• Title/Summary/Keyword: low level laser treatment

Search Result 90, Processing Time 0.041 seconds

Analysis of Level Characteristics of 630nm Light Emitting Diode Module (630nm Light Emitting Diode 모듈의 레벨 특성 평가)

  • Kim, Tae-Gon;Cheon, Min-Woo;Park, Yong-Pil;Kim, Seong-Hwan;Song, Chang-Hun;Kim, Young-Su
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2006.11a
    • /
    • pp.347-348
    • /
    • 2006
  • This paper performed the basic study for developing the Photodynamic Therapy Equipment for medical treatment. The equipment have been manufactured by using the High Bright Light Emitting Diode and TLC5941 integrated circuit. As a result, 630nm Light Emitting Diode Module was made for the optimization of irradiation condition. And we confirmed the current change according to increase of the level of Light Emitting Diode Module.

  • PDF

Effects of Low Level Laser Therapy on Herpetic Neuralgia (대상포진성 신경통에 대한 저출력 레이저 치료)

  • Moon, Won-Bae;Kim, Hae-Kyu;Baik, Seong-Wan;Kim, Inn-Se;Chung, Kyoo-Sub
    • The Korean Journal of Pain
    • /
    • v.3 no.2
    • /
    • pp.139-143
    • /
    • 1990
  • There are several methods for the treatment of herpetic neuralgia, but there is no method that results in complete remission. The laser has lately come into use to reduce several acute or chronic pains. Twenty six patients who suffered from herpetic neuralgia were treated with Ne-Ne and Ga Al AS lasers simultaneously 2 or 3 times per week. In order to determine the degree of pain relief, we used the visual analogue scale. The results were as follows. 1) Low level laser therapy (LLLT) was a non-invasive, simple method. 2) The improvement rate after 15 irrradiations of laser was 63%. 3) The Highest improvement rate (24%) was shown after one irradiation of laser. 4) Only one patient above age 60 (3.8%) developed postherpetic neuralgia. 5) There was no significant difference effects of LLLT between above and below the age of 60. 6) There was no complication during or after irradiation of laser.

  • PDF

An immunohistochemical study on the effects of low-level laser irradiation on expression of actin filaments of human gingival fibroblasts in vitro (저출력레이저조사가 배양치은섬유아 세포의 actin filaments발현에 미치는 영향에 관한 면역조직화학적 연구)

  • Kim, Hyung-Sung;Kim, Chun-Suk;Kim, Hyung-Soo;Kim, Hyun-Seop;Kim, Byung-Ock;Han, Kyung-Yoon
    • Journal of Periodontal and Implant Science
    • /
    • v.26 no.4
    • /
    • pp.1003-1012
    • /
    • 1996
  • The induction of a phenotype with preoperties may have clinical significance in the acceleration of the wound-healing process. Wound contraction involves a specialized cell known as the myofibroblast. The myofibroblasts can be identified by their intense staining of actin bundles with anti-actin antibody. Tissue-specific actin distribution is correlated with the contractile activity of the myofibroblasts and smooth muscle etc. This study was performed to determine the expression of actin filaments in the cytoplasm of cultured human gingival fibroblsts after GaAs laser(BIOSAER, Korea) irradiation. Human gingival fibroblasts were cultured from explants of normal interdental gingival tissue. The third-generation fibroblasts were used for immunohistochemical study. The cultured fibroblasts were exposed $0.53joule/cm^2$(lmW, 7 mimutes) of energy density, and then observed by immunohistochemical method using, rabbit anti0gelsolin, hen smooth muscle polyclonal antibody(Chemicon international inc.), and biotinylated goat anti-rabbit IgG(Vectastain) 24-, 36-, 48-hour after laser irradiation Following results were obtained ; 1. In nonirradiated cultures, round shaped active fibroblasts with abundant cytoplasm and prominet nucleoli were observed. 2. In 24- and 36-hour cultures after laser irradiation, spindle shaped cells with long process were observed. The intensity of stain was seen in cytoplasm of these modified fibroblasts. 3. In 48-hoour cultures after laser irradiation, stained spindle shape cell were not observed. The results suggest that the effect of the galium-arsenide laser treatment on cultured gingival fibroblasts is the rapid development of cytoplasmic actin filaments.

