Review on 🦷 Uncover Supreme Cleanliness with Oral B Pro Health Toothbrush by Linda Braley

The same pack, with the same number (91172310) in the lower right corner on the front label (although 91172309 on the back) but one set of bristles fewer. The photo shows five pairs of blue and white bristles pointing up and five pairs of pink and blue bristles pointing down. Toothbrushes of this design that I have previously had had the same number of rows of bristles as shown in the photo, but the brushes I sent only have four sets of bristles of each type, resulting in an overall shorter brush head. Given the identical packaging, I'd say it's either a design change or a manufacturer error. Has anyone noticed the same?