Not getting a root canal for a lumpy five year old’s gums may affect tooth replacement. Failure to perform a root canal on a five year old child with a lump in the gums may lead to periapical inflammation and periapical abscess of the tooth when the condition worsens. At the same time, periapical abscess may also lead to increased pain, and the inflammation will also erode the bone tissue, leading to the loosening and displacement of the affected tooth and the neighboring teeth, so not doing the treatment may affect the normal tooth replacement. It should be noted that normal root canal treatment will not affect the child’s tooth replacement, and root canal treatment is also a better way to save the replacement of teeth, which has no impact on the child’s health, so when necessary to do timely root canal treatment. It is recommended that children pay attention to maintaining good oral hygiene in daily life, brush and rinse their teeth carefully, and actively seek medical treatment if their teeth are uncomfortable, so as not to delay their condition.