Combined with proper home care and regular dental visits, sealants are extremely effective in preventing tooth decay. They will also potentially save you a lot of time in a dental chair later on, if your teeth start to require fillings, crowns, or even root canals.
The average age is 12, but this does not mean that all girls start at the same age. A girl can start her period anytime between the ages of eight and 15. Usually, the first period starts about two years after breasts first start to grow. If a girl has not had her first period by age 15, or if it has been more than two to three years since breast growth started, she should see a doctor.
The earliest physical change of puberty for girls is usually breast development, which most often begins around 10 or 11 years. But it's perfectly normal for breast development to start anytime between the ages of 8 and 13.A girl's first menstrual period usually occurs about 2 years after breast development begins.Boys begin their development on average around age 11 or 12, but it's also normal to begin anytime between the ages of 9 and 15.ut it's perfectly normal for breast development to start anytime between the ages of 8 and 13. A girl's first menstrual period usually occurs about 2 years after breast development begins.