Hi girls,
Yup, it is a type of cleaning, except that they use a powder jet to blast the stains and dirt away, AFTER they do a regular cleaning for you. Not all dentists have this...I remembered the name already...it is called Prophy Jet cleaning... i don't know other places which it, but my regular dentist recommended me the one at Peach centre ground level. I also forget the name... lemme go call Peace Centre info desk and revert back to you girls...
As for how long it lasts...if your teeth is stained, it cleans away all the stains, and will last as long as you maintain good oral hygiene. Of course, if you smoke, drink caffeinated drinks and don't rinse/brush after that, it will have a shorter shelf life lah...
Mine was brown stains caused by tea and dark soya sauce (haha, according to my dentist)...so he recommended me to go for the prophy jet cause normal cleaning cannot clean out the stains in between the teeth area.
One thing though, if your original teeth is not white, but yellowish, the outcome will still be your original teeth colour, but of course, sparkling clean lah, without any stains etc.
I must say, it really is a good stain removal method..it even cleans out the gaps or in between your teeth...i kept licking my teeth after that cause felt so clean hee hee
If you are looking for clean, stain free teeth, this is a good bet. But if you want Miss-Universe-white-teeth, go for bleaching...