Odontogenic infections have plagued humankind for as long as our species has existed and are one of the most frequently occurring infectious processes known to both antiquity and present day health practice.The bacteriology of odontogenic infection has been studied widely and various forms of aerobic and anaerobic micro-organisms reflective of normal oral flora have been isolated.The microbiological environment has been polluted with bacteria that are resistant to many antibiotics, this alteration in antibiotic sensitivity is now the expected result of wide spread use of antibiotics. The present book helps to determine which antibiotics should be prescribed in the first place in patients with odontogenic infection, and to establish whether different antibiotic regimens are indicated according to microorganisms that are involved.