Shear Bond Strength of Resin Cement to Feldspathic CAD/CAM Ceramic Blocks; Conventional vs Self-etching Ceramic Primer

Abstract This study evaluated the effectiveness of a multi-mode adhesive (SBU-Scotch Bond Universal/3M) as a substitute for silica coating and silane application on the bonding of zirconia ceramics to resin cement. One-hundred and twenty sintered zirconia ceramic blocks (5 x 5 x 5 mm) were obtained, finished by grounding with silicon carbide paper (#600, #800, #1000 and #1200) and randomly divided into 12 groups (n=10) in accordance with the factors “surface treatment” (ScSi - silicatization + silanization; ScSBU - silicatization + SBU; SBU - SBU without photoactivation and SBUp - SBU photoactivated) and “ceramic” (Lava / 3M ESPE, Ceramill Zirconia / Amann Girrbach and Zirkonzahn / Zirkonzahn). Dual resin cement cylinders (RelyX Ultimate/3M ESPE) were subsequently produced in the center of each block using a silicon matrix (Ø=2 mm, h=5 mm) and photoactivated for 40 s (1200 mW/cm2). The samples were stored for 30 days in distilled water (37ºC) and submitted to shear bond strength test (1 mm/min, 100 KgF). Data (MPa) were analyzed under ANOVA (2 levels) and Tukey test (5%). Complementary analyzes were also performed. ANOVA revealed that only the factor “surface treatment” was significant (p=0.0001). The ScSi treatment (14.28A) promoted statistically higher bond strength values than the other ScSBU (9.03B), SBU (8.47B) and SBUp (7.82B), which were similar to each other (Tukey). Failure analysis revealed that 100% of the failures were mixed. The silica coating followed by the silanization promoted higher bond strength values of resin cement and ceramic, regardless of the zirconia ceramic or SBU.

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Influence of drying time of adhesive systems on the bond strength between resin cement and feldspathic ceramic

Brazilian Dental Science ◽

10.14295/bds.2016.v19i1.1194 ◽

2016 ◽

Vol 19 (1) ◽

pp. 88

Author(s):

Sabrina Alves Feitosa ◽

Isabela Gomes Moura ◽

Pedro Henrique Corazza ◽

Cesar Dalmolin Bergolli ◽

Clóvis Pagani ◽

...

Keyword(s):

Bond Strength ◽

Adhesive System ◽

Resin Cement ◽

Ceramic Surface ◽

Drying Time ◽

Ceramic Block ◽

Significant Difference ◽

Before And After ◽

Cad Cam ◽

Ceramic Blocks

Objective: This study evaluated the effect of drying times of two total-etch & rinse adhesives on the resin bond strength to a feldsphatic ceramic, before and after aging. Material and Methods: Feldsphatic-ceramic CAD-CAM bars were cut into blocks (12×10×4 mm) with a cutting machine (N = 32). Impressions were made of each ceramic block with silicone putty material and the negative space was filled with a composite resin. The bonding ceramic surface was etched with hydrofluoric acid, silanized, and the adhesive system (SB- Single Bond 2, 3M-ESPE; or PB- Prime & Bond NT, Dentsply) was applied. The samples were dried at different times (5, 10 and 15 s) before the cementation. The resin and ceramic blocks were cemented by a dual cure resin cement. All samples were stored in distilled water at 37 °C for 24 h. For the μ-TBS test, the samples were sliced into microbars. Half of the bars of each block was tested after 24 h and, the other bars were submitted to thermocycling (12,000×) and water storage (150 d). For the 24 h groups, the longer drying time increased (p < 0.05) the bond strength of SB (water/alcohol adhesive), while reduced (p < 0.05) for the PB group (acetone based adhesive). Results: For the aged groups, the bond strength for the different drying times had no significant difference, for the both adhesives. Conclusion: Longer drying times increased the bond strength values of SB. Smaller drying times increased the bond strength values of PB. The aging protocol influenced the bond strength of SB groups. Keywords: Microtensile; Adhesion; Feldspar ceramic; Drying time; Adhesive system.

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Can the silane heat treatment influence the bond durability between resin cements and a dental ceramic?

RGO - Revista Gaúcha de Odontologia ◽

10.1590/1981-86372020000012019-0002 ◽

2020 ◽

Vol 68 ◽

Author(s):

Ronaldo Luís Almeida de CARVALHO ◽

Jean Soares MIRANDA ◽

Rodrigo Furtado de CARVALHO ◽

Michelly Rocha DUARTE ◽

Estevão Tomomitsu KIMPARA ◽

...

