Introduction
The Oral-B iO Series 9 Electric Toothbrush combines powerful, yet gentle micro-vibrations with Oral-B's unique dentist-inspired round brush head design for a professional clean feeling every day. This manual provides essential information for setting up, operating, and maintaining your iO Series 9 toothbrush to ensure optimal oral hygiene.
- Achieve 100% more plaque removal in just 1 week and even 4X more along the gumline compared to a manual brush.
- Experience whiter teeth from day 1 by removing surface stains with the iO dentist-inspired round brush head.
- Maximize your coverage with innovative A.I. Position Detection that tracks brushing across all 3 surfaces of your teeth.
- Benefit from personalized guidance to improve brushing habits in just 1 week.
- Utilize 7 clean modes and an interactive color display to track brushing time and celebrate your cleaning achievements.
Safety Information
Do not use this product for purposes other than oral hygiene. Be gentle while brushing to protect your gums and enamel. Follow the personalized guidance for optimal use.
Setup & Initial Use
To begin using your Oral-B iO Series 9 Electric Toothbrush, ensure it is fully charged. Attach a brush head and apply toothpaste. The interactive display will guide you through initial settings.
Directions for Use
Apply toothpaste to the brush head, press the power button to turn it on, select a brushing mode, and guide the brush head along all surfaces of the teeth for the recommended brushing time. The Smart Pressure Sensor will indicate if you are brushing too hard or too soft.

Image: The Oral-B iO Series 9 brush head is designed for superior plaque removal, reaching 100% more plaque than a manual toothbrush.

Image: The Oral-B iO Series 9 comes with a convenient charging travel case and a magnetic charger for easy portability and power.
Operating Your Toothbrush
The Oral-B iO Series 9 offers a personalized brushing experience with multiple modes and intelligent feedback.
Brushing Modes
Select from 7 distinct cleaning modes to suit your needs:
- Daily Clean: For everyday plaque removal.
- Sensitive: Gentle cleaning for sensitive areas.
- Gum Care: Massages gums for improved gum health.
- Intense: For a powerful clean, targeting stubborn plaque.
- Whiten: Designed to remove surface stains for whiter teeth.
- Super Sensitive: Extra gentle for extremely sensitive teeth and gums.
- Tongue Clean: For fresh breath and overall oral hygiene.
Smart Pressure Sensor
The toothbrush features a Smart Pressure Sensor with a light ring. It illuminates red if you brush too hard, white if too soft, and green when applying the optimal pressure. This visual feedback helps protect your gums and enamel.

Image: The Smart Pressure Sensor on the Oral-B iO Series 9 lights up green for perfect pressure, red for too hard, and white for too soft, protecting your gums.
AI Recognition & 3D Teeth Tracking
Utilize the Oral-B app to access 3D Teeth Tracking and AI Recognition. This feature guides you in real-time to ensure comprehensive cleaning across all areas of your mouth, maximizing coverage and improving your brushing technique.

Image: The interactive display on the Oral-B iO Series 9 shows selected cleaning modes, a 2-minute timer, brush head change alerts, and battery level.
Official Product Videos
Video: A hands-on review of the Oral-B iO Series 9 Rose Quartz electric toothbrush, demonstrating its features and design.
Video: A dental hygienist's perspective on whether the Oral-B iO Series 9 is worth its price tag, highlighting professional insights.
Maintenance
Proper maintenance ensures the longevity and effectiveness of your Oral-B iO Series 9 toothbrush.
Brush Head Replacement
Replace your Oral-B iO Series Replacement Brush Heads every 3 months for best results. The toothbrush display will provide an alert when it's time for a change.
Cleaning
After each use, rinse the brush head thoroughly under running water. It is recommended to rinse the brush head and main unit with warm water and allow it to air dry. Store the toothbrush in a dry area, especially when charging, to prevent mold buildup. Avoid poking sharp objects into the rubber seal at the top of the brush handle, as this can damage the electronics.
Troubleshooting
Encountering issues with your toothbrush? Here are some common concerns and solutions.
Battery Life
The Oral-B iO Series 9 battery typically lasts up to 60 days on a full charge, depending on the selected brushing mode. High-intensity modes may reduce battery life. If the battery is not holding a charge, ensure the toothbrush is properly seated on the charger. A full charge usually takes 2-3 hours.
Pressure Sensor Issues
If the pressure sensor is not responding as expected (e.g., constantly red or white), ensure the brush head is correctly attached and that you are applying appropriate pressure. The app can provide real-time feedback to help calibrate your brushing technique.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 7.01 x 3.94 x 9.96 inches; 1.39 Pounds |
| Item Model Number | iO M9.4A1.1A |
| Batteries | 1 Lithium Ion batteries required (included) |
| UPC | 069055128916 |
| Manufacturer | Procter & Gamble |
| Power Source | Rechargeable |
| Item Firmness Description | Soft |
| Color | Rosequartz |
Warranty and Support
The Oral-B iO Series 9 Electric Toothbrush typically comes with a manufacturer's warranty. For specific warranty details, product support, or service inquiries, please refer to the documentation included with your product or visit the official Oral-B website. The buybox winner indicates a 30-day refund/replacement policy through Amazon.





