Introduction Of Laser Technology Research Articles

Laser Dentistry: Illuminating the Future of Dental Care

In recent years, there has been a significant technological advancement in the field of dentistry with the introduction of laser technology. Laser dentistry, a minimally invasive approach, has revolutionized various aspects of dental care, offering numerous benefits for both patients and practitioners1. This editorial aims to shed light on the promising potential of laser dentistry and its impact on modern dental practice.

Guidelines for improving laser targeting device in military

The invention of the laser can rightfully be considered one of the most significant discoveries of the 20th century. At the very beginning of the development of this technology, they already predicted a completely universal applicability, from the very beginning the prospect of solving various problems was visible, even though some tasks were not even visible on the horizon at that time. Monochromatic laser radiation can be obtained in principle at any wavelength, both in the form of a continuous wave with a certain frequency and in the form of short pulses lasting up to fractions of a femtosecond. Focusing on the studied sample, the laser beam is subjected to nonlinear optical effects, which allows researchers to perform spectroscopy by changing the frequency of light, as well as to perform coherent analysis of processes by controlling the polarization of the laser beam. Lasers were initially limited more to scientific research and military applications. The report examines the use of laser targeting. Today there are several areas in which the introduction of laser technology in the military industry follows: air, ground and underground location, communications, navigation systems, rifles, missile defense systems. In the report let’s present some of the applications of lasers, as well as protection of them

Prospects for use of laser processing equipment in metalworking

The arguments for widespread use of the new class of fibre laser in the design of the technological equipment and introduction of laser technologies in production are given. The technological possibilities of these laser are demonstrated.

New and Advanced Picosecond Lasers for Tattoo Removal.

Early methods of tattoo removal ultimately resulted in unacceptable cosmetic outcomes. While the introduction of laser technology was an improvement over the existing chemical, mechanical, and surgical procedures, the use of nonselective tattoo removal with carbon dioxide and argon lasers led to scarring. Q-switched lasers with nanosecond (10-9) pulse domains were considered to have revolutionized tattoo treatment, by selectively heating the tattoo particles, while reducing the adverse sequelae to adjacent normal skin. Theoretical considerations of restricting pulse duration, to heat tattoo particles to higher temperatures, proposed the use of sub-nanosecond pulses to target particles with thermal relaxation times lower than the nanosecond pulses in Q-switched lasers. Initial studies demonstrated that picosecond (10-12) pulses were more effective than nanosecond pulses in clearing black tattoos. Advances in picosecond technology led to the development of commercially available lasers, incorporating several different wavelengths, to further refine pigment targeting.

Design of Intelligent Transportation System Based on the Technology of Information and Communication Engineering

With the development of social economy and city urbanization, city road traffic network has developed rapidly, great convenience for people's travel, but also led to a sharp increase in traffic demand. The direct consequence is the rapid expansion of traffic flow, traffic-jam, the city has becoming increasingly serious, frequent traffic accidents. The worsening traffic environment has become a global problem. As a very important means to solve the problem of global transportation, intelligent transportation system (ITS) with real-time, efficient, accurate analysis, processing and control ability has won great recognition, has make a spurt of progress of development. Traffic information detection technology is an important part of the intelligent transportation system, has the abilities of real-time data acquisition, analysis, processing and distribution of a wide range of road network traffic data information, has gradually become the traffic administrative department of the daily traffic management activities and the important fields in traffic research work. The traffic information collection technique not only can effectively help the traffic management and law enforcement, and to provide basis data for future traffic planning. The introduction of laser technology, it will play an important role in the development of traffic detection techniques play.

Introduction of Laser Technology and Procedure Use for Benign Prostatic Hyperplasia: Data from Florida

To examine the association of laser technology adoption in a market with surgery rates for benign prostatic hyperplasia. Using the Florida files from the State Ambulatory and Inpatient Surgery Databases (2001-2009), we identified all patients who underwent transurethral surgery for benign prostatic hyperplasia. We calculated rates of benign prostatic hyperplasia surgery for all markets within the state (defined by Hospital Service Area) over time. Markets were split into 3 categories: (1) Always offering, (2) never offering, or (3) initially not offering but adopting laser prostatectomy after 2001. We used multivariable regression models to estimate surgery rates adjusted for other market characteristics. Interaction terms were included in the models to examine differences in time trends between market categories. After adjusting for market characteristics, time trends differed by market category (P < .001). Surgery rates decreased from 318 to 248 procedures per 100,000 men in markets always offering laser prostatectomy (P < .001). Markets never offering laser surgery had much lower rates that remained stable (180-187 procedures per 100,000 men, P = .805). In markets adopting laser technology, rates increased from 268 to 296 procedures per 100,000 men after adoption (P = .044), such that 4 years after adoption these markets had the highest rates among the 3 categories. Adoption of laser technology is associated with rising rates of surgical intervention for benign prostatic hyperplasia. This trend appears to be induced by the introduction of laser surgery.

