Genotoxic effects of X-rays on keratinized mucosa cells during panoramic dental radiography

2008 ◽  
Vol 37 (7) ◽  
pp. 398-403 ◽  
Author(s):  
E M M Cerqueira ◽  
J R C Meireles ◽  
M A Lopes ◽  
V C Junqueira ◽  
I S Gomes-Filho ◽  
...  
Keyword(s):  
Dental Radiography ◽  
X Rays ◽  
Genotoxic Effects ◽  
Keratinized Mucosa

scholarly journals Genotoxic effects of X-rays in buccal mucosal cells in children subjected to dental radiographs

BDJ Open ◽  
2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Naveena Preethi ◽  
Nagarathna Chikkanarasaiah ◽  
Shakuntala S Bethur
Keyword(s):  
X Rays ◽  
Genotoxic Effects ◽  
Mucosal Cells ◽  
Dental Radiographs

Are gingival cells more sensitive to genotoxic effects caused by dental radiography?

Oral Oncology ◽  
2018 ◽  
Vol 87 ◽  
pp. 201-202
Author(s):  
Mahesh Shivaji Chavan ◽  
Priti Mahesh Chavan ◽  
Digamber Sable ◽  
Suhas Pande ◽  
Harshada Inamdar ◽  
...  
Keyword(s):  
Dental Radiography ◽  
Genotoxic Effects ◽  
Gingival Cells

scholarly journals Overview on Updates on Digital Dental Radiography

2021 ◽  
pp. 23-28
Author(s):  
Ashwag Siddik Noorsaeed ◽  
Ali Hussain Almohammedsaleh ◽  
Mustafa Mohammed Alhayek ◽  
Abdullah Abdulhameed Alnajar ◽  
Osama Nasser Kariri ◽  
...  
Keyword(s):  
Digital Radiography ◽  
New Technologies ◽  
The United States ◽  
Forensic Radiology ◽  
Dental Radiography ◽  
X Rays ◽  
The Us ◽  
Us Government ◽  
New Strategy ◽  
Digital Dental Radiography

Wilhelm Roentgen first discovered X-rays in 1895. Since its introduction in the mid-1980s, digital radiography has surpassed traditional screen-film radiography. Since 2000, more than 75 percent of medical clinics in the United States have migrated to digital radiography (DR). In fact, the US government has ordered that all medical records be converted to digital. Indirect, direct, or semi-direct digital radiography pictures are types of digital radiography currently available. Forensic radiology is a branch of medical imaging technology that helps clinicians. Radiology technology has evolved and grown tremendously in recent years. When comparing aggregated antemortem and postmortem information, radiographs are crucial. Adopting new technologies into a dental business demands a certain amount of bravery. After all, why alter things if your practise is running smoothly?  To grasp the new equipment and procedures, the dentist and his or her staff will need further training.  It's not always apparent how the new strategy will influence the practice's present logistics. These factors may cause the practitioner to be hesitant to alter present techniques. In this article we’ll reviewing digital dental radiography, and what are the advantages of going digital. And also what are the challenges that face us.

Osteoporosis: Detection Using Dental Radiography

2020 ◽  
Author(s):  
Sakshi Sharma
Keyword(s):  
Bone Mineral Density ◽  
Diagnostic Method ◽  
Senior Citizens ◽  
Dental Radiography ◽  
X Rays ◽  
The Novel ◽  
Two Dimensional ◽  
Mineral Density ◽  
Visual Examination ◽  
Two Dimensional Image

Osteoporosis has been a cause for major concern for all the nations where the population of senior citizens has seen a spurt on account of better healthcare. However, where a timely diagnosis cannot be made, it causes a lot of suffering to the patient. The study aims at exploring the potential of dental radiography as a tool for diagnosis where a dentist could identify groups at high risk of suffering from this ailment much before they suffer from any fracture and to prevent it from happening by mitigating the various factors that may cause it. Going beyond the conventional techniques of diagnosis, this study evaluates the efficacy of the novel methodology studied under the Osteodent Project for determining risk or vulnerability to osteoporosis through radio-morphometric and visual indices or photodensitometric analysis of trabecular patterns. Dental Radiography is not the sole diagnostic method for this ailment but an adjunct to screening techniques that can be used by a dentist for undiagnosed cases in patients who are unaware of being at risk. Since dental X-rays capture a two-dimensional image, visual examination becomes imperative to assess dimensions of bone and make requisite calculations for bone mineral density to predict the risk of osteoporosis.

