Most helpful critical review
97 of 99 people found the following review helpful
Great brush, flawed design for long life
on 14 August 2014
The good news is this is a great toothbrush, really effective. The bad news as many others have pointed out is its designed to fail uncannily out of warranty so I have had a few, as long as you buy on offer price you can live with it. As an engineer I have carried out post mortems on several. 1st common fault is the rubber seal around the metal spindle the brush fits on, it is very thin and wears and splits, allowing water into the electronics, this causes the erratic behaviour such as random buzzes and charging failure. It can be cured if you can get it apart, dry it out and fill the split seal with silicon sealant. This seal really should be a replaceable and an available part (or a lot thicker!). 2nd fault is the motor linkage breaking. Curiously it seems to be made of die-cast steel instead of normal ductile mild steel. Cast steel is more brittle and will eventually crack and fracture under repeated stress (such as a vibrating mechanism!), curious choice of material eh? You can minimise the stress on this thin bit of metal by avoiding pressing too hard with the brush which you shouldn't do with this type of brush anyway, the high speed does all the work without pressure on the teeth. On the basis of what I have seen I certainly would NOT buy any of the more expensive models. All said, it is a good brush, my dentist has not had to do anything for years and comments on how clean my teeth are with no build up so its worth it in my book, just a pity its made like this.