BY THE NUMBERS

 
 

Give us a big grin Something to smile about

 

It takes 43 muscles to frown, but only 17 to smile. That makes it 2.5 times easier to smile.

So tell your little ones to show off their pearly whites during "National Smile Week," celebrated annually during the second week of August.

Here is a look at a healthy looking smile and good teeth-by the numbers.

6 Months, the usual age baby’s first tooth appears. 1 Year, the age by which babies should have visited the dentist for the first time. 20 The number of deciduous (baby) teeth. 3 Years, the average age for all 20 baby teeth to be in. 20 Percent, the percentage of children who have tooth decay by age 3. 2 Years, the age to begin using a fluoride toothpaste, a pea-sized amount is recommended. 4 Years, the age by which most children have stopped sucking their thumb. 6 Years, the average age for baby teeth to begin falling out. $1.60 Average gift given by the tooth fairy in 2002, according to a survey by Delta Dental. 32 The number of permanent teeth, equally divided between the upper and lower teeth. 8 Years, the age by which most children are able to brush without help. 9 Years, the age by which most children have enough dexterity to floss without help. 1956 The year the state of Illinois began adding fluoride to Chicago water. 8 Years, the earliest age at which children get braces. 14 Years, the age by which most children get braces. 18 Months, the minimum time most children wear braces. 30 Months, the maximum time most children wear braces. 18 The average age for wisdom teeth to grow in. Nicole Caputo

 

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