scholarly journals Wear performance of bovine tooth enamel against translucent tetragonal zirconia polycrystals after different surface treatments

2014 ◽  
Vol 33 (6) ◽  
pp. 811-817 ◽  
Author(s):  
Mai HARA ◽  
Yusuke TAKUMA ◽  
Toru SATO ◽  
Taku KOYAMA ◽  
Masao YOSHINARI
Keyword(s):  
Tooth Enamel ◽  
Tetragonal Zirconia ◽  
Surface Treatments ◽  
Wear Performance

Two-body wear performance of dental colored zirconia after different surface treatments

2016 ◽  
Vol 116 (4) ◽  
pp. 584-590 ◽  
Author(s):  
Yunyang Bai ◽  
Jing Zhao ◽  
Wenjie Si ◽  
Xinzhi Wang
Keyword(s):  
Surface Treatments ◽  
Wear Performance

scholarly journals Y-TZP surface treatments and their effects on the bond strength to resin cement

2019 ◽  
Vol 18 ◽  
pp. e190918
Author(s):  
Michele Mirian May ◽  
Ana Maria Estivalete Marchionatti ◽  
Luiz Felipe Valandro ◽  
Edson Luiz Foletto ◽  
Lucio Strazzabosco Dorneles ◽  
...  
Keyword(s):  
Bond Strength ◽  
Tetragonal Zirconia ◽  
Silica Coating ◽  
Surface Treatments ◽  
Resin Cement ◽  
Air Abrasion ◽  
Universal Primer ◽  
Alumina Particles ◽  
Bond Strengths ◽  
Microshear Bond Strength

Aim: This study evaluated the effect of surface treatments of yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramics on their bond strength to a resin cement. Methods: Seventy zirconia blocks (6 × 6 × 2 mm3, IPS e.max ZirCAD) were assigned into 7 groups (n=10) – as-sintered (AS), no treatment; tribochemical silica coating + silanization (TBS; Cojet-sand; ProSil); airabrasion with 45 μm alumina particles + universal primer (AAP; Monobond®Plus); fusion sputtering (FS); SiO2 nanofilm + silanization (SN; ProSil); FS+SN+ silanization (FSSN; ProSil); FS+SN+Universal Primer (FSSNP; Monobond®Plus). Afterwards, a resin cement (RelyX™ ARC) was applied inside cylinders (Ø = 0.96 mm × 1 mm height) placed on the zirconia surfaces. Microshear bond strength tests (μSBS) were carried out (1 mm/min). Failure and phase transformation analysis were performed. Bond strength data (MPa) were subjected to Kruskal-Wallis/Mann Whitney tests. Results: TBS (27 ± 1.2) and AAP (24.7 ± 0.8) showed higher bond strengths than the other groups, followed by FSSNP (15.5 ± 4.2) and FSSN (13.3 ± 3.6). FS (3.4 ± 0.44) and SN (9.5 ± 2.7) showed the lowest values (p < 0.001). Most of the specimens exhibited an adhesive failure. Conclusion: Air-abrasion by silica-coated alumina particles followed by silanization or by alumina particles followed by universal primer resulted in the highest resin bond strength to zirconia. Fusion sputtering and silica nanofilm deposition induced low strengths. However, when these methods are applied in combination and with a primer (FSSN and FSSNP), higher bond strengths may be achieved. Low bond strengths are obtained when no zirconia treatment is performed.

Cycle-dependent in vitro wear performance of dental ceramics after clinical surface treatments

2016 ◽  
Vol 53 ◽  
pp. 49-58 ◽  
Author(s):  
Verena Preis ◽  
Katharina Grumser ◽  
Sibylle Schneider-Feyrer ◽  
Michael Behr ◽  
Martin Rosentritt
Keyword(s):  
Surface Treatments ◽  
Dental Ceramics ◽  
Wear Performance ◽  
Cycle Dependent

scholarly journals Polishing of Ground Y-TZP Ceramic is Mandatory for Improving the Mechanical Behavior

2018 ◽  
Vol 29 (5) ◽  
pp. 483-491 ◽  
Author(s):  
Camila Pauleski Zucuni ◽  
Luis Felipe Guilardi ◽  
Marilia Pivetta Rippe ◽  
Gabriel Kalil Rocha Pereira ◽  
Luiz Felipe Valandro
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Mechanical Behavior ◽  
Structural Reliability ◽  
Mechanical Performance ◽  
Tetragonal Zirconia ◽  
Surface Treatments ◽  
Phase Content ◽  
Characteristic Strength ◽  
M Phase

