scholarly journals The acute odontogenic infection in maritime medicine: clinical and radiological parallels

2021 ◽  
Vol 7 (2) ◽  
pp. 61-65
Author(s):  
A. A. Serikov ◽  
A. K. Iordanishvili
Keyword(s):  
Oral Cavity ◽  
Dental Treatment ◽  
Odontogenic Infection ◽  
X Ray ◽  
Potential Source ◽  
Qualitative Detection ◽  
Main Thing ◽  
Odontogenic Foci ◽  
Maritime Medicine ◽  
Maxillary Sinuses

Relevance. The main thing in the prevention of acute odontogenic infection in sailors during long voyages is the full implementation of the pre-voyage sanitation of the oral cavity, which provides for the elimination of chronic foci of odontogenic infection.The aimof the study was to identify chronic foci of odontogenic infection in sailors after the completion of their prevoyage sanitation of the oral cavity and before going sailing.Material and methods. Dental and X-ray (orthopantomography) examination of 169 men aged 22 to 52 years after completion of dental treatment (oral cavity sanitation) before a long sea voyage was carried out, followed by analysis of clinical and radiological parallels to identify chronic odontogenic foci of infection, which can be a potential source of microorganisms for the development of acute odontogenic infection during swimming.Results and discussion.It was found that, despite the ongoing treatment and prophylactic work on the rehabilitation of the oral cavity with the sailors in the pre-voyage period, in 30.4-77.2% of cases they retain chronic foci of odontogenic infection during a long sea voyage, which can become the cause of the development of acute odontogenic infection. For the qualitative detection of chronic odontogenic foci of infection, it is necessary to supplement the dental examination of sailors in the pre-voyage period with an X-ray examination, which will allow timely identification and elimination of chronic odontogenic inflammation of the maxillary sinuses, as well as chronic periapical and periodontal foci of odontogenic infection.

Evaluation of the Degree of Dental Anxiety in a Lot of Patients Altered in Young Adults

2019 ◽  
Vol 70 (2) ◽  
pp. 689-692
Author(s):  
Gheorghe Raftu ◽  
Elena-Claudia Sin ◽  
Aureliana Caraiane ◽  
Steliana Gabriela Bustiuc ◽  
Raluca Briceag
Keyword(s):  
Young Adults ◽  
Oral Cavity ◽  
Dental Treatment ◽  
Economic Status ◽  
Dental Anxiety ◽  
Background Level ◽  
Anxiety Scale ◽  
Statistical Relationships ◽  
And Gender ◽  
Age Range

The study aims at identifying and highlighting dental anxiety in a group of young adults, analyzing patients� concerns about the main dental treatment procedures, and establishing statistical relationships between anxiety and gender, the background, level of education, socio-economic status and knowledge of habits of care and hygiene of oral cavity characteristic of the studied group. The study group consists of 150 female (50%) and male (50%) patients , aged between 20 and 40 years. The inclusion criteria in the batch were those related to the age range of 20 to 40 years.Two respondents (Corah�s Dental Anxiety Scale, Revised (DAS-R)) were given two questionnaires ( Corah�s Dental Anxiety Scale, DAS-R), and the second questionnaire contained 7 questions about the habits dental care). Most patients� concerns about the main procedures of dental treatment / other concerns are: dental extraction, material expenses, possibility of treatments and shame she felt oppressed health of the oral cavity. Regardless of the level of dental anxiety, the oral cavity hygiene habits are not properly performed by patients, with an increased tendency for them to be disregarded by patients with severe dental anxiety.

Clonal similarity of salivary and nasopharyngeal Fusobacterium nucleatum in infants with acute otitis media experience

2004 ◽  
Vol 53 (2) ◽  
pp. 161-165 ◽  
Author(s):  
Gunnsteinn Haraldsson ◽  
W. Peter Holbrook ◽  
Eija Könönen
Keyword(s):  
Oral Cavity ◽  
Otitis Media ◽  
Anaerobic Bacteria ◽  
Acute Otitis Media ◽  
Fusobacterium Nucleatum ◽  
Potential Source ◽  
History Of ◽  
Arbitrarily Primed Pcr ◽  
Inoculation Route ◽  
Media Experience

