Methods On the base of root cavity therapy,the clean and dry dental pulp with tampon was performed with closed of clove oil and cadmia.The permanent filling was taken when symptom disappeared.

• 方法在根管治疗的基础上,洗髓针上捻消毒棉尖,浸生理盐水轻擦洗根管,然后再用干棉捻擦拭,用干燥消毒棉球置于髓室内,以丁香油氧化锌膏封闭窝洞,如症状消失,改用永久材料充填。