Marginal adaptation of ceramic crowns: A systematic review

Contrepois, Mathieu; Soenen, Arnaud; Bartala, Michel; Laviole, Odile

doi:10.1016/j.prosdent.2013.08.003

Cited by 332 publications

(338 citation statements)

References 79 publications

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“…The present study revealed no significant differences in the marginal fit between the single 16 The analysis revealed a large range in the marginal discrepancy, with over 90% of the measured values < 120 μm.…”

Section: Discussioncontrasting

confidence: 48%

“…[8][9][10][11][12][13][14][15] A recent systematic review assessed the results of the marginal fit for crowns fabricated with 17 different fabrication processes. 16 The analysis revealed a wide range in the results. However, direct comparison between the systems was impossible because of the heterogeneity of the experimental protocols of the included studies, for example, the measurement method.…”

Section: Introductionmentioning

confidence: 97%

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Randomized controlled within-subject evaluation of digital and conventional workflows for the fabrication of lithium disilicate single crowns. Part III: marginal and internal fit

Zeltner

Sailer

Mühlemann

et al. 2017

The Journal of Prosthetic Dentistry

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STATEMENT OF PROBLEM Trials comparing the overall performance of digital with that of conventional workflows in restorative dentistry are needed. PURPOSE The purpose of the third part of a series of investigations was to test whether the marginal and internal fit of monolithic crowns fabricated with fully digital workflows differed from that of crowns fabricated with the conventional workflow. MATERIAL AND METHODS In each of 10 participants, 5 monolithic lithium disilicate crowns were fabricated for the same abutment tooth according to a randomly generated sequence. Digital workflows were applied for the fabrication of 4 crowns using the Lava, iTero, Cerec inLab, and Cerec infinident systems. The conventional workflow included a polyvinyl siloxane impression, manual waxing, and heat-press technique. The discrepancy between the crown and the tooth was registered using the replica technique with polyvinyl siloxane material. The dimensions of the marginal discrepancy (Discrepancymarginal) and the internal discrepancy in 4 different regions of interest (Discrepancyshoulder, Discrepancyaxial, Discrepancycusp, and Discrepancyocclusal) were assessed using light microscopy. Post hoc Student t test with Bonferroni correction was applied to detect differences (=.05). RESULTS Discrepancymarginal was 83.6 ±51.1 m for the Cerec infinident, 90.4 ±66.1 m for the conventional, 94.3 ±58.3 m for the Lava, 127.8 ±58.3 m for the iTero, and 141.5 ±106.2 m for the Cerec inLab workflow. The differences between the treatment modalities were not statistically significant (P>.05). Discrepancyshoulder was 82.2 ±42.4 m for the Cerec infinident, 97.2 ±63.8 m for the conventional, 103.4 ±52.0 m for the Lava, 133.5 ±73.0 m for the iTero, and 140.0 ±86.6 m for the Cerec inLab workflow. Only the differences between the Cerec infinident and the Cerec inLab were statistically significant (P=.036). The conventionally fabricated crowns revealed significantly lower values in Discrepancycusp and Discrepancyocclusal than all the crowns fabricated with digital workflows (P<.05). CONCLUSIONS In terms of marginal crown fit, no significant differences were found between the conventional and digital workflows for the fabrication of monolithic lithium disilicate crowns. In the occlusal regions, the conventionally manufactured crowns revealed better fit than the digitally fabricated crowns. Chairside milling resulted in less favorable crown fit than centralized milling production. Purpose. The purpose of the fourth part of a series of investigations was to test whether the marginal and internal fit of monolithic crowns fabricated with fully digital workflows differed from that of crowns fabricated with the conventional workflow. Material and methods.In each of 10 participants, 5 monolithic lithium disilicate crowns were fabricated for the same abutment tooth according to a randomly generated sequence.Digital workflows were applied for the fabrication of 4 crowns with Lava, iTero, Cerec inLab, and Cerec infinident systems. The conventional workflow ...

