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1.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1357581

ABSTRACT

Objetivo: Determinar el efecto fotodinámico de azul de metileno (MB) y azul de toluidina (TBO) activadas con láser terapéutico sobre biofilms de Streptococcus mutans y Candida albicans. Material y métodos: Se analizaron 61 muestras de biopelículas, en medios de cultivo cerebro corazón (BHI) por 6 días, las muestras se dividieron en 4 grupos y se sumergieron en: grupo experimental en MB al 0,01% y TBO al 0,05%, grupo control positivo en gluconato de clorhexidina (CHX) al 0,12% y grupo control negativo en cloruro de sodio (NaCl) al 0,9%. Las muestras de MB y TBO fueron irradiadas con láser terapéutico con una longitud de onda de 660 nm, y 9 J/cm2 de potencia, cada bloque de esmalte estuvo en cultivo post irradiación. las muestras pasaron a cultivo, para la cepa S. mutans y C. albicans por separado, El método empleado fue el de diluciones seriadas para la cuantificación de UFC luego de 5 días de cultivo. Para el análisis se usó T de student y Anova de un factor. Resultados: encontrando diferencias estadísticas entre los cuatro grupos de experimentación en el crecimiento microbiano (ANOVA p<0,05), al análisis con el grupo control positivo, no hubo diferencias significativas entre MB frente al S. mutans y C. albicans, en contraste con el TBO que mostro diferencias significativas (p<0,05). Conclusión: el MB y TBO muestran en laboratorio, una disminución en el crecimiento de las cepas del biofilm, el TBO mostró mejor efecto a la reducción de crecimiento del S. mutans y C. albicans.


Objetive: To determine the photodynamic effect of methylene blue (MB) and toluidine blue (TBO) activated with therapeutic laser on Streptococcus mutans and Candida albicans biofilms. Material and methods: Sixty-one biofilm samples were analyzed in brain heart culture media (BHI) for 6 days, the samples were divided into 4 groups and immersed in: experimental group in 0.01% MB and 0.05% TBO, positive control group in 0.12% chlorhexidine gluconate (CHX) and negative control group in 0.9% sodium chloride (NaCl). The MB and TBO samples were irradiated with 2 therapeutic laser with a wavelength of 660 nm, and 9 J/cmof power, each enamel block was in post-irradiation culture. The samples were cultured separately for the S. mutansand C. albicans strains, the method used was that of serial dilutions for the quantification of CFU after 5 days of culture. For the analysis, Student's Tand Anova of one factor were used. Results: finding statistical differences between the four experimental groups in microbial growth (ANOVAp<0.05), in the analysis with the positive control group, there were no significant differences between MB versus S. mutansand C. albicans, in contrast to the TBO that showed significant differences (p<0.05). Conclusion: MB and TBO show in laboratory, a decrease in the growth of biofilm strains, TBO showed better effect in reducing the growth of S. mutansand C. albicans.

2.
Int. j. med. surg. sci. (Print) ; 7(4): 1-2, dic. 2020. ilus
Article in English | LILACS | ID: biblio-1151784

ABSTRACT

mILIB (Intravascular Laser Irradiation in the Modified Bloodstream) presents itself as one more photobiomodulation technique, among the many therapeutic possibilities we know. The advantage in this case is the possibility of making application in a systemic way in which the organism as a whole is benefited. The use of the red therapeutic laser in a transcutaneous way, has been a great option as an added therapeutic value to the treatment of several pathologies, providing systemic stimuli, similar to hemotherapy. Thus, mILIB presents itself as an effective and increasingly widespread technique for professionals working with photobiomodulation


mILIB (Irradiación láser intravascular en el torrente sanguíneo modificado) se presenta como una técnica de fotobiomodulación más, entre las muchas posibilidades terapéuticas que conocemos. La ventaja en este caso es la posibilidad de realizar una aplicación de forma sistémica en la que se beneficia al organismo en su conjunto.El uso del láser terapéutico rojo de forma transcutánea, ha sido una gran opción como valor terapéutico añadido al tratamiento. de varias patologías, proporcionando estímulos sistémicos, similar a la hemoterapia. Así, mILIB se presenta como una técnica eficaz y cada vez más extendida para los profesionales que trabajan con fotobiomodulación.


