Primary teeth help your child to learn to chew, speak properly and most importantly, these teeth reserve the space in your child’s gums for the eruption of their permanent teeth. Primary teeth start to form in your child’s jawbone before birth. A baby’s first primary tooth usually erupts at about six months of age; however, this can occur as early as birth or as late as your child’s first birthday.
The average child has a full set of 20 primary teeth by the age of two to three years. Your child’s first visit to the dentist should be within six months of the eruption of their first tooth, or by their first birthday.