Bactericidal effects of 310 nm ultraviolet light-emitting diode irradiation on oral bacteria

Takada, Ayuko; Matsushita, Kazunobu; Horioka, Satoru; Furuichi, Yasushi; Sumi, Yasunori

doi:10.1186/s12903-017-0382-5

Cited by 45 publications

(36 citation statements)

References 43 publications

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“…Similar results are obtained for the microbial samples exposed to UV light. It was demonstrated that the 200–280 nm range of UV radiation, called UVC, has germicidal properties [ 67 ]. UVC light inactivates microorganisms by damaging their DNA due to the dimerization of thymine bases [ 68 ].…”

Section: Resultsmentioning

confidence: 99%

Sources of variability in SERS spectra of bacteria: comprehensive analysis of interactions between selected bacteria and plasmonic nanostructures

et al. 2019

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The surface-enhanced Raman spectroscopy (SERS)-based analysis of bacteria suffers from the lack of a standard SERS detection protocol (type of substrates, excitation frequencies, and sampling methodologies) that could be employed throughout laboratories to produce repeatable and valuable spectral information. In this work, we have examined several factors influencing the spectrum and signal enhancement during SERS studies conducted on both Gram-negative and Gram-positive bacterial species: Escherichia coli and Bacillus subtilis , respectively. These factors can be grouped into those which are related to the structure and types of plasmonic systems used during SERS measurements and those that are associated with the culturing conditions, types of culture media, and method of biological sample preparation. Electronic supplementary material The online version of this article (10.1007/s00216-019-01609-4) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Sources of variability in SERS spectra of bacteria: comprehensive analysis of interactions between selected bacteria and plasmonic nanostructures

et al. 2019

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“…A large body of research has been conducted on the effect of full-spectrum (sunlight) light [141,150,151], ultraviolet light [147,[152][153][154][155][156], and blue or red wavelengths [157][158][159][160], on mono-cultured bacterial or fungal survival and activity ( Fig. 1).…”

Section: Lightingmentioning

confidence: 99%

Building upon current knowledge and techniques of indoor microbiology to construct the next era of theory into microorganisms, health, and the built environment

Horve

Lloyd

Mhuireach

et al. 2019

J Expo Sci Environ Epidemiol

114

103

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In the constructed habitat in which we spend up to 90% of our time, architectural design influences occupants' behavioral patterns, interactions with objects, surfaces, rituals, the outside environment, and each other. Within this built environment, human behavior and building design contribute to the accrual and dispersal of microorganisms; it is a collection of fomites that transfer microorganisms; reservoirs that collect biomass; structures that induce human or air movement patterns; and space types that encourage proximity or isolation between humans whose personal microbial clouds disperse cells into buildings. There have been recent calls to incorporate building microbiology into occupant health and exposure research and standards, yet the built environment is largely viewed as a repository for microorganisms which are to be eliminated, instead of a habitat which is inexorably linked to the microbial influences of building inhabitants. Health sectors have re-evaluated the role of microorganisms in health, incorporating microorganisms into prevention and treatment protocols, yet no paradigm shift has occurred with respect to microbiology of the built environment, despite calls to do so. Technological and logistical constraints often preclude our ability to link health outcomes to indoor microbiology, yet sufficient study exists to inform the theory and implementation of the next era of research and intervention in the built environment. This review presents built environment characteristics in relation to human health and disease, explores some of the current experimental strategies and interventions which explore health in the built environment, and discusses an emerging model for fostering indoor microbiology rather than fearing it.

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“…Another study showed that LED light enhances the cell and immune response to some of the bacteria specimens involved in the developing of the periodontal disease [ 19 ]. It is well known that the stable and appropriate coagulation is a first and a very important step in the process of wound healing.…”

Section: Discussionmentioning

confidence: 99%

Haemostasis in Oral Surgery with Blue-Violet Light

Veleska-Stevkoska¹,

Koneski²

2018

Open Access Maced J Med Sci

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BACKGROUND:The invasive dental procedures usually result in wounds accompanied by physiological bleeding. Even though the bleeding is easily manageable, it is still one of the major concerns of the patients and a reason for their subjective discomfort. Recently, a novel approach with light-emitting diode (LED) was introduced to control the bleeding. This study aims to examine the effectiveness of the irradiation with blue-violet light LEDs on the haemostasis.MATERIAL AND METHODS:The study included 40 patients with an indication for tooth extraction, divided into two groups: examination group (n = 30) and a control group (n = 10). The site of the extraction socket in the examination group was irradiated with LED (410 nm) until the bleeding stopped. The patients from the control group were treated by conventional gauze pressure to stop the bleeding (control group). The duration of irradiation and gauze pressure was measured and compared. The statistical analysis was performed with Student T-test.RESULTS:The examination group showed the shorter duration of bleeding compared to the control group for 13.67 seconds and 156 seconds, respectively. The most of the cases in the examination group were irradiated in 10 seconds (70%), followed by irradiation of 20 seconds (23.3%) and 30 seconds (6.6%). In the control group, the average time to stop the bleeding by the conventional method was 156 second.CONCLUSION:The blue-violet LED light shortens the bleeding time from the extraction socket after tooth extraction and may be a promising method for achieving haemostasis.

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Bactericidal effects of 310 nm ultraviolet light-emitting diode irradiation on oral bacteria

Cited by 45 publications

References 43 publications

Sources of variability in SERS spectra of bacteria: comprehensive analysis of interactions between selected bacteria and plasmonic nanostructures

Sources of variability in SERS spectra of bacteria: comprehensive analysis of interactions between selected bacteria and plasmonic nanostructures

Building upon current knowledge and techniques of indoor microbiology to construct the next era of theory into microorganisms, health, and the built environment

Haemostasis in Oral Surgery with Blue-Violet Light

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