After having a tooth pulled, how long should you keep gauze in for? when can you have yogurt and fluids?

Typically about 30 : Minutes if there is no bleeding. If the bleeding persists, then place a wad of new gauze and repeat as needed. I'm surprised that the doctor did not give you a post-op instruction sheet outlining the do's and dont's. Once the numbness has worn off you can resume with limited foods and liquids. I would call the doctors office for more instructions. Hope this helps.

Depends on factors: Depending on the location of the tooth, the condition the tooth was in, was it a surgical removal, are there any sutures, was it baby tooth? Did you take Aspirin or Motrin for any signif time prior the extraction, are you on a blood thinner, are your currently cycling...For a simple orthodontic extraction- 20 min should be good enough- we are hoping for a primary clot. A cool teabag for addn oozing.

Short time: I would recommend 20-30 minutes which will allow the clot to form. Pressure from biting on the gauze is the key.