THERMOGRAPHY – A REVIEW

2021 ◽  
pp. 98-101
Author(s):  
G. Mounika ◽  
K. Sridevi ◽  
B. Krishnaveni ◽  
N. Prasanth Kumar ◽  
N. Harika
Keyword(s):  
Temperature Distribution ◽  
Orofacial Pain ◽  
Inferior Alveolar Nerve ◽  
The Body ◽  
Herpes Labialis ◽  
Noninvasive Method ◽  
Maxillofacial Region ◽  
Basic Principles ◽  
Chronic Orofacial Pain ◽  
Thermal Patterns

Thermography is a technique of measurement of skin temperature distribution on the body over a given period of time. It is a noncontact, noninvasive method that utilizes the heat from an object to detect, display, and record thermal patterns and temperature across the surface of the object. Over the years, various devices have been used to measure the amount of heat dissipated by the body and most recently thermography has been emerged to detect the oral and maxillofacial pathologies. It is used to detect malignancies of the maxillofacial region such as vitality of teeth, TMJ disorders, chronic orofacial pain, assessing inferior alveolar nerve decit, and detection of herpes labialis. The present article highlights the history, basic principles, types and applications of thermography and its benecial role in detecting the maxillofacial pathologies in dentistry.

PSYCHOLOGICAL FACTORS ASSOCIATED WITH CHRONIC OROFACIAL PAIN.

2020 ◽  
Vol 7 (8) ◽  
pp. 24-29
Keyword(s):  
Clinical Practice ◽  
Psychological Factors ◽  
Orofacial Pain ◽  
The Body ◽  
Treatment Modalities ◽  
Pain Condition ◽  
Factors Associated ◽  
Psychogenic Pain ◽  
Chronic Orofacial Pain ◽  
Frequent Site

Pain is one of the most common symptoms encountered in clinical practice and the head is a frequent site of pain. Chronic Orofacial Pain (COP) represents a complex pain condition with an etiology comprised of many factors including those falling within biological, psychological, and social domains. Psychogenic regional pain is a term used for “pain that patients feel in a region of the body where no peripheral cause can be found and is psychogenic in its evocation”. Even in the field of psychology/psychiatry, many aetiologies and psychodynamics have been related to the development of psychogenic pain. This article deals with the treatment modalities to deal with the psychological repercussions of physical, orofacial pain.

Toxicology

2017 ◽  
Author(s):  
Robert Laumbach ◽  
Michael Gochfeld
Keyword(s):  
Molecular Mechanisms ◽  
Molecular Targets ◽  
Toxicity Testing ◽  
The Body ◽  
Toxic Substances ◽  
Basic Principles ◽  
Practical Applications ◽  
Mechanisms Of Toxicity ◽  
Body Distribution ◽  
Threshold Doses

This chapter describes the basic principles of toxicology and their application to occupational and environmental health. Topics covered include pathways that toxic substances may take from sources in the environment to molecular targets in the cells of the body where toxic effects occur. These pathways include routes of exposure, absorption into the body, distribution to organs and tissues, metabolism, storage, and excretion. The various types of toxicological endpoints are discussed, along with the concepts of dose-response relationships, threshold doses, and the basis of interindividual differences and interspecies differences in response to exposure to toxic substances. The diversity of cellular and molecular mechanisms of toxicity, including enzyme induction and inhibition, oxidative stress, mutagenesis, carcinogenesis, and teratogenesis, are discussed and the chapter concludes with examples of practical applications in clinical evaluation and in toxicity testing.

scholarly journals Thermal Characteristics of Breast Surface Temperature in Healthy Women

2021 ◽  
Vol 18 (3) ◽  
pp. 1097
Author(s):  
Anna Lubkowska ◽  
Monika Chudecka
Keyword(s):  
Mammary Gland ◽  
Temperature Distribution ◽  
Surface Temperature ◽  
Thermal Characteristics ◽  
The Body ◽  
Imaging Method ◽  
Infrared Thermal Imaging ◽  
Ir Camera ◽  
Entire Area ◽  
Healthy Women

