CAD-FEA modeling and analysis of different full crown monolithic restorations
The indication of full crowns in molars is a treatment that mainly aims to restore masticatory function due to the magnitude of the occlusal forces present in this region [1]. Noble metallic crowns considered as the gold standard have been widely used [2 –5]. However, with the aesthetic improvement of restorative materials and the possibility of using dental ceramics instead of metals for the same indication, metallic crowns have lost their popularity. In order to minimize the occurrence of failures of the covering ceramics in both metal-ceramic c rowns and full ceramic crowns [4,6], ceramic materials were developed with...
Source: Dental Materials - June 19, 2018 Category: Materials Science Authors: Amanda Maria de Oliveira Dal Piva, Jo ão Paulo Mendes Tribst, Alexandre Luiz Souto Borges, Rodrigo Othávio de Assunção e Souza, Marco Antonio Bottino Source Type: research
Development of an oxirane/acrylate interpenetrating polymer network (IPN) resin system
Develop a hydrophobic, degradation-resistant dental restorative based on an Oxirane-Acrylate IPN System (OASys) with low shrinkage-stress to substantially extend clinical lifetime. (Source: Dental Materials)
Source: Dental Materials - June 18, 2018 Category: Materials Science Authors: Robert Danso, Blake Hoedebecke, Kyumin Whang, Shayda Sarrami, Allen Johnston, Sam Flipse, Nancy Wong, H. Ralph Rawls Source Type: research
Niobium addition to sol-gel derived bioactive glass powders and scaffolds: In vitro characterization and effect on pre-osteoblastic cell behavior
Bioactive glasses are synthetic biocompatible materials that are able to interact with host tissue due to ion release when in contact with living tissues. Both composition and microstructure of glasses are important for its ability to promote bone deposition [1]. Sol –gel route has been used as an easier and successful route to produce both bioactive glass powders [2] and porous tridimensional structures [3]. Bioactive glass powder synthetized by sol–gel route results in particles with superficial porosity and high surface area, while gel cast foaming has be en shown to produce scaffolds with controlled porosity and po...
Source: Dental Materials - June 18, 2018 Category: Materials Science Authors: Gabriela de Souza Balbinot, Fabricio Mezzomo Collares, Fernanda Visioli, Priscilla Barbosa Ferreira Soares, Antonio Shigueaki Takimi, Susana Maria Werner Samuel, Vicente Castelo Braco Leitune Source Type: research
The influence of precursor addition order on the porosity of sol –gel bioactive glasses
Bioactive glasses are well known materials researched for their application in bone and dental restoration/regeneration [1 –5]. Thanks to the addition of dopants such as copper, zinc, strontium and magnesium to bioactive glasses, their potential for angiogenesis [6], enhanced antibacterial effects [7] and improved bioactivity [8–11] has been unveiled. Due to their impressive bioactivity and bone bonding ability bioa ctive glasses are used in clinical applications as bone graft, implant coating [12,13] and recently in dentifrices such as Sensodyne® and BioMin™ to treat dentin hypersensitivity and induce remineralizat...
Source: Dental Materials - June 16, 2018 Category: Materials Science Authors: Delihta Fernando, Pierre Colon, Mark Cresswell, Catherine Journet, Nelly Pradelle-Plasse, Phil Jackson, Brigitte Grosgogeat, Nina Attik Source Type: research
Fatigue lifetime prediction of a reduced-diameter dental implant system: Numerical and experimental study
In recent decades, dental implants have been widely used as an effective method to replace missing teeth and improve the patient ’s quality of life. According to the facts and figures provided by the American Academy of Implant Dentistry, over 5.5 million dental implants had been placed by United States dentists as of 2006. Although most of the clinical studies reported overall five-year success rates of 93%–97% for denta l implants, biological and technical complications are still frequently observed [1–5]. (Source: Dental Materials)
Source: Dental Materials - June 16, 2018 Category: Materials Science Authors: Yuanyuan Duan, Jorge A. Gonzalez, Pratim A. Kulkarni, William W. Nagy, Jason A. Griggs Source Type: research
Bonding to caries affected dentine
Carious dentin consists of two distinct layers: an outer bacterially infected layer of dentine, and an inner layer of affected dentine [1]. The caries-infected layer (CID) is highly demineralized, physiologically unremineralizable and contains irreversibly denatured collagen fibrils with a virtual disappearance of cross-linkages [2,3]. On the other hand, the caries-affected layer (CAD) is uninfected, partially demineralized and physiologically remineralizable [2 –4]. High porosity and exposure of collagen fibers along with a decrease in the surface energy are seen in the inter-tubular CAD [2–4]. (Source: Dental Materials)
Source: Dental Materials - June 8, 2018 Category: Materials Science Authors: Naghmeh Meraji, Mohammad H. Nekoofar, Kazem Ashofteh Yazdi, Mohammad Reza Sharifian, Noushin Fakhari, Josette Camilleri Source Type: research
Modal analysis for implant stability assessment: Sensitivity of this methodology for different implant designs
To investigate the influence of implant design on the change in the natural frequency of bone-implant system during osseointegration by means of a modal 3D finite element analysis. (Source: Dental Materials)