Subject(s)
Humans , Vascular Diseases/radiotherapy , Laser Therapy
3.
Odovtos (En línea) ; 20(3): 51-59, Sep.-Dec. 2018. graf
Article in Spanish | LILACS, BBO | ID: biblio-1091459

ABSTRACT

RESUMEN El término "LÁSER" es un acrónimo de "Light Amplification by the Stimulated Emission of Radiation" (en español "Amplificación de Luz por Emisión Estimulada de Radiación"). La utilización de la tecnología láser en Odontología ha tenido una constante evolución y desarrollo en los últimos 30 años. Se deben distinguir dos grandes grupos de láseres: De alta potencia o quirúrgicos y de baja potencia o terapéuticos. El más empleado en odontología pediátrica es el terapéutico o LLLT (o "blando"). El láser terapéutico está indicado para diversas anomalías tales como la hipersensibilidad, gingivitis, herpes, parestesias, neuralgias del trigémino, trismus, disfunción ATM, implantes, activación de químicos de blanqueamiento dental, entre otros. Este artículo pretende realizar una actualización de las aplicaciones del láser de baja potencia en el ámbito de la Odontología Pediátrica, así como la presentación de 4 casos clínicos representativos.


ABSTRACT The term "LASER" is an acronym for "Light Amplification by the Stimulated Emission of Radiation" (in Spanish "Amplificación de Luz por Emisión Estimulada de Radiación"). The use of laser technology in dentistry has had a constant evolution and development in the last 30 years. Two large groups of lasers should be distinguished: high-power or surgical and low-power or therapeutic. The most used in pediatric dentistry is the therapeutic or LLLT (or "soft"). The therapeutic laser is indicated for various anomalies such as hypersensitivity, gingivitis, herpes, paresthesias, trigeminal neuralgias, trismus, TMJ dysfunction, implants, activation of teeth whitening chemicals, among others. This article intends to perform an update of the applications of low power laser in the field of Pediatric Dentistry, as well as the presentation of 4 representative clinical cases.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Pediatric Dentistry/methods , Low-Level Light Therapy , Lasers , Tooth Abnormalities/radiotherapy
4.
Rev. estomatol. Hered ; 27(2): 101-110, abr. 2017. ilus, tab
Article in Spanish | LILACS | ID: biblio-991177

ABSTRACT

Objetivos: Determinar el efecto del láser terapéutico infarrojo en la reparación ósea post exodoncia en ratas Albinas. Material y métodos: Treinta ratas Albinas Holtzman fueron divididos al azar en tres grupos (A, B y C) de 10 ratas cada uno de acuerdo al día de sacrificio y subdivididos en dos grupos teniendo 5 ratas cada uno (A1, A2, B1, B2, C1, C2). A los alvéolos de los incisivos superiores extraídos de las ratas de los grupos A1, B1 y C1 no se les aplicó el láser terapéutico infrarrojo siendo el control y a los alvéolos de las ratas de los grupos A2, B2 y C2 se les aplicó el láser terapéutico infrarrojo AsGaAl de forma puntual y continua. Las muestras se analizaron utilizando un Microscopio Óptico mediante conteo celular y estructuras nuevas del alvéolo. Resultados: A los 3 días se encontró una cantidad mayor de neutrófilos, linfocitos, macrófagos, fibroblastos y neovasos en los grupos láser pero sólo fue estadísticamente significativo en macrófagos (p = 0,026). A los 7 días se encontró un cantidad mayor de fibroblastos y neovasos en los grupos láser siendo estadísticamente significativos (p = 0,01 y p = 0,008 respectivamente). A los 14 días se encontraron osteoblastos pero en mayor cantidad en los grupos láser, siendo estadísticamente significativo (p = 0,008). Conclusiones: El láser terapéutico infrarrojo presentó efecto positivo en la reparación ósea post exodoncia modulando la respuesta celular y bioestimulando la formación de nuevas células y estructuras involucradas en las etapas de cicatrización del alvéolo.


Objectives: Determine the effect of infrared laser therapy on the bone repair post-extraction in albino rats. Material and methods: Thirty rats Albinas Holtzman were randomly divided into three groups (A, B and C) of 10 rats each according to the day of sacrifice and divided into two groups having 5 rats each (A1, A2, B1, B2, C1, C2). Incisor extracted alveolus from A1, B1 and C1 control groups were not applied infrared laser therapy and A2, B2 and C2 groups was applied infrared laser therapy AsGaAl on time and continuous. Samples were analyzed using an optical microscope by counting cell structures of alveoli. Results: After 3 days a greater number of neutrophils, lymphocytes, macrophages, fibroblasts and new blood vessels in irradiated groups was found but was only statistically significant in macrophages (p = 0.026). After 7 days an increased number of neutrophils, lymphocytes and macrophages in the control groups was found but it was statistically significant only in neutrophils and macrophages (p = 0.019 and p = 0.01 respectively). After 14 days osteoblasts were found in greater amount in the irradiated laser group being statistically significant (p=0.008; p <0.05). Conclusions: The infrared laser is effective to repair alveoli post-extracted teeth bone and to stimulate formation of cells and structures involved in healing dental alveolus.

