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Fatigue resistance of dentin bonds prepared with two- vs. three-step adhesives: Effect of carbodiimide
The application of a cross-linker to demineralized dentin is reportedly effective at extending the durability of dentin bonds. (Source: Dental Materials)
Source: Dental Materials - September 21, 2017 Category: Materials Science Authors: Zihou Zhang, Dylan Beitzel, Hessam Majd, Mustafa Mutluay, Arzu Tezvergil-Mutluay, Franklin R. Tay, David H. Pashley, Dwayne Arola Source Type: research

Editorial Board
(Source: Dental Materials)
Source: Dental Materials - September 20, 2017 Category: Materials Science Source Type: research

The properties of experimental resin-modified glass-ionomer luting cements (RMGICs) containing novel monomers
Luting cements play an important role in determining the long-term clinical success of fixed prosthodontic restorations [1]. However, selecting an appropriate material for a particular clinical situation may be challenging due to the wide range available, resulting from recent improvements [2]. Ideally they should have adequate biological, physicomechanical and handling properties [3], and can also be classified according to their bonding durability to, (i) low, e.g. zinc phosphate cements, (ii) medium, e.g. (Source: Dental Materials)
Source: Dental Materials - September 20, 2017 Category: Materials Science Authors: Amani Agha, Sandra Parker, Mangala P. Patel Source Type: research

A comparative study on the wear behavior of a polymer infiltrated ceramic network (PICN) material and tooth enamel
Tooth wear refers to the loss of hard tissue caused by means other than dental caries or dental trauma [1]. It is a normal physiological process occurring throughout life. Accelerated tooth wear can cause problems, such as dentine hypersensitivity, pulp exposure and even periapical diseases [2]. Lambrechts et al. reported that the wear depth of natural tooth enamel is 15 –40μm a year in normal circumstances, and that this physiological wear is of great importance for the maintenance of the stomatognathic system’s health [3]. (Source: Dental Materials)
Source: Dental Materials - September 20, 2017 Category: Materials Science Authors: Zhou Xu, Ping Yu, Dwayne D. Arola, Jie Min, Shanshan Gao Source Type: research

Clinical studies in restorative dentistry: New directions and new demands
Clinical research of restorative materials is confounded by problems of study designs, length of trials, type of information collected, and costs for trials, despite increasing numbers and considerable development of trials during the past 50 years. This opinion paper aims to discuss advantages and disadvantages of different study designs and outcomes for evaluating survival of dental restorations and to make recommendations for future study designs. Advantages and disadvantages of randomized trials, prospective and retrospective longitudinal studies, practice-based, pragmatic and cohort studies are addressed and discussed...
Source: Dental Materials - September 20, 2017 Category: Materials Science Authors: N.J.M. Opdam, K. Collares, R. Hickel, S.C. Bayne, B.A. Loomans, M.S. Cenci, C.D. Lynch, M.B. Correa, F. Demarco, F. Schwendicke, N.H.F. Wilson Tags: Review Source Type: research

Dimensional changes from the sintering process and fit of Y-TZP copings: Micro-CT analysis
Yttria-stabilized tetragonal zirconia (Y-TZP) is the most used polycrystalline ceramic for the purposes of prosthetic dentistry [1]. Y-TZP frameworks are made using CAD/CAM technology from the milling of pre-manufactured blocks. Commercially, these blocks are available in two different sintering stages: the pre-sintered and fully sintered stages [2]. In comparison with fully sintered blocks, pre-sintered blocks present the advantage of an easier and faster milling procedure and less wear of the machining tools [3]. (Source: Dental Materials)
Source: Dental Materials - September 19, 2017 Category: Materials Science Authors: Carlos Eduardo Edwards Rezende, Ana Fl ávia Sanches Borges, Rander Moreira Macedo, José Henrique Rubo, Jason Alan Griggs Source Type: research

Academy of Dental Materials guidance —Resin composites: Part II—Technique sensitivity (handling, polymerization, dimensional changes)
The objective of this work, commissioned by the Academy of Dental Materials, was to review and critically appraise test methods to characterize properties related to critical issues for dental resin composites, including technique sensitivity and handling, polymerization, and dimensional stability, in order to provide specific guidance to investigators planning studies of these properties. (Source: Dental Materials)
Source: Dental Materials - September 13, 2017 Category: Materials Science Authors: J.L. Ferracane, T.J. Hilton, J.W. Stansbury, D.C. Watts, N. Silikas, N. Ilie, S. Heintze, M. Cadenaro, R. Hickel Source Type: research

