Resin restoration is a commonly used restorative dentistry method, but it has certain indications, not all patients can restore the defective dentition by resin restoration, only the suitable treatment for the patient is good. Resin restoration is suitable for those who have a small range of tooth tissue loss caused by caries, wedge-shaped defect, trauma, etc. The advantages are realistic and beautiful color, simple and quick restoration, and operation in the mouth, which can save more healthy tooth tissue and thus better restore the shape and chewing function of teeth. The disadvantage of resin restorations is that the material may discolor and produce hyperpigmentation, which affects the aesthetics. The strength of resin material is lower than that of porcelain crown restoration, so for large area of tooth defects, as well as teeth after root canal treatment, or even subgingival tooth defects, it is not suitable for resin restoration to fill the affected teeth, and other restorative methods such as inlays and porcelain crown restoration may be required. Therefore, it is recommended to go to the dentist to choose the appropriate restoration method according to the doctor’s judgment. Usually, resin restoration is a good solution for restoration of tooth defects with good indications.