Abstract It evaluated the effect of aging by Low Temperature Degradation (LTD), executed after post- processing surface treatments (polishing, heat treatment and glazing), on the surface characteristics (micromorphology and roughness) and on the structural stability (phase transformation and mechanical behavior-flexural strength and structural reliability) of a ground yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramic. Discs of Y-TZP (VITA In-Ceram YZ) were manufactured (ISO:6872-2015; 15 mm in diameter and 1.2 ± 0.2 mm in thickness) and randomly assigned into 10 groups according two factors: “aging” in 2 levels (with or without) and “surface treatment” in 5 levels (Ctrl: as-sintered; Gr: grinding with coarse diamond bur; Gr + HT: grinding plus heat treatment; Gr + Pol: grinding plus polishing; Gr + Gl: grinding plus glazing). Roughness (n=30), biaxial flexural test (n=30), phase transformation (n=2), and surface topography (n=2) analyses were performed. Aging led to an intense increase in monoclinic (m) phase content for all the tested conditions, being the as-sintered samples (Ctrl= 65.6%) more susceptible to the t-m phase transformation. Despite of increasing the m-phase content, aging was not detrimental for characteristic strength (except to the grinding condition). There was no significant reduction in the Weibull modulus after surface treatments. Additionally, heat treatment and glazing after grinding led to a decrease in characteristic strength, while polishing presented the highest characteristic strength values. Thus, polishing is mandatory after grinding the Y-TZP ceramic, while performing glazing or heat-treatment alone after grinding lead to the worst mechanical performance.

scholarly journals Novel Femto Laser Patterning of High Translucent Zirconia as an Alternative to Conventional Particle Abrasion

2021 ◽  
Vol 9 (2) ◽  
pp. 20
Author(s):  
Emmanouil-George C. Tzanakakis ◽  
Anastasia Beketova ◽  
Lambrini Papadopoulou ◽  
Eleana Kontonasaki ◽  
Ioannis G. Tzoutzas
Keyword(s):  
Femtosecond Laser ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Tetragonal Zirconia ◽  
Treated Group ◽  
Glass Beads ◽  
Surface Treatments ◽  
Dihydrogen Phosphate ◽  
Promising Alternative

Background: currently applied surface treatments for zirconia bonding may create undesired microcracks and surface flaws. The aim of the present study was to evaluate the efficacy of alternative surface treatments on the shear bond strength of high translucency zirconia to 10-Methacryloyloxydecyl dihydrogen phosphate (MDP)-containing resin-based cement. Methods: fifty disk-shaped specimens (10 mm × 5 mm) were fabricated from a commercial yttria-stabilized zirconia with 5 mole% yttrium oxide tetragonal zirconia polycrystal (5Y-TZP), and underwent air-abrasion with alumina particles (50 μm-AL50 and 90 μm-AL90), glass beads (GB 10–60 μm), and ablation with femtosecond laser (FEMTO). Shear bond strength was evaluated with a universal testing machine under a crosshead speed of 0.5 mm/min until fracture. Fracture type was evaluated with an optical stereomicroscope. Differences among groups were evaluated by one-way ANOVA and Bonferroni pairwise comparison tests (p < 0.05). Results: the highest shear bond strength values were presented by the laser treated group (23.97 ± 3.7 MPa). No statistically significant differences were found among the Cl, Al50, Al90 and FEMTO groups. The lowest mean value was presented by the glass-beads treated group (11.93 ± 2.88 MPa) which was significantly lower compared to all other groups (p < 0.001). Conclusions: under the limitations of this in vitro study, femtosecond laser treatment of High-translucent monolithic zirconia (HTZ) ceramics is a promising alternative method for the mechanical retention of resin cements.

scholarly journals The Importance of MDP Priming, Silica Blasting or Glazing on the Retention Force of Y-TZP Copings to Varying Geometry Tooth Abutments

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 315
Author(s):  
Nathália C. Ramos ◽  
Larissa M.M. Alves ◽  
Gabriela F. Ramos ◽  
Marco Antonio Bottino ◽  
Renata M. Melo ◽  
...  
Keyword(s):  
Tetragonal Zirconia ◽  
Acrylic Resin ◽  
Surface Treatments ◽  
Dihydrogen Phosphate ◽  
Convergence Angle ◽  
Retention Force ◽  
Mechanical Cycling ◽  
Significant Difference ◽  
Zirconia Crowns ◽  
Made In

To evaluate the influence of the convergence angle of tooth preparations and abutments height and several surface treatments for zirconia copings through the tensile retention test. 120 crown preparations were made in Nema G10 with the maxillary first molar anatomy. In total, 60 abutments of 5 mm height were divided into two groups of 6° and 20° convergence angles of tooth preparations, and 60 abutments with a convergence angle of tooth preparations of 12° were divided into groups of 4 and 6 mm heights. Three surface treatments used were MDP-primer (10-Methacryloyloxydecyl dihydrogen phosphate), glazing or silica blasting. The abutments were scanned to make zirconia copings (3Y-TZP–Yttria-Stabilized Tetragonal Zirconia Polycrystals, Vita In-Ceram YZ). After cementation, the mechanical cycling (2 × 106 cycles, 3 Hz, 100 N) was performed to aging. After cycling, the copings were tested in tensile (1 kN load cell; 0.5 mm/s speed). Both abutments support base and copings were embedded in acrylic resin with the aid of a device that maintained the long axis perpendicular to the horizontal plane. Data were analyzed with the two-way ANOVA and Tukey test (95%). ANOVA revealed that the convergence angle influenced the tensile retention (p = 0.0232), but the abutments height showed no statistically significant difference (p = 0.086). The MDP-primer and silica blasting showed higher retention forces in the specimens with height variations. For bonded zirconia crowns, the retention force provided by high convergence angle preparation is critical and cannot be improved by surface treatments. For short and long crown preparations, MDP-based Primers or Silica blasting are advisable to aid restoration longevity.

