Teething

Teething is the process by which an infant's first teeth appear by emerging through the gums, typically arriving in pairs. The mandibular central incisors are the first primary teeth to erupt, usually between 6 and 10 months of age, causing discomfort and pain to the infant. It can take several years for all 20 teeth to complete the tooth eruption.

Though the process of teething is sometimes referred to as "cutting teeth", when teeth emerge through the gums they do not cut through the flesh.
Instead, hormones are released within the body that cause some cells in the gums to die and separate, allowing the teeth to come through.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 4.0

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