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https://www.readbyqxmd.com/read/28597007/tensile-bond-strength-of-so-called-universal-primers-and-universal-multimode-adhesives-to-zirconia-and-lithium-disilicate-ceramics
#1
Adham Elsayed, Feras Younes, Frank Lehmann, Matthias Kern
PURPOSE: To test the bond strength and durability after artificial aging of so-called universal primers and universal multimode adhesives to lithium disilicate or zirconia ceramics. MATERIALS AND METHODS: A total of 240 ceramic plates, divided into two groups, were produced and conditioned: 120 acid-etched lithium disilicate plates (IPS e.max CAD) and 120 air-abraded zirconia plates (Zenostar T). Each group was divided into five subgroups (n = 24), and a universal restorative primer or multimode universal adhesive was used for each subgroup to bond plexiglas tubes filled with a composite resin to the ceramic plate...
June 8, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28569445/can-cleansing-regimens-effectively-eliminate-saliva-contamination-from-lithium-disilicate-ceramic-surface
#2
Alexandre L S Borges, Sumana Posritong, Mutlu Özcan, Fernanda Campos, Renata Melo, Marco C Bottino
This study evaluated the effect of cleaning protocols on the bond strength of resin cement to glass-ceramic. Ceramic specimens (N=120, n=12 per group) were etched with hydrofluoric acid and rinsed with water. After saliva contamination, specimens were cleaned as follows: water, 37% H3PO4, cleaning-paste (Ivoclean), or isopropanol. Non-contaminated specimens acted as the control. Resin cement was bonded to the specimens, and tested either after 24 h or x5000 thermocycling. Both the cleaning method (p=0.001) and the storage conditions (p=0...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28459245/does-post-etching-cleaning-influence-bond-strength-of-lithium-disilicate-laminate-veneers
#3
Ana Paula Rodrigues Magalhães, Rafael Almeida Decurcio, Gerardo Patricio Durán Ojeda, Terence Romano Teixeira, Paula de Carvalho Cardoso
This paper aims to present a clinical case of laminate veneers in lithium disilicate (LD) reinforced ceramic, complemented with scanning electron microscopy and energy dispersive x-ray spectroscopy analysis of this ceramic's surfaces submitted to some of the different post-etching cleaning protocols proposed by literature. Many dentists are applying all-ceramic restorations, especially veneers, with the most applied material being LD, due to its good mechanical properties, esthetics, and ability to adhere to tooth substrate...
May 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28243304/comparison-of-bond-strength-of-metal-and-ceramic-brackets-bonded-with-conventional-and-high-power-led-light-curing-units
#4
Javad Chalipa, Yasamin Farajzadeh Jalali, Fatemeh Gorjizadeh, Pedram Baghaeian, Mohammad Hashem Hoseini, Omid Mortezai
OBJECTIVES: The aim of this study was to evaluate the effect of conventional and high-power light emitting diode (LED) light curing units on shear bond strength (SBS) of metal and ceramic brackets to tooth surface. MATERIALS AND METHODS: Forty sound bovine maxillary central incisors were used for the study. The teeth were divided into four groups (n=10). Teeth surfaces were etched with 37% phosphoric acid for 20 seconds. After applying a uniform layer of adhesive primer on the etched enamel, composite was placed on the base of brackets...
November 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28174009/ceramic-strengthening-by-tuning-the-elastic-moduli-of-resin-based-luting-agents
#5
Aloísio O Spazzin, Ataís Bacchi, Rodrigo Alessandretti, Mateus B Santos, Gabriela R Basso, Jason Griggs, Rafael R Moraes
OBJECTIVE: Resin-based luting agents (RBLAs) with tuned elastic moduli (E) were prepared and their influence on the strengthening, reliability, and mode of failure of luted feldspar ceramic was investigated. METHODS: RBLAs with low E (2.6GPa), intermediate E (6.6GPa), and high E (13.3GPa) were prepared and used to coat acid-etched ceramic disks. Positive (untreated ceramic) and negative (acid-etched ceramic) control groups were tested. The response variables (n=30) were biaxial flexural strength (σbf, MPa), characteristic strength (σ0, MPa), and Weibull modulus at the ceramic surface (z=0) and luting agent surface (z=-t2)...