16 lat doświadczeń w mikrochirurgii krtani z użyciem lasera CO 2: aspekt współpracy anestezjologa i laryngologa – w materiale Katedry i Kliniki Laryngologii SUM w Katowicach

Laryngeal microsurgery is currently the primary method of treatment of many diseases of the larynx. Breakthrough for the development of laryngeal microsurgery was the introduction of laser technology. The laryngeal microsurgery is used mainly laser CO₂. Endoscopic laryngeal microsurgery using the laser poses a unique challenge to the anesthesiologist, ensuring safe conditions of anesthesia, the patient and simultaneously appropriate operating conditions for the surgeon for precisely perform the procedure. Between 1995 and 2010 carried out in the Department of Otolaryngology SUM 832 microsurgical operations of the larynx using a CO₂ laser. The perioperative management and close cooperation with the surgeon and anesthesiologist are essential for safe and efficient conduct of the operation the larynx using a microsurgical CO₂ laser.

Technological Innovation Leads to Fundamental Understanding in Cell Biology

Technological Innovation Leads to Fundamental Understanding in Cell Biology

Laser treatment of pigmented and vascular lesions in the office.

The treatment of vascular and pigmented lesions has been greatly improved since the introduction of laser technology. Utilizing the principles of selective photothermolysis, physicians can be very specific in their treatment, maximizing injury of the selected target and minimizing damage to surrounding structures. Treatment of vascular lesions is accomplished with a variety of wavelengths. The pulsed-dye laser system remains the gold standard with which all others are compared. A variety of advances in technology in recent years have greatly improved laser treatments. These include the addition of longer pulse widths, variable spot sizes, and a variety of skin-cooling techniques. With today's laser technology, most facial telangiectasias can be treated in a single session with minimal downtime. Angiomas often require more than one treatment. Port wine stains and hemangiomas still require multiple treatments, but treatment sessions are less painful and recovery is quicker. The treatment of pigmented lesions has also improved with new technology. Q-switched systems provide optimal treatment for most pigmented lesions. In general, superficial pigmented lesions are treated with shorter-wavelength systems, and deeper lesions are treated with longer-wavelength systems. The CO2 laser continues to have a role in difficult-to-treat lesions.

LACONA: past, present, and future?

The introduction of laser technologies into the field of art conservation and the formation of the associated professional society, LACONA, have paralleled similar events that took place in laser application to the entertainment, science, manufacturing, military ordnance, communication, and medical disciplines (to name a few). At the time of the establishment of LACONA, numerous conservation applications for lasers had been shown possible. During the early years of the society, many papers presented at this forum reported on projects that had developed some of these into practical conservation tools. In many cases, this involved producing models for the laser processes, advancing the associated laser technologies, or determining optimum laser parameters for particular circumstances. In recent years, maturing research reported here has focused on case histories, refinements and adaptations in technique, and the broadening of databases. Much remains to be accomplished along these veins and will continue to be reported in our future assemblies. However, the success of LACONA suggests a potential for a much broader role of service within the art-conservation community. Specifically, there are numerous new and emerging technologies that could be useful in conservation. Scientifically, they have a great deal of commonality with laser technology, except for their operation outside of the visible portion of the electromagnetic spectrum. A few of these are surface penetrating radar, monopulse radar, radar tomography, millimeter wave imaging, portable and free-induction nuclear magnetic resonance, and X-ray backscatter imaging. In addition, there are laser technologies such as photoacoustic spectroscopy and photodynamic chemistry that hold promise for conservation science, but have yet to be applied. Consequently, this may be a propitious time to consider opening up LACONA to incorporate such allied methodologies in order to encourage the continuing vitality and relevance of the organization to art conservation.

Transoral laser microsurgery in carcinomas of the oral cavity, pharynx, and larynx.

Since the introduction of laser technology in the 1960s, use of the technique in treating laryngeal diseases has demonstrated several advantages over conventional resections in selected cases. The authors review the published data on oncologic laser surgery for the treatment of head and neck carcinomas, and they also describe their own clinical experience with transoral laser surgery for the treatment of carcinomas of the oral cavity, pharynx, and larynx. Laser surgery has achieved a key position in minimally invasive treatment concepts in the ears, nose, and throat area, especially for the treatment of malignancies of the upper aerodigestive tract. The CO2 laser is the approach most commonly used. New and improved applications of laser therapy in the treatment of cancer are being explored. As more surgeons become experienced in the use of lasers and as our knowledge of the capabilities and advantages of this tool expands, lasers may play a larger role in the management of head and neck cancers.