A consensus-based approach to evidence-based clinical practice
Clinical dentistry is a difficult topic because little is either black or white; instead there are many, many grey areas. Practitioners and dental students know that if you present a case to 6 different dentists you will probably generate six different treatment plans, five of which will be similar and one will likely be radically different. Therefore, it is understandable to search for guidelines that are based on sound science. The modern way is to look for reproducible Scientific Evidence (Evidence Based Dentistry). (Source: Dental Materials)
Source: Dental Materials - September 12, 2017 Category: Materials Science Authors: Jean-Fran çois Roulet Tags: Editorial Source Type: research

Calibration of a lactic-acid model for simulating biofilm-induced degradation of the dentin-composite interface
To verify and calibrate a chemical model for simulating the degradation of the dentin-composite interface induced by multi-species oral biofilms in vitro. (Source: Dental Materials)
Source: Dental Materials - September 7, 2017 Category: Materials Science Authors: Laikuan Zhu, Yuping Li, Carola A. Carrera, Yung-Chung Chen, Mingyu Li, Alex Fok Source Type: research

3D printed TCP-based scaffold incorporating VEGF-loaded PLGA microspheres for craniofacial tissue engineering
Vascularization is a critical process during bone regeneration/repair and the lack of tissue vascularization is recognized as a major challenge in applying bone tissue engineering methods for cranial and maxillofacial surgeries. The aim of our study is to fabricate a vascular endothelial growth factor (VEGF)-loaded gelatin/alginate/ β-TCP composite scaffold by 3D printing method using a computer-assisted design (CAD) model. (Source: Dental Materials)
Source: Dental Materials - September 4, 2017 Category: Materials Science Authors: F. Fahimipour, M. Rasoulianboroujeni, E. Dashtimoghadam, K. Khoshroo, M. Tahriri, F. Bastami, D. Lobner, L. Tayebi Source Type: research

Analysis of temperature increase in swine gingiva after exposure to a Polywave ® LED light curing unit
Light emitting diode (LED) light curing units (LCU) have become one of the most important tools in the clinicians' routine. Although earlier LED LCU generations were considered “cool” lights because they generated less heat than did quartz-tungsten-halogen (QTH) lamps [1–5], later, more powerful LCU versions were capable of generating as much heat as QTH sources [4,6–8]. Most recently, a new generation of LED lamp has been introduced. Different from the previous ge nerations, these polywave® or “dual-peak” (multi-wave, multi-peak) LCUs emit light a broader wavelength range [9] to act...
Source: Dental Materials - August 18, 2017 Category: Materials Science Authors: Cristiane Maucoski, Driellen Christine Zarpellon, Fabio Andre dos Santos, Leandro Cavalcante Lipinski, Eduardo Bauml Campagnoli, Frederick Allen Rueggeberg, Cesar Augusto Galv ão Arrais Source Type: research

Favorable residual stress induction by resin-cementation on dental porcelain
In this study we explore whether shrinkage stresses generated on photo-polymerisation of the resin-cement are sufficient to induce ceramic surface defect stabilization, and we quantify the transient nature of the induced stresses. (Source: Dental Materials)
Source: Dental Materials - August 16, 2017 Category: Materials Science Authors: Garry J.P. Fleming, Xu Cao, Dan L. Romanyk, Owen Addison Source Type: research

Antibiofilm properties of model composites containing quaternary ammonium methacrylates after surface texture modification
Investigate antimicrobial properties and surface texture of model composites with different concentration and alkyl chain length of quaternary ammonium monomers (QAS). (Source: Dental Materials)
Source: Dental Materials - August 16, 2017 Category: Materials Science Authors: Guilherme Ferreira Rego, Marina Lermen Vidal, Gil Mendes Viana, Lucio Mendes Cabral, Luis Felipe Jochims Schneider, Maristela Barbosa Portela, Larissa Maria Cavalcante Source Type: research

