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Dental bonding

Declan T Millett, Anne-Marie Glenny, Rye Cr Mattick, Joy Hickman, Nicky A Mandall
BACKGROUND: Orthodontic treatment involves using fixed or removable appliances (dental braces) to correct the positions of teeth. It has been shown that the quality of treatment result obtained with fixed appliances is much better than with removable appliances. Fixed appliances are, therefore, favoured by most orthodontists for treatment. The success of a fixed orthodontic appliance depends on the metal attachments (brackets and bands) being attached securely to the teeth so that they do not become loose during treatment...
October 25, 2016: Cochrane Database of Systematic Reviews
Mayo Takada, Masaya Suzuki, Maiko Haga-Tsujimura, Koichi Shinkai
We examined the effects of adhesive systems under study applied for a laser-cut cavity using an Er,Cr:YSGG laser on rat dental pulp at 24 h and 14 days postoperatively. Group 1, laser-cut cavities were treated with a self-etching-primer and bonding agent; group 2, pretreated with a phosphoric-acid, and then treated with a self-etching-primer and bonding agent; group 3, pretreated with a phosphoric-acid and sodium-hypochlorite, and then treated with a self-etching-primer and bonding agent; and group 4, treated with an all-in-one adhesive...
October 24, 2016: Odontology
Linyong Song, Qiang Ye, Xueping Ge, Anil Misra, Candan Tamerler, Paulette Spencer
A self-strengthening methacrylate-based dental adhesive system was developed by introducing an epoxy cyclohexyl trimethoxysilane (TS) which contains both epoxy and methoxysilyl functional groups. The experimental formulation, HEMA/BisGMA/TS (22.5/27.5/50, wt%), was polymerized by visible-light. Real-time Fourier transform infrared spectroscopy (FTIR) was used to investigate in situ the free radical polymerization of methacrylate, ring-opening cationic polymerization of epoxy, and photoacid-induced sol-gel reactions...
2016: RSC Advances
Vincenzo Grassia, Enrica Gentile, Dario Di Stasio, Abdolreza Jamilian, Giovanni Matarese, Fabrizia D'Apuzzo, Rossella Santoro, Letizia Perillo, Rosario Serpico, Alberta Lucchese
After orthodontic treatment with fixed appliances, bonded brackets and residual adhesive must be removed. This procedure should lead to restitutio ad integrum of the enamel or, at least, restore the enamel surface as closely as possible to its pre-treatment conditions. The purpose of this study is the in vivo assessment at a microscopic resolution of enamel surfaces after bracket debonding while avoiding the tooth extraction. Nine orthodontic patients who had brackets removed at the conclusion of orthodontic treatment were enrolled...
October 13, 2016: Ultrastructural Pathology
Manuel Alberto Bortagaray, Claudio Arturo Antonio Ibañez, Maria Constanza Ibañez, Juan Carlos Ibañez
OBJECTIVE: To determine whether the Noble Bond(®) Argen(®) alloy was electrochemically suitable for the manufacturing of prosthetic superstructures over commercially pure titanium (c.p. Ti) implants. Also, the electrolytic corrosion effects over three types of materials used on prosthetic suprastructures that were coupled with titanium implants were analysed: Noble Bond(®) (Argen(®) ), Argelite 76sf +(®) (Argen(®) ), and commercially pure titanium. MATERIALS AND METHODS: 15 samples were studied, consisting in 1 abutment and one c...
2016: Open Dentistry Journal
Augusto Ricardo Andrighetto, Eduardo Henrique de Leão Withers, Karlos Giovani Grando, Aldrieli Regina Ambrosio, Roberto Hideo Shimizu, Ana Cláudia Melo
BACKGROUND: Tooth bleaching is, today, one of the most widespread cosmetic treatments in dental practice,  so it is important to determine whether it can interfere with orthodontic bonding or not. AIM: The aim of this study was to assess the in vitro effects of 35% hydrogen peroxide bleaching agent on the shear bond strength of orthodontic brackets. MATERIALS AND METHODS: Forty-five upper bicuspids were divided into three groups (n = 15)...
July 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
X P Luo
Tooth wear has complex and multi-factorial etiologies that result in the surface loss of dental hard tissues. Clinic prevention and restorative technology of tooth wear are challenge for dentists with the increasing numbers of population and the transition of disease age. From the etiology and classification of tooth wear, it is crucial to accurately assess and diagnose a patient presenting with tooth wear. Fluoride application, sealant and resin bonded restoration are beneficial to manage the mild tooth wear...