The environment of an infant's nasopharynx during acute otitis media (AOM) favours the growth of anaerobic bacteria, which can be recovered frequently during infection, but hardly at all if the infant is healthy. The aim of this investigation was to identify the potential source and inoculation route of anaerobes that were present in the nasopharynx. Eleven Fusobacterium nucleatum isolates that were collected through the nasal cavity from the nasopharynx of eight infants with a history of AOM, and 161 F. nucleatum isolates from the saliva of the same infants, were typed to the clonal level by using arbitrarily primed PCR (AP-PCR). In five of the eight infants examined, identical AP-PCR types were found among nasopharyngeal and salivary isolates. As anaerobes seem to be present only transiently in the nasopharynx and salivary contamination of the nasopharyngeal samples can be excluded, this observation indicates that the source of nasopharyngeal anaerobes is the oral cavity and that saliva is their transmission vehicle.

scholarly journals Gold Mine Tailings: A Potential Source of Silica Sand for Glass Making

Minerals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 448 ◽  
Author(s):  
Uchenna Okereafor ◽  
Mamookho Makhatha ◽  
Lukhanyo Mekuto ◽  
Vuyo Mavumengwana
Keyword(s):  
Mine Tailings ◽  
Potentially Toxic Elements ◽  
Silica Sand ◽  
Mine Wastes ◽  
Gold Mine ◽  
X Ray Diffraction ◽  
X Ray ◽  
Potential Source ◽  
Gold Mine Tailings ◽  
Cadmium Zinc

Mining of minerals such as gold, copper, and platinum has been one of several activities sustaining the economy of South Africa. However, the mining sector has contributed significantly to environmental contamination through the improper disposal of mine tailings which covers vast areas of land. Therefore, this study utilised a vitrification process to manufacture glass from gold mine tailings. X-ray fluorescence was used to determine the chemical composition of the tailings while X-ray diffraction was adopted for the mineralogy. The tailings were of granitic composition enriched in potentially toxic elements such as copper, cadmium, zinc, lead, arsenic, and chromium. A representative sample of gold mine wastes of sandy grain size was used in making the glass. Based on composition, the glass was formulated by adding an average 10.0 mass% of CaCO3 and 5.0 mass% of Na2CO3 to 35.0 mass% of SiO2, which resulted in the production of a green-coloured glass.

An X-ray Diffraction Method for the Determination of Temperatures in Coke Reactions

1984 ◽  
Vol 28 ◽  
pp. 383-388 ◽  
Author(s):  
Jack L. Johnson ◽  
Seymour Katz
Keyword(s):  
Diffraction Method ◽  
Temperature History ◽  
Maximum Temperature ◽  
Slag Formation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Potential Source ◽  
History Of ◽  
Extract Information

Information about the conditions and reactions in a foundry cupola is essential to understand the thermochemistry of a cupola and thus improve its efficiency. A potential source of such information is coke taken from inside an operating cupola. In the region of the cupola that extends from the melt zone to the taphole, coke is directly involved in important chemical processes such as combustion, gasification, slag formation, iron sulfurization, carbon pickup, and oxide reduction. Coke is also suspected of being involved in the transport of silicon to the liquid iron. Each of these processes produces characteristic physical and/or chemical changes in the coke, making it possible to extract information about the processes from an examination of coke pieces taken from within an operating cupola. A program to study such coke samples is in progress. To effectively interpret these data it is necessary to know the temperature history of the coke being examined, especially the maximum temperature attained by the coke piece in the cupola.

scholarly journals Cloning, Expression, Purification, and Preliminary Characterization of Single-Crystal X-Ray Diffraction of Glucosyltransferase B of Streptococcus mutans

2019 ◽  
Vol 14 (5) ◽  
pp. 1934578X1984933
Author(s):  
Joshua L. Mieher ◽  
Norbert Schormann ◽  
Manisha Patel ◽  
Hui Wu ◽  
Champion Deivanayagam
Keyword(s):  
Dental Caries ◽  
Oral Cavity ◽  
Single Crystal ◽  
Streptococcus Mutans ◽  
Tooth Enamel ◽  
Tooth Surface ◽  
X Ray Diffraction ◽  
Persistent Disease ◽  
X Ray

Dental caries characterized by acid damage of tooth enamel is a persistent disease that begins with the formation of biofilms on the tooth surface. The secreted glucosyltransferases enable Streptococcus mutans to synthesize extracellular glucan polymers using ingested starch within the oral cavity, which eventually results in the production of acid, a contributing factor to cariogenesis. In this paper, we report the cloning, expression, purification, crystallization, and preliminary X-ray diffraction characterization of glucosyltransferase B.

