In vitro Evaluation of the Marginal Fit and Internal Adaptation of Zirconia and Lithium Disilicate Single Crowns: Micro-CT Comparison Between Different Manufacturing Procedures

The Open Dentistry Journal
Francesco RiccitielloR Sorrentino

Abstract

Prosthetic precision can be affected by several variables, such as restorative materials, manufacturing procedures, framework design, cementation techniques and aging. Marginal adaptation is critical for long-term longevity and clinical success of dental restorations. Marginal misfit may lead to cement exposure to oral fluids, resulting in microleakage and cement dissolution. As a consequence, marginal discrepancies enhance percolation of bacteria, food and oral debris, potentially causing secondary caries, endodontic inflammation and periodontal disease. The aim of the present in vitro study was to evaluate the marginal and internal adaptation of zirconia and lithium disilicate single crowns, produced with different manufacturing procedures. Forty-five intact human maxillary premolars were prepared for single crowns by means of standardized preparations. All-ceramic crowns were fabricated with either CAD-CAM or heat-pressing procedures (CAD-CAM zirconia, CAD-CAM lithium disilicate, heat-pressed lithium disilicate) and cemented onto the teeth with a universal resin cement. Non-destructive micro-CT scanning was used to achieve the marginal and internal gaps in the coronal and sagittal planes; then, precision of fit measurements ...Continue Reading

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Citations

Jan 16, 2020·International Journal of Environmental Research and Public Health·Francesco Guido ManganoOleg Admakin
Jul 6, 2019·BMC Oral Health·Fernando ZaroneRoberto Sorrentino
Jan 26, 2021·Journal of Indian Prosthodontic Society·Natália Almeida BastosJuliana Fraga Soares Bombonatti
Feb 25, 2021·BioMed Research International·Luca FiorilloMarco Cicciù
Nov 17, 2021·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Andrea BaldiNicola Scotti

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Software Mentioned

SPSS
CARES Visual
Skyscan Data Viewer
NRecon
CARES System
Mimics

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