Damage tolerance of indirect restorative materials (including PICN) after simulated bur adjustments

Coldea, Andrea; Fischer, Jens; Swain, Michael V.; Thiel, Norbert

doi:10.1016/j.dental.2015.03.007

Cited by 85 publications

(67 citation statements)

References 29 publications

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“…However, those scaffolds could function as 3-dimensional network preforms for polymer infiltration and preparation of double-network composite blocks for CAD-CAM. Polymer-based composites with interpenetrating phases, which are characterized by porous 3-dimensional ceramic scaffolds infiltrated by a polymer matrix, have recently drawn attention in the literature and shown promising results (He and Swain 2011;Coldea et al 2013;Nguyen et al 2013;Coldea et al 2014;Della Bona et al 2014;Nguyen et al 2014;Okada et al 2014;Coldea et al 2015). However, the use of crystalline nonsilicate particles has not yet been tested for the development of such materials.…”

Section: Resultsmentioning

confidence: 99%

Silica Coating of Nonsilicate Nanoparticles for Resin-Based Composite Materials

et al. 2016

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A supplemental appendix to this article is published electronically only at http://jdr.sagepub.com/supplemental. AbstractThis study was designed to develop and characterize a silica-coating method for crystalline nonsilicate ceramic nanoparticles (Al 2 O 3 , TiO 2 , and ZrO 2 ). The hypothesis was that the coated nonsilicate nanoparticles would stably reinforce a polymeric matrix due to effective silanation. Silica coating was applied via a sol-gel method, with tetraethyl orthosilicate as a silica precursor, followed by heat treatment. The chemical and microstructural characteristics of the nanopowders were evaluated before and after silica coating through x-ray diffraction, BET (Brunauer-Emmett-Teller), energy-dispersive x-ray spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy analyses. Coated and noncoated nanoparticles were silanated before preparation of hybrid composites, which contained glass microparticles in addition to the nanoparticles. The composites were mechanically tested in 4-point bending mode after aging (10,000 thermal cycles). Results of all chemical and microstructural analyses confirmed the successful obtaining of silica-coated nanoparticles. Two distinct aspects were observed depending on the type of nanoparticle tested: 1) formation of a silica shell on the surface of the particles and 2) nanoparticle clusters embedded into a silica matrix. The aged hybrid composites formulated with the coated nanoparticles showed improved flexural strength (10% to 30% higher) and work of fracture (35% to 40% higher) as compared with composites formulated with noncoated nanoparticles. The tested hypothesis was confirmed: silanated silica-coated nonsilicate nanoparticles yielded stable reinforcement of dimethacrylate polymeric matrix due to effective silanation. The silica-coating method presented here is a versatile and promising novel strategy for the use of crystalline nonsilicate ceramics as a reinforcing phase of polymeric composite biomaterials.

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Section: Resultsmentioning

confidence: 99%

Silica Coating of Nonsilicate Nanoparticles for Resin-Based Composite Materials

et al. 2016

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“…Evidences on the mechanical properties of PICN and their comparisons with other restorative materials are controversial, mostly when flexural strength was evaluated . ‐ …”

Section: Mechanical and Adhesive Propertiesmentioning

confidence: 99%

A literature review on the new polymer‐infiltrated ceramic‐network material (PICN)

Facenda

Borba

Corazza

2018

J Esthet Restor Dent

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“…54,60,73 A study evaluated the damage tolerance of different dental materials and showed that the damage tolerance of PICN was higher when compared to other ceramics for CAD-CAM, like veneering ceramics. 55,73 With respect to optical properties, the shrinkage of the curing resin results in interfacial stresses occurring between the ceramic framework and the polymer resulting in debonding and leading to a higher opacity because of the gaps developed at the interface. The selection of resin, the application of high pressure during the curing phase, and the silanization process enhanced bonding and helped overcoming the aesthetic problems by increasing the translucency of the material.…”

Section: Polymer Infiltrated Ceramic Network (Picns)mentioning

confidence: 99%

“…54,55 Although CAD-CAM systems were developed initially for the production of ceramic restorations, pre-polymerized resin composites blocks have also been developed to be used with these systems. One of the first resin composites developed as a CAD-CAM block was Paradigm TM (3M TM , St Paul, USA), which was considered a fast-milling and wear-friendly alternative to the use of ceramics.…”

Section: Polymer Infiltrated Ceramic Network (Picns)mentioning

confidence: 99%

Dental ceramics: a review of new materials and processing methods

et al. 2017

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The evolution of computerized systems for the production of dental restorations associated to the development of novel microstructures for ceramic materials has caused an important change in the clinical workflow for dentists and technicians, as well as in the treatment options offered to patients. New microstructures have also been developed by the industry in order to offer ceramic and composite materials with optimized properties, i.e., good mechanical properties, appropriate wear behavior and acceptable aesthetic characteristics. The objective of this literature review is to discuss the main advantages and disadvantages of the new ceramic systems and processing methods. The manuscript is divided in five parts: I) monolithic zirconia restorations; II) multilayered dental prostheses; III) new glass-ceramics; IV) polymer infiltrated ceramics; and V) novel processing technologies. Dental ceramics and processing technologies have evolved significantly in the past ten years, with most of the evolution being related to new microstructures and CAD-CAM methods. In addition, a trend towards the use of monolithic restorations has changed the way clinicians produce all-ceramic dental prostheses, since the more aesthetic multilayered restorations unfortunately are more prone to chipping or delamination. Composite materials processed via CAD-CAM have become an interesting option, as they have intermediate properties between ceramics and polymers and are more easily milled and polished.

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Damage tolerance of indirect restorative materials (including PICN) after simulated bur adjustments

Cited by 85 publications

References 29 publications

Silica Coating of Nonsilicate Nanoparticles for Resin-Based Composite Materials

Silica Coating of Nonsilicate Nanoparticles for Resin-Based Composite Materials

A literature review on the new polymer‐infiltrated ceramic‐network material (PICN)

Dental ceramics: a review of new materials and processing methods

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