
thumb|A 9-month-old infant with a right lower central incisor about to emerge thumb|A 9-month-old infant with a visible right lower central incisor Teething is the process by which an infant's first teeth (the deciduous teeth, often called "baby teeth" or "milk 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 so
thumb|A 9-month-old infant with a right lower central incisor about to emerge thumb|A 9-month-old infant with a visible right lower central incisor Teething is the process by which an infant's first teeth (the deciduous teeth, often called "baby teeth" or "milk 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.
Teething may cause a slightly elevated temperature, but not rising into the fever range of greater than . Higher temperatures during teething are due to some form of infection, such as a herpes virus, initial infection of which is extremely widespread among children of teething age.
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