Tooth and Mouth Problems

I have huge gaps between my teeth and I am planning to get braces to fix them. What are the charges for different braces.

My age is 35 my upper teeth 2 side gap and my upper teeth out of front i have fixed clip how many days corrected my problem.

I have bumps on my tongue last 8 days my Dr said it's normal and my throat is allergic I take medicine but I headed it could cancerous

My teeth is becoming black bt I dnt have any cavitie I have gone for cleaning two times then it had gone and it appeared soon

I have underbite and I wanted to know that is there any disadvantage of underbite surgery like weakness of bone or etc. After surgery I would be able function with my mouth as before? Plz answer to help me.

Having white patches in mouth with no irritation, inflamation. Took medicine but didnt solve the problem.

If i take an xray, how does the image tell if i need a RCT? I like to be sure as couple of dentist i met just said the symptom tell them so and told me xray might not be conclusive. correct?

I have the problem in perfectly speaking the three s sounds. Most of the time I can only speak the one s sound. What to do?

I heard that zirconia crown are now best asthetic crown to have. I wanted to have on my front 6 teeth. Wanted to know whether it will cause harm to existing teeth or dentin. Can I replace it after 10 years.My age is 27 now. Do my teeth will be in condition to have new crown after 10 year?how many times I can replace it. Please share your views Thanks in advance.

Teeth are not becoming after brush from many years. I brush twice a day with Colgate paste. But, teeth are yellow