The Philips Sonicare
9900 Prestige is part of the
Toothbrushes test program at
Consumer Reports. In our lab tests, Adults Electric Toothbrushes
models like the 9900 Prestige are rated on multiple criteria, such as those
listed below.
Cleaning:
The cleaning performance of the toothbrush as evaluated using the TWQH Plaque Index before and after brushing.
Ease of use:
Overall ease of use of the toothbrush including evaluation of the weight, handle comfort, ease of removing the brush-heads, etc.
Battery Performance:
Evaluation of battery performance accounting for both run time and charge time.