scholarly journals INTERPRETATION OF FRESHES IN CHURCHES IN CAPPADOCIA REGION ON CERAMIC SURFACES

2019 ◽  
Vol 7 (43) ◽  
pp. 881-888
Author(s):  
Ayla Bırıncı ◽  
T.Emre Feyzoglu
Author(s):  
H.-J. Ou

The understanding of the interactions between the small metallic particles and ceramic surfaces has been studied by many catalyst scientists. We had developed Scanning Reflection Electron Microscopy technique to study surface structure of MgO hulk cleaved surface and the interaction with the small particle of metals. Resolutions of 10Å has shown the periodic array of surface atomic steps on MgO. The SREM observation of the interaction between the metallic particles and the surface may provide a new perspective on such processes.


2021 ◽  
Vol 11 (6) ◽  
pp. 2512
Author(s):  
Anca Labunet ◽  
Andreea Kui ◽  
Sorina Sava

Orthodontists must sometimes bond attachments to ceramic crowns, by using one of the surface preparations available, such as sandblasting or acid etching with hydrofluoric acid. Research shows that different laser systems may also be used for this purpose. The aim of this review is to determine which laser type and modality of use is the most effective in increasing shear bond strength of brackets bonded to ceramic surfaces. Two independent researchers studied the current literature 1990–2018 and selected original articles focusing on in vitro research on laser use for ceramic surface preparation for bonding metallic or ceramic attachments. Twelve articles have met the criteria and have been thoroughly revised, focusing on 2 fractional, Nd:Yag, Er:Yag, femtosecond and Ti:Sapphire lasers. There is little difference shown by the current studies between ceramic types and information on orthodontic bonding to non-feldspathic ceramics is scarce. Femtosecond laser is a good alternative to classical surface preparation with hydrofluoric acid. Nd:Yag laser is more suitable for surface preparation of ceramics than different types of Er:Yag lasers. Difference in laser power may achieve different results, but the golden standard for lasers use has not been found. Laser usage does not obtain the same results as hydrofluoric acid and cannot, so far, eliminate its application.


Wear ◽  
2017 ◽  
Vol 390-391 ◽  
pp. 355-366 ◽  
Author(s):  
Agnese Piselli ◽  
Margherita Basso ◽  
Michele Simonato ◽  
Riccardo Furlanetto ◽  
Alberto Cigada ◽  
...  

2014 ◽  
Vol 38 (2) ◽  
pp. 116-119 ◽  
Author(s):  
Savas Sariozkan ◽  
Abdullah Inci ◽  
Alpaslan Yildirim ◽  
Onder Duzlu ◽  
Elmer W. Gray ◽  
...  

Archaeometry ◽  
1991 ◽  
Vol 33 (2) ◽  
pp. 231-238 ◽  
Author(s):  
A. G. TÜRKMENO?LU ◽  
E. H. GÖKTÜRK ◽  
E. N. CANER
Keyword(s):  

2008 ◽  
Vol 19 (8) ◽  
pp. 780-785 ◽  
Author(s):  
Emilena Maria Castor Xisto Lima ◽  
Hyun Koo ◽  
Anne M. Vacca Smith ◽  
Pedro Luiz Rosalen ◽  
Altair Antoninha Del Bel Cury

2017 ◽  
Vol 88 (2) ◽  
pp. 221-226 ◽  
Author(s):  
S. Kutalmış Buyuk ◽  
Ahmet Serkan Kucukekenci

ABSTRACT Objective: To investigate the shear bond strength (SBS) of orthodontic metal brackets applied to different types of ceramic surfaces treated with different etching procedures and bonding agents. Materials and Methods: Monolithic CAD/CAM ceramic specimens (N = 120; n = 40 each group) of feldspathic ceramic Vita Mark II, resin nanoceramic Lava Ultimate, and hybrid ceramic Vita Enamic were fabricated (14 × 12 × 3 mm). Ceramic specimens were separated into four subgroups (n = 10) according to type of surface treatment and bonding onto the ceramic surface. Within each group, four subgroups were prepared by phosphoric acid, hydrofluoric acid, Transbond XT primer, and Clearfill Ceramic primer. Mandibular central incisor metal brackets were bonded with light-cure composite. The SBS data were analyzed using three-way analysis of variance (ANOVA) and Tukey HSD tests. Results: The highest SBS was found in the Vita Enamic group, which is a hybrid ceramic, etched with hydrofluoric acid and applied Transbond XT Adhesive primer (7.28 ± 2.49 MPa). The lowest SBS was found in the Lava Ultimate group, which is a resin nano-ceramic etched with hydrofluoric acid and applied Clearfill ceramic primer (2.20 ± 1.21 MPa). Conclusions: CAD/CAM material types and bonding procedures affected bond strength (P < .05), but the etching procedure did not (P > .05). The use of Transbond XT as a primer bonding agent resulted in higher SBS.


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