Impact of machining on the flexural fatigue strength of glass and polycrystalline CAD/CAM ceramics
Recent improvements in the mechanical properties of dental ceramic systems and the implementation of computer-aided design, computer-aided manufacturing (CAD/CAM) technology in restorative dentistry have widely contributed to the increase in the use of all-ceramic restorations as an alternative for satisfying the high esthetic demand of patients [1]. (Source: Dental Materials)
Source: Dental Materials - August 14, 2017 Category: Materials Science Authors: Sara Fraga, Marina Amaral, Marco Ant ônio Bottino, Luiz Felipe Valandro, Cornelis Johannes Kleverlaan, Liliana Gressler May Source Type: research

Impact of thio-urethane additive and filler type on light-transmission and depth of polymerization of dental composites
The vast majority of posterior restorations is performed using direct resin composites, with an annual failure rate of around 2%, resulting in cumulative survival values of as high as 60% after 20 years follow-up [1]. The expansion in use of composites to restore posterior teeth is mainly due to a significant improvement in wear behavior and general mechanical properties, which allowed this material to be applied in high load bearing zones [2]. However, there are still many drawbacks that prevent composite restorations from surviving longer than an average of 10 years [4], failing mainly due to secondary caries and fractur...
Source: Dental Materials - August 11, 2017 Category: Materials Science Authors: Andr é Luis Faria-e-Silva, Carmem Silvia Pfeifer Source Type: research

Impact of head and neck radiotherapy on the mechanical behavior of composite resins and adhesive systems: A systematic review
Head and neck radiotherapy (HNRT) produces a series of toxicities on non-targeted healthy tissues surrounding the tumor, leading to hyposalivation, mucositis, trismus, osteoradionecrosis and radiation-related caries [1 –3]. The latter is marked by a rapid onset and a high potential for generalized dental destruction, affecting approximately 25% of the patients who concluded this treatment, which compromises the overall oral function and the quality of life of cancer survivors [4]. As a consequence, there’s a s trong recommendation for head and neck cancer patients to have their oral health monitored before, dur...
Source: Dental Materials - August 8, 2017 Category: Materials Science Authors: Cristhian Camilo Madrid Troconis, Alan Roger Santos-Silva, Tha ís Bianca Brandão, Marcio Ajudarte Lopes, Mario Fernando de Goes Source Type: research

Metal-composite adhesion based on diazonium chemistry
Composite resins do not adhere well to dental alloys. This weak bond can result in failure at the composite-metal interface in fixed dental prostheses and orthodontic brackets. The aim of this study was to develop a new adhesive, based on diazonium chemistry, to facilitate chemical bonding between dental alloys and composite resin. (Source: Dental Materials)
Source: Dental Materials - August 7, 2017 Category: Materials Science Authors: Yara Oweis, Omar Alageel, Paige Kozak, Mohamed-Nur Abdallah, Jean-Marc Retrouvey, Marta Cerruti, Faleh Tamimi Source Type: research

Synthesis of wrinkled mesoporous silica and its reinforcing effect for dental resin composites
Dental resin-based composites have been widely used as hard tissue substitutes to restore dental caries and other defects since the early 1960s, thanks to their superior aesthetics and biocompatibility over dental amalgams [1 –4]. These composites are primarily comprised of inorganic filler particles dispersed in a resin matrix which can be polymerized under a blue light irradiation. Despite recent advances in the optimization of monomer structures and filler compositions, the fracture of resin composite restorations i s still one of the main causes for failure in clinical applications, which prevents their applicati...
Source: Dental Materials - August 7, 2017 Category: Materials Science Authors: Ruili Wang, Eric Habib, X.X. Zhu Source Type: research

Editorial Board
(Source: Dental Materials)
Source: Dental Materials - August 6, 2017 Category: Materials Science Source Type: research

Aging of 3Y-TZP dental zirconia and yttrium depletion
To date, stabilized zirconia is a well-established biomaterial used in dentistry. Zirconia used in dental applications is usually stabilized with 3 mol% Y2O3 (3Y-TZP) [1 –3]. The use of Y2O3 was first suggested with the addition of 2–3mol% Y2O3 resulting in materials with only the desired tetragonal crystallographic phase (t-ZrO2), called tetragonal zirconia polycrystals (TZP) [4]. The 3Y-TZP zirconia presents advanced mechanical properties as well as chemical, thermal and dimensional stability, compared to other ceramic systems. (Source: Dental Materials)
Source: Dental Materials - August 5, 2017 Category: Materials Science Authors: P. Pandoleon, E. Kontonasaki, N. Kantiranis, N. Pliatsikas, P. Patsalas, L. Papadopoulou, T. Zorba, K.M. Paraskevopoulos, P. Koidis Source Type: research

