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Home > Science Photo Library > Images Dated > 2006 > February > 27 Feb 2006

Images Dated 27th February 2006

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 4 pictures in our Images Dated 27th February 2006 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery. We are proud to offer this selection in partnership with Science Photo Library.


Used and unused toothpicks, SEM Featured 27 Feb 2006 Print

Used and unused toothpicks, SEM

Used and unused toothpicks. Coloured scanning electron micrograph (SEM) of an unused (left) and a used (right) toothpicks. The used toothpick has a blunt end and is covered in dental plaque. Plaque consists of a film of bacteria embedded in a glycoprotein matrix. The matrix is formed from bacterial secretions and saliva. Plaque is the main cause of tooth decay. The bacteria feed on sugars in food, producing acid as a waste product. This acid corrodes the teeth's enamel coating, resulting in dental caries. A build-up of dental plaque can also lead to inflamed and infected gums. Severe gum disease can lead to teeth falling out. Magnification: x20 when printed at 10 centimetres wide

© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY