A one-week plug before filling may be a cavity near the pulp, which is medically pacified for a week and then filled, or the tooth is under treatment, which is sealed for a week for root canal disinfection and then filled. One week before filling the drug can be divided into two cases, one is deep caries cavity near the pulp, after removing the net decay of the bottom of the cavity near the pulp, pulp sensitivity, zinc oxide cushion appeasement for a week, there is an improvement can be retained part of the material and then filling. The other is the affected tooth is in the root canal treatment, sealing one week for root canal disinfection after root canal filling, this step is essential. 1. Deep caries cavity near the pulp, after removing the decayed material, the bottom of the cavity is close to the pulp cavity, which is sensitive to hot and cold stimuli, so it is necessary to pad the bottom of the cavity for one week to observe whether there is any nerve pain, such as the need for root canal treatment for pain, and retain some of the material for formal filling if no symptoms appear. 2. The affected tooth needs to be sealed for one week during the root canal treatment and then the root canal is filled. Root canal treatment should first open the pulp, explore the mouth of the root canal, extract the pulp, clean up the root canal, prepare the root canal, seal the medicine, introduce the calcium hydroxide paste, zinc oxide temporary sealing, one week after the follow-up, and then carry out the root canal preparation, seal the calcium hydroxide for one week, and then carry out the root canal filling after one week. The purpose of sealing calcium hydroxide for one week during root canal treatment is to inhibit bacterial growth in the root canal.