February 4, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27982231/low-fusing-porcelain-glaze-application-on-3y-tzp-surfaces-can-enhance-zirconia-porcelain-adhesion
#6
Lígia Tiaki Yamamoto, Vinícius Anéas Rodrigues, Lucio Strazzabosco Dornelles, Marco Antonio Bottino, Luiz Felipe Valandro, Renata Marques de Melo
The aim of this study was to assess whether surface treatment improves zirconia-porcelain adhesion. The 3Y-TZP blocks were cut into squares, then polished and sintered. The zirconia surface treatments were performed as follows: no treatment (C); tribochemical silica coating (TBS); glaze application + hydrofluoric acid etching (GA); glaze application + hydrofluoric acid etching + silanization (GAS); deposition of silica nanofilm (NF). After treatments, veneering porcelain cylinders (3.3 x 3.3 mm) were built up on all specimens and fired...
September 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27933322/silicone-disclosing-material-used-after-ceramic-surface-treatment-reduces-bond-strength
#7
Sara Fraga, Sara Cioccari Oliveira, Gabriel Kalil Rocha Pereira, Pieter Beekman, Marília Pivetta Rippe, Cornelis J Kleverlaan
PURPOSE: To evaluate the effect of a silicone disclosing procedure performed at different timepoints on the shear bond strength (SBS) of cements (self-adhesive composite cement, self-etch composite cement, resin-reinforced glass-ionomer cement) to different substrates (zirconia, lithium disilicate, bovine dentin). MATERIALS AND METHODS: The substrate/cement combinations were assigned to two groups (n = 15) according to the timepoint, at which the vinyl polyether silicone disclosing agent was applied: after (experimental groups, EXP) or before (control groups, CTRL) specific micromechanical treatments of the substrate surface...
2016: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/27892839/influence-of-adhesive-type-and-placement-technique-on-postoperative-sensitivity-in-posterior-composite-restorations
#8
Trf Costa, M Rezende, A Sakamoto, B Bittencourt, P Dalzochio, A D Loguercio, A Reis
PURPOSE: This double blind, randomized clinical trial compared the postoperative sensitivity of the placement technique (incremental and bulk fill) in posterior composite resin restorations bonded with two different adhesive strategies (self-etch and etch-and-rinse). METHODS: Posterior dental cavities of 72 participants (n=236), with a cavity depth of at least 3 mm, were randomly divided into four groups. The restorations were bonded using either the etch-and-rinse Tetric N-Bond (Ivoclar Vivadent) or the self-etch Tetric N-Bond SE (Ivoclar Vivadent)...
March 2017: Operative Dentistry
https://www.readbyqxmd.com/read/27692582/effect-of-silane-contamination-on-dentin-bond-strength
#9
Liang Chen, Barry D Hammond, Gary Alex, Byoung In Suh
STATEMENT OF PROBLEM: Intraoral repair of porcelain or other silica-based ceramics typically requires the use of silane in the repair protocol. Some porcelain intraoral repairs also involve bonding to exposed or involved tooth tissues including dentin. A study is needed to evaluate whether the cross-contamination of dentin with silane affects bond strength to this tissue. PURPOSE: The purpose of this in vitro study was to investigate the effect of silane cross-contamination on dentin bond strength...
September 28, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27647389/does-acid-etching-morphologically-and-chemically-affect-lithium-disilicate-glass-ceramic-surfaces
#10
Yukinori Maruo, Goro Nishigawa, Masao Irie, Kumiko Yoshihara, Takuya Matsumoto, Shogo Minagi
BACKGROUND: This study evaluated the surface morphology, chemical composition and adhesiveness of lithium disilicate glass ceramic after acid etching with hydrofluoric acid or phosphoric acid. METHODS: Lithium disilicate glass ceramic specimens polished by 600-grit silicon carbide paper were subjected to one or a combination of these surface treatments: airborne particle abrasion with 50-μm alumina (AA), etching with 5% hydrofluoric acid (HF) or 36% phosphoric acid (Phos), and application of silane coupling agent (Si)...