Resin-dentin bond stability and physical characterization of a two-step self-etching adhesive system associated with TiF4
Dentin biomodifiers and dentin pretreatment agents have been proposed for the purpose of reducing hybrid layer degradation, inhibiting the action of metalloproteinases present in the dentin matrix, diminishing the incidence of secondary caries lesions, and acting on bond strength stability [1,2]. Among the dentin pretreatment agents, the application of an aqueous solution of titanium tetrafluoride (TiF4) promotes the formation of a massive structure composed of titanium oxides or organometallic complexes, and a stable, modified, acid resistant smear layer [3,4]. (Source: Dental Materials)
Source: Dental Materials - August 3, 2017 Category: Materials Science Authors: Gabriele Barbosa Torres, T ânia Mara da Silva, Rosanna Tarkany Basting, Enrico Coser Bridi, Fabiana Mantovani Gomes França, Cecilia Pedroso Turssi, Flávia Lucisano Botelho do Amaral, Sérgio Eduardo de Paiva Gonçalves, Roberta Tarkany Basting Source Type: research

Effect of conditioning solutions containing ferric chloride on dentin bond strength and collagen degradation
To investigate the effects of conditioning solutions containing ferric chloride (FeCl3) on resin –dentin bond strength; on protection of dentin collagen against enzymatic degradation and on cathepsin-K (CT-K) activity. (Source: Dental Materials)
Source: Dental Materials - August 2, 2017 Category: Materials Science Authors: Raquel Viana Rodrigues, Marcelo Giannini, Fernanda Miori Pascon, Preety Panwar, Dieter Br ömme, Adriana Pigozzo Manso, Ricardo Marins Carvalho Source Type: research

Silver nanoparticles in dentistry
The use of silver in oral care has been known for centuries and gained worldwide spread in the 19th century as one the main components in dental amalgams used for tooth restoration. Its use in amalgams has been reduced since 1930 as they were progressively substituted by esthetic polymer-based resins [1]. Since nanoscience has evolved and the outstanding antimicrobial properties of nanostructured silver-based formulations have been demonstrated against microorganisms such as bacteria, viruses, and fungi [2 –8], the interest in silver has been renewed, and several promising new technologies are currently under develop...
Source: Dental Materials - August 2, 2017 Category: Materials Science Authors: Victor T. Noronha, Amauri J. Paula, Gabriela Dur án, Andre Galembeck, Karina Cogo-Müller, Michelle Franz-Montan, Nelson Durán Source Type: research

Rechargeable microbial anti-adhesive polymethyl methacrylate incorporating silver sulfadiazine-loaded mesoporous silica nanocarriers
Polymethyl methacrylate (PMMA), which has been clinically accepted for over 70 years, has been used as a biomaterial in the dental/medical area for removable or implantable appliances (i.e., denture base resin and facial prostheses) due to its easy fabrication, appropriate mechanical properties and relatively economical price [1 –3]. However, this material exhibits poor microbial anti-adhesive and mechanical properties, which can cause failure in dental/medical restoration [4,5]. One of the most recent and intriguing approaches used to overcome these limitations is the application of nanoadditives in the form of nano...
Source: Dental Materials - August 1, 2017 Category: Materials Science Authors: Jeong-Ki Jo, Ahmed El-Fiqi, Jung-Hwan Lee, Dong-Ae Kim, Hae-Won Kim, Hae-Hyoung Lee Source Type: research

Development of binary and ternary titanium alloys for dental implants
Commercially pure titanium (cpTi) has been widely used as the main biomaterial for the manufacture of dental implants [1,2]. Nevertheless, like any other material used in physiological conditions, it is exposed to mechanical and biological factors [3] that may impair implant survival and long-term treatment success. In this context, alloys have been considered to be the treatment of choice [4], due to their improved properties, which allow for the development of materials according to clinical demands [5]. (Source: Dental Materials)
Source: Dental Materials - August 1, 2017 Category: Materials Science Authors: Jairo M. Cordeiro, Thamara Beline, Ana L úcia R. Ribeiro, Elidiane C. Rangel, Nilson C. da Cruz, Richard Landers, Leonardo P. Faverani, Luís Geraldo Vaz, Laiza M.G. Fais, Fabio B. Vicente, Carlos R. Grandini, Mathew T. Mathew, Cortino Sukotjo, Valentim Source Type: research

