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Optimization of large MOD restorations: Composite resin inlays vs. short fiber-reinforced direct restorations
Techniques for restoring anterior or posterior teeth include direct, semi-direct, semi-indirect and indirect restorations [1]. Large direct restorations present several challenges, especially in the posterior dentition. Mastering of shape, contours and occlusal anatomy/function requires particular skills [2,3]. But it also raises the problem of polymerization shrinkage [4,5]. Contraction stresses challenge the dentin –resin hybrid layer and may result in gap formation and/or decreased dentin bond strength [4,6]. (Source: Dental Materials)
Source: Dental Materials - January 22, 2018 Category: Materials Science Authors: Luciana Mara Soares, Mehrdad Razaghy, Pascal Magne Source Type: research

Mechanical properties and fracture behavior of flowable fiber reinforced composite restorations
The aim was to evaluate the effect of short glass-fiber/filler particles proportion on fracture toughness (FT) and flexural strength (FS) of an experimental flowable fiber-reinforced composite (Exp-SFRC) with two methacrylate resin formulations. In addition, we wanted to investigate how the fracture-behavior of composite restorations affected by FT values of SFRC-substructure. (Source: Dental Materials)
Source: Dental Materials - January 22, 2018 Category: Materials Science Authors: Lippo Lassila, Filip Keulemans, Eija S äilynoja, Pekka K. Vallittu, Sufyan Garoushi Source Type: research

Strength and fracture toughness of zirconia dental ceramics
Before examining the strength and fracture toughness of dental ceramics, some basic concepts of fracture mechanics, strength and testing of ceramic materials are introduced in this section. (Source: Dental Materials)
Source: Dental Materials - January 21, 2018 Category: Materials Science Authors: Miquel Turon-Vinas, Marc Anglada Source Type: research

In memoriam of Professor David B. Mahler (1923 –2017)
Dr. David B. Mahler, Professor Emeritus in the Division of Biomaterials and Biomechanics and Department of Restorative Dentistry at the Oregon Health& Science University, Portland, OR, died August 2, 2017 at the age of 94. (Source: Dental Materials)
Source: Dental Materials - January 18, 2018 Category: Materials Science Tags: Obituary Source Type: research

Wear of polyetherketoneketones — Influence of titanium dioxide content and antagonistic material
The aim of this laboratory study was to analyze the influence of titanium dioxide (TiO2) content and antagonistic material on the wear of polyetherketoneketones (PEKKs). (Source: Dental Materials)
Source: Dental Materials - January 18, 2018 Category: Materials Science Authors: Thomas Kewekordes, Sebastian Wille, Matthias Kern Source Type: research

Genotoxic and mutagenic potential of camphorquinone in L5178/TK+/ − mouse lymphoma cells
Camphorquinone (CQ) is the most important photoinitiator used in dental composite resins. Sparse data indicate a mutagenic potential of CQ. Therefore, it was aim of this study to evaluate the cytotoxicity, genotoxicity, and mutagenicity of CQ in L5178Y TK+/ − mouse lymphoma cells. (Source: Dental Materials)
Source: Dental Materials - January 18, 2018 Category: Materials Science Authors: J. Volk, C. Ziemann, G. Leyhausen, W. Geurtsen Source Type: research

In-vitro wear of natural tooth surface opposed with zirconia reinforced lithium silicate glass ceramic after accelerated ageing
Dental ceramics are generally considered chemically inert restorative materials. However, many factors may influence the durability of dental ceramics. Different ceramic compositions and microstructures are exposed to different environmental factors such as the presence of erosive or acidic agents. The latter are caused by ingestion of certain fruits or beverages, inhalation of industrial acidic fumes or gastric juice regurgitated into the oral cavity as in the case of bulimia and anorexia nervosa. (Source: Dental Materials)
Source: Dental Materials - January 18, 2018 Category: Materials Science Authors: Salma M. Fathy, Michael V. Swain Source Type: research

