Question 1

Which is better, Oral-B iO Series 9 or Bitvae D2 Smart?

Accepted Answer

Based on our testing, the Oral-B iO Series 9 scores higher overall at 9.1/10. The Oral-B iO Series 9 scored 9.1/10 and the Bitvae D2 Smart scored 8.5/10 in our Best Smart Electric Toothbrushes 2026 evaluation.

Question 2

Is the Oral-B iO Series 9 worth it over the Bitvae D2 Smart?

Accepted Answer

The Oral-B iO Series 9 scores 9.1/10 while the Bitvae D2 Smart scores 8.5/10. The Oral-B iO Series 9 is our "Best Overall" pick in the Best Smart Electric Toothbrushes 2026 category.

Oral-B iO Series 9 vs Bitvae D2 Smart: Which to Buy?