Effectiveness of protecting a zirconia bonding surface against contaminations using a newly developed protective lacquer

Klosa, Karsten; Warnecke, Henning Christian; Kern, Matthias

doi:10.1016/j.dental.2014.04.009

Cited by 12 publications

(19 citation statements)

References 13 publications

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“…Even so, the SBS test was chosen for its easy use, and it is important to mention that shear forces outweigh tensile forces on ceramic veneers. Studying this parameter would then be more interesting for this type of restoration where the absence of mechanical retention makes bonding an essential element for its longevity [ 40 ]. Moreover, when compared to a microtensile bond strength test, it helps avoiding pre-testing failures since it does not need to be cut before testing, which would be problematic with a brittle material, such as ceramic [ 6 , 17 ].…”

Section: Discussionmentioning

confidence: 99%

Adhesion of Resin to Lithium Disilicate with Different Surface Treatments before and after Salivary Contamination—An In-Vitro Study

et al. 2022

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The salivary contamination occurring at the try-in procedures of lithium disilicate (LDS) can jeopardize their bond strength. Various laboratory reports have concluded that applying 37% phosphoric acid (H3PO4) could be considered as a predictable way of removing salivary contaminants. An experimental method that consists of sealing the intaglio of the ceramic restorations with a layer of cured adhesive could allow consequent time saving for dental practitioners. It is, besides, necessary to establish an optimal decontamination protocol. Hence, this study aimed to determine the most efficient surface treatment, before and after salivary contamination, by comparing the adhesion between resin and LDS. In order to do so, five groups of ten specimens (n = 10) each underwent the different types of surface treatments before bonding, followed by 2500 cycles in the thermocycler. A shear bond strength (SBS) test was then conducted on a universal testing machine (YLE GmbH Waldstraße Bad König, Germany), followed by a fracture-type analysis on an optical microscope (Olympus BX53, Shinjuku, Tokyo, Japan). Statistical analysis was set with a level of significance of α = 0.05. The surface treatment significantly affected the SBS results. The decontamination with HF (12.59 ± 2.71 MPa) and H3PO4 (13.11 ± 1.03 MPa) obtained the highest values, silanizing only before contamination obtained intermediate values (11.74 ± 3.49 MPa), and silanizing both before and after the salivary contamination (10.41 ± 2.75 MPa) along with applying a bonding agent before contamination (9.65 ± 1.99 MPa) resulted in the lowest values. In conclusion, H3PO4 proved to be efficient, thus, allowing the practitioner to avoid the clinical use of HF; it can, therefore, be considered as a valid alternative. Presilanization and resilanization of specimens, along with applying a bonding agent before contamination, did not yield satisfying results.

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Section: Discussionmentioning

confidence: 99%

Adhesion of Resin to Lithium Disilicate with Different Surface Treatments before and after Salivary Contamination—An In-Vitro Study

et al. 2022

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“…The increased number of cycles above 5.000 that was up to 10.000 or 20.000 do not significantly affect the result [15]. The frequency of cycling in vivo remains to be determined at present and requires formal estimation [7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,…”

Section: Discussionmentioning

confidence: 99%

“…If contaminants are present, sites that could be occupied by the phosphate monomers become inactive [8]. Some treatments such as cleansing with H 2 O, H 2 O 2 , ethanol, or acetone, the application of orthophosphoric acid, ethyl cellulose-based paints, ultrasonic cleaning, or plasma treatment are all ineffective in removing contaminants [13,43,51,53,62]. Sandblasting with Al 2 O 3 powder is the most effective method for removing contaminants, even though it can weaken the structure of zirconia if carried out several times on the material.…”

Section: Discussionmentioning

confidence: 99%

Adhesion to Zirconia: A Systematic Review of Current Conditioning Methods and Bonding Materials

et al. 2019

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Background. Reliable bonding between resin composite cements and high strength ceramics is difficult to achieve because of their chemical inertness and lack of silica content that makes etching impossible. The purpose of this review is to classify and analyze the existing methods and materials suggested to improve the adhesion of zirconia to dental substrate by using composite resins, in order to explore current trends in surface conditioning methods with predictable results. Methods. The current literature, examining the bond strength of zirconia ceramics, and including in vitro studies, clinical studies, and a systematic review, was analyzed. The research in the literature was carried out using PubMed and Cochrane Library databases, only papers in English, published online from 2013 to 2018. The following keywords and their combinations were used: Zirconia, 3Y-TZP, Adhesion, Adhesive cementation, Bonding, Resin, Composite resin, Composite material, Dentin, Enamel. Results. Research, in PubMed and Cochrane Library databases, provided 390 titles with abstracts. From these, a total of 93 publications were chosen for analysis. After a full text evaluation, seven articles were discarded. Therefore, the final sample was 86, including in vitro, clinical studies, and one systematic review. Various adhesive techniques with different testing methods were examined. Conclusions. Airborne-particle abrasion and tribo-chemical silica coating are the pre-treatment methods with more evidence in the literature. Increased adhesion could be expected after physico-chemical conditioning of zirconia. Surface contamination has a negative effect on adhesion. There is no evidence to support a universal adhesion protocol.

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“…During preparation and try-in procedures of dental restorations, bonding surfaces, i.e., tooth structures, restoration materials and core build-up materials might be contaminated by saliva [ 12 , 13 ], blood [ 14 ], dentin liquor and/or a disclosing silicone [ 15 ]. Therefore, the surfaces need to be cleaned and conditioned sufficiently prior to adhesive cementation in order to obtain durable long-term bond strength [ 16 , 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Cleaning and Conditioning of Contaminated Core Build-Up Material before Adhesive Bonding

et al. 2020

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The objective of this study was to evaluate the effects of different cleaning and conditioning procedures after contamination on the tensile bond strength (TBS) of a luting resin to a core build-up composite resin. Specimens (n = 384) made of a core build-up material were stored for 3 weeks in 37 °C water. Half of the specimens were contaminated with saliva and a disclosing silicone and then cleaned either using phosphoric acid, a pumice suspension, air-abrasion with alumina or polishing powder. Surface conditioning was performed by either using a dentin adhesive, a silane containing primer or a composite resin primer, which resulted in 24 unique combinations of 16 specimens per group. Before measuring TBS, half of the specimens of each group were stored in 37 °C water for 3d or were artificially aged for 150 days. Results show that cleaning with pumice or air-abrasion are superior methods compared to using a polishing powder or phosphoric acid. Silane is an inferior conditioning agent compared to composite or dentin primers. Ideally, after contamination, bonding surfaces should be cleaned with a pumice suspension and conditioned with a dentin adhesive. Those surfaces could also be cleaned and conditioned with air-abrasion with alumina particles and a composite resin primer.

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Effectiveness of protecting a zirconia bonding surface against contaminations using a newly developed protective lacquer

Cited by 12 publications

References 13 publications

Adhesion of Resin to Lithium Disilicate with Different Surface Treatments before and after Salivary Contamination—An In-Vitro Study

Adhesion of Resin to Lithium Disilicate with Different Surface Treatments before and after Salivary Contamination—An In-Vitro Study

Adhesion to Zirconia: A Systematic Review of Current Conditioning Methods and Bonding Materials

Cleaning and Conditioning of Contaminated Core Build-Up Material before Adhesive Bonding

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