Crystallographic and morphological analysis of sandblasted highly translucent dental zirconia
Zirconia-based restorations are now frequently applied in dentistry, thanks to their esthetics, biocompatible properties, easier and even cheaper fabrication as compared to the conventional porcelain-fused-to-metal (PFM) restorations [1,2]. Since 2014, more esthetic highly-translucent zirconia has been introduced into dentistry. According to Makhija et al., full-contour restorations made by highly translucent zirconia are becoming the first choice to restore posterior teeth in the US [3]. (Source: Dental Materials)
Source: Dental Materials - January 8, 2018 Category: Materials Science Authors: Masanao Inokoshi, Haruki Shimizu, Kosuke Nozaki, Tomohiro Takagaki, Kumiko Yoshihara, Noriyuki Nagaoka, Fei Zhang, Jozef Vleugels, Bart Van Meerbeek, Shunsuke Minakuchi Source Type: research

Precision of 655nm Confocal Laser Profilometry for 3D surface texture characterisation of natural human enamel undergoing dietary acid mediated erosive wear
Human enamel has a complex hierarchal microstructure, constituting 96% mineral, 3% water and 1% organic protein [1]. The mineral content is a hydroxyapatite, sometimes referred to as a calcium deficient hydroxyapatite (HA) due to the constant dynamic flux of metal ions occurring with the oral environment [2,3]. Prior to tooth eruption, secretory ameloblasts form the fundamental microstructural unit of enamel. The enamel rod or prism, runs from the edge of the inner dentine to the outer enamel surface, having only 3 –7μm diameter whilst up to 4mm length, with each prism interlocked by an organic protein complex [1,...
Source: Dental Materials - January 6, 2018 Category: Materials Science Authors: F. Mullan, P. Mylonas, C. Parkinson, D. Bartlett, R.S. Austin Source Type: research

Development of layered PLGA membranes for periodontal tissue regeneration
Guided tissue regeneration (GTR) is a clinical approach for periodontal tissue regeneration by guiding periodontal ligament-derived cells and osteoblasts following application of a barrier membrane to the periodontal tissue defect [1,2]. The membranes used in GTR therapy are classified into two types: biodegradable (including animal origin constituents [3 –5] and polylactic acid (PLA) [6–8]) and non-biodegradable (including polytetrafluoroethylene (PTFE) and titanium) [9–11]. (Source: Dental Materials)
Source: Dental Materials - January 5, 2018 Category: Materials Science Authors: Itsumi Yoshimoto, Jun-Ichi Sasaki, Ririko Tsuboi, Satoshi Yamaguchi, Haruaki Kitagawa, Satoshi Imazato Source Type: research

Modulation of gingival cell response towards dental composites
This aim of this study was to investigate the cell behavioural response on clinically applied dental composites in exposition-relevant target cells, i.e. human gingival fibroblasts (HGF) and epithelial keratinocytes (HGK). (Source: Dental Materials)
Source: Dental Materials - January 3, 2018 Category: Materials Science Authors: A. Jerg, S.D. Schulz, P. Tomakidi, E. Hellwig, O. Polydorou Source Type: research

Influence of a surface conditioner to pre-sintered zirconia on the biaxial flexural strength and phase transformation
Zirconia ceramic is one of the most promising materials for metal-free restorations because of its excellent mechanical properties and reasonable esthetics [1]. Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is used as a framework substrate and a monolithic material in all-ceramic dental restorations [1 –3]. Zirconia exists in three different crystalline phases according to the temperature: monoclinic (up to 1170°C), tetragonal (1170°C–2370°C), and cubic (above 2370°C) [4]. Y-TZP, which comprises tetragonal zirconia particles and Y2O3 added as a stabilizer, can exist at room temperatu...
Source: Dental Materials - January 1, 2018 Category: Materials Science Authors: Tomofumi Sawada, Christine Schille, Judit Z öldföldi, Ernst Schweizer, Jürgen Geis-Gerstorfer, Sebastian Spintzyk Source Type: research

