Introduction
The Oral-B iO Series 8 Electric Toothbrush is designed to provide an advanced oral cleaning experience. It combines micro-vibrations with a dentist-inspired round brush head for effective plaque removal and gum care. This manual provides essential information for the proper use and maintenance of your device.

Image: The Oral-B iO Series 8 Electric Toothbrush, including the handle, two replacement brush heads, a travel case, and the magnetic charging base.
Key features include a Smart Pressure Sensor, an interactive display with AI Recognition for guided brushing, and multiple cleaning modes to suit individual needs.
Setup
- Charging the Handle: Place the toothbrush handle on the magnetic charging base. A full charge typically takes approximately 3 hours. The interactive display will show the battery level.
- Attaching the Brush Head: Align the brush head with the metal shaft on the handle and push it down until it clicks into place. Ensure it is securely fastened.
- Initial Use: For first-time use, it is recommended to fully charge the device. You may also download the Oral-B app and pair your toothbrush via Bluetooth for personalized guidance and tracking.

Image: The Oral-B iO Series 8 toothbrush handle, travel case, and magnetic charger, illustrating convenient charging and portability.
Operating Instructions
- Power On/Off: Press the power button to turn the toothbrush on or off.
- Selecting Cleaning Modes: Use the mode button to cycle through the 6 available cleaning modes: Daily Clean, Sensitive, Whiten, Gum Care, Intense, and Super Sensitive. The interactive display will indicate the selected mode.
- Brushing Technique: Apply a small amount of toothpaste to the brush head. Guide the brush head slowly from tooth to tooth, allowing it to clean each surface. Do not scrub aggressively.
- Smart Pressure Sensor: The toothbrush features a Smart Pressure Sensor.
- A green light indicates optimal pressure.
- A red light indicates excessive pressure.
- No light (or white light) indicates insufficient pressure.
- Built-in Timer: The 2-minute quadrant timer pulsates every 30 seconds, signaling when to move to a different quadrant of your mouth. This ensures a complete and even clean.
- AI Recognition and App: Connect your toothbrush to the Oral-B app for real-time feedback on your brushing technique and coverage. The app tracks how and where you brush, providing guidance to improve your habits.

Image: A visual comparison demonstrating the Oral-B iO Series 8 electric toothbrush's superior plaque removal compared to a manual toothbrush.

Image: Close-up of the Oral-B iO Series 8 handle demonstrating the Smart Pressure Sensor with a green light indicating perfect brushing pressure.

Image: The Oral-B iO Series 8 display illustrating the six available cleaning modes: Daily Clean, Sensitive, Whiten, Gum Care, Intense, and Super Sensitive.

Image: A series of displays from the Oral-B iO Series 8, showing indicators for cleaning modes, the 2-minute timer, a brush head change alert, and the battery level.

Image: The Oral-B iO Series 8 toothbrush display showing a 'Hello' message and battery level, alongside a smartphone screen displaying the Oral-B app's AI brush tracking feature with 6 zones.
Maintenance
- Cleaning the Brush Head: After each use, rinse the brush head thoroughly under running water while the handle is still on. This helps remove toothpaste residue and debris.
- Cleaning the Handle: Wipe the handle with a damp cloth as needed. Do not immerse the handle in water.
- Brush Head Replacement: For optimal performance and hygiene, replace your Oral-B iO Series brush head every 3 months, or sooner if the bristles are frayed or worn. The interactive display may also provide a brush head change alert.
- Charging: Keep the toothbrush charged by placing it on the magnetic charging base when not in use. Avoid completely draining the battery frequently to prolong its lifespan.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Toothbrush not turning on. | Low battery. | Place the handle on the charger for at least 30 minutes, then try again. Ensure the charger is connected to a power source. |
| Brush head not vibrating effectively. | Brush head not properly attached or worn out. | Ensure the brush head is securely attached. If it is old, replace it with a new Oral-B iO Series brush head. |
| App not syncing or tracking brushing accurately. | Bluetooth connection issue or app glitch. | Ensure Bluetooth is enabled on your device and the app is open during brushing. Restart the app or your phone. Re-pair the toothbrush if necessary. |
| Battery drains quickly. | Normal wear over time or frequent use of intense modes. | Ensure the toothbrush is placed on the charger after each use. Battery performance may decrease over several years of use. |
Specifications
- Model Number: iO M8.3B2.2B
- Product Dimensions: 7.01 x 3.94 x 9.96 inches
- Weight: 1.16 Pounds
- Power Source: Battery Powered (1 Lithium Ion battery included)
- Brush Head Firmness: Soft
- Special Features: Pressure Sensor, Interactive Display, AI Recognition, 6 Cleaning Modes
- UPC: 069055128886
Warranty Information
The Oral-B iO Series 8 Electric Toothbrush typically comes with a 2-year limited warranty from the date of purchase, covering defects in materials or workmanship. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the warranty card included with your product or visit the official Oral-B website.
Support
For further assistance, product registration, or to purchase replacement parts and accessories, please visit the official Oral-B website or contact Oral-B customer service. Contact details can typically be found on the product packaging or the Oral-B website.
You can visit the Oral-B Store for more information: Oral-B Store on Amazon





