According to the progress of the antibiotic medicine, the severe infection case is decreasing recently. We recently experienced a case of temporal fossa abscess caused by periapical periodontitis the upper left side of the second molar. A 79-year-old woman visited to Showa University Dental Hospital complaining of the painful swelling at the left side of the temporal and trismus. The routine blood test exhibited a severe inflammation. We performed drainage treatment at temporal skin and normal oral bacterial flora was detected by the bacteriological examination. Under treatment included the administration of antibiotics, the inflammation healed without serious complication and she recovered completely.
 Kasahara, K., Ogawa, C., Matsuzaka, K., Yamamura, T., Takano, M., Saitou, C. and Shibahara, T. (2015) A Case of Infratemporal Fossa Abscess with Signs of Chronic Maxillary Osteomyelitis. The Bulletin of Tokyo Dental College, 56, 121-129.
 Leventhal, D. and Schwartz, D.N. (2008) Infratemporal Fossa Abscess: Complication of Dental Injection. Archives of Otolaryngology—Head & Neck Surgery, 134, 551-553.
 Lewis, M.A.O., MacFarlane, T.W. and McGowan, D.A. (1986) Quantitative Bacteriology of Acute Dento-Alveolar Abscesses. Journal of Medical Microbiology, 21, 101-104.
 Brook, I., Frazier, E.H. and Gher, M.E. (1991) Aerobic and Anaerobic Microbiology of Periapical Abscess. Oral Microbiology and Immunology, 6, 123-125.