RESUMO
Many infections of the oral cavity and adjacent structures involve anaerobic bacteria. Most infections involve multiple anaerobes and in many instances facultative organisms. Present study was conducted regarding to clinical aspects and complications of anaerobic bacterial infections in oral cavity. 72 Specimens were taken from oral cavity infections. Routine culture techniques and strict anaerobic techniques were used for isolation and identification of aerobic, facultative and obligatory anaerobic bacteria respectively. Cultures of all specimens were positive. Mono- bacterial and poly bacterial infections were repored in 1/3 and 2/3 of specimens, respectively. More than 65% of isolated organisms, were obligatory anaerobic belonging to the Peptostreptococcus, Prevotella, Fusobacterium Porphyromonas and Bacteriodes as well as facultative and aerobic species include Streptococcus, Staphylococcus interobacteriacea and Actinomes Israelii are also obtained. Many infections of the oral cavity and adjacent structures involve obligatory anaerobic bacteria. Regarding to results of present study, under the anaerobic atmospheric system, obligatory anaerobic bacteria were isolated and identified from clinical specimens of oral cavity infections, especially abscesses