29 May 2011

Vibraject : The analgesic syringe clip



VibraJect, a battery operated analgesic syringe clip designed to reduce the pain associated with dental injections.
It's effective in reducing the discomfort of extremely painful palatal, mandibular block, infiltration and intraligamental injections and can also offer a great deal of emotional relief to the needle-phobic and the unusually pain sensitive.

Practical and convenient to use, VibraJect saves you time by eliminating the use of a topical anesthetic, allows you to use your normal injection technique (so there's no learning curve) and with no disposable accessories, you won't incur any additional costs. What's more, VibraJect allows you to insert the needle faster, shortening the injection time. Simply put, VibraJect is an easy way to take the pain out of injections.



How it works
VibraJect clips easily onto the barrel of conventional and intraligamentary dental syringes (and some disposable syringes) and vibrates the needle at a high frequency while injections are administered.

Its effectiveness is based on the Gate Control Theory of nerve function proposed in 1965 by psychologists Ronald Melzack and Patrick Wall. In short, the theory suggests that nerve endings sense vibrations first and then cannot transmit feelings of pain. So the vibrations essentially mask your patients' discomfort, putting them at ease during even the most dreaded injections.

For more information check vibraject.com
Inputs from dentists using vibrajet highly appreciated




Gutta-percha : The inside story



Introduction

The word 'gutta-percha' comes from the plant's name in Malay, getah perca, which translates as "percha sap".
The same term is used to refer to inelastic natural latex produced from the sap of these trees


 Chemical composition

Gutta-percha is a polyterpene, a polymer of isoprene, or polyisoprene, specifically (trans-1,4-polyisoprene).


Physical properties

Gutta-percha latex is biologically inert, resilient, and is a good electrical insulator due to a high dielectric strength.
Allowing this fluid to evaporate and coagulate in the sun produced latex which could be made flexible again with hot water

Applications

1. Dentistry: Endodontic obturation
2. Earlier uses include insulation material for telegraph cables, undersea cables ( to protect from marine animals or plants) , furniture making etc.
However, better synthetic materials replaced gutta-percha

3. The "guttie" golf ball (which had a solid gutta-percha core) is another important application of gutta-percha in sports.

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