January 26, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/27638179/effects-of-pretreatments-and-hydrothermal-aging-on-biaxial-flexural-strength-of-lithium-di-silicate-and-mg-psz-ceramics
#11
Maria André, Wen Kou, Göran Sjögren, Anders Sundh
OBJECTIVES: To evaluate the effect of specimen thickness, pretreatment and hydrothermal aging on the biaxial flexural strength (BFS) of lithium di-silicate glass (e.max Cad) and magnesia-stabilized zirconia (ZirMagnum) ceramic discs. METHODS: The e.max Cad discs was studied: i) crystallized, ii) crystallized and glazed and iii) crystallized, glazed and unglazed side etched with hydrofluoric acid. The ZirMagnum discs were studied: i) as delivered, ii) after sandblasting and iii) after heat treatment similar to veneering...
September 13, 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27418002/light-transmittance-and-surface-roughness-of-a-feldspathic-ceramic-cad-cam-material-as-a-function-of-different-surface-treatments
#12
Çağrı Ural, İbrahim Duran, Betül Evmek, İdris Kavut, Seda Cengiz, Emir Yuzbasioglu
BACKGROUND: The aim of the present study was to determine the effect of different surface treatments on light transmission of aesthetic feldspathic ceramics used in CAD-CAM chairside restorations. METHODS: Forty eight feldspatic ceramic test specimens were prepared from prefabricated CAD-CAM blocks by using a slow speed diamond saw. Test specimens were prepared and divided into 4 groups (n = 12). In the control group, no surface treatments were applied on the feldspathic ceramic surfaces...
2016: BMC Oral Health
https://www.readbyqxmd.com/read/27299181/plasma-enhanced-chemical-vapor-deposition-pe-cvd-yields-better-hydrolytical-stability-of-biocompatible-siox-thin-films-on-implant-alumina-ceramics-compared-to-rapid-thermal-evaporation-physical-vapor-deposition-pvd
#13
Frederik Böke, Ignacio Giner, Adrian Keller, Guido Grundmeier, Horst Fischer
Densely sintered aluminum oxide (α-Al2O3) is chemically and biologically inert. To improve the interaction with biomolecules and cells, its surface has to be modified prior to use in biomedical applications. In this study, we compared two deposition techniques for adhesion promoting SiOx films to facilitate the coupling of stable organosilane monolayers on monolithic α-alumina; physical vapor deposition (PVD) by thermal evaporation and plasma enhanced chemical vapor deposition (PE-CVD). We also investigated the influence of etching on the formation of silanol surface groups using hydrogen peroxide and sulfuric acid solutions...
July 20, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27282642/effects-of-mechanical-and-chemical-surface-treatments-on-the-resin-glass-ceramic-adhesion-properties
#14
Vanthana Sattabanasuk, Paleenee Charnchairerk, Lada Punsukumtana, Michael F Burrow
AIM: Intraoral repair of fractured ceramic restorations using resin composite is practical for dental treatment. In the present study, we investigated whether differences in surface treatments for glass ceramic would affect resin adhesion. METHODS: Leucite-reinforced glass ceramic plates (IPS Empress Esthetic) were ground with 320-grit silicon carbide paper, cleaned using phosphoric acid, and then etched with hydrofluoric acid (IPS Ceramic Etching Gel) or left unetched, and silanized using silane coupling agent (RelyX Ceramic Primer) or kept unsilanized...
August 2017: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/27193741/microfluidic-based-photocatalytic-microreactor-for-environmental-application-a-review-of-fabrication-substrates-and-techniques-and-operating-parameters
#15
REVIEW
Susmita Das, Vimal Chandra Srivastava
Photochemical technology with microfluidics is emerging as a new platform in environmental science. Microfluidic technology has various advantages, like better mixing and a shorter diffusion distance for the reactants and products; and uniform distribution of light on the photocatalyst. Depending on the material type and related applications, several fabrication techniques have been adopted by various researchers. Microreactors have been prepared by various techniques, such as lithography, etching, mechanical microcutting technology, etc...