Release of ICTP and CTX telopeptides from demineralized dentin matrices: Effect of time, mass and surface area
The present study evaluated the influence of time, mass and surface area of demineralized dentin collagen matrices on telopeptides release. The hypotheses tested were that the rates of ICTP and CTX release by matrix bound endogenous proteases are 1) not time-dependent, 2) unrelated to specimen mass, 3) unrelated to specimen surface area. (Source: Dental Materials)
Source: Dental Materials - January 1, 2018 Category: Materials Science Authors: Gianluca Turco, Milena Cadenaro, Tatjana Maravi ć, Andrea Frassetto, Eleonora Marsich, Annalisa Mazzoni, Roberto Di Lenarda, Franklin R. Tay, David H. Pashley, Lorenzo Breschi Source Type: research

Development of radiopaque, biocompatible, antimicrobial, micro-particle fillers for micro-CT imaging of simulated periodontal pockets
Periodontitis (PD) is an inflammatory disease of bacterial origin that can culminate in tooth loss [1,2]. PD is also associated with multiple systemic diseases, such as cardiovascular diseases, diabetes mellitus, cancer, and Alzheimer ’s diseases [3]. Indeed, nearly 50% of the U.S. population is affected by PD [4]. (Source: Dental Materials)
Source: Dental Materials - December 26, 2017 Category: Materials Science Authors: M. Elashiry, M.M. Meghil, S. Kalathingal, A. Buchanan, M. Rajendran, R. Elrefai, M. Ochieng, A. Elawady, R.M. Arce, K.H. Sandhage, C.W. Cutler Source Type: research

An evaluation of the biocompatibility and osseointegration of novel glass fiber reinforced composite implants: In vitro and in vivo studies
Dental implant therapy is a well-accepted treatment modality for the replacement of missing teeth; while, in addition, metallic fracture fixation devices have been accepted as a useful system for orthopedic rehabilitation [1,2]. Traditional metal biomaterials, such as commercial pure titanium and titanium alloy (Ti6Al4V), are widely used in dental and orthopedic applications because of their desirable mechanical properties, their chemical stability and their biocompatibility [3,4]. However, there have been some concerns associated with the use of these metal devices related to potential metal ion release, metal allergy, ra...
Source: Dental Materials - December 26, 2017 Category: Materials Science Authors: Ya-Hui Chan, Wei-Zhen Lew, Emily Lu, Thomas Loretz, Luke Lu, Che-Tong Lin, Sheng-Wei Feng Source Type: research

Editorial Board
(Source: Dental Materials)
Source: Dental Materials - December 22, 2017 Category: Materials Science Source Type: research

The anti-caries effects of dental adhesive resin influenced by the position of functional groups in quaternary ammonium monomers
Adhesive systems and resin composites are widely used in direct dental restoration due to esthetics and improved properties [1 –3]. However, the failure of composite restorations is still a major problem. The failure rate ranges from 15% to 50% according to previous survival investigation [4–6]. Replacement dentistry accounts for more than 50% of all the restorations performed, and costs more than $5 billion annually in the U.S [7–9]. The main reasons for the failure are secondary caries and bulk fraction [10–13]. (Source: Dental Materials)
Source: Dental Materials - December 18, 2017 Category: Materials Science Authors: Jingou Liang, Mingyun Li, Biao Ren, Tianmu Wu, Hockin H.K. Xu, Yong Liu, Xian Peng, Ge Yang, Michael D. Weir, Shiyong Zhang, Lei Cheng, Xuedong Zhou Source Type: research

Residual stress of porcelain-fused to zirconia 3-unit fixed dental prostheses measured by nanoindentation
To evaluate the residual stress (nanoindentation based on hardness) of fatigued porcelain-fused to zirconia 3-unit fixed dental prostheses (FDP) with different framework designs. (Source: Dental Materials)
Source: Dental Materials - December 16, 2017 Category: Materials Science Authors: Vinicius P. Fardin, Estevam A. Bonfante, Paulo G. Coelho, Malvin N. Janal, Nick Tovar, Lukasz Witek, Dimorvan Bordin, Gerson Bonfante Source Type: research

Effect of tetracalcium phosphate/monetite toothpaste on dentin remineralization and tubule occlusion in vitro
To investigate the tubule occlusion and remineralization potential of a novel toothpaste with active tetracalcium phosphate/monetite mixtures under de/remineralization cycling. (Source: Dental Materials)
Source: Dental Materials - December 9, 2017 Category: Materials Science Authors: L. Medvecky, R. Stulajterova, M. Giretova, J. Mincik, M. Vojtko, J. Balko, J. Briancin Source Type: research

