• 한국치위생학회지
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• 제12권4호
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• pp.655-663
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• 2012

Objectives : This study was progressed a research with the aim of using it as basic data necessary for a plan in order to increase qualitatively medical level for patients who feel anxiety about dental treatment, and of offering basic data for improving the whole medical services by grasping conditions and satisfaction level with laser therapy in patients who visited dental clinic. Methods : The statistical analysis was carried out t-test and ANOVA by using SPSS(PASW statistics) 18.0. When there is statistically significant difference in analysis of variance, post-test was carried out by using Duncan multiple range test. Results : In therapy kinds of using laser, gingival treatment was the largest with 37.0%. It was the highest in likely seeming to be not painful with 32.9% as for a decisive factor, which came to receive laser therapy, and in having been enough to endure even if having been slightly tingling as for pain level. Conclusions : This study can be considered to have significance in changing recognition of medical cure by surveying patients satisfaction with using laser as a method for slightly solving elements of fear and anxiety about dental treatment and to have its value as basic data for seeking improvement plan for diverse medical services in the future.

• Current Optics and Photonics
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• 제5권5호
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• pp.554-561
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• 2021

Indocyanine green (ICG) is a cyanine dye that has been used in medical diagnostics based on fluorescence imaging, and in medical therapy based on the photothermal effect. It is important to systematically understand the photothermal effect and fluorescence characteristics of ICG simultaneously. By varying a number of conditions such as laser power density, laser irradiation wavelength, concentration of ICG solution, and exposure time of laser irradiation, the intensity properties of fluorescence and the temperature change induced by the photothermal effect are measured simultaneously using a charge-coupled-device camera and a thermal-imaging camera. The optimal conditions for maximizing the photothermal effect are determined, while maintaining a relatively long lifetime and high efficiency of the fluorescence for fluorescence imaging. When the concentration of ICG is approximately 50 ㎍/ml and the laser power density exceeds 1.5 W/cm², the fluorescence lifetime is the longest and the temperature induced by the photothermal effect rapidly increases, exceeding the critical temperature sufficient to damage human cells and tissues. The findings provide useful insight into the realization of effective photothermal therapy, while also specifying the site to be treated and enabling real-time treatment monitoring.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제21권3호
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• pp.298-302
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• 1999

Currently dental laser is used at a variety of dental treatment and many favorable clinical case reports are presented. We performed this study for the presentation of the validity of dental laser which are available and supportable in the oral and maxillofacial surgery. From October, 1998 to March, 1999, dental laser was used in 70 cases. Male patients were 38, female 32. The age ranged from 5 to 77, with a mean of 45.4. Indicated cases were 18 chronic periodontitis, 11 infections, 6 atypical pain, malignant or benign tumor, precancerous lesion, abnormal frenum, TMJ disorder, mucocele, and so forth. $CO_2$ laser(Sharplan 15F, Sharplan Co.) was used in 40 cases, Ho-YAG laser(Duopulse 2000, Excel Co.) 11, Nd-YAG(Duopulse 2000, Excel Co.) 18. We present and discuss about the objectiveness, availability, and future application of laser with case reports.

• 한국전기전자재료학회논문지
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• 제20권8호
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• pp.736-741
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• 2007

Low level laser therapy has various therapy effects, This paper performed the basic study for fabricating the low level laser therapy apparatus, and one of the goals of this paper was to make this apparatus used handily. The apparatus has been fabricated using the laser diode and microprocessor unit. The apparatus used a 660nm, 785nm and 850nm laser diode for laser medical therapy and was designed for a pulse width modulation type to increase stimulation effects. To raise the stimulus effect of the human body, the optical irradiation frequency could be set up. In result, the $1{\sim}10\;Hz$ irradiation frequency could be controlled stably.

• Medical Lasers
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• 제9권2호
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• pp.184-186
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• 2020

Lower eyelid blepharoplasty is a popular facial rejuvenation surgery that restores the infraorbital region. The procedure is performed by removing excessive fatty tissues, muscles, and other unnecessary structures. The structure of the eyelid differs from person to person and is quite complex; therefore, numerous side effects are expected. Common lower eyelid blepharoplasty complications are asymmetrical faces, retrobulbar hemorrhage, blurred vision, and ectropion. This paper reports a case of a prominent periorbital vein after lower eyelid blepharoplasty. The prominent periorbital vein after surgery is a rare side effect that has not been reported to the best of the author's knowledge. This case was treated with a long-pulse 1,064-nm neodymium:yttrium-aluminum-garnet laser.

• 한국광학회지
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• 제1권1호
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• pp.107-113
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• 1990

Characteristics and applications of three major types of lasers are discussed. They are chemical-metabolic, thermal destructive, and nonthermal mechanical lasers. The thermal destructive lasers ($CO_2$, Argon, and Nd:YAG) are especially explained in detail with regard to energy density, wavelength, fluence, stage of thermal destruction, and advantages of laser surgery. Excimer and Q-swiched lasers are discussed as nonthermal mechanical ones. Delivery system, optical fiber and articulated arm, is also discussed. Finally, recent advancements of medical laser are included in the conclusion.

• 한국레이저가공학회:학술대회논문집
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• 한국레이저가공학회 2000년도 추계학술발표대회 논문개요집
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• pp.3-6
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• 2000

• 한국레이저가공학회:학술대회논문집
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• 한국레이저가공학회 2005년도 추계학술발표대회 논문집
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• pp.57-98
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• 2005

• Tuberculosis and Respiratory Diseases
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• 제45권3호
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• pp.624-629
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• 1998

기관내 삽관 후 발생한 기관협착환자의 치료는 아직 완전한 치료법이 정립되어 있지 않아 다양한 치료법들이 이용되고 있는 실정이며 경직성 기관지경이나 풍선도관을 이용한 물리적인 확장, 혹은 레이저시술 후 스텐트 삽입등이 수술적인 치료 전에 할 수 있는 치료법이다. 저자등은 레이저시술에 이은 풍선 도관으로 확장을 시행한 기관내 삽관 후 발생한 기관협착 1례를 문헌고찰과 함께 보고하는 바이다.

• 대한의용생체공학회:의공학회지
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• 제45권2호
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• pp.81-89
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• 2024

Purpose : This study conducted a systematic review and meta-analysis to evaluate the clinical effectiveness of laser acupuncture for each condition using information from laser acupuncture trials registered on clinicaltrials.gov from January 2013 to June 2023. Methods : We quantitatively and qualitatively analysed the results of 16 clinical trials of laser acupuncture whose research results were confirmed. A risk of bias assessment was also carried out to assess the quality of each clinical trial. Results : A meta-analysis including three clinical trials was conducted to evaluate the comparative effectiveness of laser acupuncture and sham laser acupuncture in reducing pain and found that the laser acupuncture group had a statistically significant reduction in pain compared with the sham laser acupuncture group. In addition, 11 of the 13 trials not included in the meta-analysis showed a positive effect of laser acupuncture. Conclusion : Although laser acupuncture has a long history of clinical use and a lot of research, there is still some scepticism due to the lack of a clear mechanism of action and inconsistent reports of clinical effectiveness. In addition, there is a significant lack of systematic reviews of clinical evidence for major disease specific, and ongoing research is needed to establish an objective evidence base for the clinical effectiveness of laser acupuncture.