There is a hole in the occlusal surface of the dental implant, which should be the screw hole left by the screw retention, and it can be filled without excessive worry. Dental implant mainly consists of three parts: implant, abutment and crown. The crown can be connected to the implant by two ways: bonding and screwing, the former will not leave a hole in the occlusal surface, while the latter will leave a hole in the occlusal surface. Screw-retention is to fix the abutment and crown together, and then screw it to the implant, so the crown will leave a screw channel on the occlusal surface, which can be filled with resin at a later stage without worrying about it. Dental implants are currently the preferred way of dental defects, the technology has been very mature, but the current implant brand and series of complex and diverse, different oral conditions, the choice may vary, it is recommended to go to the regular hospital stomatology department.