Eruption hematomas are simply eruption cysts which have a very dark color. Shortly before the underlying tooth erupts into the mouth. They can appear as early as 5 months of age, or as late as 12 years of age. An eruption cyst develops when fluid accumulates between an erupting tooth and the overlying layer of enamel epithelium. An eruption cyst is really a dentigerous cyst which appears in oral soft tissue.
Most eruption cysts disappear spontaneously as soon as the underlying tooth erupts into the mouth.
No treatment is usually needed, since most of these cysts heal within 5 weeks. Giving an infant a cold teething ring may help alleviate some of the discomfort associated with eruption cysts. When a child experiences feeding problems or severe discomfort as a result of eruption cysts, it may be necessary to have them incised or surgically removed. The cysts were causing some feeding problems, as well as discomfort. The problem was treated surgically by incising the eruption cysts, and removing part of the overlying cystic tissue.