translucency. Restoration needs replacement.
12 months
Surface gloss/Luster
12 months
Staining a. surface b. margin
12 months
Esthetic anatomical form
12 months
onlays constructed from zirconia-reinforced lithium disilicate glass ceramic press system
onlays constructed from lithium disilicate glass ceramic press system
25 onlay restroations will be fabricated from Vita-ambria glass ceramic press system.
25 onlay restroations will be fabricated from IPS e.max glass ceramic press system.
Faculty of Dental Medicine, Boys, Cairo Al-Azhar University
Cairo, Nasr City, 11768, Egypt
Azeem RA, Sureshbabu NM. Clinical performance of direct versus indirect composite restorations in posterior teeth: A systematic review. J Conserv Dent. 2018 Jan-Feb;21(1):2-9. doi: 10.4103/JCD.JCD_213_16.
Pop-Ciutrila IS, Ghinea R, Dudea D, Ruiz-Lopez J, Perez MM, Colosi H. The effects of thickness and shade on translucency parameters of contemporary, esthetic dental ceramics. J Esthet Restor Dent. 2021 Jul;33(5):795-806. doi: 10.1111/jerd.12733. Epub 2021 Apr 18.
Hussein R Mohamed
Assistant Professor of Crown and Bridge Faculty of Dental Medicine, Boys, Cairo Al-Azhar University
Ahmad M El Kouedi
Professor of Crown and Bridge Faculty of Dental Medicine, Boys, Cairo Al-Azhar University
50 participants (actual enrollment reported by the registry).
First Submitted
June 25, 2022
First Posted
June 29, 2022
Study Start
March 1, 2022
Actual (reported)Clinical Performance of Onlay Restorations After Cervical Margin Relocation (CMR)
Contact the study team to confirm eligibility.
Primary Completion
May 1, 2023
Actual (reported)Study Completion
January 1, 2024
Actual (reported)Last Updated
October 28, 2026
Record last verified: 2026-10
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Source: ClinicalTrials.gov.
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