Before revision: A 9-month-old infant with a right lower central incisor about to emerge 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") sequentially appear by emerging through the gums, typically arriving in pairs.
After revision: A 9-month-old infant with a right lower central incisor about to emerge 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.