What is the definition or description of: dental eruptions?

Dental: When teeth grow out of the gingiva and or bone the process is called eruption.

See the long answer: A tooth eruption occurs when it breaks thru the gum and grows into the mouth.

Growing teeth: When teeth come into the mouth through the jawbone where they develop, dentists describe this process as tooth eruption.

Breaking out: When the tooth breaks out from the tissue and is visible.

Teething?: Dental 'eruptions' may be a way of describing the way that teeth become present in the mouth in a young person. When they begin to come through the gum tissue, we say that they are 'erupting' into the mouth.