Dentigerous cyst do have a potential to become aggressive though. If these cysts increase in size, it can lead to expansion of bone, leading to a visible extra-oral swelling and subsequent facial asymmetry. More importantly, it can increase in size to such an extent that it can eventually displace adjacent teeth, thus causing a lot of pain and discomfort. In some cases - especially when the cyst is very severe, it can even take up the entire angle of the mandible, and cause it to become hollowed out, thus making it very weak and compromised. If the cyst increases in size to an extent where it does not lead to any extra-oral symptoms, then it is usually asymptomatic and painless, unless it becomes infected.
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