I have underbite and about 4 teeth from lower jaw were infront of my upper teeth. is it possible to use invisalign to correct it. my jaw was normal.

Orthodontics: With an extreme crossfire, you might be better off with traditional orthodontics. More than likely you will need some tooth colored fillings called bite blocks or buttons to be placed on the tops of your back teeth to keep you bite open as the teeth are moved. The good news is that most orthdontists provide free consultation. This means that they can give you your treatment options for free

Orthodontist: You'll need to be evaluated by a local orthodontist to have your question answered. Depending on the extent of the "underbite", Invisalign can be an option. Extensive movement may be better accomplished with traditional brackets and wires. All the best.

See an Orthodontist: Many orthodontists offer an initial complimentary consultation. This allows you to find out what type of treatment for your individual situation is recommended and get all your questions answered. Take care.

See orthodontist: There is no way to tell if you are a candidate for invisalign without seeing the entirety of your bite and teeth. A free consultation with an orthodontist (you can find one in your area by going to the AAO web site) can determine if you are a good candidate for this treatment.

Possibly: A full evaluation would be needed to determine if Invisalign is appropriate for you. While Invisalign is great for many cases there are limitations. Please see your orthodontist.

Diagnosis: The appropriate progression is Diagnosis>Treatment Plan>Mechanotherapy, not the other way around. If the only tool you have is a hammer, everything looks like a nail. Seek examination from fully qualified specialist Orthodontist who will know What's Wrong>How to Treat>Appropriate Appliance Therapy, in that order.