What are the effects of the use of bactine antiseptic spray on your teeth?

See a dentist. This isn't something you can home remedy. You may have damaged your teeth. You aren't supposed to put bactine in your mouth.

Like kaismama said, don't use antiseptic spray in your mouth. It's likely to do absolutely nothing after you first swallow and might be toxic if taken internally.

The reason why teeth whitening strips have instructions with set time limits is because the use a harsh acidic bleach that whitens your teeth by dissolving and bleaching everything in its path.

Sadly, in pursuit of those TV white teeth you have badly damaged your own. Caps will be needed as your teeth will likely deteriorate at an accelerated rate now as most of the enamel is gone and it will cost.

To keep your mouth at a nice pH level for teeth health (alkaline) try chewing a sugar free gum to keep up saliva production. Decay causing, acid loving bacteria thrive in a sugar affected mouth.