The difference between dental inlays and crowns is mainly due to different indications and different operation methods. 1. Inlays: Inlays are mainly suitable for patients whose teeth are partially defective due to dental caries and other dental diseases, but the pulp is still healthy and the remaining volume of the affected tooth is large. The treatment has some similarity with dental filling, mainly embedding gold alloy inlay, resin inlay, etc. into the defective part of the patient’s teeth, so as to restore the normal function of the teeth, the height of the patient’s teeth, the thickness of the wall of the teeth, etc. There are certain requirements for the patient. 2. Crowns: Crowns are generally applicable to patients with any tooth loss, but due to the relatively high cost of treatment, they are generally not used when the patient’s tooth loss can be treated with fillings, inlays, and other means. Meanwhile, for patients with caries and other conditions that lead to pulp necrosis, crowns are usually needed to maintain the normal function of the tooth. This treatment is mainly through the appropriate thinning of the patient’s affected teeth, followed by the use of all-ceramic crowns, porcelain crowns, etc. similar to the color of the patient’s teeth on the affected teeth, so as to restore the patient’s normal masticatory function. To summarize, there is a difference between dental inlay and dental crown, generally the symptoms of mild tooth loss can be treated by inlay, while serious patients need to be treated by dental crown.