Thermography is widely used in the medical field, including in the detection of breast disorders. The aim of the research was to characterize the range of breast surface temperature values, taking into account the entire area of the mammary gland and, independently, the nipple, in healthy women. An additional aim was to assess the symmetry of the breast temperature distribution (using an IR camera) and the correlation of temperatures with the content of adipose tissue. Thermograms were made for the right and left breasts, each time delineating the area of the entire breast and a separate area of the nipple, chest, and abdomen. Analyzing the intergroup differences in temperature of selected body areas (Tmean), it was shown that, in all cases, they were significantly higher in younger women. Statistical analysis showed no significant differences between breast and nipple temperatures in relation to the body sides. The highest temperatures within the mammary gland were recorded for the nipple area. The use of the high-resolution digital infrared thermal imaging method in early and screening preventive diagnoses of changes in the mammary gland requires individual interpretation of the results, taking into account the assessment of the physiological pattern of temperature distribution in both breasts.

scholarly journals Simulation of Diffusion Processes in Chemical and Thermal Processing of Machine Parts

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 698
Author(s):  
Kateryna Kostyk ◽  
Michal Hatala ◽  
Viktoriia Kostyk ◽  
Vitalii Ivanov ◽  
Ivan Pavlenko ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Temperature Distribution ◽  
Thermal Treatment ◽  
Diffusion Processes ◽  
Nitrogen Concentration ◽  
The Body ◽  
Functional Dependencies ◽  
Technological Parameters ◽  
Gas Nitriding ◽  
Temperature State

To solve a number of technological issues, it is advisable to use mathematical modeling, which will allow us to obtain the dependences of the influence of the technological parameters of chemical and thermal treatment processes on forming the depth of the diffusion layers of steels and alloys. The paper presents mathematical modeling of diffusion processes based on the existing chemical and thermal treatment of steel parts. Mathematical modeling is considered on the example of 38Cr2MoAl steel after gas nitriding. The gas nitriding technology was carried out at different temperatures for a duration of 20, 50, and 80 h in the SSHAM-12.12/7 electric furnace. When modeling the diffusion processes of surface hardening of parts in general, providing a specifically given distribution of nitrogen concentration over the diffusion layer’s depth from the product’s surface was solved. The model of the diffusion stage is used under the following assumptions: The diffusion coefficient of the saturating element primarily depends on temperature changes; the metal surface is instantly saturated to equilibrium concentrations with the saturating atmosphere; the surface layer and the entire product are heated unevenly, that is, the product temperature is a function of time and coordinates. Having satisfied the limit, initial, and boundary conditions, the temperature distribution equations over the diffusion layer’s depth were obtained. The final determination of the temperature was solved by an iterative method. Mathematical modeling allowed us to get functional dependencies for calculating the temperature distribution over the depth of the layer and studying the influence of various factors on the body’s temperature state of the body.

Differential diagnosis of chronic orofacial pain

1974 ◽  
Vol 31 (1) ◽  
pp. 66-77 ◽  
Author(s):  
Charles C. Alling ◽  
H. Newton Burton
Keyword(s):  
Differential Diagnosis ◽  
Orofacial Pain ◽  
Chronic Orofacial Pain

scholarly journals Organophosphorus Poisoning

2008 ◽  
Vol 47 (172) ◽  
Author(s):  
Buddhi Prasad Paudyal
Keyword(s):  
Signs And Symptoms ◽  
Clinical Problem ◽  
Acute Poisoning ◽  
The Body ◽  
Organophosphorus Insecticides ◽  
Basic Principles ◽  
Initial Management ◽  
Organophosphorus Poisoning ◽  
Life Threatening ◽  
History Of

