scholarly journals Uso do laser de baixa potência em estrias de distensão: ensaio clínico randomizado controlado

2018 ◽  
Vol 28 (2) ◽  
pp. 28710
Author(s):  
Bethina Bernardon Busatta ◽  
Karoline Calichio Medeiro ◽  
Lorrainy Rufino Velozo ◽  
Camila Mayumi Martin Kakihata ◽  
Francyelle dos Santos Soares ◽  
...  
Keyword(s):  
Treatment Group ◽  
Treated Group ◽  
Low Level Laser Therapy ◽  
Control Group ◽  
Low Level ◽  
Non Invasive ◽  
Low Level Laser ◽  
Level Laser ◽  
Epilepsy Diagnosis

AIMS: To analyze the effects of low-level laser therapy (660nm) in the treatment of striae alba.METHODS: A randomized clinical trial was conducted with 20 women equally divided into a control group and a treatment group. For inclusion, they should have striae alba in the gluteal region and accept to participate in the study. Exclusion criteria were other treatment for striae, pregnancy, steroid use, smoking, cancer diagnosis, hemorrhagic areas on the skin, diagnosis of epilepsy, diagnosis of thrombosis, or any cognitive impairment. Twelve applications of 660 nm laser were performed for four weeks. After another four weeks of follow-up, a reevaluation was performed. After each application, photos were taken from the region to evaluate the size of the striae by means of scanned planimetry, which calculates the percentage of area occupied by the striae. For this evaluation, the photos taken at the first application (AV1), the sixth (AV2), the 12th (AV3) and the last evaluation, after four weeks of treatment completion (AV4), were used. Qualitative evaluations were also performed by touch (depth) and visual inspection (hue and size).RESULTS: The analysis by planimetry showed that there was no difference between the area occupied by the striae when comparing the various evaluations of the same group, until the AV3. However in AV4 (four weeks after the last laser application) of the treatment group, there was a statistically significant decrease of the stria area in relation to AV1. In the control group, there was no difference between AV4 and the other evaluations. In the comparison between the two groups, there was no difference in the first three evaluations. However in AV4 the treatment group showed a smaller area of the striae in relation to the control group. In the qualitative analysis the treated group had lower visibility and less depth of the striae to the touch.CONCLUSIONS: Therapy with 12 sessions of low-level laser for four weeks had a positive effect on the treatment of striae alba, with results becoming evident only four weeks after the last application. The 660 nm laser showed to be a non-invasive, painless and fast-applied method.

Effects of low-level laser therapy on cartilage repair in an experimental model of osteoarthritis

2014 ◽  
Vol 3 (3) ◽  
Author(s):  
Anderson Amaro dos Santos ◽  
Poliani Oliveira ◽  
Kelly Rossetti Fernandes ◽  
Lara Rhon ◽  
Carla Roberta Tim ◽  
...  
Keyword(s):  
Laser Therapy ◽  
Cruciate Ligament ◽  
Treated Group ◽  
Male Rats ◽  
Low Level Laser Therapy ◽  
Control Group ◽  
Low Level ◽  
Low Level Laser ◽  
Post Surgery ◽  
Level Laser

AbstractObjective:The aim of this study was to evaluate the effects of low level laser therapy (LLLT) on the degenerative process in the articular cartilage after an anterior cruciate ligament transection (ACLT) model in rats.Methods:Eighty male rats (Wistar) were divided into four groups: 1.) intact control group (CG), 2.) injured control group (ICG), 3.) injured laser-treated group at 10 J/cmResults:Initial signs of tissue degradation could be observed 5 weeks post-ACLT, evidenced by the decrease of proteoglycan concentration and increase in cartilage thickness of the ICG. After 8 weeks post-surgery, analysis showed a progression of the degenerative processes in the ICG revealed by the increased cellularity and higher TNF-α, IL1-β and MMP-13 immunoexpression. LLLT was able to modulate some of the aspects relating to the degradative process, such as biomodulation of the number of chondrocyte proliferation, prevention of proteoglycan loss, and decrease of MMP-13 immunoexpression.Conclusion:This study showed that the 685-nm laser irradiation, especially at 10 J/cm