Smear layer-deproteinizing improves bonding of one-step self-etch adhesives to dentin
This study aimed to investigate those effects on various one-step self-etch adhesives. (Source: Dental Materials)
Source: Dental Materials - December 9, 2017 Category: Materials Science Authors: Ornnicha Thanatvarakorn, Taweesak Prasansuttiporn, Suppason Thittaweerat, Richard M. Foxton, Shizuko Ichinose, Junji Tagami, Keiichi Hosaka, Masatoshi Nakajima Source Type: research

Long-term stability of dental adhesive incorporated by boron nitride nanotubes
Adhesive dentistry has advanced significantly over the past ten years, although premature reductions in bond strength, interface and marginal degradation, and biocompatibility of adhesives still pose challenge to the field [1]. These issues may occur due to the presence of non-entangled exposed collagen fibrils in the partially or completely demineralized dentin, after the etching step from acids or acidic resin monomers [2]. The incomplete monomer infiltration into the collagen matrix leads to the presence of mineral-depleted, resin-sparse, water-rich fibrils along the bonded interface challenging the interfacial integrit...
Source: Dental Materials - December 4, 2017 Category: Materials Science Authors: Felipe Weidenbach Degrazia, Vicente Castelo Branco Leitune, Fernanda Visioli, Susana Maria Werner Samuel, Fabr ício Mezzomo Collares Source Type: research

Bonding strategies for MIH-affected enamel and dentin
Aim of the present study was to evaluate resin composite adhesion to dental hard tissues affected by molar incisor hypomineralisation (MIH). (Source: Dental Materials)
Source: Dental Materials - December 2, 2017 Category: Materials Science Authors: Norbert Kr ämer, Ngoc-Han Nana Bui Khac, Susanne Lücker, Vitus Stachniss, Roland Frankenberger Source Type: research

Practical and theoretical considerations on the fracture toughness testing of dental restorative materials
An important tool in materials research, development and characterization regarding mechanical performance is the testing of fracture toughness. A high level of accuracy in executing this sort of test is necessary, with strict requirements given in extensive testing standard documents. Proficiency in quality specimen fabrication and test requires practice and a solid theoretical background, oftentimes overlooked in the dental community. Aims: In this review we go through some fundamentals of the fracture mechanics concepts that are relevant to the understanding of fracture toughness testing, and draw attention to critical ...
Source: Dental Materials - December 1, 2017 Category: Materials Science Authors: Renan Belli, Michael Wendler, Jos é I. Zorzin, Ulrich Lohbauer Source Type: research

Can pulpal floor debonding be detected from occlusal surface displacement in composite restorations?
Polymerization shrinkage of resin composite restorations can cause debonding at the tooth –restoration interface. Theory based on the mechanics of materials predicts that debonding at the pulpal floor would half the shrinkage displacement at the occlusal surface. The aim of this study is to test this theory and to examine the possibility of detecting subsurface resin composite restorat ion debonding by measuring the superficial shrinkage displacements. (Source: Dental Materials)
Source: Dental Materials - November 30, 2017 Category: Materials Science Authors: Jo ão Batista Novaes, Elissa Talma, Estevam Barbosa Las Casas, Wondwosen Aregawi, Lauren Wickham Kolstad, Sue Mantell, Yan Wang, Alex Fok Source Type: research

Characterization, mechanistic analysis and improving the properties of denture adhesives
The objective of this study was to understand the effect of environmental conditions on the adhesion properties of a commercially available denture adhesive named as Poligrip ® Free manufactured by GlaxoSmithKline Ltd., UK and to identify the reasons for the observed variation in its adhesion strength. (Source: Dental Materials)
Source: Dental Materials - November 30, 2017 Category: Materials Science Authors: Afsoon Fallahi, Nona Khadivi, Nima Roohpour, Andrew M. Middleton, Mehdi Kazemzadeh-Narbat, Nasim Annabi, Ali Khademhosseini, Ali Tamayol Source Type: research

