An interview with developer of noise reduction dental earplugs, Dr Sam Shamardi

Top Quote The world is becoming a noisier place, so protection and prevention are essential. End Quote
  • (1888PressRelease) September 19, 2017 - Although noise exposure in dentistry may appear to be minimal, the potential for noise-induced hearing loss is an issue in the field. Various studies have shown that a significant number of dental professionals are affected each year. Aiming to address this matter is US dentist Dr Sam Shamardi, who developed noise reduction earplugs especially designed for use in the dental office. He recently introduced the product, first launched in 2014, at Dental Expo South in Christchurch in New Zealand, where the company signed a new distribution deal. Dental Tribune had the opportunity to talk with Shamardi about noise pollution in the dental practice and the unique technology used in the DI-15 earplugs.

    “Dentistry is known as the field of prevention, yet when it comes to protecting our hearing, we have completely ignored our motto.”

    Dr Shamardi, what sounds in the dental office are damaging to hearing?
    All of them! We as dental professionals are exposed to constant dangerous levels of noise that have a long-term, permanent effect on our hearing. Most usually identify with the highspeed handpiece, but high-speed suction, ultrasonic instruments and cleaners, laboratory machines and model trimmers all cause damage.

    Sounds that are 85 dB and above result in hearing damage and are directly related to the duration and frequency of exposure, among other factors. Thus, extreme noise exposure for short periods can be as damaging as mild exposure for prolonged periods. Considering that as dental professionals our average careers are 35 years long and typically 40 hours a week, our exposure time spent in this chronic noise environment is substantial.

    The dental literature shows values for dental equipment that clearly exceed 85 dB and in many cases even 100 dB. Noise standards further illustrate that, at these ranges, as little as 15 minutes per 2 hours of exposure daily can lead to permanent damage; thus, it is no surprise that we all know colleagues with hearing issues as a result.

    It really is not a question of will our ability to hear be affected through occupational exposure to sound, but more a question of when and to what extent, and the best way of preventing this from occurring is by using hearing protection.

    Is it important to protect one’s ears at all times or just during noisy procedures?
    It is always best to protect oneself at all times; do we wear gloves, masks, gowns and loupes during major procedures only or for all examinations and routine treatments?

    Certainly, some procedures will have a greater noise output and exposure than others, but a dental office is in a constant state of action and there is always something noisy going on in another room even if one is not involved in a noisy procedure oneself.

    You developed the DI-15 earplugs. How do they work?
    The DI-15 high-fidelity electronic earplugs are revolutionary and the first of their kind in dentistry. They utilise patented advanced circuitry in a tiny microchip that provides protection against all damaging sounds in the dental environment, as needed, while still allowing for 100 per cent clear hearing. Thus, one’s ability to communicate clearly with patients and staff is not compromised, and hearing damage is prevented.

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