Assessment of healing of dental implant surgical site following Low-Level Laser Therapy using Bio-Clinical parameters: An Exploratory Study

2020 ◽  
Author(s):  
VARSHA PALLED ◽  
DR. JITENDRA RAO ◽  
DR. RAGHUWAR DAYAL SINGH ◽  
DR. SHUCHI TRIPATHI ◽  
DR. KALPANA SINGH ◽  
...  
Keyword(s):  
Laser Therapy ◽  
Test Group ◽  
Low Level Laser Therapy ◽  
Control Group ◽  
Clinical Parameters ◽  
Implant Stability ◽  
Low Level ◽  
Implant Stability Quotient ◽  
Low Level Laser ◽  
Level Laser

The purpose of this study was to evaluate whether Low-Level Laser Therapy (LLLT) improves the healing of the implant surgical site with clinical and biochemical parameters.Thirty patients with an edentulous space spanning a single tooth were selected. The patients were randomly allocated to two groups - the control group and the test group. The test group received laser energy at a power of 2J/cm 2 with a total of 4-6J energy over each implant. Clinical parameters (Implant Stability Quotient, probing index, modified sulcus bleeding index)and osteoprotegerin (OPG) were assessed at baseline and follow-up intervals (2 weeks, 6 weeks, and 3 months).The test group showed significantly higher implant stability quotient compared to thecontrol group at 2 weeks(57.93±3.95 and 35.67±3.08; p<0.01) and 3months(58.86±3.75 and 67.06±3.78; p<0.01). A significant rise in OPG levels of the test group(686.30±125.36pg/ml at baseline and 784.25±108.30pg/ml at 3months;p<0.01) was seen contrary to significant decline in the control group (839.50±249.08pg/ml at baseline,415.30±78.39pg/ml at 3months;p<0.01). Within the limitations of the study, the study suggests that the healing of peri-implant hard and soft tissues may be enhanced with the use of LLLT as an explicit modality during the post-operative period.

Follow-up of pressure ulcer treatment with photodynamic therapy, low level laser therapy and cellulose membrane

2021 ◽  
Vol 30 (4) ◽  
pp. 304-310
Author(s):  
Luciano Pereira Rosa ◽  
Francine Cristina da Silva ◽  
Suzete Carvalho Landulfo Luz ◽  
Regiane Lima Vieira ◽  
Beatriz Rocha Tanajura ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Laser Therapy ◽  
Pressure Ulcer ◽  
Low Level Laser Therapy ◽  
Cellulose Membrane ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Hospitalised Patients

Objective: A pressure ulcer (PU) is an area of tissue trauma caused by continuous and prolonged pressure, often associated with hospitalised patients immobilised due to neurological problems, negatively affecting their quality of life, and burdening the public budget. The aim of this study was to report the follow-up, for 45 weeks, of three patients with neurological lesions due to trauma who subsequently developed PUs, and who were treated with a combination of photodynamic therapy (PDT), low level laser therapy (LLLT) and cellulose membrane (CM). Method: PDT was mediated by the photosensitiser curcumin on a 1.5% emulsion base. Blue LED light at 450 nm was delivered continuously for 12 minutes at an irradiance of 30mW/cm2 and total energy delivered to the tissue was 22J/cm2. LLLT was performed with 660 nm laser, punctuated and continuous, twice a week with parameters: spot size 0.04cm2, power of 40mW, 10 seconds per point, fluence of 10J/cm2 and irradiance of 1000mW/cm2. Results: All PUs had a significant reduction (range: 95.2–100%) of their area after 45 weeks of follow-up and two PUs had complete healing at 20 weeks and 30 weeks. All of the PUs showed a reduction in contamination with the PDT treatments in different proportions. Conclusion: From the results obtained, we conclude that the combination of PDT, LLLT and CM is a promising treatment for PU healing.

