High-temperature-pressure Polymerized Resin-infiltrated Ceramic Networks

Nguyen, Jean‐François; Ruse, N. Dorin; Phan, Anh Chi; Sadoun, Michaël

doi:10.1177/0022034513511972

Cited by 108 publications

(85 citation statements)

References 26 publications

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“…Although the hypothesis that CAD/CAM-fabricated dentures should therefore release less monomer [4, 5] is conclusive, scientific evidences regarding monomer release from CAD/CAM-fabricated prostheses are missing so far.…”

Section: Introductionmentioning

confidence: 99%

Do CAD/CAM dentures really release less monomer than conventional dentures?

et al. 2016

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ObjectivesComputer-aided design (CAD)/computer-aided manufacturing (CAM) dentures are assumed to have more favourable material properties than conventionally fabricated dentures, among them a lower methacrylate monomer release. The aim of this study was to test this hypothesis.Materials and methodsCAD/CAM dentures were generated from ten different master casts by using four different CAD/CAM systems. Conventional, heat-polymerised dentures served as control group. Denture weight and volume were measured; the density was calculated, and the denture surface area was assessed digitally. The monomer release after 7 days of water storage was measured by high-performance liquid chromatography.ResultsWhole You Nexteeth and Wieland Digital Dentures had significantly lower mean volume and weight than conventional dentures. Baltic Denture System and Whole You Nexteeth had a significantly increased density. Baltic Denture System had a significantly smaller surface area. None of the CAD/CAM dentures released significantly less monomer than the control group.ConclusionsAll tested dentures released very low amounts of methacrylate monomer, but not significantly less than conventional dentures. A statistically significant difference might nevertheless exist in comparison to other, less recommendable denture base materials, such as the frequently used autopolymerising resins.Clinical relevanceCAD/CAM denture fabrication has numerous advantages. It enables the fabrication of dentures with lower resin volume and lower denture weight. Both could increase the patient comfort. Dentures with higher density might exhibit more favourable mechanical properties. The hypothesis that CAD/CAM dentures release less monomer than conventional dentures could, however, not be verified.

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Section: Introductionmentioning

confidence: 99%

Do CAD/CAM dentures really release less monomer than conventional dentures?

et al. 2016

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“…A lot of attention has been drawn to developing and improving PICN materials since the release of ENAMIC in 2013 [10,12–16]. A comprehensive review of this class of materials has been recently published by Swain and collaborators [17].…”

Section: Introductionmentioning

confidence: 99%

Polymer infiltrated ceramic network structures for resistance to fatigue fracture and wear

et al. 2016

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Objective To investigate fatigue fracture resistance and wear behavior of a polymer infiltrated ceramic network (PICN) material (ENAMIC, Vita Zahnfabrik). Methods Anatomically shaped ENAMIC monolithic crowns were milled using a CAD/CAM system. The crowns were cemented on aged dentin-like composite abutments (Z100, 3M ESPE) with resin-based cement (Vita DUO Cement, Vita). The specimens were subjected to 2 types of fatigue and wear tests: (1) accelerated sliding-contact mouth-motion step-stress fatigue test (n = 24) in water; and (2) long-term sliding-contact mouth-motion fatigue/wear test using a clinically relevant load (P = 200 N, n = 8) in water. Failure was designated as chip-off or bulk fracture. Optical and scanning electron microscopes were used to examine the occlusal surface and subsurface damage, as well as to reveal the material’s microstructure. In addition, wear volume and depth were measured by x-ray micro-computed tomography. Results For accelerated mouth-motion step-stress fatigue testing, 3 out of the 24 ENAMIC crowns fractured following cyclic loading up to 1700 N. Minor occlusal damage and contact-induced cone cracks were observed in all surviving specimens, but no flexural radial cracks were seen. For long-term mouth-motion fatigue/wear testing under a 200 N load in water, a small wear scar without significant cracks was observed in all 8 tested ENAMIC crowns. Significance Monolithic CAD/CAM ENAMIC crowns showed superior resistance to sliding-contact fatigue fracture and wear.

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“…Another report suggested better mechanical properties of polymer-ceramic materials, with less brittleness, better edge stability as well as superior machinability and esthetics [37]. Nguyen et al [38] stated that mechanical properties, including FS, hardness and fracture toughness, were significantly improved in NCRCs using the method of manufacturing pre-polymerized materials under high pressure and high temperature.…”

Section: Discussionmentioning

confidence: 99%

“…These nanoceramic filler particles form 20% of the entire resin composite material and are tightly bound in a highly cross-linked matrix [43]. Nano-scale particles dispersed in the matrix of nanoceramic resin composites revealed better mechanical properties [38,44]. As ceramic particles exist in the form of crystal clusters, available microcracks coalesce into larger cracks, finally weakening the nano-ceramic [45].…”

Section: Discussionmentioning

confidence: 99%