Electric toothbrushes are overpriced, but these Prime Day deals are worth smiling about

Oral-B Pro 3: was £100 now £45 at Amazon
This mid-range toothbrush is a solid pickup while it's 55% off for Prime Big Deal Days. It doesn't boast many high-end features, but it has the basic ones you need to brush your teeth effectively and efficiently, including a two-minute timer and a visible pressure sensor.

Oral-B iO3: was £160 now £75 at Amazon
The Oral-B iO3 offerssolid performance, though it lacks some of the high-end features you might expect from Oral-B's other premium toothbrushes. Still, it comes with a pressure sensor, three brushing modes, and an alert for when you need to change the brush head. It's also over 50% off at Amazon right now, so this could be a good time to pick it up.

Philips Sonicare Advanced Whitening Toothbrush: was £249.99 now £94.99 at Amazon
There are toothbrushes, and then there are toothbrushes, and the Philips Sonicare Advanced Whitening Edition is firmly in the latter camp. Amazon has knocked an almighty £155 off its normal price for Prime Early Access, and for less than £100 you're getting Bluetooth connectivity, four clean modes, and a charging travel case.

Oral-B Smart 6: was £219.99 now £64.99 at Amazon
Three replacement brush heads, a rechargeable handle, and a travel case make this Oral-B model excellent value. 

Waterpik Nano Plus water flosser: was £74.99 now £49.99 at Amazon
Water flossers are devices that dislodge the gunk between your teeth with concentrated jets of water. They're much more sustainable than disposable floss, and cheaper in the long run – and right now you can save £25 on one of the best-known of the bunch, the Waterpik Nano.

Panasonic EW-DJ11 Compact & Portable Water Flosser: was £59.99 now £31.99 at Amazon
Panasonic's EW-DJ11 water flosser is a travel version with a built-in reservoir. It collapses down like a toy lightsaber for easy storage, has two pressure settings, and is powered by AA batteries.