Modulation of Streptococcus mutans virulence by dental adhesives containing anti-caries agents
To overcome the disadvantages of composites restorations, such as contraction gaps and bonding degradation that may lead to secondary caries formation and restoration failure, restorative materials containing antibacterial agents have been developed [1,2]. Substances with broad antimicrobial spectra have been added to these restorative materials with no concern regarding the oral health resident bacteria and the promotion of bacterial resistance. Two compounds derived from Brazilian propolis, Apigenin and tt-Farnesol, are described in the literature as potential anti-caries agents [3 –5] which do not exert a signific...
Source: Dental Materials - July 31, 2017 Category: Materials Science Authors: Carolina Bosso Andr é, Pedro Luiz Rosalen, L.C.C. Galvão, Bruna Marin Fronza, Glaucia Maria Bovi Ambrosano, Jack Liborio Ferracane, Marcelo Giannini Source Type: research

Rapid biomimetic remineralization of the demineralized enamel surface using nano-particles of amorphous calcium phosphate guided by chimaeric peptides
The objective of this study was to develop a rapid and effective method to remineralize human carious-like enamel using chimaeric peptide-mediated nanocomplexes of carboxymethyl chitosan/amorphous calcium phosphate (CMC/ACP), mimicking the mineralizing pattern of the oriented assembly of ACP guided by amelogenin in the biomineralization of enamel. (Source: Dental Materials)
Source: Dental Materials - July 31, 2017 Category: Materials Science Authors: Zuohui Xiao, Kehua Que, Haorong Wang, Ran An, Zhen Chen, Zhongjun Qiu, Mingli Lin, Jinhua Song, Jie Yang, Danyang Lu, Minjuan Shen, Binbin Guan, Yinghui Wang, Xuliang Deng, Xiaoping Yang, Qing Cai, Jiaying Deng, Li Ma, Xi Zhang, Xu Zhang Source Type: research

Thermographic analysis of the effect of composite type, layering method, and curing light on the temperature rise of photo-cured composites in tooth cavities
The purpose of this study was to investigate temperature rise in the composite and dentin of a class I cavity in extracted human molars under different restoration conditions, including the use of different composite types, layering methods, and curing lights. (Source: Dental Materials)
Source: Dental Materials - July 28, 2017 Category: Materials Science Authors: Min-Jung Kim, Ryan Jin-Young Kim, Jack Ferracane, In-Bog Lee Source Type: research

Do quaternary ammonium monomers induce drug resistance in cariogenic, endodontic and periodontal bacterial species?
The objective of this study was to investigate the effects of new antimicrobial monomers dimethylaminohexadecyl methacrylate (DMAHDM) and dimethylaminododecyl methacrylate (DMADDM) on the induction of drug resistance in eight species of cariogenic, endodontic and periodontal bacteria for the first time. (Source: Dental Materials)
Source: Dental Materials - July 26, 2017 Category: Materials Science Authors: Suping Wang, Haohao Wang, Biao Ren, Hao Li, Michael D. Weir, Xuedong Zhou, Thomas W. Oates, Lei Cheng, Hockin H.K. Xu Source Type: research

Anti-proteolytic property and bonding durability of mussel adhesive protein-modified dentin adhesive interface
To evaluate the effect of mussel adhesive protein (MAP) on collagenase activity, dentin collagen degradation and microtensile dentin bond strength ( μTBS). (Source: Dental Materials)
Source: Dental Materials - July 25, 2017 Category: Materials Science Authors: Hui Fang, Quan-Li Li, Min Han, May Lei Mei, Chun Hung Chu Source Type: research

The interrelationship of microstructure and hardness of human coronal dentin using reference point indentation technique and micro-Raman spectroscopy
Tooth dentin is a hierarchical biocomposite composed of different structural elements, such as, dentinal tubules, highly-mineralized peritubular, intertubular dentin that is composed of type I collagen, and dentinal fluid [1]. The distribution of structural elements from superficial dentin, i.e., by the dentin-enamel junction (DEJ), to deep dentin, i.e., near the border of the coronal pulp chamber, results in an anisotropic biocomposite in which properties vary by location. Studies that have evaluated the structure and material properties of dentin suggest that the mechanical properties of dentin are dependent on its inter...
Source: Dental Materials - July 24, 2017 Category: Materials Science Authors: Rasoul Seyedmahmoud, Jacob D. McGuire, Yong Wang, Ganesh Thiagarajan, Mary P. Walker Source Type: research

