So oral bacteria might increase the risk of esophageal cancer, especially porphyromonas gingivalis, which has been detected in cancerous tissues.

口腔细菌还可能会增加食管癌的风险，尤其是牙龈卟啉单胞菌，其已在癌组织中被检测到。

The major genera with the largest representation in the oral cavities include: streptococcus, prevotella, haemophilus, rothia, veillonella, neisseria, fusobacterium, and porphyromonas.

口腔中的微生物主要包括以下几个大属：链球菌属、普氏菌属、嗜血杆菌属、罗氏菌属、韦荣氏球菌属、奈瑟氏菌属、梭杆菌属与卟啉单胞菌属。