A Mouth Opener with Aerosol Suction is a dental isolation and evacuation device designed to keep the patient’s mouth comfortably open while simultaneously reducing aerosols, saliva, water spray, and debris during treatment. It combines a cheek/lip retractor or bite block with an integrated high-volume suction system to improve visibility, moisture control, and infection prevention. (dentafix.com.au)

These devices became especially popular in restorative, hygiene, and orthodontic procedures where aerosol reduction is important