By what age do children typically have a complete set of primary teeth?

Children typically have a complete set of primary teeth by around 24 months of age. During the first few years of life, children experience tooth eruption, which generally begins around six months of age. By the age of two, most children will have all 20 primary teeth (also known as deciduous teeth) that include the incisors, canines, and molars. This timeline is consistent with the developmental milestones of early childhood and is important for parents and caregivers to monitor as it can affect nutrition and speech development.

The other ages listed do not align with the usual dental developmental milestones. Prior to 24 months, most children may have a significant number of teeth but not yet all primary teeth. Options suggesting ages beyond 24 months indicate a delay in tooth eruption, which would be less common but could vary based on individual health factors.