English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nearly 50 years after the first dental laser was created, lasers have finally found their way onto the shelves of dental clinics. A perceived mysterious technology, whose most dramatic use is in the art of warfare, is now an integral part of the medical and dental armamentarium. As presently used in therapeutic medical and dental applications, lasers are, in essence, devices that produce a monochromatic and directional beam of light powerful enough to do biomedical work and with much less electrical energy converted into waste heat. In 1960, Theodore Maiman, a scientist with the Hughes Aircraft Corporation, developed the first working laser device which emitted a deep red colored beam from a ruby crystal.7 During the next few years, dental researcher studied the possible applications of this visible laser energy. The word Laser is an acronym for light amplification by stimulated emission of radiation. All available dental laser devices have emission wavelength of approximately 500 to 10,600 nm. A laser consists of lasing medium contained within an optical cavity, with an external energy source to maintain a population inversion so that stimulated emission of a specific wavelength can occur, producing a monochromatic, collimated and coherent beam of light. One of the most commonly used lasers in dentistry is diode laser. Diode laser is a solid active medium laser manufactured from semiconductor crystals similar to that found in a lightemitting diode using some combinations of aluminum or indium, gallium and arsenic. Diode lasers emit light when an electric current passes through them. Laser light is generated Objective: The objective of this study was to investigate the rise in temperature on the external root surface during 940 nm diode laser assisted root canal therapy. Materials and methods: A total of 120 human single rooted extracted teeth were included in the study. The root canals were enlarged and laser irradiation was performed at four different settings (1 W continuous mode, 1 W gated mode 10/10, 2 W continuous mode and 2 W gated mode 10/10). The rise in temperature was measured at apical, middle and cervical thirds. The temperature changes were evaluated by a thermocouple. The threshold temperature rise of 7oC is commonly considered as the highest temperature limit biologically acceptable to avoid periodontal damage. Results: The mean temperature rise on external root surface in our study was below 7oC in all parameters and all portions of root surface. Conclusion: The 940 nm diode laser at 1 W CM, 1 W gated 10/10, 2 W CM and 2 W gated 10/10 can be considered safe for use for laser assisted root canal therapy.

Temperature Rise on External Root Surface during Laser Endodontic Therapy using 940 nm Diode Laser: An in vitro Study