5.
Article in Spanish | LILACS | ID: lil-627547

ABSTRACT

Objetivo: Determinar si el láser de baja frecuencia (LLLT) es efectivo en disminuir la percepción del dolor posterior a la aplicación de separaciones molares para ortodoncia. Material y Método: Se realizó un ensayo clínico aleatorizado con enmascaramiento simple en 30 alumnos entre 16 y 20 años, a quienes se les aplicó separaciones elásticas entre los molares permanentes. Los voluntarios fueron designados en dos grupos: 15 pacientes en el grupo experimental quienes fueron tratados con LLLT (Photon Lase, DMC USA Corp.) por 30 segundos en cada molar permanente derecho y 15 pacientes en el grupo control quienes recibieron como placebo la colocación del láser inactivo con el mismo protocolo empleado en el grupo experimental. En total 30 dientes fueron incluidos en cada grupo. La percepción del dolor fue evaluada a las 3, 12, 24 horas y a los días 2, 3, 4, 5 y 7 posterior a la aplicación de LLLT a través de un cuestionario estándar de autollenado haciendo uso de la escala visual análoga del dolor (EVA). Resultados: El 61.6 por ciento de los pacientes del grupo de control presentó algún grado de dolor durante el periodo de seguimiento en comparación del 38.64 por ciento del grupo experimental (p=0.004). Si bien la intensidad del dolor alcanzó su punto máximo a las 12 horas las diferencias de los promedios entre ambos grupos también fue estadísticamente significativa (<0.001). Conclusión: El LLLT demostró ser una herramienta útil en el control del dolor posterior a la aplicación de separaciones molares.


Objective: To determine the effectiveness of low-level laser therapy (LLLT) to decrease the perception of pain after application of orthodontic molar separations. Material and Methods: We performed a randomized single-blind in 30 students between 16 and 20 years who were administered elastic separation between the permanent molars. Volunteers were assigned into two groups: 15 patients in the experimental group who were treated with LLLT (Photon Lase, DMC USA Corp.) for 30 seconds on each permanent right molar and 15 patients in the control group who received placebo-like placement inactive laser with the same protocol used in the experimental group. Altogether 30 teeth were included in each group. Pain perception was assessed at 3, 12, 24 hours and 2, 3, 4, 5 and 7 after application of LLLT through a standard questionnaire using the visual analogue scale of pain (EVA). Results: 61.6 percent of patients in the control group had some degree of pain during the follow-up period in comparison with the 38.64 percent of the experimental group (p =0.004). Although pain intensity peaked at 12 hours the mean differences between groups was statistically significant (<0.001). Conclusion: LLLT proved to be a useful tool in controlling pain after the application of separation molars.


Subject(s)
Young Adult , Orthodontic Appliances/adverse effects , Pain/radiotherapy , Low-Level Light Therapy , Pain/etiology , Follow-Up Studies , Orthodontics/methods , Pain Measurement , Pain Perception
6.
Fisioter. mov ; 23(2): 271-281, abr.-jun. 2010.
Article in Portuguese | LILACS | ID: lil-566079

ABSTRACT

OBJETIVO: Fazer uma revisão bibliográfica a respeito dos efeitos dos principais recursos eletrofísicos utilizados na aceleração do metabolismo ósseo e no tratamento da osteoporose. ANTECEDENTES: A Organização Mundial da Saúde (OMS) define a osteoporose como doença esquelética sistêmica caracterizada por diminuição da massa óssea e deterioração microarquitetural do tecido ósseo, com consequente aumento da fragilidade óssea e susceptibilidade à fratura. Vários tratamentos medicamentosos e não medicamentosos vêm sendo desenvolvidos na tentativa de aumentar a massa óssea e prevenir a osteoporose. Dentro desse contexto, os recursos eletrofísicos vêm tendo um papel de destaque, como recursos que apresentam um potencial osteogênico, capazes de estimular a proliferação de osteoblastos e biomodular o metabolismo ósseo. ESTRATÉGIA DE PESQUISA: Foram consultadas as bases de dados: The Cochrane Library, MEDLINE, Embase, LILACS, SciELO, referências dos artigos identificados, e contato com especialisas em laser, entre os anos de 1983 e 2009. CRITÉRIOS DE SELEÇÃO: Foram incluídos estudos experimentais e ensaios clínicos randomizados que avaliaram os efeitos dos recursos eletrofísicos na osteoporose. RECOMPILAÇÃO E ANÁLISE DE DADOS: Dois revisores selecionaram independentemente os estudos, avaliaram sua qualidade metodológica dos estudos e coletaram os dados. RESULTADOS: Todos os recursos eletrofísicos citados neste artigo se mostraram eficazes na estimulação do metabolismo ósseo. No entanto, a grande maioria dos estudos realizados evidenciam esses efeitos através de estudos in vitro e estudos experimentais com cobaias. Cabe ressaltar que trabalhos como esses são raros em seres humanos. Baseado nos achados desta revisão pode ser sugerido que os recursos eletrofísicios como o laser terapêutico, o ultrassom, campos eletromagnéticos e plataformas vibratórias são recursos que tem um potencial osteogênico entretanto mais estudos são necessários para definir os efeitos dos mesmos em humanos, bem como, protocolos mais eficazes de tratamento. CONCLUSÃO: A partir deste levantamento bibliográfico, fica evidente que os recursos eletrofísicos apresentam um grande potencial osteogênico, porém, a maior parte dos estudos é in vitro. São necessários mais estudos in vivo, definindo, assim, melhores parâmetros e doses, para que sejam utilizados no tratamento da osteoporose.