Photopolymerization of cell-laden gelatin methacryloyl hydrogels using a dental curing light for regenerative dentistry
Tissue engineering and regenerative medicine consist of delivering cells and bioactive agents (i.e. growth factors, nucleic acids) to injured sites to promote and restore tissue function [1 –3]. Hydrogels, which are highly hydrated natural and synthetic biomaterials that closely replicate the structural and biological characteristics of the native extracellular matrix (ECM), have long been proposed as ideal candidates for cell delivery in regenerative medicine and dentistry [4]. Thei r characteristics, such as biocompatibility, biodegradability, tunable physical and chemical properties, and ease of fabrication, have ...
Source: Dental Materials - November 30, 2017 Category: Materials Science Authors: Nelson Monteiro, Greeshma Thrivikraman, Avathamsa Athirasala, Anthony Tahayeri, Cristiane M. Fran ça, Jack L. Ferracane, Luiz E. Bertassoni Source Type: research

Editorial Board
(Source: Dental Materials)
Source: Dental Materials - November 26, 2017 Category: Materials Science Source Type: research

Effect of titania content and biomimetic coating on the mechanical properties of the Y-TZP/TiO2 composite
Dental treatments involving implant-supported prostheses not only result in the complete oral rehabilitation of edentulous patients, but also cause an improvement of their psychosocial characteristics [1]. The success of an implant can be affected by several factors, such as diameter, length, surgical technique, patient health and habits [2]. The most commonly used biomaterial to replace the dental root is titanium (commercially pure titanium or titanium alloy, Ti –6Al–4V), which has excellent biocompatibility and high mechanical properties [3]. (Source: Dental Materials)
Source: Dental Materials - November 25, 2017 Category: Materials Science Authors: Ranulfo Benedito de Paula Miranda, Walter Gomes Miranda, Dolores Ribeiro Ricci Lazar, Valter Ussui, Juliana Marchi, Paulo Francisco Cesar Source Type: research

Effects of different sterilization methods on surface characteristics and biofilm formation on zirconia in vitro
The current laboratory study was to investigate the effect of different sterilization treatments on surface characteristics of zirconia, and biofilm formation on zirconia surface after exposure to these sterilization treatments. (Source: Dental Materials)
Source: Dental Materials - November 25, 2017 Category: Materials Science Authors: Aifang Han, James K.H. Tsoi, Jukka P. Matinlinna, Yu Zhang, Zhuofan Chen Source Type: research

Using glass-graded zirconia to increase delamination growth resistance in porcelain/zirconia dental structures
Porcelain fused to zirconia (PFZ) restorations are widely used in prosthetic dentistry. However, their tendency to delaminate along the P/Z interface remains a practical problem so that assessing and improving the interfacial strength are important design aspects. This work examines the effect of modifying the zirconia veneering surface with an in-house felspathic glass on the interfacial fracture resistance of fused P/Z. (Source: Dental Materials)
Source: Dental Materials - November 25, 2017 Category: Materials Science Authors: Herzl Chai, Adam J. Mieleszko, Stephen J. Chu, Yu Zhang Source Type: research

Effect of tribochemical treatments and silane reactivity on resin bonding to zirconia
The aim of the study was to assess the roughness, structure and bond strength with zirconia of four grit-blasting treatments combined with three silane types, the reactivity of which was evaluated, as well. (Source: Dental Materials)
Source: Dental Materials - November 25, 2017 Category: Materials Science Authors: Raphael Pilo, Maria Dimitriadi, Anna Palaghia, George Eliades Source Type: research

Bisphenol A release from an orthodontic resin composite: A GC/MS and LC/MS study
First, to analyse the in vitro release of BPA and Bis-GMA from an orthodontic resin composite (Transbond XT, 3M Unitek), stored in various conditions, by gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS); then to extrapolate the data to the clinical situation. Secondly, to explore the thermal stability of Bis-GMA. (Source: Dental Materials)
Source: Dental Materials - November 25, 2017 Category: Materials Science Authors: Marc Deviot, Isabelle Lachaise, Christof H ögg, Jürgen Durner, Franz-Xaver Reichl, Jean-Pierre Attal, Elisabeth Dursun Source Type: research

