Influence of different but compatible all-ceramic materials and bonding systems on dentin bonding properties

2021 ◽  
Vol 11 (1) ◽  
pp. 116-122
Author(s):  
Aoxiang Luo ◽  
Yao Yao ◽  
Li Zhang ◽  
Yuejing Chen
Keyword(s):  
Ceramic Material ◽  
Bonding Strength ◽  
Conversion Rate ◽  
Ceramic Materials ◽  
Dentin Bonding ◽  
Relyx Unicem ◽  
Conversion Rates ◽  
All Ceramic ◽  
Bonding Properties ◽  
Bonding Systems

This study aimed to investigate the effects of various compatible all-ceramic materials and bonding systems, on the bonding properties of dentin. Five types of commonly used all-ceramic materials (Cerec Blocs, IPS e. max Press, IPS e. max ZirCAD, Incoris Alumina, In-Ceram Alumina) were bonded with three types of adhesives (Multilink N, Variolink N, Relyx Unicem) for nuclear porcelain tile preparation. We evaluated the polymerization conversion rates, shear bonding strength (SBS), and micro-tensile bond strength (TBS) for each combination. The polymerization conversion rates, SBS and TBS differed significantly for all 3 adhesives with each all-ceramic group (P < 0.05). The Relyx Unicem agent had higher adhesive properties compared with the Variolink N and Multilink N agents (P < 0.05). The polymerization conversion rate, SBS and TBS of the five all-ceramic materials differed significantly with each adhesive (P < 0.05). The Cerec Blocs had the highest adhesive performance (P < 0.05). The polymerization conversion rate of adhesives differed with each all-ceramic material, while the dentin bonding strength differed with each all-ceramic material and adhesive. Clinically, all-ceramic materials with a high transparency and low refraction are recommended. For opaque all-ceramic restorations, the curing light time and polymerization reaction rate should be increased to improve the dentin bonding performance.

Total etch dentin bonding systems: scanning electron microscopy of the resin-dentin hybrid layer

1992 ◽  
Vol 50 (2) ◽  
pp. 1092-1093
Author(s):  
Jorge Perdigao
Keyword(s):  
Composite Resin ◽  
Mechanical Interlocking ◽  
Hybrid Layer ◽  
Agent Based ◽  
Dentin Bonding ◽  
Acid Agent ◽  
Bond Strengths ◽  
Main Component ◽  
Bonding Systems ◽  
New Generation

In 1955, Buonocore introduced the etching of enamel with phosphoric acid. Bonding to enamel was created by mechanical interlocking of resin tags with enamel prisms. Enamel is an inert tissue whose main component is hydroxyapatite (98% by weight). Conversely, dentin is a wet living tissue crossed by tubules containing cellular extensions of the dental pulp. Dentin consists of 18% of organic material, primarily collagen. Several generations of dentin bonding systems (DBS) have been studied in the last 20 years. The dentin bond strengths associated with these DBS have been constantly lower than the enamel bond strengths. Recently, a new generation of DBS has been described. They are applied in three steps: an acid agent on enamel and dentin (total etch technique), two mixed primers and a bonding agent based on a methacrylate resin. They are supposed to bond composite resin to wet dentin through dentin organic component, forming a peculiar blended structure that is part tooth and part resin: the hybrid layer.

Numerical Modeling and Experimental Characterization of the Pyroplasticity in Ceramic Materials during Sintering

2010 ◽  
Vol 62 ◽  
pp. 203-208 ◽  
Author(s):  
Pasquale Bene ◽  
Danilo Bardaro ◽  
Daniela Bello ◽  
Orazio Manni
Keyword(s):  
Ceramic Material ◽  
Ceramic Materials ◽  
Constitutive Law ◽  
Beam Deflection ◽  
Firing Cycle ◽  
Experimental Characterization ◽  
Viscosity Increase ◽  
Ceramic Components ◽  
Deflection Theory ◽  
Sintering Shrinkage

The aim of the work is the study of the pyroplasticity in ceramic materials in order to simulate the deformations of complex ceramic component during sintering. A ceramic material undergoing densification can be treated as a linear viscous material. Generally, the viscosity decreases as the temperature increases, however the densification and the consequent grain growth, result in a viscosity increase. A bending creep test is proposed for measuring the change in viscosity of the ceramic material during densification. Equations, based on beam deflection theory, are derived to determine the viscosity during the whole firing cycle by measuring the deflection in the centre of specimens. In addition, dilatometric analyses are performed to measure the sintering shrinkage and the specimen density, which continuously changes during the sintering process. On the basis of an accurate experimental characterization the parameters of Maxwell viscoelastic constitutive law are derived. A numerical-experimental procedure has been adopted in order to calibrate the numerical model that, finally, has been used to predict the pyroplastic deformations of complex ceramic components.