Source: Dental Materials - June 8, 2018 Category: Materials Science Authors: Elisabetta Maria Zanetti, Stefano Ciaramella, Michele Cal ì, Giulia Pascoletti, Massimo Martorelli, Riccardo Asero, David C. Watts Source Type: research
Editorial Board
(Source: Dental Materials)
Source: Dental Materials - June 6, 2018 Category: Materials Science Source Type: research
Investigating the limits of resin-based luting composite photopolymerization through various thicknesses of indirect restorative materials
To determine the limitations of using light-curable resin-based luting composites (RBLCs) to bond indirect ceramic/resin-composite restorations by measuring light transmittance through indirect restorative materials and the resulting degree of conversion (DC) of the luting-composites placed underneath. (Source: Dental Materials)
Source: Dental Materials - May 29, 2018 Category: Materials Science Authors: C.M.F. Hardy, S. Bebelman, G. Leloup, M.A. Hadis, W.M. Palin, J.G. Leprince Source Type: research
Modification of the restoration protocol for resin-based composite (RBC) restoratives (conventional and bulk fill) on cuspal movement and microleakage score in molar teeth
To modify the resin-based composite (RBC) restoration protocol for standardised Class II cavities in third molar teeth restored using conventional RBCs or their bulk fill restorative counterparts. Employing cuspal deflection using a twin channel deflection measuring gauge (during) and microleakage to determine marginal integrity (following) RBC restoration, the modified restoration protocol results were compared with traditional (oblique) restoration of Class II cavities. (Source: Dental Materials)
Source: Dental Materials - May 29, 2018 Category: Materials Science Authors: I. Politi, L.E.J. McHugh, R.S. Al-Fodeh, G.J.P. Fleming Source Type: research
Internal adjustments decrease the fatigue failure load of bonded simplified lithium disilicate restorations
Monolithic restorations present great advantages when compared to bilayer ceramic systems due to fewer steps in the fabrication process, and the absent susceptibility to chipping [1]. In addition, lithium disilicate glass-ceramics stand out for combining satisfactory aesthetic and mechanical properties among ceramic materials available to produce monolithic restorations [2]. Lithium disilicate ceramic is indicated to produce inlays, onlays, anterior and posterior single crowns and three-unit bridges (up to the second premolar) [3]. (Source: Dental Materials)
Source: Dental Materials - May 28, 2018 Category: Materials Science Authors: Camila da Silva Rodrigues, Lu ís Felipe Guilardi, Andressa Cargnelutti Follak, Catina Prochnow, Liliana Gressler May, Luiz Felipe Valandro Source Type: research
The effect of desiccation on water sorption, solubility and hygroscopic volumetric expansion of dentine replacement materials
To evaluate water sorption, solubility and hygroscopic expansion and the effect of desiccation for a calcium silicate-based material, a conventional glass ionomer, and a resin-modified glass ionomer. (Source: Dental Materials)
Source: Dental Materials - May 24, 2018 Category: Materials Science Authors: Ruba Mustafa, Ruwaida Z. Alshali, Nick Silikas Source Type: research
Structure –properties relationships in dental adhesives: Effect of initiator, matrix monomer structure, and nano-filler incorporation
This is a confirmatory study to evaluate the effect of photoinitiator type and concentration, matrix monomer chemical structure, and nanoparticle incorporation on the physical and mechanical properties of an experimental dentin bonding agent. (Source: Dental Materials)
Source: Dental Materials - May 22, 2018 Category: Materials Science Authors: Elham Azad, Mohammad Atai, Mojgan Zandi, Parvin Shokrollahi, Laleh Solhi Source Type: research
Effect of light curing units on the polymerization of bulk fill resin-based composites
The manufacturers of bulk fill resin-based composites (RBCs) claim that it possible to successfully photo-cure 4 or even 5-mm increments of RBC instead of the customary 2mm increment. While this approach may introduce less voids between each increment and reduce overall treatment times, the ability to adequately photo-cure such a large volume of RBC in one exposure is a concern. (Source: Dental Materials)
Source: Dental Materials - May 22, 2018 Category: Materials Science Authors: Carlos Alberto Kenji Shimokawa, M íriam Lacalle Turbino, Marcelo Giannini, Roberto Ruggiero Braga, Richard Bengt Price Source Type: research
Biaxial flexural strength of the bilayered disk composed of ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/A) and veneering porcelain
For dental fixed prostheses, modern patients are prone to select all-ceramic restorations instead of metal-ceramic restorations due to adequate mechanical properties, esthetic and biocompatibility reasons [1]. In particular, zirconia-based all-ceramic restorations have a wide range of applications from single crowns to long-span fixed partial dentures (FPDs) with their high mechanical strengths [2]. In clinical applications, outstanding development and emergence of a variety of dental computer-aided design/computer-aided manufacturing (CAD/CAM) technologies have made it possible to use two main types of zirconia ceramics; ...
Source: Dental Materials - May 21, 2018 Category: Materials Science Authors: Tomofumi Sawada, Christine Schille, Verena Wagner, Sebastian Spintzyk, Ernst Schweizer, J ürgen Geis-Gerstorfer Source Type: research
