牙龈出血是成年人和老年人的常见病和多发病。患有牙龈出血的人,轻者在刷牙、咀嚼食物及吸吮时流血;重者在安静状态下也会流血不止。长期的轻度牙龈出血对健康人影响不大,但对体弱者却是造成轻度贫血的一个主要原因。此外,牙龈出血还会产生口臭等症状。口腔中细菌种类繁多,数量也极大,加上口腔中温度和湿度都适合细菌的生长和繁殖,因此,牙龈出血的人,其口腔中细菌比健康人多得多。口腔向下进入咽部,再向下入消化道;从咽部向上到鼻腔,然后到达各个鼻窦,通过鼻泪管可进入眼睛;从咽鼓管可进入中耳。细菌一般由这些通道进入上述部位。当人体的抵抗 Gingival bleeding is a common and frequently occurring disease in adults and the elderly. People with bleeding gums, light in the brushing, chewing food and sucking bleeding; severe cases will also bleed more than. Long-term mild gingival bleeding has little effect on healthy people, but it is one of the main causes of mild anemia in the infirm. In addition, bleeding gums can also produce symptoms such as bad breath. There are many kinds of bacteria in the mouth, the quantity is also great, and the temperature and humidity in the mouth are suitable for the growth and reproduction of the bacteria. Therefore, bleeding gums in the oral cavity have much more bacteria in the oral cavity than healthy people. The mouth down into the pharynx, and then down into the digestive tract; up from the pharynx to the nasal cavity, and then reach the sinuses, through the nasolacrimal duct can enter the eyes; from the Eustachian tube can enter the middle ear. Bacteria generally enter these areas from these channels. When the body's resistance