Efficacy of new natural biomodification agents from Anacardiaceae extracts on dentin collagen cross-linking
Major drawbacks in dentin bond are related to enzymatic and hydrolytic degradation of hybrid layer and resin-sparse collagen matrix [1]. It is hypothesized that the quality and longevity of the dentin adhesion may be improved by increasing the dentin collagen mechanical properties [2]. In this regard, dentin biomodification improves the stiffness of the adhesive interface and protects the collagen fibrils from biodegradation by promoting collagen crosslinking [3]. (Source: Dental Materials)
Source: Dental Materials - July 24, 2017 Category: Materials Science Authors: M.A. Moreira, N.O. Souza, R.S. Sousa, D.Q. Freitas, M.V. Lemos, D.M. De Paula, F.J.N. Maia, D. Lomonaco, S.E. Mazzetto, V.P. Feitosa Source Type: research

Effect of calcium phosphate nanocomposite on in vitro remineralization of human dentin lesions
The objective of this study was to investigate the remineralization of human dentin lesions in vitro via restorations using nanocomposites containing nanoparticles of amorphous calcium phosphate (NACP) or NACP and tetracalcium phosphate (TTCP) for the first time. (Source: Dental Materials)
Source: Dental Materials - July 19, 2017 Category: Materials Science Authors: Michael D. Weir, Jianping Ruan, Ning Zhang, Laurence C. Chow, Ke Zhang, Xiaofeng Chang, Yuxing Bai, Hockin H.K. Xu Source Type: research

Antibacterial properties of nano-silver coated PEEK prepared through magnetron sputtering
We aimed to investigate the cytotoxicity and antibacterial properties of nano-silver-coated polyetheretherketone (PEEK) produced through magnetron sputtering and provide a theoretical basis for its use in clinical applications. (Source: Dental Materials)
Source: Dental Materials - July 19, 2017 Category: Materials Science Authors: Xiuju Liu, Kang Gan, Hong Liu, Xiaoqing Song, Tianjie Chen, Chenchen Liu Source Type: research

Bioactivity and properties of a dental adhesive functionalized with polyhedral oligomeric silsesquioxanes (POSS) and bioactive glass
Over the past decade, functionalization of dental adhesives to combat degradation of the dentin hybrid layer was intensively studied. The degradation of the hybrid layer is attributed to the hydrolytic and enzymatic degradation of hydrophilic resin components and exposed collagen fibrils lacking the protection of polymerized resin [1]. Strategies to prevent the degradation of the hybrid layer and, thus, to increase the longevity of composite restorations, include the inhibition of endogenous proteases and the stimulation of dentin mineralization [1]. (Source: Dental Materials)
Source: Dental Materials - July 15, 2017 Category: Materials Science Authors: Marta Rizk, Lisa Hohlfeld, Loan Tao Thanh, Ralf Biehl, Nicole L ühmann, Dirk Mohn, Annette Wiegand Source Type: research

Aspects of adhesion tests on resin –glass ceramic bonding
This study aimed to compare and contrast two resin –ceramic bond strength tests, the tensile bond strength and the four-point bending tests. The effects of hydrofluoric acid (HF) etching time and storage condition on bond strength were also studied. (Source: Dental Materials)
Source: Dental Materials - July 13, 2017 Category: Materials Science Authors: Andrew Chi Ho Wong, Tian Tian, James Kit Hon Tsoi, Michael Francis Burrow, Jukka Pekka Matinlinna Source Type: research

Biocompatibility and bond degradation of poly-acrylic acid coated copper iodide-adhesives
Despite significant progress to improve the survival of composite restorations, their long-term durability remains a concern. Bacterial proliferation due to marginal breakdown, and hydrolysis of both resin-based polymers by salivary esterases and demineralized collagen by endogenous proteases have been extensively investigated in the last few decades [1]. Agents with anti-bacterial and anti-proteolytic properties such as benzalkonium chloride [2], glutaraldehyde [3], chlorhexidine digluconate [4], and methacryloyloxydodecyl pyridinium bromide (MDPB) [5] have been proposed. (Source: Dental Materials)
Source: Dental Materials - July 13, 2017 Category: Materials Science Authors: Adi ALGhanem, Gabriela Fernandes, Michelle Visser, Rosemary Dziak, Walter G. Renn é, Camila Sabatini Source Type: research

