Final answer:
Chronic gingivitis can lead to periodontitis and dental caries if untreated.
Step-by-step explanation:
Chronic gingivitis is inflammation of the gums caused by chronic plaque buildup. If left untreated, it can progress to periodontitis, a more serious condition. In periodontitis, the gums recede, exposing the tooth below the crown, which can lead to dental caries or cavities. Additionally, the bacteria in the gingival space can erode the cementum, leading to tooth loss. It's important to maintain good dental hygiene to prevent chronic gingivitis from progressing to more severe conditions.