October 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
Maziar Montazerian, Edgar Dutra Zanotto
The global market for dental materials is predicted to exceed 10 billion dollars by 2020. The main drivers for this growth are easing the workflow of dentists and increasing the comfort of patients. Therefore, remarkable research projects have been conducted and are currently underway to develop improved or new dental materials with enhanced properties or that can be processed using advanced technologies, such as CAD/CAM or 3D printing. Among these materials, zirconia, glass or polymer-infiltrated ceramics, and glass-ceramics (GCs) are of great importance...
October 4, 2016: Journal of Biomedical Materials Research. Part A
Frank A Spitznagel, Alexander Vuck, Petra C Gierthumuehlen, Markus B Blatz, Sebastian D Horvath
Recently, hybrid materials have been introduced to the dental market. Together with computer-assisted design/computer-assisted manufacturing (CAD/CAM) composite resins, they form a new class of dental CAD/CAM materials that combine the positive effects of ceramics and composites. As bonding is essential for their clinical longevity, it is crucial to have a good understanding of their material properties and cementation protocols. This review offers clinicians an overview of available hybrid materials and recommendations for their respective adhesive placements...
October 2016: Compendium of Continuing Education in Dentistry
James A Lane, Samantha J Hughey, Paul N Gregory, Daranee Versluis-Tantbirojn, James F Simon, Janet Harrison, Antheunis Versluis
The quality of the bond at the tooth-restoration interface is crucial to the clinical success of composite restorations. Not only is the adhesive crucial, but equally or even more important is the application. This article addresses pitfalls in the bonding technique, such as over-wetness/over-dryness, over-etching, airthinning, and evaporation. Dental adhesives that are considered forgiving are less technique sensitive, thus potentially yielding more reliable bonding under various clinical conditions.
October 2016: Compendium of Continuing Education in Dentistry
Markus B Blatz, Marcela Alvarez, Kimiyo Sawyer, Marco Brindis
Zirconia has become one of the most popular materials in dentistry. New high-translucent zirconia ceramics have favorable optical properties and can be applied as monolithic full-contour restorations in various clinical indications for posterior and anterior teeth. However, having reliable cementation protocols is fundamental for clinical success of indirect ceramic dental restorations, including those made from zirconia materials. Resin bonding supports ceramic restorations and is necessary for onlays, laminate veneers, and resinbonded fixed dental prostheses...
October 2016: Compendium of Continuing Education in Dentistry
Lin Wang, Xianju Xie, Michael D Weir, Ashraf F Fouad, Liang Zhao, Hockin H K Xu
The objectives of this study were to: (1) develop a new bioactive dental bonding agent with nanoparticles of amorphous calcium phosphate and dimethylaminohexadecyl methacrylate for tooth root caries restorations and endodontic applications, and (2) investigate biofilm inhibition by the bioactive bonding agent against eight species of periodontal and endodontic pathogens for the first time. Bonding agent was formulated with 5 % of dimethylaminohexadecyl methacrylate. Nanoparticles of amorphous calcium phosphate at 30 wt% was mixed into adhesive...
November 2016: Journal of Materials Science. Materials in Medicine
Victor Clavijo, Leonardo Bocabella, Luisa Schertel Cassiano, Sillas Duarte
OBJECTIVE: Selecting the appropriate material is essential when restoring color and appearance of esthetically compromised anterior teeth. CLINICAL CONSIDERATIONS: Most of the conventional restorative techniques require tooth reduction in order to mimic optical properties of a natural tooth. Fortunately, bonding techniques associated with improvements on dental ceramics esthetics allow for highly conservative treatment options in which maximum preservation of dental tissues can be attained...
September 2016: Journal of Esthetic and Restorative Dentistry
T De Caluwé, C W J Vercruysse, H A Declercq, D Schaubroeck, R M H Verbeeck, L C Martens
OBJECTIVE: Bioactive glasses (BAG) form, in contrast to formerly used implant materials, a stable bond with tissues, especially bone, when implanted. Nowadays BAGs are often mixed with a cement/composite that hardens in situ to broaden its applications in dentistry or orthopedics. The bioactivity and biocompatibility of possible BAG candidates for BAG-cement/composite development were evaluated. METHODS: Two fluoride containing BAGs were tested: a Na(+)-containing (45S5F), based on the first commercial BAG, and a Na(+)-free BAG (CF9), with a higher Ca(2+) and PO4(3-) content...