OBJECTIVE: The aim of this article was to provide a literature review regarding the impact of the main eletrophysical resources used on the acceleration of bone metabolism and on the osteoporosis treatment. DEFINITION: The OMS defines osteoporosis as a Sistemic esqueletical disease characterized for diminished bone mass and for deterioration of the bone mass microarchitecture, increasing the bone fragility and susceptibility to fracture. Many drug or non-drug treatments are being developed as an attempt to increase the bone mass, and prevent osteoporosis. Within this context, the eletrophysical resources is having a prominence paper, as a resource which presents a osteogenic potencial, capable of stimulating the proliferation of osteoblasts and biomodulate the bone metabolism. RESEARCH STRATEGIES: The data base consulted were: The Cochrane Library, MEDLINE, Embase, LILACS, SciELO, references of indentified articles and contact with laser's especialists, between 1983 and 2009. SELECTION CRITERIA: Were included experimental study and randomized clinical tests on the effects of eletrophysical resources on osteoporosis. RECOMPILATION AND DATA ANALISIS: Two reviewers independently selected the studies, assessed their methodological quality and collected the data. RESULTS: All the eletrophysical resources quoted on this article were effective in stimulation of bone metabolism. However, most of the studies show these effects through in vitro studies and experimental studies with animals. It is important to say that experiments like these are rare in human beings. Based on the findings of this review, it may be suggested that the eletrophysical resources like lasertherapy, ultra-sound, electromagnetic fields and vibration are resources that has osteogenic potencial, but more studies are needed to define the effects of it in humans, as well as more effective treatment protocols. CONCLUSION: With this literature review it is clear that eletrophysical resources have high osteogenic potential, but most of the studies are in vitro. It is needed more studies in vivo, defining therefore, better parameters and doses to be used in the treatment of osteoporosis.

7.
Int. j. odontostomatol. (Print) ; 4(1): 43-46, abr. 2010.
Article in Spanish | LILACS | ID: lil-596802

ABSTRACT

Se realizó una revisión de los últimos años de la literatura para analizar la información existente respecto al uso de láser terapéutico en el control del dolor durante el tratamiento de ortodoncia. Se encontró que el láser terapéutico puede ser efectivo como coayudante en el control del dolor sin embargo las diferencias no son significativas.


There is realized a review of last years of the literature to analyze the existing information with regard to the use of therapeutic laser in the control of the pain during the treatment of orthodontics.


Subject(s)
Humans , Pain/prevention & control , Laser Therapy , Orthodontics, Corrective/adverse effects
8.
Rev. Soc. Bras. Med. Trop ; 42(1): 82-85, Jan.-Feb. 2009. graf
Article in Portuguese | LILACS | ID: lil-507372

ABSTRACT

O uso do laser de baixa intensidade na supressão de infecções pelos vírus Herpes simplex 1 e 2 foi avaliado após uma a cinco aplicações, sendo observada uma redução gradual na replicação dos vírus Herpes simplex 1 e 2 com 68,4 por cento e 57,3 por cento de inibição, respectivamente, após 5 aplicações, indicando o seu uso clínico.


The use of low-level laser to suppress infections caused by Herpes simplex viruses 1 and 2 was evaluated after one to five applications. A gradual reduction in replication of Herpes simplex viruses 1 and 2 was observed, with 68.4 percent and 57.3 percent inhibition, respectively, after five applications, thus favoring its clinical use.


Subject(s)
Animals , Humans , Herpesvirus 1, Human/radiation effects , /radiation effects , Low-Level Light Therapy , Chlorocebus aethiops , Herpes Simplex/radiotherapy , Vero Cells , Virus Replication/radiation effects
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