The VRN DQ-40 Ultrasonic Periodontal Therapy System is an advanced 2-in-1 dental unit that combines ultrasonic scaling and air polishing in a single device. It is designed for comprehensive periodontal treatment, including supragingival and subgingival scaling, air polishing, root canal irrigation, and plaque and stain removal. The system features intelligent mode recognition, precise power control, and ergonomic handpieces to provide efficient, comfortable, and minimally invasive treatment for both dentists and patients.