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By DEBORAH SHEPHERD
Time*-Democrat StafT Writer
Thanks to an electronic machine slightly larger than a pack of cigarettes, patients of dentist John W. Harre Jr. can experience pain-free dental care without enduring injections or post-operative numbness.
The electronic anesthesia system is a hand-held unit powered by a nine-volt battery. Connected to adhesive pads placed on key nerve points on the patient’s face, the unit sends signals to the nerves that effectively block pain. It is known as transcutaneous electrical nerve stimulation.
TENS is not a new concept in dentistry; Dr. Harre learned about it in the late 1970s and watched as the industry refined the technology. This spring he introduced the 3M dental electronic anesthesia system to his Warrenton practice and estimates that 10 percent of his patients have tried it.
“Not everyone is comfortable with trying it, nor is it recommended for all patients or every procedure,” he said. “But those who have tried it have had very favorable comments.”
What patients seem to like most about electronic anesthesia is freedom from the unpleasant numbness local anesthesia leaves behind. Once the control unit is turned off, the stimulation ceases and sensation returns immediately to the skin. TENS is also popular with those who hate needles or are allergic to chemical anesthesia.
See Dental, Page 13
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