The Advantage of CO2-Treated Dental Necks, in Comparison with a Standard Method: Results of an in Vivo Study

Various methods are used for treatment of hypersensitive dental necks. They all aim to seal exposed dentinal tubules, which are open toward the oral cavity and transmit stimuli to the sensitive nerve endings of the tooth pulp. The main sealing materials are fluoride preparations, strontium chloride, and hydroxyapatite. However, these materials must be applied periodically to achieve permanent freedom from pain. Since the introduction of laser technology into dentistry, efforts have been made to treat dentine hypersensitivity with the laser. An in vitro study revealed that CO2 laser irradiation results in almost complete closure of the dentinal tubules in the dental neck region. In the present in vivo study, the efficacy of laser treatment was examined in 72 patients with dentine hypersensitivity and 72 control patients over a period of 12 weeks. When success was defined as complete freedom from pain, the success rate in the laser group was 94.5%; when marked pain relief was included in the definition of treatment success, 98.6% of the patients were treated successfully. Treatment of the control group with conventional dental neck fluoridation resulted in no marked improvement. Laser Doppler measurements of pulpal blood flow immediately before and after treatment revealed no effects of laser irradiation on pulpal blood flow. Dentine samples were obtained from the dental necks 6 weeks after laser treatment and examined with atomic absorption spectroscopy (AAS). Tin was present in the samples, which suggests that the combined laser treatment and fluoridation result in permanent integration of fluoride in the dentine surface.

Recent development and applications of an optical method for measurements of thermophysical properties

The experimental determination of thermophysical properties has been greatly improved by the introduction of laser technology. The laser beam is used for sensing and also for heating (or exciting) the specimen. The advantage of using a laser beam is most strongly felt in the measurement of the thermal conductivity or the thermal diffusivity, which are some of the most difficult properties to measure. Interesting features of new techniques for investigating various aspects of thermal conductivity in fluids and solids are reviewed. An optical method, the so-called forced Rayleigh scattering method, or the laser-induced optical-grating method, has been developed and used extensively by the present author's group. The method is a high-speed remote-sensing method which can also quantitatively detect anisotropy, namely, direction dependence of heat conduction in the material. It was used for determination of the thermal diffusivity and its anisotropic behavior for high-temperature materials such as molten salts, liquid crystals, extended polymer samples, and flowing polymer melts under shear. Interesting applications of the method were demonstrated also for thermal diffusivity “mapping” and microscale measurement.

Recent Advances in Cochlear Blood Flow Measurements

Changes in blood flow to the inner ear have been thought to influence or underlie a number of cochlear diseases, including some forms of noise-induced hearing loss, sudden hearing loss, and Meniere's disease. Recently, important advances have been made in two technologies for the study of cochlear blood flow. The first is in the area of vital microscopic studies of cochlear microcirculation, and the second is based on the introduction of laser technology in the form of laser Doppler flowmetry. In this report, measurements are given of changes in cochlear circulation caused by carbon dioxide breathing, intravenous phenylephrine injection, systemic hemodilution, positive end expiratory pressure, and direct electrical stimulation of the cochlea. From these changes, we observe that cochlear blood circulation responds to systemic blood pressure alterations and is subject to local flow control mechanisms. Linearity and speed of response of the laser Doppler instrumentation also are shown. These advances show promise for contributing to our knowledge of control mechanisms of inner ear blood flow and for revealing the influence of various pharmacologic agents of potential clinical value.

THE CLINICAL CLASSIFICATION OF MACULO‐PATHIES IN ADULTS A SURVEY

The development of fluorescein angiography and the introduction of laser technology into the treatment of macular diseases has considerably widened our knowledge of the pathological processes in the macular region. A number of clinicopathological reports have confirmed the angio‐graphic findings and interpretations.The aetiological factors that lay behind the clinical lesions are, however, still unknown.The clinical pictures have, as a result of the above, more relation to the histological than to the aetiological classifications.Clinical classification includes an analysis and categorization of the individual diseases. This process takes place daily in the surgery of every ophthalmologist by means of the ophthalmoscope.The ophthalmoscopical examination is enhanced by knowledge of the angiographic picture of the lesion. This means that in the great majority of cases it is possible using the ophthalmoscope alone, to evaluate the type and anatomical localization of the pathological lesions. Fluorescein angiography is the most important single supplementary examination, both with regard to the diagnosis, indication for treatment and the follow‐up.The present work describes 9 clinically and histopathologically well‐defined lesions, which isolated or in combination are seen in the majority of adult macular diseases.