Effects of low-dose Bisphenol A on calcium ion influx and on genes of proliferation and differentiation in immortalized human gingival cells in vitro: The role of estrogen receptor beta
The objective of this study was to investigate an assumed mechanistic interrelationship between both low-dose BPA-modulated Calcium ion (Ca2+) influx and cell behavior, and the estrogen receptor β (ERβ), in oral mucosal cells. (Source: Dental Materials)
Source: Dental Materials - July 9, 2017 Category: Materials Science Authors: Matthias Ehrenmann, Pascal Tomakidi, Elmar Hellwig, Simon Daniel Schulz, Olga Polydorou Source Type: research

Editorial Board
(Source: Dental Materials)
Source: Dental Materials - July 5, 2017 Category: Materials Science Source Type: research

Implications of resin-based composite (RBC) restoration on cuspal deflection and microleakage score in molar teeth: Placement protocol and restorative material
To assess the cuspal deflection of standardised large mesio-occluso-distal (MOD) cavities in third molar teeth restored using conventional resin-based composite (RBC) or their bulk fill restorative counterparts compared with the unbound condition using a twin channel deflection measuring gauge. Following thermocycling, the cervical microleakage of the restored teeth was assessed to determine marginal integrity. (Source: Dental Materials)
Source: Dental Materials - July 5, 2017 Category: Materials Science Authors: Lauren E.J. McHugh, Ioanna Politi, Rami S. Al-Fodeh, Garry J.P. Fleming Source Type: research

Glass-ceramic coating material for the CO2 laser based sintering of thin films as caries and erosion protection
Tooth-preserving preventative measures such as composite-based fissure sealing materials are moderately effective. They have been shown to offer effective protection against caries in the first 48 months, however beyond that period it is also clear that this protection is no longer effective [1]. In fact, the failure rate is 30 –55% after 5 years [2,3]. A reason for the failure rate is an insufficient adhesive bonding between the filling material and the tooth surface. Therefore tooth decay can often form below the sealing material itself. (Source: Dental Materials)
Source: Dental Materials - June 26, 2017 Category: Materials Science Authors: Marin Dean Biland žić, Susanne Wollgarten, Jochen Stollenwerk, Reinhart Poprawe, Marcella Esteves-Oliveira, Horst Fischer Source Type: research

Different PEEK qualities irradiated with light of different wavelengths: Impact on Martens hardness
To assess the impact of irradiation on Martens hardness parameters of different PEEK qualities filled with titanium dioxide (TiO2), namely PEEK/0%, PEEK/20%, and PEEK/>30%. (Source: Dental Materials)
Source: Dental Materials - June 26, 2017 Category: Materials Science Authors: Nina L ümkemann, Marlis Eichberger, Bogna Stawarczyk Source Type: research

The influence of Y-TZP surface treatment on topography and ceramic/resin cement interfacial fracture toughness
The preferential use of ceramics for fixed dental prostheses is widespread in dentistry today. All-ceramic (metal-free) fixed dental prostheses (FDPs) are considered a reliable alternative material to metal-ceramic FDPs in daily dental clinical practice. Besides its aesthetic quality – perfectly capable of substituting the dental substrate – dental ceramics also have high chemical stability, biocompatibility [1] and superior mechanical properties. These characteristics result in great longevity of all-ceramic dental prosthesis and make its use in dentistry more advantageous over other tooth colored materials, s...
Source: Dental Materials - June 26, 2017 Category: Materials Science Authors: P.N.G. Paes, F.L. Bastian, P.M. Jardim Source Type: research

Comparison of three and four point bending evaluation of two adhesive bonding systems for glass-ceramic zirconia bi-layered ceramics
To quantify the adhesion of two bonding approaches of zirconia to more aesthetic glass-ceramic materials using the Schwickerath (ISO 9693-2:2016) three point bend (3PB) [1] test to determine the fracture initiation strength and strain energy release rate associated with stable crack extension with this test and the Charalamabides et al. (1989) [2] four point bend (4PB) test. (Source: Dental Materials)
Source: Dental Materials - June 26, 2017 Category: Materials Science Authors: C. Gee, J.N. Weddell, M.V. Swain Source Type: research

