Translational research on clinically failed zirconia implants
To provide fractographic analysis of clinically fractured zirconia implants recovered with their cemented crown. To calculate bending moments, corresponding stress and crack onset location on the implant ’s fracture surface using a mathematical model integrating spatial coordinates of the crown-implant part and occlusal loading obtained from 2D and 3D images. (Source: Dental Materials)
Source: Dental Materials - December 11, 2018 Category: Materials Science Authors: Susanne S. Scherrer, Mustapha Mekki, Claude Crottaz, Michael Gahlert, Eric Romelli, Laurine Marger, St éphane Durual, Eric Vittecoq Source Type: research
Biomimetic regulation of dentine remineralization by amino acid in vitro
The aim of this study was to evaluate the effect of conditioning solutions containing DL-aspartic amino (Asp) on dentine remineralization induced by bioactive glass 45S5 (BAG) in a simulated oral environment. (Source: Dental Materials)
Source: Dental Materials - December 10, 2018 Category: Materials Science Authors: Yuanmei Zhang, Zhejun Wang, Tao Jiang, Yining Wang Source Type: research
Integrating the PILP-mineralization process into a restorative dental treatment
The addition of charged polymers, like poly-aspartic acid (pAsp), to mineralizing solutions allows for transport of calcium and phosphate ions into the lumen of collagen fibrils and subsequent crystallization of oriented apatite crystals by the so-called Polymer-Induced Liquid Precursor (PILP) mineralization process, leading to the functional recovery of artificial dentin lesions by intrafibrillar mineralization of collagen. (Source: Dental Materials)
Source: Dental Materials - December 10, 2018 Category: Materials Science Authors: Margot Bacino, Vishavjeet Girn, Hamid Nurrohman, Kuniko Saeki, Sally J Marshall, Laurie Gower, Ella Saeed, Ray Stewart, Thuan Le, Grayson W Marshall, Stefan Habelitz Source Type: research
Polymerization shrinkage of bulk fill composite through optical coherence tomography
(Source: Dental Materials)
Source: Dental Materials - December 8, 2018 Category: Materials Science Source Type: research
Titanium dioxide and modified titanium dioxide by silver nanoparticles as an anti biofilm filler content for composite resins
A broad-spectrum antimicrobial composite resin materials is desired for dentistry, especially because composite resin materials accumulate more biofilm than other restorative materials and the current dental restorative materials did not have antimicrobial materials in the composition [1,2]. The high biofilm accumulation by composite resin restoration can contributes to the progress of secondary caries [3]. Because of that, researchers have focused their studies on nanostructured materials with antimicrobial potential, such as silver [4,5], zinc oxide [6,7], titanium dioxide [8,9], hydroxyapatite and chlorhexidine, in orde...
Source: Dental Materials - December 7, 2018 Category: Materials Science Authors: H ércules Bezerra Dias, Maria Inês Basso Bernardi, Taís Maria Bauab, Antônio Carlos Hernandes, Alessandra Nara de Souza Rastelli Source Type: research
Miniature specimens for fracture toughness evaluation of dental resin composites
Fracture toughness (KC) is a primary quantity in assessing fracture resistance of dental resin composites used for cavity filling in restored teeth. This quantity has been evaluated using numerous test specimens including compact tension, Chevron notched rod, double-torsion and notched three-point bending specimens. Fujishima and Ferracane conducted a comparative study of these specimens using two experimental and three commercial dental composites [1]. The resulting KC varied significantly among the specimens, and furthermore it was affected by crack tip sharpness. (Source: Dental Materials)
Source: Dental Materials - December 7, 2018 Category: Materials Science Authors: Herzl Chai, Xiaohong Wang, Jirun Sun Source Type: research
Synergistic effects of VE-TPGS and riboflavin in crosslinking of dentine
Effect of d-alpha-tocopheryl poly(ethyleneglycol)-1000-succinate (VE-TPGS) with riboflavin-5 ′-phosphate solution on crosslinking of dentine collagen was investigated to analyze collagen’s structural integrity. (Source: Dental Materials)
Source: Dental Materials - December 7, 2018 Category: Materials Science Authors: U. Daood, J.P. Matinlinna, A.S. Fawzy Source Type: research
In memoriam of Professor Michael Braden
Michael (Mike) Braden passed away on 22nd November 2017 in Harpenden, UK. He leaves behind four children: Mark, Mandy, Diana and Sue, 5 grandchildren and his brother and sisters. His funeral was held on 13th December 2017 at St Nicholas Church, Harpenden and was attended by family, friends, ex-colleagues and students. Following this, his academic career was celebrated with a gathering “Remembering Mike Braden” at Barts and the London School of Medicine and Dentistry (BLSMD), Queen Mary University of London (QMUL), on 22nd February 2018. (Source: Dental Materials)
Source: Dental Materials - December 7, 2018 Category: Materials Science Authors: Mangala P. Patel, Sandra Parker Tags: Obituary Source Type: research
Dental pulp stem cells in chitosan/gelatin scaffolds for enhanced orofacial bone regeneration
The regeneration of alveolar bone defects to restore aesthetics and function in a predictable manner while offering a sustainable treatment outcome remains a major challenge still to be addressed despite recent advances in regenerative treatments. Alveolar bone defects may vary in nature; being associated with chronic inflammatory diseases, such as periodontitis or peri-implantitis, injuries, congenital disorders or resorption of the alveolar bone following tooth loss, all leading to noticeable deformity, impaired function and an overall compromised quality of life for patients; this latter being further aggravated by an i...
