尽管冠周炎是常见的,但对冠周炎作细菌学研究的文章却很少。Kay对392例急性或亚急性第三磨牙冠周感染的患者进行了微生物菌群的研究。他发现混合感染菌群以草绿色链球菌为主。仅有两例是凝固酶阳性的葡萄球菌感染。一般从对侧未受累的第三磨牙标本中可得到相似的微生物菌群。有时,冠周炎可进一步发展成急性坏死性龈炎或口炎。这时的微生物包括密螺旋体、梭形杆 Although pericoronitis is common, there are few articles on peritomyitis for bacteriological studies. Kay conducted a study of microbial flora in 392 patients with acute or subacute third molar crown infections. He found that the mixed infection group mainly Streptococcus viridans. Only two cases were coagulase-positive staphylococcal infections. A similar microbial flora is generally obtained from the third molar specimen that is not affected by the contralateral side. Pericoronitis can sometimes develop into acute necrotic gingivitis or stomatitis. Microorganisms at this time include Treponema and Fusiform rods