Fatigue resistance of ultrathin CAD/CAM complete crowns with a simplified cementation process

Magne, Pascal; Carvalho, Adriana Oliveira; Bruzi, G.; Giannini, Marcelo

doi:10.1016/j.prosdent.2015.04.014

Cited by 46 publications

(33 citation statements)

References 12 publications

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“…The presence in our study and in the latter of a resin cavity as adhesive substrate to replace dentin has certainly improved the standardization of the set-up but it could have influenced also the long-terme adhesive performances of Lava Ultimate crowns and endocrowns. However, under analogous testing conditions (stepwise fatigue loading) Magne et al [50] and Carvalho et al [51] showed optimal fatigue resistance of Lava Ultimate crowns bonded to coronal dentin, without any restoration debonding but partial adhesive failures. At the best of authors' knowledge, no clinical trials exist on Lava Ultimate crowns.…”

Section: Discussionmentioning

confidence: 95%

Fatigue behavior of resin-modified monolithic CAD–CAM RNC crowns and endocrowns

et al. 2016

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Section: Discussionmentioning

confidence: 95%

Fatigue behavior of resin-modified monolithic CAD–CAM RNC crowns and endocrowns

et al. 2016

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“…This choice was due to the simplification of cementation procedures allowed by self-adhesive resin cements; the self-cure mode ensures optimal polymerization and the phosphate monomers contained in these cements were proved to guarantee a valid bonding durability both to enamel and dentin and to zirconia surface (Magne et al 2015).…”

Section: Discussionmentioning

confidence: 99%

In vitro analysis of the fracture resistance of CAD–CAM monolithic zirconia molar crowns with different occlusal thickness

Sorrentino

Triulzio

Tricarico

et al. 2016

Journal of the Mechanical Behavior of Biomedical Materials

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“…Additional tooth reduction to create restorative space may not be appropriate following a substantial amount of pathological tooth loss if progressive tooth eruption has compensated for wear/erosion . Minimal reduction to avoid pulp exposures and the use of ultra‐thin restorations may be the best treatment alternative . Previous studies have shown minimum thickness all ceramic crowns may have fracture strengths suitable for use as a single posterior restoration …”

Section: Introductionmentioning

confidence: 99%

“…Minimal reduction to avoid pulp exposures and the use of ultra‐thin restorations may be the best treatment alternative . Previous studies have shown minimum thickness all ceramic crowns may have fracture strengths suitable for use as a single posterior restoration …”

Section: Introductionmentioning

confidence: 99%

Fracture Resistance of Various Thickness e.max CAD Lithium Disilicate Crowns Cemented on Different Supporting Substrates: An In Vitro Study

Chen

Park

Wang

et al. 2019

Journal of Prosthodontics

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Purpose:To investigate the influence of abutment material properties on the fracture resistance and failure mode of lithium disilicate (IPS e.max) CAD/CAM (computeraided design/manufacturing) crowns on traditionally and minimally prepared simulated tooth substrates. Materials and Methods: Thirty lithium disilicate (IPS e.max) CAD/CAM crowns were divided into three groups (n = 10): TD: traditional thickness crowns cemented on Paradigm MZ100 abutments; MD: minimal thickness crowns cemented on Paradigm MZ100 abutments; ME: minimal thickness crowns cemented on e.max abutments. The 3Shape system was used to scan, design and mill all abutments and crowns with a die space set to 40 µm. Traditional thickness crowns were designed based on manufacturer guidelines with 1.5 mm occlusal thickness and 1.0 mm margins. Minimal thickness crowns were designed with 0.7 mm occlusal thickness and 0.5 mm margins. MZ100 composite and e.max abutments were selected to simulate dentin and enamel substrates, respectively, based on their elastic-modulus. Variolink Esthetic was used to cement all samples following manufacturer's instructions. A universal testing machine was used to load all specimens to fracture with a 3 mm radius stainless steel hemispherical tip at a crosshead speed 0.5 mm/minute along the longitudinal axis of the abutment with a 1 mm thermoplastic film placed between the loading tip and crown surface. Data was analyzed using ANOVA and Bonferroni post hoc assessment. Fractographic analysis was performed with scanning electron microscopy (SEM). Results: The mean fracture load (standard deviation) was 1499 (241) N for TD; 1228 (287) N for MD; and 1377 (96) N for ME. Statistically significant difference between groups did not exist (p = 0.157, F = 1.995). In groups TD and MD with low e-modulus abutments, the dispersion of a probability distribution (coefficient of variation: CV) was statistically higher than that of group ME with high e-modulus abutments. SEM illustrated larger micro-fracture dimensions in Group MD than Group ME. Conclusion: Minimal thickness e.max crowns did not demonstrate statistical difference in fracture resistance from traditional thickness crowns. Fracture mechanisms of minimal thickness e.max crowns may be affected by the e-modulus of the substrate. Minimal thickness e.max crowns may be a viable restorative option when supported by high e-modulus materials.

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Fatigue resistance of ultrathin CAD/CAM complete crowns with a simplified cementation process

Cited by 46 publications

References 12 publications

Fatigue behavior of resin-modified monolithic CAD–CAM RNC crowns and endocrowns

Fatigue behavior of resin-modified monolithic CAD–CAM RNC crowns and endocrowns

In vitro analysis of the fracture resistance of CAD–CAM monolithic zirconia molar crowns with different occlusal thickness

Fracture Resistance of Various Thickness e.max CAD Lithium Disilicate Crowns Cemented on Different Supporting Substrates: An In Vitro Study

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