Teething bars are available when babies start teething, usually around 4-10 months after birth. During the eruption of baby teeth, the gums will be swollen, painful and uncomfortable, and the baby may have more drooling, like to bite things, chew fingers, and irritable and irritable. At this time, you can start using teething sticks, which can effectively relieve the discomfort of the gums during the eruption of teeth, strengthen the dental bed, and at the same time exercise the baby’s grasping ability and chewing ability. If you use a food-based teething stick, you can also properly supplement nutrition. Teething bars should be supervised to avoid choking and choking. The length of the teething stick should be appropriate, the hardness should be moderate, and it should be replaced in time to avoid too hard or too soft to prevent damage to the gums or failure to achieve the desired effect. During the teething period, babies need to pay attention to calcium supplementation. You can take cod liver oil and vitamin D in the right amount, and you should get more sunlight in general.