Journal of Lasers, Optics & Photonics

This pilot study evaluated in vitro whether photodynamic therapy and the application of methylene blue are effective methods for eliminating microorganisms collected in periodontal pockets deeper than 5mm and cultivated in a petri dish. The study design consisted in the division of control group (G1) and two test groups (G2 and G3). Material resulting from subgingival scraping was collected in a region were periodontal pocket range from 5 to 7 mm in 1 patient, and this material was used to make a smear in a previously prepared culture medium, using a flamed bacteriological loop, inside a laminar flow hood. The growth of the cultures was monitored in a 36? incubator during 72 hours and after that period, tests of application of methylene blue 0.005% were performed in G2 and methylene blue 0.005% associated with photodynamic therapy in G3. 48 hours after this intervention, the cell colonies were removed from the culture medium using a bacteriological loop and applied to a glass plate, to perform the Gram staining method. The results indicated that there was no visible reduction in the size of cell cultures in G2 in relation to the control (G1), but there was a visible reduction in G3 in relation to the other groups. Microscopic analysis of gram staining indicated a significant reduction in the count of gram positive and negative bacteria in G3, but the same did not occur in G2 compared to G1. This pilot study demonstrated that photodynamic therapy is effective in inactivating microorganisms cultivated in vitro and that methylene blue at 0.005% concentration do not have enough antimicrobial effect to represent visible change in electron microscopy at 10X magnification.

Laser optics, the science and technology of manipulating laser light, has been a driving force behind numerous technological advancements in various industries. As researchers, engineers, and scientists continue to explore the potential of laser optics, new frontiers are being unlocked, leading to exciting emerging trends in research. This article takes a glimpse into the future of laser optics, exploring the latest trends and potential breakthroughs that could shape our world in the coming years. Quantum optics, the study of the interaction between light and matter at the quantum level, is at the forefront of laser optics research. Researchers are exploring how quantum effects can be harnessed to achieve new capabilities in communication, sensing, and computing. Quantum photonics, which involves manipulating photons in quantum systems, is a promising avenue for developing quantum technologies, including quantum communication networks and quantum computing. In the future, quantum-enhanced sensors, such as quantum gravimeters and quantum magnetometers, could revolutionize fields like geophysics and materials science. Quantum communication systems July become more widespread, enabling secure and unhackable communication networks based on quantum key distribution. Quantum computing, with the potential to solve complex problems exponentially faster than classical computers, holds the promise of revolutionizing fields such as cryptography, drug discovery, and optimization.

Laser optics is a field of science and technology that focuses on the manipulation, control, and utilization of laser light. Lasers are powerful sources of coherent light with unique properties that make them essential in a wide range of applications, from communications and manufacturing to medicine and scientific research. Over the years, significant advancements in laser optics have led to ground breaking developments, pushing the boundaries of light manipulation and unlocking new possibilities in various industries. This article explores the recent advancements in laser optics and their impact on modern technology, research, and innovation. One of the most notable advancements in laser optics is the development of high-power laser systems. Scientists and engineers have made significant strides in increasing the output power of lasers, enabling them to deliver intense beams of light. High-power lasers have numerous applications, such as cutting and welding in manufacturing, material processing, and even laser-induced fusion research. Ultrafast lasers are a class of lasers that emit incredibly short pulses of light, typically in the femtosecond or picosecond range. These lasers have revolutionized fields such as spectroscopy, microscopy, and medical imaging. They enable researchers to study phenomena that occur on ultrafast timescales, leading to new insights into fundamental processes in physics, chemistry, and biology.

Laser optics, the science and technology of manipulating laser light, has revolutionized various industries, including technology and medicine. Lasers, which emit intense and coherent light, have unique properties that make them invaluable for precise and controlled applications. From high-speed data communication to non-invasive medical procedures, laser optics has transformed how we interact with and utilize light. This article explores the diverse applications of laser optics in modern technology and medicine, highlighting its role in shaping the world around us. The widespread adoption of laser optics has dramatically enhanced telecommunications systems. Fiber-optic communication relies on lasers to transmit data over long distances with minimal signal loss. The high intensity and coherence of laser light allow for rapid data transmission rates, making fiber optics the backbone of modern internet and communication networks. Advances in laser sources have led to higher data capacities and improved connectivity, facilitating real-time video streaming, cloud computing, and global data sharing. Laser printing is a ubiquitous technology used in offices and homes worldwide. Laser printers use lasers to create static electric charges on a rotating drum, which attract and transfer toner to paper to produce high-quality text and images. The precision of laser optics ensures accurate printing with sharp details and fine lines. Laser imaging techniques, such as laser scanners and laser cameras, are also employed in various applications, from document scanning to medical imaging.