VibraJect: Worth the Investment?

VibrajectI have heard a great deal about the Vibraject which attaches to the barrel of the syringe and creates small vibrations which makes injections almost painless. The vibrations confuse the nervous system so it does not know what to feel. This can be used for blocks, infiltrations and PDL injections. Is it worth the investment? Does this really make injections almost painless?

Editors Note:

According to the company:

Vibraject’s “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.”

“The VibraJect’s ability to assist in the reduction of pain perceived by the patient was assessed by qualified dentists in a randomized controlled clinical trial at Queen’s University Belfast, N. Ireland. The study involved 329 patients and it was found that by using the VibraJect, patient’s perception of pain was reduced. This was statistically highly significant, indicating less painful injections for patients, especially in the most painful areas, whereas in this particular study, topical anesthetic did not. The involved dentists gave positive feedback such as its ease of use, efficiency, and its non-invasiveness. Overall, it was deemed to be a useful tool in the quest to improve dentist-patient rapport. ”

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3 thoughts on “VibraJect: Worth the Investment?

  1. I have been using the Vibraject for about a year and the feedback from my patients is generally that it significantly reduces the pain of the injection. Most people hate getting a ‘shot’. It may not eliminate the pain of an injection but it certainly makes it more tolerable. I use it on every patient I inject.

  2. I started using the Vibraject in Feb of 2007 primarily with what I call an intrapapillary injection. I use a short 25 ga needle with the bevel down in a LIgmajet syringe with the Vibraject attached to the barrel. No topical is needed. The needle tip is placed against the papilla and allowed to vibrate for 1-2 secs. then advanced only until the bevel of the needle penetrates the tissue. At that time, I administer a drop in order to blanch the tissue slightly then inject very very slowly. I might take 30-60 secs to inject a single ring on the Ligmaject syringe. It usually only takes 1-2 rings. Best results occur when inject is done distal to the tooth to be treated, but I often add another “click” on the mesial. It’s important to get back pressure when injecting and the times I haven’t, the anesthesia has been less effective.

    I have been able to do fillings, crowns and endo using this technique. It works 99% of the time and the Pt is numb in 2 minutes. With a mandibular block, it can take 7-15 mins and if you miss, you have to wait another 5-10 mins.

    The Vibraject can be used with standard hypodermic syringes as well and I follow a similar protocol barely inserting the tip of the needle and beginning the injection. Most patients don’t feel anything, but some still do. It saves me lots of time: no waiting for topical anesthetic for 2 mins and no waiting for missed mandibular blocks.

  3. dose anyone have any knowledge regarding use of this technology for non oral injections? (I.M I.V)?



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