If you get the tooth pulled out, it takes time, as at one time not more than 2-3 teeth are pulled out depending on condition of teeth. But if you get them cut out by oral surgeon then all the teeth can be cut in 3-4 appointments. When you get it cut out by the oral surgeon, he can do the remodelling of bone along with that, so when dentures are being made, the underslying bone is round and smooth. For more info on full mouth extractions you can read the following articles from out website to understand better. http://www.identalhub.com/articlecategory-full-mouth-extractions-86.aspx