The shiny white color on the dental film indicates that the substance is of high density, which may be the tooth itself, but also dental materials, artificial restorations, residual in the local oral apparatus and other objects, requiring specific analysis of the specific problem. 1, the tooth itself: the crown and the root part of the tooth are white and shiny, where the enamel part is more obvious than the other parts, while the inner color of the tooth is darker, generally The inner part of the tooth is darker and generally belongs to the pulp chamber structure; 2. Dental materials: such as root-filling paste, cementum tip, zinc phosphate cementum, silver amalgam, etc., which will also appear as shiny white on the dental film. Taking the affected tooth after root canal treatment as an example, dental radiographs are usually required routinely to observe whether the root canal filling is in place and whether there is any underfill, etc. If the imaging examination suggests that the requirements are not met, it is usually necessary to refill the root canal; 3. Artificial restorations: such as metal inlays, porcelain fused metal full crowns, cast metal crowns, and implants in the alveolar bone, etc., will also appear as shiny white on the dental film; 4. Residual oral instruments in the local area: for example, root canal fractures occur during root canal treatment and are left in the pulp chamber without being removed For example, if the root canal is fractured during root canal treatment and left in the pulp cavity without being removed, or even pushed out of the apical hole, the fractured root canal file can be found to be shiny white during the dental radiograph, and the specific location, size and length can also be seen.