 The aim of this study is to evaluate the nature of the change in oral and gut bacterial resistance profiles after antibiotic therapy for a surgical procedure in two groups. The intervention group will receive a course of amoxicillin and analgesics after surgical extraction and have bacterial samples taken from saliva, tongue coatings and stool samples at four appointments over a period of six months. This will be compared to the control group which receive only analgesics after the surgical extraction. 