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Section: Discussioncontrasting

confidence: 48%

Section: Introductionmentioning

confidence: 97%

Randomized controlled within-subject evaluation of digital and conventional workflows for the fabrication of lithium disilicate single crowns. Part III: marginal and internal fit

Zeltner

Sailer

Mühlemann

et al. 2017

The Journal of Prosthetic Dentistry

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“…Currently, some commercial translucent LDS framework ceramics might still have an advantage in this respect, especially when discussing the anterior (front) tooth area. In both cases, CAD/CAM processing of translucent LDS ceramic, as well as translucent ZrO 2 substrate, requires a two-step sintering process [2].…”

Section: Resultsmentioning

confidence: 99%

“…When discussing the current state of the art in dental restoration based on all-ceramic materials, it is essential to distinguish between framework ceramics and veneer ceramics [1][2][3][4][5][6]. Furthermore, the interaction between the substrate and the veneer ceramic is critical in applications of any composite material.…”

Section: Introductionmentioning

confidence: 99%

A multi technique study of a new lithium disilicate glass-ceramic spray-coated on ZrO2 substrate for dental restoration

Möncke¹,

Ehrt²,

Πάλλες³

et al. 2017

Biomedical Glasses

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A multi technique study of a new lithium disilicate glass-ceramic spray-coated on ZrO 2 2 2 substrate for dental restoration https://doi.org/10.1515/bglass-2017-0004 Received May 05, 2017 revised Jul 07, 2017; accepted Aug 09, 2017 Abstract: An alkali niobate-silicate veneer ceramic for ZrO 2 -based dental restoration was developed and characterized for its physical properties and structure. The properties were adjusted for dental applications. The new lithium disilicate glass-ceramic VBK (sold as cerafusion or LiSi) can easily be applied by spray coating to any individually formed ZrO 2 -matrix and needs only one final tempering treatment. The surface of the glass-ceramic is very smooth. The color of the already translucent glass-ceramic can be adjusted to that of individual natural teeth. The structure of the glass-ceramic was studied by XRD and Raman spectroscopy as a function of heat-treatment and of spatial variations within the material and at its interfaces. ToF SIMS, SEM and thermal analysis techniques were applied to investigate the crystallization behavior and surface-interface reactions. XRD and Raman spectroscopy identified different crystalline phases in the amorphous glass matrix including Li 2 Si 2 O 5 , Li 2 SiO 3 , NaxLi (1−x) NbO 3 and Na 3 NbO 4 . The Raman spectrum of the amorphous matrix is dominated by the vibrational activity of the highly polarizable niobate units with a prominent feature at 865 cm −1 , assigned to Nb-O stretching in NbO 6 octahedra, which have non-bridging oxygen atoms and are connected to the silicate matrix rather than to other niobate polyhedra.

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“…Yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics are widely used in computer-aided design and computer-aided manufacturing (CAD-CAM) systems for the fabrication of core materials for fixed dental prostheses and implant abutments 2,[5][6][7][8] . The well-known transformation toughening mechanism of Y-TZP ceramics is responsible for their excellent mechanical properties 9,10) .…”

Section: Introductionmentioning

confidence: 99%

Comparative radiopacity of conventional and full-contour Y-TZP ceramics

Pekkan

Sarıdağ

Pekkan

et al. 2016

Dental Materials Journal

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The purpose of this study was to evaluate the radiopacity of different yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics used in the fabrication of fixed dental prostheses. Disk-shaped specimens (N=120, n=30 per group) were fabricated with thicknesses of 0.3, 0.5, and 1 mm from the following four Y-TZP ceramics: Cercon ht (Degudent) (CZ), Prettau (Zirkonzahn) (ZZ), Alliance (Kuraray Noritake Dental) (NA), and Ice Zirkon (Zirkonzahn) (ICE). The optical densities of each material were measured from radiographic images, and each material (N=1) were characterized by using XRD and SEM. The results were analyzed with oneway analysis of variance and the Tukey-Kramer test (α=0.05). In the case of the ICE and NA specimens, the radiopacity significantly differed with thickness (p<0.05). However, the radiopacities of 0.5-and 0.3-mm-thick CZ and ZZ specimens were not significantly different (p>0.05). Full-contour Y-TZP materials have higher radiopacities than those of the conventional Y-TZP materials in decreased thicknesses.

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Marginal adaptation of ceramic crowns: A systematic review

Cited by 332 publications

References 79 publications

Randomized controlled within-subject evaluation of digital and conventional workflows for the fabrication of lithium disilicate single crowns. Part III: marginal and internal fit

Randomized controlled within-subject evaluation of digital and conventional workflows for the fabrication of lithium disilicate single crowns. Part III: marginal and internal fit

A multi technique study of a new lithium disilicate glass-ceramic spray-coated on ZrO2 substrate for dental restoration

Comparative radiopacity of conventional and full-contour Y-TZP ceramics

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