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当乳牙发生急性化脓性牙髓炎,牙髓(牙神经)发生坏死→坏疽(腐烂变质)之后,口腔中的各种细菌极易向牙根(尖)周围方向发展,蔓延扩散。尤其是龋洞口被食物堵塞时,或者孩子处于疲劳状态,抵抗力低下时,例如孩子患感冒时,死掉牙神经的乳牙神经管道里的各种细菌,尤其是厌氧菌就会乘机兴风作浪,引发乳牙根(尖)周围的急性炎症,使孩子遭受新一轮,更加严重剧烈,持续不间断的强烈牙痛。除疼痛外,患处的牙齿松动,会长高浮动,上下牙齿相对台时,一触(碰)就加重疼痛,孩子因怕痛而拒食。再翻看孩子的嘴唇,颊侧患牙处的牙龈(转折处的黏膜)会出现红肿(充血肿胀),轻轻触摸即可感到明显压痛。此时,不少的病例还可引起发烧,孩子的体温可在37.5℃～38.5℃左右,血常规检查白血球可增高9000/mm~3～12000/mm~3。
When deciduous pulpitis occurs in primary deciduous teeth and necrosis → gangrene (decay and deterioration) occur in dental pulp (tooth nerve), the various bacteria in the oral cavity can easily develop around the tooth root (tip) and spread. Especially when the cavity of the caries is blocked by food, or when the child is in a state of fatigue and the immunity is low, such as when the child has a cold, all kinds of bacteria in the neural tube of the deciduous teeth that die the tooth nerve, especially the anaerobic bacteria, Acute inflammation around the root of the baby's teeth (tip) causes the child to suffer a new round of intense, intense and persistent toothache. In addition to pain, the affected area of the teeth loose, president of the high floating, when the teeth relative to the stage, a touch (touch) to aggravate the pain, the child refused to eat due to fear of pain. Then look at the child's lips, the buccal side of the gums at the gums (turning point mucosa) will appear inflamed (congestion and swelling), gently touch can feel significant tenderness. At this point, many cases can also cause fever, the child's body temperature can be 37.5 ℃ ~ 38.5 ℃ or so, blood test white blood cells can be increased 9000 / mm ~ 3 ~ 12000 / mm ~ 3.