Qualitative detection of Mg content in a leaf ofHedera helix by using X-ray radiation from a laser plasma source

2008 ◽  
Vol 71 (6) ◽  
pp. 459-468 ◽  
Author(s):  
Lucia Reale ◽  
Antonia Lai ◽  
Maria Sighicelli ◽  
Anatoly Faenov ◽  
Tatiana Pikuz ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Plasma Source ◽  
X Ray ◽  
Qualitative Detection ◽  
Mg Content

The level of dental awareness in the patients with hemophilia

10.12737/4801 ◽  
2014 ◽  
Vol 8 (1) ◽  
pp. 1-5
Author(s):  
Габибуллаева ◽  
S. Gabibullaeva ◽  
Абдурахманов ◽  
A. Abdurakhmanov
Keyword(s):  
Oral Cavity ◽  
Dental Treatment ◽  
Epidemiological Studies ◽  
Modern Medicine ◽  
Dental Disease ◽  
Local Immunity ◽  
Vast Number ◽  
Hygienic Condition ◽  
Treatment And Prevention ◽  
Dental Diseases

The considerable prevalence of dental diseases in the patients with hemophilia is due to the absence of prevention and the proper care of the oral cavity, as well as regular medical examination. This category of patients reluctantly turns to the dentists for fear of bleeding, and the doctors for the same reason, avoid interventions in the mouth. Dental aspects of hemophilia are relevant problem of modern medicine due to the high intensity of organs and tissues of the oral cavity, a real risk of complications during dental procedures of therapeutic, surgical and orthopedic profiles. Epidemiological studies on lesions of the oral cavity in the patients with hereditary coagulative pathologies show a high prevalence of various dental disease, poor hygienic condition of the mouth, which entails a considerable need for dental treatment and prevention activities. To ensure timely quality dental care, control over the hygienic condition of oral cavity it is necessary to conduct regular examination of the state of the oral cavity in the patients with hemophilia. Dentists refuse to the patients in need of assistance because of fear of bleeding and the risk of infection with hepatitis and HIV infection. The high level of dental diseases at hemophilia may be due to the poor hygienic condition of the mouth, change of physicochemical properties of saliva and local immunity. Most patients with hemophilia brush their teeth not regularly and unsatisfactory. A vast number of microorganisms contained in this RAID, low local immunity can cause various diseases of the oral cavity. In this group of patients it is more important to prevent the development of dental disease than to treat them, for fear of complications.

Comparison of diffraction methods for measurement of surface damage in superalloys

2006 ◽  
Vol 21 (7) ◽  
pp. 1775-1781 ◽  
Author(s):  
L.N. Brewer ◽  
M.A. Othon ◽  
Y. Gao ◽  
B.T. Hazel ◽  
W.H. Buttrill ◽  
...  
Keyword(s):  
Surface Damage ◽  
High Energy ◽  
Machining Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Damage Layer ◽  
Potential Source ◽  
Machining Operations ◽  
Electron Back Scattered Diffraction ◽  
Super Alloy

Surface damage from machining operations is a potential source of failure in metallic components. The ability to quantitatively characterize the depth and extent of the damage layer is critical to controlling the machining process. Electron back scattered diffraction and synchrotron high energy x-ray diffraction were applied to the measurement of machining surface damage in a Ni-based super alloy. Both techniques clearly showed a plastic deformation profile below the surface as a function of the machining conditions used. Using the average intragrain misorientation parameter, the electron back scattered diffraction was able to quantify the amount of surface damage from one surface treatment to another. In addition, the x-ray diffraction measurements were able to simultaneously measure the elastic strain as a function of depth from the surface.

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