Acute poisoning by organophosphorus (OP) compounds is a major global clinical problem, withthousands of deaths occurring every year. Most of these pesticide poisoning and subsequentdeaths occur in developing countries following a deliberate self ingestion of the poison. Metacid(Methyl parathion) and Nuvan (Dichlorovos) are commonly ingested OP pesticides; Dimethoate,Profenofos, and Chlorpyrifos are other less frequently ingested compounds in Nepal. The toxicityof these OP pesticides is due to the irreversible inhibition of acetylcholinesterase (AChE) enzymeleading to accumulation of acetylcholine and subsequent over-activation of cholinergic receptorsin various parts of the body. Acutely, these patients present with cholinergic crisis; intermediatesyndrome and delayed polyneuropathy are other sequel of this form of poisoning. The diagnosisdepends on the history of exposure to these pesticides, characteristic manifestations of toxicityand improvements of the signs and symptoms after administration of atropine. The supportivetreatment of OP poisoning includes the same basic principles of management of any acutelypoisoned patient i.e., rapid initial management of airways, breathing, and circulation. Gastriclavage and activated charcoal are routinely used decontamination procedures, but their valuehas not been conclusively proven in this poisoning. Atropine is the mainstay of therapy, andcan reverse the life threatening features of this acute poisoning. However, there are no clearcut guidelines on the dose and duration of atropine therapy in OP poisoning. Cholinesterasereactivators, by regenerating AChE, can reverse both the nicotinic and muscarinic effects;however, this benefit has not been translated well in clinical trials. All these facts highlight thatthere are many unanswered questions and controversies in the management of OP poisoningand there is an urgent need for research on this aspect of this common and deadly poisoning.Key Words: poisoning, organophosphorus insecticides, decontamination, antidotes

scholarly journals Clinical Evaluation of Dental Metal Hazards and Therapeutic Effects of Shortwave Diathermy in Dental Medicine

2012 ◽  
Vol 2 (3) ◽  
pp. 88-95
Author(s):  
Chisato Mukai ◽  
Tetsuji Nakamoto ◽  
Yusuke Kondo ◽  
Chihiro Masaki ◽  
Atsumi Ohta ◽  
...  
Keyword(s):  
Blood Flow ◽  
Thermal Effect ◽  
Clinical Evaluation ◽  
The Body ◽  
Therapeutic Effects ◽  
Maxillofacial Region ◽  
Doppler Flowmetry ◽  
Whole Saliva ◽  
Dental Metal ◽  
Shortwave Diathermy

ABSTRACT Objective Shortwave diathermy causes increase in temperature from deep inside the body, results in upregulation of metabolism, and has analgesic effects. In this study, we explored the potential application of shortwave diathermy in the maxillofacial region by monitoring internal and external temperature changes, changes in blood flow, and resting saliva secretion under shortwave diathermy for subjects with and without dental metal restorations (MR) to confirm the safety and the limitation of shortwave diathermy for dental medicine. Materials and methods Twenty young healthy subjects were recruited (10 subjects with MR and 10 subjects without MR). Shortwave exposure was achieved with condenser-type probes placed on the bilateral mandibular angles, and the intraoral temperature was monitored. For functional analysis, unstimulated whole saliva before and after exposure was collected. The temperature and blood flow distributions of the exposed areas were then monitored by thermography and twodimensional (2D) laser Doppler flowmetry. Results Shortwave exposure for 20 minutes induced significant temperature increases in all groups (p ≤ 0.05). The subjects reported no discomfort. When subjects without MR held gold or titanium crowns in their mouths, the thermal effect by shortwave diathermy was reduced. Resting saliva upon exposure only increased significantly in metal-free subjects, and amylase concentration was also increased, but the level of the salivary stress biomarker chromogranin A was unchanged. Furthermore, thermography showed that shortwave diathermy significantly increased the surface temperature for cheek skin and the buccal mucosa; however, this increase failed to elevate surface blood flow. Conclusion Shortwave diathermy induces temperature increases in the maxillofacial region. MR did not cause excessive heating, on the contrary, reduce the thermal effect of shortwave radiation. The temperature rise maintains upregulation in salivary function, which could be utilized safely in dental medicine. How to cite this article Mukai C, Nakamoto T, Kondo Y, Masaki C, Ohta A, Hosokawa R. Clinical Evaluation of Dental Metal Hazards and Therapeutic Effects of Shortwave Diathermy in Dental Medicine. Int J Prosthodont Restor Dent 2012;2(3): 88-95.

Sign in / Sign up

Export Citation Format

Share Document