Background: Achieving a stable bond with zirconia requires mechanical and chemical bonding methods. Information regarding the optimal treatment method for zirconia with varying yttrium content is scarce. This study evaluated the effect of different surface treatments on the shear bond strength of zirconia with various yttria contents.
Materials And Methods: A total of 168 disc-shaped zirconia specimens were classified into 12 groups based on the surface treatment method, including airborne-particle abrasion (APA), selective infiltration etching (SIE), hot etching (HE), and control group with no treatment; and yttria contents including Zolid Zi (4.5-5.6 wt% yttrium), Zolid HT White (6.7-7.2 wt% yttrium), and Ceramill Zolid FX (9.15-9.55 wt% yttrium). The surface roughness (Ra and Rz) of the specimens and the shear bond strength was measured (α = 0.05).
Results: The results indicated that the mean bond strength of all specimens was higher after different surface treatments compared to the control group, of which the APA method resulted in higher bonding strength in all kinds of zirconia than other methods (P < 0.05). In all types of zirconia, a significant difference was observed in surface roughness (Ra and Rz) resulting from various surface treatment methods (P < 0.001). Interaction of surface treatment methods and zirconia type significantly affected shear bond strength and surface roughness (P < 0.05).
Conclusion: APA significantly enhanced shear bond strength and surface roughness across all zirconia types and yttria contents. The SIE and HE methods also showed promising results. Zolid Zi showed superior bond strength, whereas Zolid FX demonstrated reduced bond strength.
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http://dx.doi.org/10.1186/s12903-024-05348-6 | DOI Listing |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662589 | PMC |
J Prosthet Dent
December 2024
Assistant Professor, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics,School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China. Electronic address:
Statement Of Problem: Polyetheretherketone (PEEK) has been used in clinical dentistry because of its excellent physical and biological properties. However, achieving an effective and durable bond with enamel is challenging because of its chemical inertness and low surface energy, and data on the effects of different surface treatments on the durability of PEEK-enamel bonds are scarce.
Purpose: The purpose of this in vitro study was to investigate airborne-particle abrasion, sulfuric acid etching, and the combined use of these treatments on the bonding durability of PEEK-enamel bonds and to gain a deeper understanding of their bonding mechanism.
BMC Oral Health
December 2024
Dental Sciences Research Center, Department of Prosthodontics, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
Int J Biol Macromol
December 2024
Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China. Electronic address:
Humidity and temperature sensors are considered as hotspots for the next generation of wearable multifunctional electronics. However, it is still a notable challenge to realize multifunctional sensors with high-performance humidity response, excellent mechanical properties, and accurate temperature monitoring capability. In this work, a hydrogen-bond cross-linked hybrid network was constructed between carboxystyrene-butadiene rubber (XSBR) and hydrophilic carboxylated cellulose nanofibers (CNF) noncovalently modified silver nanowires (AgNWs).
View Article and Find Full Text PDFInt J Periodontics Restorative Dent
December 2024
Purpose: This study is designed to explore the effect of Er,Cr:YSGG laser tooth etching versus that of conventional tooth surface treatment on the shear bond strength of ceramic laminate veneers.
Methods: Seventy-six maxillary premolars were assigned to two groups (n = 38) according to the type of enamel surface treatment approach. Group 1: samples treated with the conventional acid-etch protocol.
Biopolymers
January 2025
Post Graduate & Research Department of Chemistry, Mahatma Gandhi College, Thiruvananthapuram, India.
This study presents a feasible, one-pot synthesis approach for the preparation of a composite biopolymer material derived from tamarind seed xyloglucan (XG) by utilizing isocyanate chemistry. Through a facile reaction process, urethane bonds are formed in XG, resulting in the formation of a crosslinked network. FTIR spectra confirm the successful urethane link formation in XG via the OH-NCO reaction, and CHN analysis provides insights into the elemental composition.
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