Film thickness and fluidity of various luting cements determined using a trial indentation meter

Tsukada, Gakuji; Tanaka, Toshiaki; Kajihara, Takeshi; Torii, Mitsuo; Inoue, Kouichi

doi:10.1016/j.dental.2005.04.014

Cited by 11 publications

(9 citation statements)

References 9 publications

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“…Nevertheless, all three groups had mean AMD values above the 120-μm threshold for clinically acceptable margins [8]. In addition to factors like the impression technique and the manufacturing procedure, possible reasons for the higher values could have been the convergence angle of the axial walls, the seating pressure during cementation, and the flowing properties of the luting materials [14,35]. Lower Clin Oral Invest (2020) 24:1929-1938 AMD values might have been achieved if dynamic loading during the seating of the crowns had been performed [35,36].…”

Section: Discussionmentioning

confidence: 99%

“…In addition to factors like the impression technique and the manufacturing procedure, possible reasons for the higher values could have been the convergence angle of the axial walls, the seating pressure during cementation, and the flowing properties of the luting materials [14,35]. Lower Clin Oral Invest (2020) 24:1929-1938 AMD values might have been achieved if dynamic loading during the seating of the crowns had been performed [35,36]. The manufacture of the crowns in this study was done strictly digitally, including the impression procedure, the virtual design, and the milling of the crowns.…”

Section: Discussionmentioning

confidence: 99%

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Influence of two different cement space settings and three different cement types on the fit of polymer-infiltrated ceramic network material crowns manufactured using a complete digital workflow

et al. 2019

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Objectives The study evaluates the influence of two spacer settings and three resin luting materials on the marginal and internal fit of polymer-infiltrated ceramic network (PICN) material crowns manufactured using a complete digital workflow. Methods Optical impressions of fifty identical dies were performed using the 3M scanner (software version 5.0.2). Twenty crowns were designed using Ceramill Mind (version 3.4.10.1163), from which ten with spacer setting of 50 μm (G1) and ten with 80 μm (G2). Thirty crowns (spacer setting of 50 μm) were divided into three groups corresponding to the resin materials used as follows: RelyX Unicem (RX), Variolink Esthetic (VLE), and Nexus 3 (NX3). All crowns were milled from Vita Enamic blocks. After micro-CT scanning, absolute marginal discrepancy (AMD), internal gap (IG), total cement space volume (TCV), and marginal porosities (VP) were measured. Results Significant difference was detected on the VP between the RX and NX3 group (p = 0.033). The mean values of all parameters were the following: AMD (μm)VP (mm 3 ): G1 0.26, G2 0.34, RX 0.32, VLE 0.46, NX3 0.54. Conclusions Fit of PICN material crowns was not significantly influenced by increasing the spacer settings and cementation with different resin materials. Additionally, RelyX Unicem showed significantly less porosities as compared with Nexus3. Clinical relevance Both 50 μm and 80 μm virtual spacer settings can be suggested for the manufacture of PICN crowns when Ceramill Mind (version 3.4.10.1163) is used. Furthermore, a self-adhesive system can be recommended for the cementation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Influence of two different cement space settings and three different cement types on the fit of polymer-infiltrated ceramic network material crowns manufactured using a complete digital workflow

et al. 2019

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“…They are summarized by Abduo et al [27]. Reported ranges of marginal gaps are between <80 μm up to 150 μm, which are regarded as clinically acceptable [28,29,30,31,32,33]. The marginal gap for lithium disilicate crows which were manufactured with the Everest CAD/CAM system showed values of 28.1 ± 7.9 µm and manufactured with the Cerec inLab CAD (CAM system 40.2 ± 6.7 μm [34].…”

Section: Discussionmentioning

confidence: 99%

Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns

Naumova

Valta²,

Schaper

et al. 2015

Materials

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Objectives: To evaluate the microleakage and marginal gap of various luting materials after cementing ceramic crowns. Methods: Cervical margins of human molars were designed as circular chamfers. Cementation of full-contour ceramic crowns was conducted with zinc-phosphate cement (Harvard cement), resin cement (Panavia F 2.0) and self-adhesive resin cements (RelyX Unicem, BifixSE, MaxCem Elite, PermaCem2.0, G-Cem). Aging of specimens was performed in artificial saliva, at 37 °C for four weeks and thermocycling. The marginal gap was measured with a scanning electron microscope and silver precipitation within the microleakage. All data were compared statistically. Results: Independent of the margin preparation, the highest median value for microleakage was 320.2 μm (Harvard cement), and the lowest was 0 μm (Panavia F 2.0). The median value for enamel was 0 µm and for dentin 270.9 μm (p < 0.001), which was independent of the luting material. The marginal and absolute marginal gaps were not significantly different between the tested materials. There was no correlation between microleakage and the marginal gaps. Conclusion: Significant differences in microleakage were found between the tested luting materials (p < 0.05). Independent from the luting materials, the microleakage in dentin showed significantly higher values than in enamel.

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“…An in vivo SEM study found that clinically acceptable margins were from 7 to 65 lm (7). However, gaps of <80 lm were proven to be very difficult to detect clinically (8), and several authors have considered that marginal discrepancies between 100 and 150 lm are clinically acceptable (9)(10)(11)(12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Fit of zirconia fixed partial denture: a systematic review

Abduo

Lyons

Swain

2010

J of Oral Rehabilitation

202

160

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CAD/CAM, post-sintered milling, straight configuration and shorter span frameworks provided superior results than CAM, pre-sintered milling, curved configuration and longer span frameworks. Veneering zirconia frameworks caused deterioration in fit, while ageing of zirconia had no implications on the fit. Further studies are needed to determine the clinical significance of the differences in the accuracy reported in this review.

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Film thickness and fluidity of various luting cements determined using a trial indentation meter

Cited by 11 publications

References 9 publications

Influence of two different cement space settings and three different cement types on the fit of polymer-infiltrated ceramic network material crowns manufactured using a complete digital workflow

Influence of two different cement space settings and three different cement types on the fit of polymer-infiltrated ceramic network material crowns manufactured using a complete digital workflow

Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns

Fit of zirconia fixed partial denture: a systematic review

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