  • PDF

PHOTOTOXIC EFFECTS OF LOW LEVEL LASER IRRADIATION ON HUMAN OSTEOSARCOMA CELLS (골육종세포에 미치는 레이저 조사의 광독성 효과)

  • Son, Jang-Ho;Cho, Young-Chul;Ryu, Sung-Ho;Kim, Gyoo-Cheon;Sung, Iel-Yong;Park, Bong-Soo
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
    • /
    • v.30 no.6
    • /
    • pp.509-515
    • /
    • 2004
  • Photodynamic therapy(PDT) has advanced to clinical trials for the treatment of a variety of solid tumors and presents an alternative treatment option for tumors resistant to chemo-and/or radio-therapy. PDT is based on the combination of laser light of appropriate wavelength and energy to activate a systemically or locally applied photosensitizer that concentrates preferentially in malignant tissues. In this study, phototoxicity of laser EIT 21 was analysed in human osteosarcoma cell(HOS) and the second objective of this study was to determine the ability of laser EIT 21 to induce apoptosis. This study demonstrated that laser EIT 21 had a phototoxicity to HOS cells. In order to examinate whether cell death was induced by necrosis or apoptosis, variety of techniques which assess apoptosis were used. TUNEL assay showed only a few the positive reaction on condensed nuclei. It is hard to find condensed or fragmented nuclei on HOS cells irradiated with laser EIT 21 in Hemastat and AO/EB stain. By DNA electrophoresis, cells also did not show DNA degradation characteristic of apoptosis with a ladder pattern of DNA fragments. Apoptosis-related factors were analyzed by western blotting. The expression of p53 was constant and cells irradiated with laser did not show the caspase-3 and PARP degradation, therefore we suggest that p53 and caspase-3 are not involved in laserinduced cell death.

Three Cases of Sudden Hearing Loss Improved after East-West Medical Combined Treatment through Cooperation in a Hospital (동일기관 내 협진을 통한 돌발성 난청의 한·양방 병용치험 3례)

  • Lee, Ji-Won;Hong, Seung-Ug
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
    • /
    • v.35 no.2
    • /
    • pp.82-94
    • /
    • 2022
  • Objectives : The purpose of this study is to report the effect of east-west medical combined treatment of sudden sensorineural hearing loss(SSNHL) through cooperation in a hospital. Methods : We treated three patients diagnosed as SSNHL by combination of herbal medicine, acupuncture, pharmoacupuncture, moxibustion, cupping, laser therapy and conventional medications. We evaluated the results of this treatment with pure tone audiometry, word recognition score(WRS), the changes in distortion product otoacoustic emissions(DPOAE) and visual analogue scale. Results : One of them showed a meaningful improvement in the hearing level of the low frequency region. The others showed 'Complete recovery' in pure tone audiometry and WRS. The subjective symptoms including tinnitus and ear fullness improved in three patients. Conclusion : This study suggests that east-west medical combined treatment is effective on SSNHL patients.

Limited mandibular movements after removal of the mandibular third-molar: use of the anterior bite plane and complementary therapies

  • Palinkas, Marcelo;Nassar, Regina Maura Arantes;Nassar, Mariangela Salles Pereira;Bataglion, Solange Aparecida;Bataglion, Cesar;Sverzut, Cassio Edvard;Hotta, Takami Hirono;Regalo, Simone Cecilio Hallak
    • CELLMED
    • /
    • v.2 no.1
    • /
    • pp.6.1-6.4
    • /
    • 2012
  • The traumatic removal of the mandibular third molar may promote post chirurgic consequences such as orofacial pain and limited mandibular movements. The aim of this case report is to describe the use of an anterior bite plane and complementary therapies (low level laser therapy and acupuncture) to treat the muscular dysfunction and the painful symptoms. A 33 year-old male patient who had a severe malocclusion and signs and symptoms of temporomandibular dysfunction was submitted to an initial clinical examination: electromyography of the masticatory muscles and IRM of the temporomandibular joint. After treatments, the results showed reduced pain symptoms and an increase of the mandibular movements and adequated electromiographic activities. The authors concluded that the combination therapies may be used as an alternative treatment because it satisfied the functional requirements of the patient and provided an asymptomatic clinical condition.

Physiological and Spectroscopic Changes of Rice by Nitrogen Fertilization Conditions

  • Jung-Il Cho;Dongwon Kwon;Hoejeong Jeong;Wan-Gyu Sang;Sungyul Chang;Jae-Kyeong Baek
    • Proceedings of the Korean Society of Crop Science Conference
    • /
    • 2022.10a
    • /
    • pp.106-106
    • /
    • 2022
  • An appropriate amount of nitrogen fertilizer input during rice cultivation is essential for rice growth, quality control, and reduction of greenhouse gases in paddy fields. Therefore, it is necessary to develop a technology that can check whether an appropriate amount of fertilizer is applied in paddy fields. In this study, we tried to derive a method for diagnosing nitrogen fertilization level using spectroscopic diagnosis, physiological analysis, and molecular indicator genes. Nitrogen fertilization treatment was performed in a greenhouse by dividing into five treatment conditions: no fertilization (N0), low fertilization (N0.5), standard fertilization (N1.0), excessive fertilization (N1.5), and double fertilization (N2.0), respectively. Growth characteristics analysis was investigated by nitrogen fertilization conditions and growth stages, and the height of the canopy was analyzed using a laser scanner. Physiological and spectroscopic analyses were performed by analyzing chlorophyll and sugar contents and measuring SPAD and leaf spectrometer on rice leaves. In addition, real-time PCR experiment was performed to check the relative expression levels of several known nitrogen metabolism related genes. These results suggest that spectroscopic techniques can be helpful in diagnosing the level of nitrogen fertilization in rice paddy fields.