June 8, 2016: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/27148372/effect-of-ceramic-surface-treatments-after-machine-grinding-on-the-biaxial-flexural-strength-of-different-cad-cam-dental-ceramics
#16
Hossein Bagheri, Tabassom Hooshmand, Farzaneh Aghajani
OBJECTIVES: This study aimed to evaluate the effect of different ceramic surface treatments after machining grinding on the biaxial flexural strength (BFS) of machinable dental ceramics with different crystalline phases. MATERIALS AND METHODS: Disk-shape specimens (10mm in diameter and 1.3mm in thickness) of machinable ceramic cores (two silica-based and one zirconia-based ceramics) were prepared. Each type of the ceramic surfaces was then randomly treated (n=15) with different treatments as follows: 1) machined finish as control, 2) machined finish and sandblasting with alumina, and 3) machined finish and hydrofluoric acid etching for the leucite and lithium disilicate-based ceramics, and for the zirconia; 1) machined finish and post-sintered as control, 2) machined finish, post-sintered, and sandblasting, and 3) machined finish, post-sintered, and Nd;YAG laser irradiation...
September 2015: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/27141250/the-effect-of-silane-applied-to-glass-ceramics-on-surface-structure-and-bonding-strength-at-different-temperatures
#17
Tevfik Yavuz, Oguz Eraslan
PURPOSE: To evaluate the effect of various surface treatments on the surface structure and shear bond strength (SBS) of different ceramics. MATERIALS AND METHODS: 288 specimens (lithium-disilicate, leucite-reinforced, and glass infiltrated zirconia) were first divided into two groups according to the resin cement used, and were later divided into four groups according to the given surface treatments: G1 (hydrofluoric acid (HF)+silane), G2 (silane alone-no heat-treatment), G3 (silane alone-then dried with 60℃ heat-treatment), and G4 (silane alone-then dried with 100℃ heat-treatment)...
April 2016: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/27076825/effect-of-different-adhesive-strategies-on-microtensile-bond-strength-of-computer-aided-design-computer-aided-manufacturing-blocks-bonded-to-dentin
#18
Renato Roperto, Anna Akkus, Ozan Akkus, Lisa Lang, Manoel Damiao Sousa-Neto, Sorin Teich, Thiago Soares Porto
BACKGROUND: The aim of this study was to determine the microtensile bond strength (μTBS) of ceramic and composite computer aided design-computer aided manufacturing (CAD-CAM) blocks bonded to dentin using different adhesive strategies. MATERIALS AND METHODS: In this in vitro study, 30 crowns of sound freshly extracted human molars were sectioned horizontally 3 mm above the cementoenamel junction to produce flat dentin surfaces. Ceramic and composite CAD/CAM blocks, size 14, were sectioned into slices of 3 mm thick...
March 2016: Dental Research Journal
https://www.readbyqxmd.com/read/27004277/fracture-strength-of-monolithic-all-ceramic-crowns-on-titanium-implant-abutments
#19
Michael Weyhrauch, Christopher Igiel, Herbert Scheller, Gernot Weibrich, Karl Martin Lehmann
PURPOSE: The fracture strengths of all-ceramic crowns cemented on titanium implant abutments may vary depending on crown materials and luting agents. The purpose of this study was to examine differences in fracture strength among crowns cemented on implant abutments using crowns made of seven different monolithic ceramic materials and five different luting agents. MATERIALS AND METHODS: In total, 525 crowns (75 each of Vita Mark II, feldspathic ceramic [FSC]; Ivoclar Empress CAD, leucite-reinforced glass ceramic [LrGC]; Ivoclar e...
March 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/26936612/effect-of-short-duration-localized-carbamide-peroxide-application-to-remove-enamel-staining-on-bond-strength-of-resin-cement-to-enamel
#20
Jeril R Cooper, Nancy B Young, Van B Haywood, Don Mettenburg, Richard S Callan, Fredrick A Rueggeberg
UNLABELLED: Objective Peripheral enamel staining is often noticed after removal of long-term veneer or crown provisional restorations. Application of carbamide peroxide (CP) easily removes the stain, but the potential for immediate bonding with a resin-based cement is questionable. This project tested the short-term, shear bond strength of a commercial, photo-curable, resin cement to bovine enamel after application of a 10% concentration of CP placed for different exposure times. MATERIALS AND METHODS: Bovine enamel was flattened and polished...
May 2016: Journal of Esthetic and Restorative Dentistry
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