The blood vessels, nerves, and tissue that keep a tooth healthy and alive are located in the tooth's pulp, which is protected by the outer enamel and tooth structure. Sometimes the pulp can become infected. The infected pulp can be removed with a pulpotomy. A medicated dressing is then placed in the tooth chamber to prevent further infection and to promote the healing of the remaining pulp. The chamber is then sealed. Because this procedure is often performed on deciduous (baby) teeth, it is sometimes referred to as a baby root canal.