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 made...
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
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(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 of ...
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