An interproximal model to determine the erosion-protective effect of calcium silicate, sodium phosphate, fluoride formulations
Within the oral cavity dental hard tissues are exposed to many factors that could lead to wear and mineral loss [1]. Dietary acids, such as those found in soft drinks, are a very common cause of enamel erosion within the mouth; the most prevalent of which is citric acid [2]. (Source: Dental Materials)
Source: Dental Materials - November 24, 2017 Category: Materials Science Authors: Natalie J. Wood, Si ân Bodfel Jones, Nick Chapman, Andrew Joiner, Carole J. Philpotts, Nicola X. West Source Type: research

Mechanism of bioactive molecular extraction from mineralized dentin by calcium hydroxide and tricalcium silicate cement
Calcium hydroxide (Ca(OH)2) has been used in dentistry since the 1920s [1] and has long been considered the ‘gold standard’ for indirect and direct pulp capping procedures [2]. Tricalcium silicate cements (TSCs), introduced in 1993 as a root repair material [3], have been recommended as coronal seal materials for regenerative endodontic procedures [4], and are gradually replacing Ca(OH)2 as endodontic repair materials for dentinogenesis [2,5]. In retrospective studies, the 5-year success rate after direct pulp capping with Ca(OH)2 ranged from 37% to 82% [6]. (Source: Dental Materials)
Source: Dental Materials - November 24, 2017 Category: Materials Science Authors: Xue-qing Huang, John Camba, Li-sha Gu, Brian E. Bergeron, Domenico Ricucci, David H. Pashley, Franklin R. Tay, Li-na Niu Source Type: research

Cross-linking effect on dentin bond strength and MMPs activity
Currently, adhesive dental restorations are an essential part in everyday dental practice [1]. However, despite evolution of adhesive protocols, the hybrid layer (HL) remains the weakest point of resin –composite restorations. The structure of this connecting layer is responsible for the retention of the resin restorations. However, it is also the most vulnerable area of the adhesive-resin bond [2]. Previous in vitro and in vivo studies revealed that degradation of resin dentin bonds over time i s caused by hydrolytic breakdown of the resin or of dentinal collagen fibrils [3,4], identifying the important contribution...
Source: Dental Materials - November 24, 2017 Category: Materials Science Authors: Annalisa Mazzoni, Valeria Angeloni, Allegra Comba, Tatjana Maravic, Milena Cadenaro, Arzu Tezvergil-Mutluay, David H. Pashley, Franklin R. Tay, Lorenzo Breschi Source Type: research

Dentin bonding systems: From dentin collagen structure to bond preservation and clinical applications
Efforts towards achieving durable resin –dentin bonds have been made for decades, including the understanding of the mechanisms underlying hybrid layer (HL) degradation, manufacturing of improved adhesive systems, as well as developing strategies for the preservation of the HL. (Source: Dental Materials)
Source: Dental Materials - November 24, 2017 Category: Materials Science Authors: Lorenzo Breschi, Tatjana Maravic, Sandra Ribeiro Cunha, Allegra Comba, Milena Cadenaro, Leo Tj äderhane, David H. Pashley, Franklin R. Tay, Annalisa Mazzoni Tags: Review Source Type: research

The effect of chewing simulation on surface roughness of resin composite when opposed by zirconia ceramic and lithium disilicate ceramic
To assess the change in surface roughness of nanohybrid resin composite (Tetric EvoCeram) after antagonist wear against monolithic zirconia and lithium disilicate ceramics through a simulated chewing test using a three-dimensional (3D) profilometer. (Source: Dental Materials)
Source: Dental Materials - November 23, 2017 Category: Materials Science Authors: Ting Khee Ho, Julian D. Satterthwaite, Nikolaos Silikas Source Type: research

