Question: what is the difference between oral b genius 8000 and 9000?
Answer: 2) Mechanism of Action: Oral-B Genius 8000 vs 9000 The Oral-B Genius 8000 comes with 5 cleaning modes however the Oral-B Genius 9000 trumps it with 6. The additional cleaning mode is Tongue Cleaning which could be useful for people who like using their toothbrush to clean their tongue.