scholarly journals Influence of dental bonding surface and bonding methods on marginal adaptation of occlusal veneer after thermal aging

2021 ◽  
Vol 67 (4) ◽  
pp. 3355-3363
Author(s):  
Lamia Dawood ◽  
Walid Al-Zordk
Keyword(s):  
Thermal Aging ◽  
Marginal Adaptation ◽  
Dental Bonding ◽  
Bonding Surface

A study on formation of alloyed layer of low melting temperature on bonding surface of IN738LC with boron pack cementation.

1987 ◽  
Vol 5 (3) ◽  
pp. 370-373 ◽  
Author(s):  
Mitsuo Kato ◽  
Takao Funamoto ◽  
Hiroshi Wachi ◽  
Takeshi Matsuzaka ◽  
Tomohiko Shida ◽  
...  
Keyword(s):  
Melting Temperature ◽  
Pack Cementation ◽  
Alloyed Layer ◽  
Bonding Surface

Computation of durability of particle boards based on biobinders during thermal aging

2021 ◽  
Author(s):  
Davud Kadimaliev ◽  
Victor Revin ◽  
Vladimir Vodyakov ◽  
Nikolay Novokuptsev ◽  
Nikolay Pestov ◽  
...  
Keyword(s):  
Thermal Aging

Mo-Fe/NbFeSb Thermoelectric Junctions: Anti-Thermal Aging Interface and Low Contact Resistivity

2021 ◽  
Vol 13 (6) ◽  
pp. 7317-7323
Author(s):  
Zhenyi Wang ◽  
Chenguang Fu ◽  
Kaiyang Xia ◽  
Feng Liu ◽  
Xinbing Zhao ◽  
...  
Keyword(s):  
Thermal Aging ◽  
Contact Resistivity

Electrical insulation properties of silicone rubber under accelerated corona and thermal aging

2020 ◽  
Author(s):  
El Hadi Belhiteche ◽  
Sébastien Rondot ◽  
Mustapha Moudoud ◽  
Philippe Dony ◽  
Omar Jbara
Keyword(s):  
Silicone Rubber ◽  
Thermal Aging ◽  
Electrical Insulation ◽  
Electrical Insulation Properties

scholarly journals Marginal Adaptation and Micropermeability of Class II Cavities Restored with Three Different Types of Resin Composites—A Comparative Ten-Month In Vitro Study

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1660
Author(s):  
Sevda Mihailova Yantcheva
Keyword(s):  
Methylene Blue ◽  
In Vitro Study ◽  
Sem Analysis ◽  
Marginal Adaptation ◽  
Resin Composites ◽  
Polymerization Shrinkage ◽  
Gingival Margin ◽  
Different Types ◽  
Ageing Period

The development of composite materials is subject to the desire to overcome polymerization shrinkage and generated polymerization stress. An indicator characterizing the properties of restorative materials, with specific importance for preventing secondary caries, is the integrity and durability of marginal sealing. It is a reflection of the effects of polymerization shrinkage and generated stress. The present study aimed to evaluate and correlate marginal integrity and micropermeability in second-class cavities restored with three different types of composites, representing different strategies to reduce polymerization shrinkage and stress: nanocomposite, silorane, and bulk-fill composite after a ten-month ageing period. Thirty standardized class ΙΙ cavities were prepared on extracted human molars. Gingival margins were 1 mm apical to the cementoenamel junction. Cavities were randomly divided into three groups, based on the composites used: FiltekUltimate-nanocomposite; Filtek Silorane LS-silorane; SonicFill-bulk-fill composite. All specimens were subjected to thermal cycles after that, dipped in saline for 10-mounds. After ageing, samples were immersed in a 2% methylene blue. Thus prepared, they were covered directly with gold and analyzed on SEM for assessment of marginal seal. When the SEM analysis was completed, the teeth were included into epoxy blocks and cut longitudinally on three slices for each cavity. An assessment of microleakage on stereomicroscope followed. Results were statistically analyzed. For marginal seal evaluation: F.Ultimate and F.Silorane differ statistically with more excellent results than SonicFill for marginal adaptation to the gingival margin, located entirely in the dentin. For microleakage evaluation: F.Ultimate and F.Silorane differ statistically with less microleakage than SonicFill. Based on the results obtained: a strong correlation is found between excellent results for marginal adaptation to the marginal gingival ridge and micropermeability at the direction to the axial wall. We observe a more significant influence of time at the gingival margin of the cavities. There is a significant increase in the presence of marginal fissures (p = 0.001). A significant impact of time (p < 0.000) and of the material (p < 0.000) was found in the analysis of the microleakage.

THz optical parameters of FR3 natural ester insulating oil after thermal aging

Optik ◽  
2021 ◽  
Vol 239 ◽  
pp. 166873
Author(s):  
Wang Liang ◽  
Qi Zhipeng ◽  
Li Ze ◽  
Guo Li
Keyword(s):  
Thermal Aging ◽  
Optical Parameters ◽  
Insulating Oil ◽  
Natural Ester
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