Physics-Current Event #3

Physics-Current Event #3 - The elasticity of the tooth is...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 26 February 2010 Elasticity in Dentistry For my third quarter physics current event, I read an article in Physics World, called “Arm dentists with lasers, urge researchers.” This article was about how dentists have been researching the use of elastics to study teeth. As children lose their baby teeth and grow in adult teeth, and the tooth enamel becomes very important in keeping the teeth strong to protect from cavities. One technique has been recently discovered by a man named Simon Fleming from the University of Sydney that tests the elasticity of teeth without scratching or harming the teeth. The new technique preformed by Fleming is done by using lasers to heat and illuminate the tooth’s surface causing it to “rapidly expand and initiate an ultrasonic surface acoustic wave (SAW) that then propagates outwards” (Extance). This vibration is safe to the living tooth because it will only penetrate one wavelength into the root of the tooth.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The elasticity of the tooth is then determined by the velocity of the wave. By determining the tooths elasticity, dentists are able to see the level of mineralization on each tooth. Checking the level of mineralization is very important and eventually leads to understanding the overall health of the teeth. As the sound waves vibrate and bounce off the teeth the dentists can learn a great deal about the teeth. As we have been learning in class, elasticity can be used for many different applications and wavelengths also. The measuring of sound waves and vibrations are not only used in the physics world, but in medical fields as well. Work Cited Extance, Andy. " Arm dentists with lasers, urge researchers." Physics World . Institute of Physics, 26 Feb. 2009. Web. 24 Aug. 2009. < http://physicsworld.com/cws/article/news/40175> ....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern