Interfacial properties between a filling material and various wetting layers in TSV

Recently, the GaSb/InAs superlattice system has received renewed attention. The interest stems from a model demonstrating that short period Ga1-xInxSb/InAs superlattices will have both a band gap less than 100 meV and high optical absorption coefficients, principal requirements for infrared detector applications. Because this superlattice system contains two species of cations and anions, it is possible to prepare either InSb-like or GaAs-like interfaces. As such, the system presents a unique opportunity to examine interfacial properties.We used molecular beam epitaxy (MBE) to prepare an extensive set of GaSb/InAs superlattices grown on an GaSb buffer, which, in turn had been grown on a (100) GaAs substrate. Through appropriate shutter sequences, the interfaces were directed to assume either an InSb-like or GaAs-like character. These superlattices were then studied with a variety of ex-situ probes such as x-ray diffraction and Raman spectroscopy. These probes confirmed that, indeed, predominantly InSb-like and GaAs-like interfaces had been achieved.

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Effects of capillary waves on the thickness of wetting layers

Journal de Physique ◽

10.1051/jphys:01988004904067500 ◽

1988 ◽

Vol 49 (4) ◽

pp. 675-680 ◽

Cited By ~ 4

Author(s):

S. Chatterjee ◽

E.S.R. Gopal

Keyword(s):

Capillary Waves ◽

Wetting Layers

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A method for determining the natural moisture content of dentin in a clinical setting

Medical alphabet ◽

10.33667/2078-5631-2020-12-36-39 ◽

2020 ◽

Vol 1 (12) ◽

pp. 36-39

Author(s):

L. V. Iyashvili ◽

Yu. A. Vinnichenko ◽

A. V. Vinnichenko

Keyword(s):

Composite Material ◽

Moisture Content ◽

Computer Program ◽

Clinical Setting ◽

Quantitative Assessment ◽

Critical Mass ◽

Filling Material ◽

Adhesive Interaction ◽

Natural Moisture Content ◽

Hard Tissues

The purpose of the study is a quantitative assessment of the yield of dentinal fluid on the surface of the treated dentin of the tooth when restoring its structure with a composite filling material. To achieve this goal, digital images of the coronal parts of the teeth having formed carious cavities were used; virtual models of hard tissues of teeth recreated using specialized computer programs; A computer program that provides the ability to accurately determine the area of the treated dentin tooth. The results made it possible to draw the following conclusions: with an increase in the depth of the carious cavity, the amount of dentin fluid that can stand out on its surface (1–2 mm from the tooth cavity) sharply increases; with an increase in the area of the formed carious cavity (more than 30 mm2), the risk of release of a critical mass of dentinal fluid (more than 0.4 mg), which can adversely affect the strength of the adhesive interaction between the composite material and the hard tissues of the tooth, increases significantly; the same dynamics is observed with increasing time, at which there is the possibility of free exit of dentinal fluid to the surface of the cavity prepared for filling (more than 45 seconds).

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Microbiological purity of syringes containing composites in the context of cross-infection prevention in dental practices

Current Issues in Pharmacy and Medical Sciences ◽

10.2478/cipms-2020-0019 ◽

2020 ◽

Vol 33 (2) ◽

pp. 102-105

Author(s):

Joanna Bialowska ◽

Witold Bojar ◽

Tomasz Zareba ◽

Stefan Tyski ◽

Barbara Tymczyna-Borowicz

Keyword(s):

Infection Prevention ◽

Dental Materials ◽

Cross Infection ◽

Aerobic Bacteria ◽

Filling Material ◽

Bodily Fluids ◽

Dental Office ◽

Dental Practices ◽

Dental Offices ◽

Aerobic And Anaerobic

AbstractCross-infection involves the transmission of microorganisms through secretions, bodily fluids and excreta, as well as undisinfected surfaces and medical equipment. In the dental office, diseases are transmitted via various routes, e.g. from patient to dentist or other member of dental team, from doctor or dental team member to patient, from patient to another patient, from dental office to community and from community to patient. The study was conducted to evaluate the effectiveness of infection control in dental practices based on the qualitative and quantitative assessment of microbiological contaminants detected on the surface of filling material packaging used in dental offices. The material for research were 9 packages containing dental materials during their use in 3 dental settings. The packages were placed in sterile flasks and rinsed to wash microorganisms from the surfaces. The washes were filtered through membrane filters and cultured under proper aerobic and anaerobic conditions, and at elevated CO2 concentration. Microbial growth on TIO and TSB media was observed. The contamination of most samples remained low as indicated by the growth from one to a maximum of five colonies on TSA. The contamination remained at the level of 10-50 CFU/package, i.e. <100 CFU/single package. The tests evaluating the contamination of dental package surfaces with aerobic bacteria confirmed high hygiene standards observed in dental offices from which the packages were brought.

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