Induction of DNA double-strand breaks in human gingival fibroblasts by eluates from titanium dioxide modified glass ionomer cements
Aging is emerging as a key global issue because of the proportion and absolute number of older people in populations around the world are increasing dramatically [1]. An increased aging population also comes with increasing in problems in oral health, including root caries. Strategies in controlling root caries involve with both preventive care and professional intervention. In recent years, high-viscosity glass-ionomer cements (HV-GICs) have been the preferred mode of restoring root caries lesions in the elderly [2]. (Source: Dental Materials)
Source: Dental Materials - November 23, 2017 Category: Materials Science Authors: Arunee Laiteerapong, Franz-Xaver Reichl, Yang Yang, Reinhard Hickel, Christof H Ögg Source Type: research

Hierarchical microcrack model for materials exemplified at enamel
This article investigates the mechanical properties of a material with hierarchically arranged microcracks. (Source: Dental Materials)
Source: Dental Materials - November 23, 2017 Category: Materials Science Authors: H. Özcoban, E.D. Yilmaz, G.A. Schneider Source Type: research

Light irradiance through novel CAD –CAM block materials and degree of conversion of composite cements
To assess light irradiance (LI) delivered by two light-curing units (LCU ’s) and to measure the degree of conversion (DC) of three composite cements, when cured through different thicknesses of two novel CAD–CAM block materials. (Source: Dental Materials)
Source: Dental Materials - November 20, 2017 Category: Materials Science Authors: Diogo Pedrollo Lise, Annelies Van Ende, Jan De Munck, Kumiko Yoshihara, Noriyuki Nagaoka, Luiz Clovis Cardoso Vieira, Bart Van Meerbeek Source Type: research

Influence of different smear layers on bond durability of self-etch adhesives
The purpose of this study was to determine the influence of different smear layers on enamel and dentin bond durability of various types of self-etch adhesives. (Source: Dental Materials)
Source: Dental Materials - November 13, 2017 Category: Materials Science Authors: Toshiki Takamizawa, Wayne W. Barkmeier, Keiichi Sai, Akimasa Tsujimoto, Arisa Imai, Robert L. Erickson, Mark A. Latta, Masashi Miyazaki Source Type: research

Mapping the mechanical gradient of human dentin-enamel-junction at different intratooth locations
As one of the most durable biocomposites found in nature, teeth have become a type of representative biomechanical complex that have been studied extensively in the past decades [1 –3]. The remarkable damage resistance and structural integrity of the tooth crown have been primarily ascribed to its unique bilayer structure composed of the hard, wear-resistant, and highly-mineralized cover-layer enamel and the softer, tough, and less-mineralized core-layer dentin [4,5]. These two layers exhibiting dissimilar mechanical properties for dissimilar functionalities are delicately united by the so-called dentin-enamel-juncti...
Source: Dental Materials - November 11, 2017 Category: Materials Science Authors: Zhengzhi Wang, Kun Wang, Wanyin Xu, Xiaoyu Gong, Feiyu Zhang Source Type: research

Physical and chemical properties of model composites containing quaternary ammonium methacrylates
Investigate physical and chemical properties of model composites formulated with quaternary ammonium salt monomers (QAS) at different concentrations and alkyl chains lengths (Source: Dental Materials)
Source: Dental Materials - November 10, 2017 Category: Materials Science Authors: Marina Lermenn Vidal, Guilherme Ferreira Rego, Gil Mendes Viana, Lucio Mendes Cabral, Juliana Primo Bas ílio Souza, Nick Silikas, Luis Felipe Schneider, Larissa Maria Cavalcante Source Type: research

CAD-FE modeling and analysis of class II restorations incorporating resin-composite, glass ionomer and glass ceramic materials
To investigate the influence of specific resin-composite, glass ceramic and glass ionomer cement (GIC) material combinations in a “multi-layer” technique to replace enamel and dentin in class II mesio-occlusal-distal (MOD) dental restorations using 3D-Finite Element Analysis (FEA). (Source: Dental Materials)
Source: Dental Materials - November 8, 2017 Category: Materials Science Authors: Pietro Ausiello, Stefano Ciaramella, Massimo Martorelli, Antonio Lanzotti, Antonio Gloria, David C. Watts Source Type: research

