When do boys finish replacing their teeth?

Tooth replacement is a stage that everyone needs to go through. Although there will be toothache when replacing teeth, it will not last long. It will generally disappear in a few days. After the teeth grow out again, everything will return to normal. Then you just need to develop good living habits and keep your teeth clean. So, how long does it take for children to complete their tooth replacement?

I believe everyone knows that human teeth have two stages: deciduous teeth and permanent teeth. The deciduous teeth period lasts throughout the infancy and childhood stages, while the permanent teeth that replace the deciduous teeth can almost accompany a person throughout his or her entire life. There are 20 deciduous teeth, which usually start to erupt around 6 months old and are fully grown at 2-3 years old. There are 28-32 permanent teeth (the number of wisdom teeth is 0-4), which usually start to erupt around 6 years old and 28 are fully grown at 12-13 years old (wisdom teeth vary from person to person). Therefore, the tooth replacement period is usually when the child is 6-12 years old.

There are certain rules for tooth replacement, which can be simply described as "a certain time, a certain order, left-right symmetry, lower first then upper". Left-right symmetry and lower first then upper refers to teeth with the same name. The physiological shedding of the first deciduous tooth usually occurs around the age of 6, but it can also occur as early as 4 years old, or as late as 7-8 years old, so there is no need to worry. Naturally fallen deciduous teeth have no roots and the fallen surface appears eroded. Parents should pay attention to observe and not confuse them with broken roots of deciduous teeth.

There are two different opinions about which permanent tooth a child will grow first. One is that the first permanent molar that usually grows around the age of 6 grows close to the last deciduous molar, called the sixth-year molar, and erupts slightly earlier than or at the same time as the lower central incisor. Another theory is that the first two front teeth to be replaced are in the middle of the lower row. The dentist said that this may be different for each child. Then, children grow upper central incisors and lower lateral incisors when they are 7-8 years old, upper lateral incisors when they are 8-9 years old, first and second canines when they are 9-12 years old, and permanent canines when they are 10-12 years old.