White-Light Coronal Structures: Streamers and CMEs

1994 ◽  
Vol 144 ◽  
pp. 82
Author(s):  
E. Hildner
Keyword(s):  
Emission Line ◽  
Electron Density ◽  
White Light ◽  
Coronal Mass Ejections ◽  
X Rays ◽  
Solar Cycles ◽  
Temperature Function ◽  
X Ray ◽  
Eclipse Observations ◽  
Coronal Structures

AbstractOver the last twenty years, orbiting coronagraphs have vastly increased the amount of observational material for the whitelight corona. Spanning almost two solar cycles, and augmented by ground-based K-coronameter, emission-line, and eclipse observations, these data allow us to assess,inter alia: the typical and atypical behavior of the corona; how the corona evolves on time scales from minutes to a decade; and (in some respects) the relation between photospheric, coronal, and interplanetary features. This talk will review recent results on these three topics. A remark or two will attempt to relate the whitelight corona between 1.5 and 6 R⊙to the corona seen at lower altitudes in soft X-rays (e.g., with Yohkoh). The whitelight emission depends only on integrated electron density independent of temperature, whereas the soft X-ray emission depends upon the integral of electron density squared times a temperature function. The properties of coronal mass ejections (CMEs) will be reviewed briefly and their relationships to other solar and interplanetary phenomena will be noted.

Emergence of Twisted Magnetic Flux Related Sigmoidal Brightening

2000 ◽  
Vol 179 ◽  
pp. 263-264
Author(s):  
K. Sundara Raman ◽  
K. B. Ramesh ◽  
R. Selvendran ◽  
P. S. M. Aleem ◽  
K. M. Hiremath
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Flux ◽  
Ultra Violet ◽  
Active Regions ◽  
Morphological Properties ◽  
Energy Storage And Conversion ◽  
The Sun ◽  
X Rays ◽  
The Magnetic Field

Extended AbstractWe have examined the morphological properties of a sigmoid associated with an SXR (soft X-ray) flare. The sigmoid is cospatial with the EUV (extreme ultra violet) images and in the optical part lies along an S-shaped Hαfilament. The photoheliogram shows flux emergence within an existingδtype sunspot which has caused the rotation of the umbrae giving rise to the sigmoidal brightening.It is now widely accepted that flares derive their energy from the magnetic fields of the active regions and coronal levels are considered to be the flare sites. But still a satisfactory understanding of the flare processes has not been achieved because of the difficulties encountered to predict and estimate the probability of flare eruptions. The convection flows and vortices below the photosphere transport and concentrate magnetic field, which subsequently appear as active regions in the photosphere (Rust & Kumar 1994 and the references therein). Successive emergence of magnetic flux, twist the field, creating flare productive magnetic shear and has been studied by many authors (Sundara Ramanet al.1998 and the references therein). Hence, it is considered that the flare is powered by the energy stored in the twisted magnetic flux tubes (Kurokawa 1996 and the references therein). Rust & Kumar (1996) named the S-shaped bright coronal loops that appear in soft X-rays as ‘Sigmoids’ and concluded that this S-shaped distortion is due to the twist developed in the magnetic field lines. These transient sigmoidal features tell a great deal about unstable coronal magnetic fields, as these regions are more likely to be eruptive (Canfieldet al.1999). As the magnetic fields of the active regions are deep rooted in the Sun, the twist developed in the subphotospheric flux tube penetrates the photosphere and extends in to the corona. Thus, it is essentially favourable for the subphotospheric twist to unwind the twist and transmit it through the photosphere to the corona. Therefore, it becomes essential to make complete observational descriptions of a flare from the magnetic field changes that are taking place in different atmospheric levels of the Sun, to pin down the energy storage and conversion process that trigger the flare phenomena.

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