Please activate JavaScript!
Please install Adobe Flash Player, click here for download
ePaper created 2016-04-05, 13:01:42 | version 1.38.0
44 laser 1 2016 newsinternational Laser vibrometry initiates Breakthrough in scaler research Laser technology explores Nanostructures with living cells Steady growth in the Dental laser market By recording a scaler operating under the micro- scope at 10,000 times the speed of regular filming, they found tiny water bubbles forming at the end of the scaler, a process known as cavitation. Accord- ing to them, the area of cavitation near the free end of the tips increased with greater power and with the amplitudes of displacement at the tips. The formation and collapse of water bubbles cre- ate significant forces that could disrupt biofilm without touching the tooth’s surface, paving the way for new instrument designs that are less in- vasive, the researchers said in the paper. For the study, a Satelec P5 Newtron Scaler with Satelec tips 10P, 1 and 2 operating at medium and high speeds was recorded at up to 250,000 frames per second in a water tank. The tip displacement was then recorded using scanning laser vibrometry. It is the first time that both methods have been ap- plied to study cavitation around ultrasonic scalers. The study, titled "High speed imaging of cavitation around dental ultrasonic scaler tips", was pub- lished online on March 2 in the PLOS One journal. Using Laser Technology, Aleksandr Ovsianikov from the Vienna University of Technology wants to create microstructures with embedded living cells. The behaviour of cells strongly depends on their environment. If they are to be researched and manipulated, it is crucial to embed them in suitable surroundings. Aleksandr Ovsianikov is developing a laser system, which allows living cells to be in- corporated into intricate taylor-made structures, similar to biological tissue, in which cells are sur- rounded by the extracellular matrix. This technol- ogy is particularly important for artificially growing biotissue, for finding new drugs or for stem cell research. Ovsianikov has now been awarded the ERC Starting Grant from the European Research Council (ERC) of approximately 1.5 million Euros. Interdisciplinary cooperation is crucial for this project, which connects engineering, material science, biology and chemistry. Born in Lithu- ania, Ovsianikov obtained his PhD in Hannover, Germany. Now he has been working at the Vienna University of Technology for two years. Source: www.tuwien.ac.at In addition to oral surgery, dental lasers are used for a variety of applications. Owing to the increas- ing demand in this sector, among other influenc- es, the worldwide market for the devices will grow by a compound annual growth rate of 5.2 per cent over the next five years and is expected to exceed US$200 million (£144 million) by 2020, a new report has predicted. According to the report, this growth will primarily be driven by the Asia Pacific market as clinicians and pa- tients in this region are increasingly becoming aware of the benefits of laser devices. Other developments contributing to the growth of laser use include the rise in the number of aesthetic procedures on the continent and the ageing population. The report, which was conducted by market research provider Market- sandmarkets and published by Re- portBuyer in Charing, Kent, last week, analysed industry trends and the market shares of top play- ers in the field. It also provides insights into the markets for dental lasers across various regions, exploring new distribution channels, new client bases and different pricing policies. Source: www.dental-tribune.com Fig. 1: A laser hardens the liquid material exactly at the focal point. – Fig. 2: A three-dimensional grid can be produced, which keeps the cell in place. [Picture: © TU Vienna] [Picture: © Barbol] [Picture: ©everything possible] Fig. 1 Fig. 2 12016