Source: Dental Materials - December 6, 2018 Category: Materials Science Authors: Athina Bakopoulou, Αnthie Georgopoulou, Ioannis Grivas, Chryssa Bekiari, Oleg Prymak, Κateryna Loza, Matthias Epple, George C. Papadopoulos, Petros Koidis, Μaria Chatzinikolaidou Source Type: research
A randomized controlled evaluation of posterior resin restorations of an altered resin modified glass-ionomer cement with claimed bioactivity
The objective of this randomized controlled prospective clinical trial was to evaluate the short time clinical behaviour of an altered resin modified glass-ionomer cement (RMGIC), which is claimed to possess bioactivity, in posterior restorations and to compare it intraindividually with a nanofilled resin composite. (Source: Dental Materials)
Source: Dental Materials - December 6, 2018 Category: Materials Science Authors: Jan W.V. van Dijken, Ulla Pallesen, Ana Benetti Source Type: research
Uniaxial/biaxial flexure strengths and elastic properties of resin-composite block materials for CAD/CAM
Comparing strengths under different loading conditions provides useful information on the mechanical behaviour of restorative materials under multiaxial masticatory loading in the oral cavity. The aims of this study was to investigate the flexural strengths and the reliability of resin-composite blocks for CAD/CAM by uniaxial and biaxial flexure tests and to compare the elastic properties measured by different methods including digital image correlation (DIC). (Source: Dental Materials)
Source: Dental Materials - December 6, 2018 Category: Materials Science Authors: Beom-Jin Choi, Sungsik Yoon, Yong-Woon Im, Jung-Hwan Lee, Hyung-Jo Jung, Hae-Hyoung Lee Source Type: research
Whiteness difference thresholds in dentistry
To determine the visual whiteness thresholds for esthetic dentistry using the whiteness index for dentistry based on CIELAB color space (WID). (Source: Dental Materials)
Source: Dental Materials - December 6, 2018 Category: Materials Science Authors: Mar ía M. Pérez, Luis Javier Herrera, Francisco Carrillo, Oscar E. Pecho, Diana Dudea, Cristina Gasparik, Razvan Ghinea, Alvaro Della Bona Source Type: research
In vitro cytotoxicity of dental adhesives: A systematic review
The increased demand for esthetics and minimally invasive tooth restorations resulted in a rapid development of adhesive dentistry. However, much controversy remains about the safe use and cytotoxic effects of different groups of dental adhesives. The present study performed a systematic review to identify the answer to the following question: are self-etch adhesives more cytotoxic than those employing the etch-and-rinse system? (Source: Dental Materials)
Source: Dental Materials - December 4, 2018 Category: Materials Science Authors: Isleine Portal Caldas, Gutemberg Gomes Alves, Igor Bastos Barbosa, Pantaleo Scelza, Fernando de Noronha, Miriam Zaccaro Scelza Source Type: research
Effect of slow-cooling protocol on biaxial flexural strengths of bilayered porcelain-ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/A) disks
All-ceramic dental restorations require good esthetic appearance and sufficient mechanical properties to withstand occlusal or chewing forces because of the inherent brittleness of ceramic systems, which leads to premature failure by repeated contact loading in moist environments [1]. In zirconia-based prosthodontic restorations, ceria-stabilized zirconia/alumina (Ce-TZP/A) nanocomposite ceramic is a promising alternative due to its superior characteristics of high fracture toughness, absence of low-temperature degradation, and reduced framework thickness relative to conventional yttria-stabilized tetragonal zirconia polyc...
Source: Dental Materials - December 3, 2018 Category: Materials Science Authors: Tomofumi Sawada, Verena Wagner, Christine Schille, Sebastian Spintzyk, Ernst Schweizer, J ürgen Geis-Gerstorfer Source Type: research
Biomimetic transformation of polyphosphate microparticles during restoration of damaged teeth
Dental restoration/dental filling aims to treat and to restore the function, integrity, and morphology of missing tooth structure occurring as a consequence of caries or of external trauma. Such a closing of space, where bacteria could enter, also helps to prevent further decay. At present the materials used for fillings include gold, porcelains, defined composite resins and amalgams. Those components are regeneratively inert, since they are not included in a repair or a remodeling process of the decayed tooth, or of the surrounding tissue (reviewed in Ref.: [1]). (Source: Dental Materials)
Source: Dental Materials - December 3, 2018 Category: Materials Science Authors: Maximilian Ackermann, Emad Tolba, Meik Neufurth, Shunfeng Wang, Heinz C. Schr öder, Xiaohong Wang, Werner E.G. Müller Source Type: research