scholarly journals Bonding of Y-TZP to Dentin: Effects of Y-TZP Surface Conditioning, Resin Cement Type, and Aging

2014 ◽  
Vol 39 (3) ◽  
pp. 291-300 ◽  
Author(s):  
MA Bottino ◽  
C Bergoli ◽  
EG Lima ◽  
SMS Marocho ◽  
RO Souza ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Tetragonal Zirconia ◽  
Acrylic Resin ◽  
Surface Treatments ◽  
Resin Cement ◽  
Occlusal Plane ◽  
Resin Cements ◽  
And Storage ◽  
Tetragonal Zirconia Polycrystal

SUMMARY Purpose To evaluate the effects of two surface treatments, aging, and two resin cements on shear bond strength between dentin and yttrium-stabilized tetragonal zirconia polycrystal ceramic (Y-TZP). Materials and Methods Eighty human molars were embedded in acrylic resin and sectioned 3 mm below the occlusal plane. These teeth and 80 cylindrical Y-TZP specimens (height, 4 mm; diameter, 3.4 mm) were divided into eight groups (n=10) using the following factors: Y-TZP surface treatment (Vi: low-fusing porcelain [vitrification] + hydrofluoric acid etching + silanization or Si: tribochemical silicatization); cementation strategies (PF: Panavia or CC: Clearfil); and storage (nonaging or aging). Bonding surfaces of 40 Y-TZP specimens received Vi treatment, and the rest received Si treatment. Half of the ceramic-tooth assemblies were cemented with Panavia, the rest with Clearfil. Shear tests were executed using 0.4-mm–thick wire at 0.5 mm/min. Data were analyzed by three-way analysis of variance and Tukey test (α=0.05). Fractures were analyzed. Results Y-TZP surface treatments did not affect bond strength (p=0.762, Vi = Si), while resin cements (p&lt;0.001, Panavia &gt; Clearfil) and aging (p=0.006, nonaging &gt; aging) showed a significant effect. Most failures were in adhesive at dentin-cement interfaces; no failure occurred between zirconia and cement. Conclusion When Y-TZP ceramic is bonded to dentin, the weakest interface is that between dentin and resin cement. The resin cement/Y-TZP interface was less susceptible to failures, owing to Y-TZP surface treatments.

scholarly journals Effect of surface treatments on repair with composite resin of a partially monoclinic phase transformed yttrium-stabilized tetragonal zirconia

2018 ◽  
Vol 119 (2) ◽  
pp. 286-291 ◽  
Author(s):  
Beatriz Regalado Galvão Ribeiro ◽  
Marilia Regalado Galvão Rabelo Caldas ◽  
Antonio Alves Almeida ◽  
Renata Garcia Fonseca ◽  
Gelson Luis Adabo
Keyword(s):  
Monoclinic Phase ◽  
Composite Resin ◽  
Tetragonal Zirconia ◽  
Surface Treatments ◽  
Effect Of Surface

Mechanical Characterization and Wear Performance of WC – ZrO2 – Ni Cermets Produced by Hot Isostatic Pressing

2011 ◽  
Vol 214 ◽  
pp. 344-348 ◽  
Author(s):  
Irina Hussainova ◽  
Anton Smirnov ◽  
Maksim Antonov
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Mechanical Characterization ◽  
Hot Isostatic Pressing ◽  
Tetragonal Zirconia ◽  
Binder Content ◽  
Nickel Metal ◽  
Wear Performance ◽  
Isostatic Pressing ◽  
Metal Binder

Microstructure analysis and mechanical characterization were performed on newly developed WC based and yttria stabilized tetragonal zirconia (ZrO2) doped cermets with nickel metal binder produced by hot isostatic pressing. The cermets have reached higher than 99% of theoretical density after processing at 1700 0C and 206 MPa for 1 hour. Zirconia has appeared to form agglomerates of about 1 µm and suppressed carbide grains growth. Hardness of zirconia doped materials was of the same magnitude and fracture toughness was slightly higher as compared to conventionally produced WC-Co hardmetals of the same metal binder content while wear resistance in conditions of erosion and abrasion in silica media is increased by two fold.

Sign in / Sign up

Export Citation Format

Share Document