Keyword(s):

Heat Treatment ◽

Bond Strength ◽

Resin Cement ◽

Microtensile Bond Strength ◽

Resin Cements ◽

Luting Agents ◽

All Ceramic ◽

Cad Cam ◽

Ceramic Blocks ◽

Bond Durability

ABSTRACT Objective Evaluate the influence of silane heat treatment in bond durability between two resin cements and CAD/CAM feldspathic ceramic. Methods 40 feldspathic ceramic blocks were obtained, and were duplicated in microhybrid composite. All ceramic blocks were etched with 10% hydrofluoric acid for 20 s and received application of silane agent. The blocks were randomizedinto eight groups (n=5) according to the surface treatments and luting agents: P- Panavia F; PAg- Panavia F + Aging; HP- Heat Treatment + Panavia F; HPAg- Heat Treatment + Panavia F + Aging; R- RelyX ARC; Rag- RelyX ARC + Aging; HR- Heat Treatment + RelyX ARC; HRAg- Heat Treatment + RelyX ARC + Aging. The heat treatment was performed in furnace at 100 °C for 2 min. All blocks were cemented and cut to obtain samples with adhesive area of 1 mm2. Aging was performed with 10000 thermal cycles. The samples were subjected to microtensile bond strength test. Results The three-way ANOVA test revealed a significant interaction between cement versus heat treatment (p=0.001) and heat treatment versus thermal cycling (p=0.001) indicating that there was a change in bond strength due to surface treatment and aging. Conclusion Therefore, the heat treatment of the silane at 100 ºC for 2 minutes obtained higher values of bond strength between the resin cement and a feldspathic ceramicafter aging.

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In vitro testing of shear bond strength of orthodontic brackets bonded to different novel CAD/CAM ceramics

Journal of Dental Research Dental Clinics Dental Prospects ◽

10.34172/joddd.2020.042 ◽

2020 ◽

Vol 14 (4) ◽

pp. 239-243

Author(s):

Eglal Ahmed Ghozy ◽

Marwa Sameh Shamaa ◽

Ahmed A. El-Bialy

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Ceramic Materials ◽

Bond Failure ◽

Ceramic Substrates ◽

Adhesive Remnant Index ◽

Cad Cam ◽

Ceramic Blocks ◽

Ceramic Bracket

Background. The present study aimed to evaluate the bond strength of metal bracket (MB) and ceramic bracket (CB) bonded to different CAD/CAM ceramic substrates etched with hydrofluoric acid (HFA) vs. phosphoric acid (PA). Methods. A total of 120 CAD/CAM ceramic blocks in 12 groups were fabricated from three different CAD/CAM ceramic materials: VITABLOCS Mark II, VITAENAMIC, and IPS e.max CAD. Each ceramic material group was divided into two etching groups: one treated with 9.5% HFA and the other treated with 37%. Sixty metal and CBs of the upper right central incisor were bonded to the HFA-treated blocks. Another 60 metal and CBs were bonded to the PA treated blocks. All the bonded specimens were thermocycled before shear bond strength (SBS) testing. Then the bond failure mode was recorded Results. There were no significant differences in SBS values between the three CAD/CAM ceramic materials. The HFA-treated specimens exhibited significantly higher SBS values than the PA-treated specimens. Also, the SBS values of CBs were significantly higher than the metal brackets (MBs). The adhesive remnant index (ARI) score was 4 for most of the groups, indicating that almost no adhesive remained on the porcelain surface. Conclusion. The CAD/CAM ceramic type did not influence SBS; however, HFA exhibited significantly higher SBS compared to PA.

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Effect of post-etching cleaning methods on surface micromorphology and shear bond strength of composite resin cement to feldspathic ceramic blocks

Egyptian Dental Journal ◽

10.21608/edj.2019.72723 ◽

2019 ◽

Vol 65 (1) ◽

pp. 475-482

Author(s):

Ahmed Ziada ◽

Dobbo Csaba

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Resin Cement ◽

Surface Micromorphology ◽

Ceramic Blocks ◽

Cleaning Methods

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Evaluation of shear bond strength of zirconia-based monolithic CAD-CAM materials to resin cement after different surface treatments

Nigerian Journal of Clinical Practice ◽

10.4103/njcp.njcp_157_19 ◽

2019 ◽

Vol 22 (11) ◽

pp. 1475 ◽

Cited By ~ 1

Author(s):

B Altan ◽

S Cinar ◽

B Tuncelli

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Surface Treatments ◽

Resin Cement ◽

Cad Cam

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Influence of Alumina Air-Abrasion on Flexural and Shear Bond Strengths of CAD/CAM Composite

Crystals ◽

10.3390/cryst10100927 ◽

2020 ◽

Vol 10 (10) ◽

pp. 927

Author(s):

Pirat Karntiang ◽

Hiroshi Ikeda ◽

Yuki Nagamatsu ◽

Hiroshi Shimizu

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Resin Cement ◽

Bending Test ◽

Air Abrasion ◽

Iso Standard ◽

Three Point Bending ◽

Significant Difference ◽

Cad Cam ◽

Bond Strengths

The purpose of this study was to clarify the influence of alumina air-abrasion on flexural and bond strengths of CAD/CAM composites. The flexural strength (FS) of two brands of commercial CAD/CAM composites was investigated by the three-point bending test using two specimen designs: the single-bar according to the ISO standard and the bonded-double-bar fabricated by bonding two bars with a resin cement. The bond strength between the composites and the resin cement was measured by a conventional shear bond strength (SBS) test. The FS of single-bar specimens was significantly decreased by the air-abrasion. For the FS of the bonded-double-bar specimen, on the other hand, there was no significant difference between the specimens with/without air-abrasion. The SBS for the composites was significantly increased by air-abrasion. The results suggest that alumina air-abrasion improves the SBS of the composites while weakening its FS. Contrarily, the FS of the air-abraded composite did not decrease when the composites were bonded with the resin cement.

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