scholarly journals Effect of low-level laser (Ga-Al-As 655 nm) on skeletal muscle fatigue induced by electrical stimulation in rats

2006 ◽  
Vol 101 (1) ◽  
pp. 283-288 ◽  
Author(s):  
Rodrigo Álvaro B. Lopes-Martins ◽  
Rodrigo Labat Marcos ◽  
Patrícia Sardinha Leonardo ◽  
Antônio Carlos Prianti ◽  
Marcelo Nicolas Muscará ◽  
...  
Keyword(s):  
Creatine Kinase ◽  
Electrical Stimulation ◽  
Muscle Contractions ◽  
Muscular Fatigue ◽  
Low Level Laser Therapy ◽  
Control Group ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Significant Difference

We investigated whether low-level laser therapy (LLLT) can reduce muscular fatigue during tetanic contractions in rats. Thirty-two male Wistar rats were divided into four groups receiving either one of three different LLLT doses (0.5, 1.0, and 2.5 J/cm2) or a no-treatment control group. Electrical stimulation was used to induce six tetanic muscle contractions in the tibial anterior muscle. Contractions were stopped when the muscle force fell to 50% of the initial value for each contraction (T50%). There was no significant difference between the 2.5 J/cm2 laser-irradiated group and the control group in mean T50% values. Laser-irradiated groups (0.5 and 1.0 J/cm2) had significantly longer T50% values than the control group. The relative peak force for the sixth contraction in the laser-irradiated groups were significantly higher at 92.2% (SD 12.6) for 0.5 J/cm2, 83.2% (SD 20.5) for 1.0 J/cm2, and 82.9% (SD 18.3) for 2.5 J/cm2 than for the control group [50% (SD 15)]. Laser groups receiving 0.5 and 1.0 J/cm2 showed significant increases in mean performed work compared with both the control group and their first contraction values. Muscle damage was indirectly measured by creatine kinase levels in plasma. A distinct dose-response pattern was found in which 1.0 and 2.5 J/cm2 LLLT groups had significantly lower creatine kinase levels than the 0.5 J/cm2 LLLT group and the control group. We conclude that LLLT doses of 0.5 and 1.0 J/cm2 can prevent development of muscular fatigue in rats during repeated tetanic contractions.

ASSESSMENT ON RESULTS OF SURGICAL EXTRACTION OF  IMPACTED LOWER THIRD MOLARS WITH POSTOPERATIVE LOW - LEVEL LASER THERAPY

2018 ◽  
Vol 8 (6) ◽  
pp. 130-137
Author(s):  
Huong Nguyen Thi Mai ◽  
Tai Tran Tan ◽  
Khanh Hong Quoc
Keyword(s):  
Laser Therapy ◽  
Third Molar ◽  
Low Level Laser Therapy ◽  
Control Group ◽  
Low Level ◽  
Impacted Third Molar ◽  
Low Level Laser ◽  
Level Laser ◽  
Surgical Extraction ◽  
Wisdom Teeth

