Hello, Removal of an impacted wisdom tooth is a more involved extraction. Oral surgeons evaluate the position of the tooth with particular relation to nerves to assess the risk associated with a surgical removal. X-rays, along with a clinical exam are important details needed for this decision. Surgery removing bone is most likely required to expose the wisdom tooth and you may not have the best circumstances for healing when another tooth has an active infection. Antibiotics, prior to and after the extraction, often are prescribed and help control the spread of an infection. Often a general dentist will extract erupted teeth, but refer impacted teeth to an oral surgeon for removal. Your choice of sedation options may be different for an impaction surgery as well. If your visit was more of an emergency, this may have been a factor. Yes, often multiple teeth can be extracted at the same time when treatment planned ahead of time and pre-surgical conditions optimize healing conditions. The advantage is one visit and healing on the same side. I am concerned that you report soreness with a sour taste. A condition called dry socket can be extremely painful, require antibiotics and a return dental visit for the socket area treated by your dentist. This may occur 3-4 days after the extraction. Some soreness is common as the socket continues to heal. Call your dentist to update your healing progress. Continue with warm salt water rinses and follow all post extraction instructions provided by your dentist including medications. Reduce soreness by taking an anti-inflammatory medications such as acetomeniphen and ibuprofen. Keep up with a balanded diet and adequate vitamins. I hope you find my comments helpful and feel better soon. Thank you for your inquiry.