Ceramic dental biomaterials and CAD/CAM technology: State of the art

Li, Raymond Wai Kim; Chow, Tak W; Matinlinna, Jukka Pekka

doi:10.1016/j.jpor.2014.07.003

Cited by 378 publications

(324 citation statements)

References 82 publications

Supporting

Mentioning

298

Contrasting

Unclassified

Order By: Relevance

“…The CAD/CAM processing procedures commonly used for metal-free restorations are based on the milling of a soft and easily formable, partially crystallised phase. Subsequently the restoration in the established shape is thermally treated to obtain the final mechanical properties and color shade required for oral applications 3,39) . In the PCs, ZLS appears to be brittle, as demonstrated by this study.…”

Section: Discussionmentioning

confidence: 99%

The zirconia-reinforced lithium silicate ceramic: lights and shadows of a new material

Traini

Sinjari

Pascetta³

et al. 2016

Dental Materials Journal

View full text Add to dashboard Cite

This study aims to investigate the mechanical properties, composition and surface preparation for adhesive bonding of the recently introduced zirconia-reinforced lithium silicate (ZLS) glass-ceramic. One single block of ZLS was used to prepare the specimens (n=14). The fracture toughness (Ft) and the Vickers hardness (HV) were measured on specimens partially crystallized (PCs) (n=4) and fully crystallized (FCs) at 840°C for 8 min (n=4). The surface treatment was done using hydrofluoric-acid gel (HF) at different concentrations and times of action on FCs specimens (n=4). SEM-EDX was used to test elemental composition and crystalline phases (n=2). The new ZLS glass-ceramic showed significantly higher values of HV and Ft for FCs, PCs showed a brittle behavior. The surface etching should be made using HF at 4.9% for 20 s.

show abstract

Section: Discussionmentioning

confidence: 99%

The zirconia-reinforced lithium silicate ceramic: lights and shadows of a new material

Traini

Sinjari

Pascetta³

et al. 2016

Dental Materials Journal

View full text Add to dashboard Cite

show abstract

“…The use of computeraided design/computer-aided machining (CAD/CAM) technology has allowing the manufacture of indirect allceramic restorations using pre-fabricated ceramic blocks, obtained in an industrial and standardized process, which reduces the incorporation of defects, and results in a more homogeneous material [11,12]. CAD/CAM ceramics, such as feldspathic, leucite, lithium disilicate and zirconia, are usually supplied in blocks, with a cuboid geometry, for machining in CAD/CAM systems.…”

Section: O Presente Estudo Avaliou a Influência Da Geometria Do Corpomentioning

confidence: 99%

Influence of the geometry of ceramic specimens on biaxial flexural strength: experimental testing and finite element analysis

et al. 2018

View full text Add to dashboard Cite

This study evaluated the influence of the geometry of ceramic specimens (disc vs. square plate) on the biaxial flexural strength (BFS) using an experimental set and finite element analysis (FEA). Leucite glass-ceramic blocks were used in the preparation of disc (D; n=14) and square plate (S; n=13) specimens with the same lower (tensile) surface area. The specimens were subjected to a piston-on-three-ball flexural test (ISO 6872:2008). To calculate the BFS of the S group, the specimen radius, indicated by the ISO 6872:2008 formula for discs, was replaced by half of the side length. FEA compared the pattern of stress distribution and the first principal stress between D and S specimens having the same and different lower (tensile) surface area. Student's t-test showed no difference (p=0.85) in the BFS between D (95.0±9.6 MPa) and S (84.3±10.3 MPa). FEA indicated a similar pattern of stress distribution, with almost no difference in the first principal stress of discs and square plates with the same lower (tensile) surface area. In the experimental condition investigated, square plate ceramic specimens can be used in piston-on-three-ball tests. For the calculation of the BFS, the specimen radius may be replaced by half side length of the square specimen.

show abstract

“…However, no consensus has yet been reached on the clinically acceptable dimension of the interface, ranging the values reported in the literature from 50-200 μm [7][8][9] , and most researchers continue to use the criteria established by McLean and von Fraunhofer 10) . Several studies demonstrated that the final adaptation of the restorations depends on several factors such as finish line, manufacturing technique, porcelain firing and cementing 9,[11][12][13] . Different methods are used to analyze the marginal fit of the restorations, but there is an absence of standardization in the methodology 14) .…”

Section: Introductionmentioning

confidence: 99%

SEM evaluation of the precision of fit of CAD/CAM zirconia and metal-ceramic posterior crowns

Ortega

Gonzalo

Gómez‐Polo

et al. 2017

Dental Materials Journal

View full text Add to dashboard Cite

The purpose of this study is to evaluate the precision of fit of posterior crowns made from three commercial CAD/CAM zirconia ceramics and conventional metal-ceramic technique. The external and internal marginal fit of the crowns was evaluated using direct SEM-based measurements. The data were subjected to Kruskal-Wallis, multicomparison post hoc analysis and Wilcoxon rank sum tests (α=0.05). Significant differences were observed for the external (p<0.002) and the internal (p<0.0001) marginal evaluation among the groups. No differences were observed between the buccal and lingual surfaces for the external (p=0.34) and internal (p=0.55) evaluations. No differences were showed between the external and internal measurements (p=0.37). The accuracy of fit was within the range of clinical acceptance. The lowest discrepancies corresponded to the NobelProcera group for external (39.3±11.81 μm) and internal (41.09±7.54 µm) marginal fit. The results confirmed that destructive methods are not required to assess the marginal fit of dental prosthetic crowns.

show abstract

Ceramic dental biomaterials and CAD/CAM technology: State of the art

Abstract: The clinical uses of these ceramics have met with variable clinical success. Multiple options are now available to the clinicians for the fabrication of aesthetic all ceramic restorations.

Cited by 378 publications

References 82 publications

The zirconia-reinforced lithium silicate ceramic: lights and shadows of a new material

The zirconia-reinforced lithium silicate ceramic: lights and shadows of a new material

Influence of the geometry of ceramic specimens on biaxial flexural strength: experimental testing and finite element analysis

SEM evaluation of the precision of fit of CAD/CAM zirconia and metal-ceramic posterior crowns

Contact Info

Product

Resources

About