Background: The most frequently performed surgical procedure in dentistry is impacted third molar extraction with difficulty varies according to the location of the tooth. Laser therapy after surgery can accelerate cell and tissue reconstruction along with relieve post-operative pain. The objective of this study was to investigate the clinical and radiographic characteristics of impacted lower third molar and to evaluate the results of surgical extraction of impacted lower third molar with post-surgical low-level laser therapy (LLLT). Subjects and Methods: Clinical and radiographic data from 90 patients (average age 28.13 ± 5.38) subjected to a surgical extraction of lower third molar were pooled and divided randomly into 3 groups: group 1 received LLLT immediately after surgery intraorally, group 2 treated with LLLT immediately after the extraction extraorally. Patients received routine management with nonactivated laser were inserted in the control group. Assessments of pain, swelling and trismus level were carried out at 24, 48 hours and on the 7th day after surgery. Results: Correlation of wisdom teeth to ramus and adjacent teeth mainly type II (88.9%), type III accounted for 11.1%. Relative depth of wisdom teeth in the bone mainly position B (81.1%), position C (18.9%). Correlation of wisdom teeth axis to adjacent teeth: horizontal (58.9%), mesioangular impactions (40%) and distoangular impaction (1.1%). There were statistically significant decreases in the level of pain, edema and interincisal opening between the laser-treated groups and the control group on the 1st and 2nd postoperative day. Conclusions: Intraoral and extraoral post-surgical low-level laser therapy treatment was useful in reducing swelling, pain and trismus compared to placebo group in impacted third molar surgery. Key words: Impacted lower third molar, low- level laser therapy

Efficacy of Nonsurgical Mechanical Debridement With and Without Adjunct Low-Level Laser Therapy in the Treatment of Peri-Implantitis: A Randomized Controlled Trial

2020 ◽  
Vol 46 (5) ◽  
pp. 526-531 ◽  
Author(s):  
Fawaz Alqahtani ◽  
Nasser Alqhtani ◽  
Sree Lalita Celur ◽  
Darshan Devang Divakar ◽  
Abdulaziz A. Al-Kheraif ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Laser Therapy ◽  
Low Level Laser Therapy ◽  
Periodontal Pocket ◽  
Low Level ◽  
Low Level Laser ◽  
Probing Depth ◽  
Level Laser ◽  
Significant Difference

We hypothesized that in the long term (6-month follow-up), nonsurgical mechanical debridement (NSMD) with adjunct low-level laser therapy (LLLT) is more effective for the treatment of peri-implantitis than NSMD alone. The aim of the present 6-month follow-up convenience-sample cohort study was to assess the efficacy of LLLT as an adjunct to NSMD in the treatment of peri-implantitis. A questionnaire was used to collect demographic information. Patients with peri-implantitis in the test and control groups underwent NSMD with and without adjunct LLLT, respectively. Randomization was done by tossing a coin. In the test group, the laser was applied perpendicular to the periodontal pocket for 20 seconds at a constant distance of 15 mm and with a continuous wavelength (3.41 J/cm2 delivery with a 1.76 cm2 spot and average output of 0.3 W). In both groups, peri-implant probing depth, bleeding upon probing, and crestal bone resorption were assessed at baseline and at the 3-month and 6-month follow-up. Group comparisons were performed, and P < .05 was considered statistically significant. Sixty-seven individuals with peri-implantitis were included. The mean age of participants who underwent NSMD with adjunct LLLT and NSMD alone was 46.5 ± 3.4 and 45.3 ± 1.1 years, respectively. At the 3- and 6-month follow-up, peri-implant (P < .05), bleeding upon probing (P < .05), and probing depth (P < .05) were significantly higher among patients who underwent NSMD alone compared with patients who underwent NSMD with adjunct LLLT. There was no significant difference in crestal bone resorption in all patients up to the 6-month follow-up. In the short term, NSMD with adjunct LLLT was a useful treatment protocol for the treatment of peri-implant soft-tissue inflammation.

The effect of low level laser therapy (LLLT) on bone remodelling after median diastema closure: A one year and half follow-up study

2009 ◽  
Vol 68 (3) ◽  
pp. 116-122 ◽  
Author(s):  
Sherif Essam Zahra ◽  
Abbadi Adel Elkasi ◽  
Mouchira Salah Eldin ◽  
Vaska Vandevska-Radunovic
Keyword(s):  
Laser Therapy ◽  
Bone Remodelling ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Follow Up Study ◽  
Low Level Laser ◽  
Level Laser ◽  
One Year
Sign in / Sign up

Export Citation Format

Share Document