Tooth and Mouth Problems

3 years back I had Root canal treatment. Today, while having dinner my tooth crown came off. I have a dentist appointment on Saturday which is 4 days from today. I was able to put back the crown into its place. Do I need to visit the same dentist or any dentist is fine. What I need to do in order to protect my exposed teeth?

My teeth is to yellow i dont know why i brush it 2 times a day.please provide me solution to make it white

Which brace should I prefer for a 13 year old . . ... ... .. . . ... . . . . . . . . . . . . . . . . .

I want to go undergo Whitening Treatment. I need results in 7 to 8 days max. I am confused if I should go for Zoom Teeth Whitening or Home Trays. The problem with Zoom Teeth Whitening is that I may get sensitivity and Pain or Gums problem or any other future problem. I am also not sure if I can sit through 1 hour treatment peacefully. Home Trays is relatively safe and risk free as per my knowledge but it gives results only after 12-14 days. I have sometimes bleeding problems in my gums. I don't smoke or take tobacco or take dark color drinks like cofee or tea. My current shade is D1 or D2 and I want A1-A2. Pls suggest. I am 32 and male.

I've been having mouth ulcers from last 3 days and tried some gels like orasore and tablets like becasules to cure it but nothing worked till now. Please  advice the name of medicines. Thanks!

Every morning when I clean my tounge by tooth brush it start bleeding. I don't known what to     do...

Please suggest me some medicine for mouth ulcer. I have been having becosules from last 5 days but no relief and it's paining.

My husband was operated twice once in 2003 n second in 2012 where his right jaw especially removed A bridge especially planted to access chewing in 2017 Now some swelling hs appeared which d dentists think should be referred to an Oncologist plz suggest

Need to know through XRays if the kid really needs Half/Partial root canal. Please help, I have the X-rays taken yesterday.

I am looking for something which can be used for tooth whitening. Any paste or tube or something which can be applied and used.