Mechanical behavior of endodontically restored canine teeth: Effects of ferrule, post material and shape
To assess the effect of a ferrule design with specific post material-shape combinations on the mechanical behavior of post-restored canine teeth. (Source: Dental Materials)
Source: Dental Materials - November 7, 2017 Category: Materials Science Authors: Pietro Ausiello, Stefano Ciaramella, Massimo Martorelli, Antonio Lanzotti, Fernando Zarone, David C. Watts, Antonio Gloria Source Type: research

Osseointegration of zirconia dental implants in animal investigations: A systematic review and meta-analysis
Ceramic dental implants have been commercially available since almost 40 years [1]. Initially made from mono- or polycrystalline aluminum oxide (Al2O3), this bulk material was retired from the market for apparent mechanical weakness resulting in a poor clinical outcome [2]. Nowadays, ceramic dental implants are mainly produced from yttria-stabilized tetragonal zirconia polycrystal (Y-TZP), offering improved fracture toughness and flexural strength [3]. Several clinical investigations addressing the outcome of implants made from Y-TZP have been published in recent years. (Source: Dental Materials)
Source: Dental Materials - November 6, 2017 Category: Materials Science Authors: Stefano Pieralli, Ralf-Joachim Kohal, Emilia Lopez Hernandez, Sam Doerken, Benedikt Christopher Spies Source Type: research

High performance dental resin composites with hydrolytically stable monomers
In modern dentistry, amalgam dental restorations are being phased-out due to safety concerns [1,2]. Meanwhile, resin composite restorations continue gaining popularity for their aesthetic advantages and clinical practicality [3,4]. However, the average service life of the contemporary polymeric restorations is less than eight years. These restorations are typically inundated by frequent fracturing and development of secondary caries [5]. This relatively short service life together with the concerns regarding leachability of the unreacted monomers and degradation products (such as the infamous bisphenol A (BPA) [6,7]) from ...
Source: Dental Materials - November 4, 2017 Category: Materials Science Authors: Xiaohong Wang, George Huyang, Sri Vikram Palagummi, Xiaohui Liu, Drago Skrtic, Carlos Beauchamp, Rafael Bowen, Jirun Sun Source Type: research

3D printed versus conventionally cured provisional crown and bridge dental materials
Rapid and automated prototyping of dental materials and restorations in three dimensions (3D) has had a significant impact in the field of restorative dentistry in recent years [1]. The enormous progress of digital dentistry in the recent decade is undeniable, especially since the advent of CAD/CAM imaging and milling systems, which have literaly created a new modality of clinical dentistry [2]. The most recent wave of technological development in digital dentistry revolves around the field of 3D printing [3]. (Source: Dental Materials)
Source: Dental Materials - October 27, 2017 Category: Materials Science Authors: Anthony Tahayeri, MaryCatherine Morgan, Ana P. Fugolin, Despoina Bompolaki, Avathamsa Athirasala, Carmem S. Pfeifer, Jack L. Ferracane, Luiz E. Bertassoni Source Type: research

Effect of ionizing radiation on properties of restorative materials
To evaluate the effect of ionizing radiation from high energy X-ray on properties of restorative materials. (Source: Dental Materials)
Source: Dental Materials - October 25, 2017 Category: Materials Science Authors: Suzane Boa Nova Brandeburski, Alvaro Della Bona Source Type: research

Flowable composites for restoration of non-carious cervical lesions: Results after five years
Non-carious cervical lesions (NCCLs), which are defined as a loss of dental hard tissue at the cemento-enamel junction, are commonly encountered clinical conditions in dental practice [1]. Prevalence rates have been estimated to be between 2 and 90% and are likely to raise in an ageing population where teeth are increasingly retained for a lifetime [2]. In cases when tooth hypersensitivity occurs, pulp vitality is affected or when plaque retention is promoted, direct restorative treatment of NCCLs may become necessary [3]. (Source: Dental Materials)
Source: Dental Materials - October 25, 2017 Category: Materials Science Authors: Fabian Cieplik, Konstantin J. Scholz, Isabelle Tabenski, Sabine May, Karl-Anton Hiller, Gottfried Schmalz, Wolfgang Buchalla, Marianne Federlin Source Type: research