Just as children mature at different ages, their teeth and jaws mature at different ages. To be ready for full braces (sometimes known as Phase II treatment), kids generally need to have all of their permanent teeth. Early developers may have all of their permanent teeth (except wisdom teeth) by age 9, while late bloomers may not get them until age 14 or later. On average, girls’ mouths also develop slightly earlier than boys, and they tend to be ready for braces about 6-12 months earlier than normal boys. So don’t worry , for sure one day he will be ready to receive braces.