知恵熱

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