Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单
| | A | | 1 | | | B | | b | | | C | | 人才招聘 | | | D | | | | | E | | 电子 | | | F | | f | | | G | | 克 | | | H | | h | | | I | | 我 | | | J | | j | | | K | | k | | | L | | 升 | | | M | | 米 | |
| | N | | n | | | O | | o | | | P | | p | | | Q | |常见问题 | | | R | | 研究 | | | S | | | | | T | | 吨 | | | U | | u | | | V | | v | | | W | | 瓦特 | | | X | | x | | | Y | | y | |
Teething初期
The first teeth (also known as milk teeth or deciduous teeth) have usually developed before your child is born.第一牙（也称为乳牙或乳牙）通常发达之前，您的孩子出生。
They normally start to break through the gum from at around six to nine months old.他们通常开始冲破口香糖从左右， 6至9个月岁。 Usually the bottom front teeth come through first, followed by the top front teeth (central incisors) and then the top and bottom incisors either side (lateral incisors).通常底部的前牙来，通过第一，其次是顶部的前牙（中央门齿） ，然后在顶部和底部的门牙两侧（横向门齿） 。 Most children will have around eight teeth by their first birthday, although this is just an average.大多数儿童将有大约8牙齿，他们第一个生日，虽然这只是一个平均水平。
The first molars (back teeth) start to come through at about 12 to 14 months, followed by the canines (next to the lateral incisors) at 16-18 months and finally the second molars at 18-30 months.第一磨牙（回牙）开始来通过在约12至14个月，其次是犬（旁边的侧门牙）在16-18个月，最后第二大臼齿在18-30个月。 The full set of first teeth is usually through by the age of two and a half years.全套第一牙齿通常是通过由年龄两年半的时间。
Teething can start as early a 3 months and continue to 3 years old.初期，就可以开始，早在1 3个月内，并继续至3岁。
Rarely, your child may be born with one or two teeth or will have a tooth emerge within the first few weeks of life.很少，您的孩子可能出生与一个或两个牙齿或将有牙齿内部出现的前几个星期的生活。 This does not give cause for concern unless the teeth interfere with feeding.这并不令人担忧，除非牙齿干预供餐。