Influence of the supporting die structures on the fracture strength of all-ceramic materials

2011 ◽  
Vol 16 (4) ◽  
pp. 1105-1110 ◽  
Author(s):  
Munir Tolga Yucel ◽  
Isa Yondem ◽  
Filiz Aykent ◽  
Oğuz Eraslan
Keyword(s):  
Fracture Strength ◽  
Ceramic Materials ◽  
All Ceramic

PLZT:Nd3+ Ceramics for Photonic Applications

2012 ◽  
Vol 82 ◽  
pp. 32-37 ◽  
Author(s):  
Malgorzata Plonska ◽  
Wojciech A. Pisarski ◽  
Beata Wodecka-Dus ◽  
Lukasz Cienki
Keyword(s):  
Optical Properties ◽  
High Purity ◽  
Raw Materials ◽  
Ceramic Materials ◽  
Ceramic Powders ◽  
Pressing Method ◽  
All Ceramic ◽  
Neodymium Concentration ◽  
Sintering Conditions ◽  
Dielectric And Optical Properties

In the present work the influence of neodymium concentration (0-1at-%) and sintering conditions on 8/65/35 PLZT:Nd3+ ceramics were studied. All ceramic powders were synthesized by MOM technique from high purity raw materials (>99,9%), and subsequently sintered by free sintering and hot uniaxial pressing method. To analyze the powders and ceramics more the XRD, EDS SEM, and ferroelectric measurements were performed. Optical spectra were examined for all prepared samples, and their optical properties were analyzed using reflectance, excitation and luminescence measurements. The study gives a detailed account of the relationships between doping and preparing conditions on the basic physical and dielectric and optical properties of obtained ceramic materials.

The adhesive potential of dentin bonding systems assessed using cuspal deflection measurements and cervical microleakage scores

2014 ◽  
Vol 30 (10) ◽  
pp. 1154-1160 ◽  
Author(s):  
Ahmed Sultan ◽  
Advan Moorthy ◽  
Garry J.P. Fleming
Keyword(s):  
Dentin Bonding ◽  
Bonding Systems

scholarly journals Morphology and thickness of the diffusion of resin through demineralized or unconditioned dentinal matrix

2002 ◽  
Vol 16 (2) ◽  
pp. 115-120 ◽  
Author(s):  
César Augusto Galvão Arrais ◽  
Marcelo Giannini
Keyword(s):  
Adhesive System ◽  
Adhesive Systems ◽  
Hybrid Layer ◽  
Human Teeth ◽  
Bonding Agents ◽  
Mean Values ◽  
Dentin Bonding ◽  
Occlusal Surfaces ◽  
The One ◽  
Bonding Systems

The formation of a hybrid layer is the main bonding mechanism of current dentin-bonding systems. This study evaluated the morphology and thickness of the resin-infiltrated dentinal layer after the application of adhesive systems. The dentin-bonding agents were evaluated on flat dentinal preparations confected on the occlusal surfaces of human teeth. The test specimens were prepared and inspected under scanning electron microscopy at a magnification of X 2,000. The adhesive systems were responsible for different hybrid layer thicknesses (p < 0.05), and the mean values were: for Scotchbond MP Plus (SM), 7.41 ± 1.24mum; for Single Bond (SB), 5.55 ± 0.82mum; for Etch & Prime 3.0 (EP), 3.86 ± 1.17mum; and for Clearfil SE Bond (CB), 1.22 ± 0.45mum. The results suggest that the conventional three-step adhesive system (SM) was responsible for the thickest hybrid layer, followed by the one-bottle adhesive (SB). The self-etching adhesives, EP and CB, produced the formation of the thinnest hybrid layers.

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