Power office teeth whitening would be the best solution. This can be done in one sitting in most of the case.

Teeth whitening is a fairly complex job considering the various types of teeth yellowing due to systemic or local causes.  If your teeth are brown or yellow due to flourosis,  that is excessive fluoride in drinking water, or due to tetracycline stains caused due to childhood antibiotics, or due to enamel hyperplasia,  etc etc...  Treatment options vary according to cause.  Normal bleaching can be done by lasers,  or plasma arc lights or even home bleaching kits.  If the stains are deep and intrinsic then lamination of teeth may be the perfect option.  In very severe cases of dark grey teeth we may need to do metal free ceramic crowns.  So unless we evaluate u clinically and know the cause of your yellow or brown teeth,  we can't guide u perfectly.  if you send me your pics then we could opine better.  Feel free to consult Laser Smile Care Centre.  God bless you..

Hi, u need to get your teeth cleaned by a dentist first and then u can get teeth whitening done by your dentist as well, if done properly your teeth will become 2 shades whiter but it varies from person to person.. all the best

First of all a diagnosis has to made regarding why ur teeths have yellow apperence..after that your dentist can suggest you multiple options available in office for teeth whitening.

See there could be n no. Of reasons ur teeth are yellowish, like improper brushing technique, fluorosis, plaque tartar deposits, calculus deposits,  due to some of ur eating n drinking habits, thin enamel layer of ur teeth,  etc...  So, likewise it would depend on the condition of teeth that which tooth-whitening procedure would suit ur case so Visit ur dentist n get the needful done, feel free to consult Innovadent dental hospital,Gurdaspur, Punjab anytime....

please do share your teeth picture and go through my article on teeth whitening (https://www.practo.com/healthfeed/teeth-whitening-more-of-a-hope-than-hype-7629/post). yellowness of teeth may be because of various reasons. you just need to find the actual cause and treat it.