Putting what is not advised? :) Its bleach hello...... who doesn't advice it you?? Vaseline?? I dont know where you get these info but you must be very naive to believe it
nitewhite works really well..... putting gum on your gumline is not advised, dont know if it will cause any problems but i wouldnt risk it...
the bleaching trays do not have to fit perfectly its ok if a little gets out on your gums, you could actully fill the tray a little more to ensure it is reaching the neck of the tooth near you gums. if you getting the burning sensation then you can put vasoline on your gums above the teeth and it will not hurt, it acts like a coating to your gingiva
I dont know if i am allowed to post a link but here are some answers of questions you might have regarding teeth whitening http://*********.**/faqs
Fist of all bleaching trays are no longer recommended because they are messy and get in contact with your gums causing sensitivity and damage. There is another system for At home teeth whitening where you can actually manage the treatment your self.
If you have restorative work done on your front teeth anywhere from canine to canine you will not be able to do bleaching because Hydrogen peroxide doesn't whiten porcelain veneers or composite.
If you need more info PM me and ill be more then happy to help you with any questions you might have
whatever you do....do consult the cosmetic dentist...as you may get affected by the side effects of it..... i know one product Opalesence teeth whitener....better use under dentist's recommendations......