September 26, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Carlos Caravaca, Liu Shi, Sandra Balvay, Pascaline Rivory, Emmanuelle Laurenceau, Yann Chevolot, Daniel Hartmann, Laurent Gremillard, Jérôme Chevalier
: High-performance bioinert ceramics such as zirconia have been used for biomedical devices since the early seventies. In order to promote osseointegration, the historical solution has been to increase the specific surface of the implant through roughness. Nevertheless these treatments on ceramics may create defects at the surface, exposing the material to higher chances of early failure. In zirconia, such treatments may also affect the stability of the surface. More recently, the interest of improving osseointegration of implants has moved the research focus towards the actual chemistry of the surface...
September 26, 2016: Acta Biomaterialia
Anastasia Beketova, Nikolaos Poulakis, Athina Bakopoulou, Triantafillia Zorba, Lambrini Papadopoulou, Dimitrios Christofilos, Nikolaos Kantiranis, George A Zachariadis, Eleana Kontonasaki, Gerasimos A Kourouklis, Konstantinos M Paraskevopoulos, Petros Koidis
OBJECTIVES: Aims of this study were to investigate the optimal conditions of laser irradiation of a novel Bioactive Glass/Dental Ceramic-BP67 composite for acceleration of hydroxyapatite-HA formation and to assess cellular responses on the precipitated HA region. METHODS: BP67 (Bioactive Glass: 33.3%, Dental Ceramic: 66.7%) was fabricated by the sol-gel method. A laser assisted biomimetic-LAB process was applied to BP67 sintered specimens immersed in 1.5-times concentrated simulated body fluid-1...
September 24, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Maki Matsuzaki, Yasunori Ayukawa, Nobuo Sakai, Tatsuya Matsuzaki, Yasuyuki Matsushita, Kiyoshi Koyano
A number of finite element analyses (FEAs) for the dental implant were performed without regard for preload and with all interfaces 'fixed-bonded'. The purpose of this study was comparing the stress distributions between the conventional FEA model with all contacting interfaces 'fixed-bonded' (bonded model) and the model with the interfaces of the components in 'contact' with friction simulated as a preloaded implant (contact model). We further verified the accuracy of the result of the FEA using model experiment...
September 28, 2016: Computer Methods in Biomechanics and Biomedical Engineering
Shu-Fen Chuang, Pin-Sheng Huang, Terry Yuan-Fang Chen, Lo-Hao Huang, Ko-Chih Su, Chi-Han Chang
OBJECTIVES: To investigate the effects of light curing protocols on the shrinkage behaviors, contraction stress, and microleakage in composite restorations by an experimental-numerical hybrid analysis. METHODS: Three groups of human molars were collected to receive different light-curing protocols: vertical or oblique curing at regular intensity, and vertical curing at reduced intensity. For each tooth, the composite fillings were consecutively placed under unbonded and bonded states, and their shrinkage behaviors were examined with a digital image correlation (DIC) technique...
September 23, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Violeta Melinte, Tinca Buruiana, Andreea Chibac, Mihai Mares, Horia Aldea, Emil C Buruiana
OBJECTIVE: To achieve bisphenol A glycerolate dimethacrylate (BisGMA) analogs with reduced viscosity to be used in the formulation of dental adhesives containing biocidal components. METHODS: A series of low-viscosity BisGMA derivatives (η: 39-12Pas) modified with 30, 60 and, respectively 80mol% carboxylic acid units were synthesized and characterized. Hydrogen bonding interactions in our monomers, the photopolymerization behavior and implicitly the conversion degree (DC) for some experimental adhesive formulations containing acid-modified BisGMA, commercial BisGMA (only in F1-F3), triethyleneglycol dimethacrylate and 2-hydroxyethyl methacrylate were examined by FTIR spectroscopy...
September 23, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Valeria B Gotti, Américo B Correr, Steven H Lewis, Victor P Feitosa, Lourenço Correr-Sobrinho, Jeffrey W Stansbury
OBJECTIVE: To assess the influence of hydrophilicity of reactive nanogels on the mechanical performance of dental adhesives and microtensile bond strength (μTBS) to dentin after 24h or 3 months of aging. METHODS: A series of three nanogels were synthesized: NG1-IBMA/UDMA; NG2-HEMA/BisGMA; NG3-HEMA/TE-EGDMA. The nanogels were dispersed in solvent, HEMA or BisGMA/HEMA. The degree of conversion (DC) of the materials was measured and the flexural modulus of these polymers was evaluated in dry or wet conditions...
September 21, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
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