Monolithic zirconia dental crowns. Internal fit, margin quality, fracture mode and load at fracture
The production methods for dental ceramics have improved greatly over the years [1 –3]. Increased proportion of crystalline particles has led to higher resistance to functional loads, but also changed the optical properties of the material [2,4]. An yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) popularly called “zirconia” has been the most common dental high-stre ngth ceramic for some years. Y-TZP contains only polycrystalline particles in a metastable tetragonal crystal structure, and is the dental ceramic material with the highest fracture strength available today [5,6]. (Source: Dental Materials)
Source: Dental Materials - June 26, 2017 Category: Materials Science Authors: Christian Schriwer, Anneli Skjold, Nils Roar Gjerdet, Marit Øilo Source Type: research

The impact of argon/oxygen low-pressure plasma on shear bond strength between a veneering composite and different PEEK materials
The aim of the study was to evaluate the impact of low-pressure argon/oxygen plasma with and without previous sandblasting on the shear bond strength (SBS) between dental PEEK compounds and a veneering composite. (Source: Dental Materials)
Source: Dental Materials - June 26, 2017 Category: Materials Science Authors: Andreas Dominik Schwitalla, Friederike B ötel, Tycho Zimmermann, Mona Sütel, Wolf-Dieter Müller Source Type: research

ADM research guidance papers
In 2014 the Board of the Academy of Dental Materials recognized there was an increasing need to provide written mentorship to young faculty and graduate students doing materials research – but not having experienced mentors. The Academy membership includes more than 200 top academic-based dental materials faculty worldwide. We all regularly receive requests for assistance and guidance from young faculty and students. It is often the case that proposed projects are not well conceiv ed, ignore important literature or anticipate using inappropriate methodology. (Source: Dental Materials)
Source: Dental Materials - June 24, 2017 Category: Materials Science Authors: Paulo Cesar, Reinhard Hickel, J. Robert Kelly, Ulrich Lohbauer, David C. Watts Tags: Editorial Source Type: research

Long-term stability of an injection-molded zirconia bone-level implant: A testing protocol considering aging kinetics and dynamic fatigue
Based on well-documented clinical outcome, oral implants made from titanium are a valid treatment option in patients care when replacing missing or deteriorated teeth [1]. For patients opposing metals, oral implants made from polycrystalline zirconium dioxide represent the only nowadays available alternative [2]. Zirconium dioxide (ZrO2, zirconia) presents the phenomenon of allotropy, characterized by temperature-dependent crystal structures [3]. When stabilizing the tetragonal phase at room temperature, the polymorphous character of zirconia allows for stress-induced phase transformation toughening (PTT) [4]. (Source: Dental Materials)
Source: Dental Materials - June 19, 2017 Category: Materials Science Authors: Benedikt C. Spies, Madeleine E. Maass, Erik Adolfsson, Valter Sergo, Tobias Kiemle, Christoph Berthold, Elisa Gurian, Stefano Fornasaro, Kirstin Vach, Ralf-Joachim Kohal Source Type: research

Effect of dimethyl sulfoxide on dentin collagen
Ideally, in dentin the adhesive associates intimately with surface and creates a layer which can withstand the mechanical and chemical stress imposed upon it in the oral environment. The hybrid layer where collagen and adhesive intermingle is also considered the weak link, prone to degradation over time by host-derived proteinases and hydrolysis [1,2]. Failure of fillings to perform is often due to failure in this interface [3]. (Source: Dental Materials)
Source: Dental Materials - June 13, 2017 Category: Materials Science Authors: P. Meht älä, D.H. Pashley, L. Tjäderhane Source Type: research

Effects of silane- and MDP-based primers application orders on zirconia –resin adhesion—A ToF-SIMS study
Yttria-partially-stabilized tetragonal zirconia (YTZ) has been widely used in prosthodontic reconstructions due to its stable chemical properties, high mechanical strength, and aesthetic appearance. With these properties, it can be applied in both anterior and posterior tooth regions to support physiological chewing functions. However, the chemical stability and toughness of YTZ also indicates its low susceptibility to surface preparation for resin adhesion. YTZ is resistant to most acids, except strong hazardous hydrofluoric acids [1]. (Source: Dental Materials)
Source: Dental Materials - June 13, 2017 Category: Materials Science Authors: Shu-Fen Chuang, Li-Li Kang, Yi-Chuan Liu, Jui-Che Lin, Ching-Cheng Wang, Hui-Min Chen, Cheng-Kun Tai Source Type: research