Pain and anxiety during dental injections remain significant barriers to effective dental treatment, particularly among pediatric patients and individuals with dental phobia. This paper presents NERVO‑EASE, a compact dental gum vibrator designed to reduce pain perception during local anesthesia administration through the principle of vibrational analgesia. The device operates according to the Gate Control Theory of Pain, where vibrational stimuli activate large diameter sensory nerve fibers that inhibit transmission of pain signals to the brain. The system integrates an Arduino Nano microcontroller, a miniature vibration motor operating in the range of 100–135 Hz, a BC547 transistor driver circuit, a TP4056 lithium battery charging module, and a rechargeable Li‑ion battery. The device is enclosed in a compact PLA‑based 3D printed casing and includes a detachable food‑grade silicone tip to ensure hygienic contact with oral tissues. Experimental testing using simulated gum models demonstrates stable vibration output and improved comfort during simulated injection procedures. The proposed system offers a low‑cost, portable, and easy‑to‑use solution suitable for dental clinics, educational laboratories, and rural healthcare environments where expensive commercial systems may not be available. Keywords Vibrational Analgesia, Dental Pain Reduction, Arduino Nano, Biomedical Device, Pediatric Dentistry, Local Anesthesia
Bijwe et al. (Wed,) studied this question.
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