The advantages of high inlay crowns include good performance, prevention of fracture and restoration of occlusal contact, as follows. 1. Good performance: Porcelain inlays and resin inlays have better corrosion resistance, abrasion resistance, compressive strength and less edge shrinkage compared to resin and glass ionomer fillings. 2. Can prevent tooth fracture: when the defect is large, the tooth wall has the possibility of fracture, high inlays cover the jaw surface, can reduce the risk of tooth fracture, protect the remaining dental tissue. 3. Restore occlusal contact: For large defects in the jaw, high onlays can repair the shape of the tooth cusp and restore the shape of the jaw and occlusal contact. It is recommended to visit the hospital and choose the appropriate treatment with the help of the doctor.