One of the most common conditions affecting children's teeth are dental abscesses. Children with severe cavities often have teeth that abscess. Abscess of lower left primary tooth. NOTE the tissue swelling on the tooth. Radiograph of abscess on middle tooth. Note the dark outline of the short root. Dental abscesses often start out as large cavities on the teeth. Once the cavity invades the pulp of the tooth the infection spreads to the bone. At that point the tooth is no longer salvageable. A dental abscess is a swelling of the tissue around an infected tooth. The following symptoms may result from a dental abscess. Children can often present with facial swelling, fever, altered eating habits, poor concentration, poor sleep patterns, breathing problems, and general malaise. The treatment that is always recommended is antibiotics and extraction.