  • PDF

Diagnosis and Treatment of Temporomandibular Disorder in Pregnant Women (임신부에서 측두하악장애의 진단과 치료)

  • Cha, Ji-Hyun;Park, June-Sang;Ko, Myung-Yun
    • Journal of Oral Medicine and Pain
    • /
    • v.25 no.2
    • /
    • pp.241-245
    • /
    • 2000
  • In this case report, I discussed the diagnosis and treatment of two pregnant women with temporomandibular disorders(TMD) who visited the Department of Oral Medicine, PNUH. Also, I reviewed some investigations of diagnosis and treatment of TMD in pregnant women. The obtained results were as follows; 1. No single X-ray diagnostic procedure for TMD results in radiation dose that threatens the well-being of the developing embryo and fetus. 2. Most non-steroidal anti-inflammatory drugs(NSAIDs) have commonly used because these drugs are considered to be nonteratogenic, but these agents are not recommended for routine use after 3rd trimester. 3. Electro-acupuncture stimulation therapy(EAST) is contraindicated for 1st trimester, and ultrasonic deep heat therapy, microwave deep heat therapy, low level laser therapy, myo-monitor are not contraindicated for pregnant women but clinician must consider some risk of adverse fetal effects. 4. The occlusal stabilization splint may be used for pregnant women, if it is fabricated indirectly. 5. Surgical treatment is contraindicated for pregnant women.

  • PDF

Laserthermia Induced Histological Changes in Different Thermal Condition (Laser Hyperthermia에서 조건변동에 따른 병소변화)

  • Kim, Sang-Woo;Lee, Kyung-Yup;Kim, Seong-Ho;Bae, Jang-Ho;Kim, Oh-Lyong;Choi, Byung-Yearn;Cho, Soo-Ho;Shin, Hyun-Jin;Lee, Jun-Ha
    • Journal of Yeungnam Medical Science
    • /
    • v.12 no.2
    • /
    • pp.331-338
    • /
    • 1995
  • Laserthermia is a new method of local hyperthermia using fiber optic guided probe with computer controlled Nd-YAG laser system. We used a synthetic sapphire probe and allowed irradiation with contolled low power laser energy (less than 5W), in different thermal condition (temprature: 38.5~50 degrees C) for 10 minutes, in the normal brain tissue of 18 rabbits. In results, the histological changes of brain tissue was variable (myelin condensation, chromatin condensation, nuclear waving and palisading, RBC discoloration, cell necrosis) in microscopic findings after laser irradiation, but changing area was not occured proportionally in thermal condition level. Cell necrosis appears to over 44.5 degrees C and the distance was about 1.25 mm. This study, using computer controlled laserthermia system for interstitial local hyperthermia, may offer many advantages in the experimental treatment and clinical management of tumor. Minimizing normal tissue damage is now being developed.

  • PDF

Biophysical therapy and biostimulation in unfavorable bony circumstances: adjunctive therapies for osseointegration

  • Kim, Yong-Deok
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
    • /
    • v.38 no.4
    • /
    • pp.195-203
    • /
    • 2012
  • Dental implants using titanium have greatly advanced through the improvement of designs and surface treatments. Nonetheless, the anatomical limits and physiological changes of the patient are still regarded as obstacles in increasing the success rate of implants further, even with the enhancement of implant products. So there have been many efforts to overcome these limits. The intrinsic potential for bone regeneration can be stimulated through adjuvant treatments with the continuous improvement of implant properties, and this can play an important role in achieving optimum osseointegration toward peripheral bone tissue and securing ultimate long-term implant stability in standard surgical procedures. For this purpose, various chemical, biological, or biophysical measures were developed such as bone grafts, materials, pharmacological agents, growth factors, and bone formation proteins. The biophysical stimulation of bone union includes non-invasive and safe methods. In the beginning, it was developed as a method to enhance the healing of fractures, but later evolved into Pulsed Electromagnetic Field, Low-Intensity Pulsed Ultrasound, and Low-Level Laser Therapy. Their beneficial effects were confirmed in many studies. This study sought to examine bone-implant union and its latest trend as well as the biophysical stimulation method to enhance the union. In particular, this study suggested the enhancement of the function of cells and tissues under a disadvantageous bone metabolism environment through such adjunctive stimulation. This study is expected to serve as a treatment guideline for implant-bone union under unfavorable circumstances caused by systemic diseases hampering bone metabolism or the host environment.