Crowns are generally recommended for root canal treatment. 1. Because during root canal treatment, the tooth will become abnormally fragile, and the brittleness of the tooth body will increase with age. Without crown restoration in this case, the tooth will be easily fractured, or even splintered, which will seriously affect normal chewing. 2. Moreover, if you do not do crown restoration after root canal treatment, the dentin may be thinned and the filling material may change the color of the tooth, thus affecting the aesthetics, and the patient may not feel confident, which may pose a great threat to his life. Therefore, it is recommended to do crown restoration in time after root canal treatment. Dental canal restoration after root canal treatment can last longer and can protect the tooth, but before doing dental canal restoration, you should do the examination to understand your own situation, and the specifics should be carried out under the guidance of professional physicians.