Cavities can have a certain impact on tooth replacement. Cavities are a chronic progressive destructive disease caused by bacterial infection of the hard tissue of the tooth. If not treated in time, it may further develop, forming pulpitis or even apical periodontitis. Once it reaches the stage of apical periodontitis, it may form a gum abscess, or even swelling. During the process of new teeth eruption, they emerge outward through the position of the old tooth roots by absorbing the roots of the old teeth. If there is severe inflammation in the eruption pathway, it may lead to the destruction of the dental follicle of the new tooth, causing a developmental defect in the enamel of the new tooth. Therefore, it is possible that cavities can affect tooth replacement.