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汉语拼音：rǔ yá

1.又称乳齿。人和多数哺乳动物幼年期所生的牙齿。如人的乳牙在婴儿出生后6－9个月之间开始生长，共20个。6－7岁乳牙开始逐渐脱落，换生恒牙。通称奶牙。

1. 又称乳齿。人和多数哺乳动物幼年期所生的牙齿。如人的乳牙在婴儿出生后6－9个月之间开始生长，共20个。6－7岁乳牙开始逐渐脱落，换生恒牙。通称奶牙。

• When milk-teeth are trying to push their way through, they work the infant into a fever.

  当乳牙要长出来的时候，它会使婴儿狂躁兴奋。

• Results Dentigerous cyst is one of the main causes of embedded teeth, only second to retained deciduous teeth, dental crowding.

  结果含牙囊肿是前牙骨埋的一个重要因素，仅次于乳牙滞留、早失和间隙不足。

• His guardian reported he had undergone traditional extraction of his primary teeth as a child whilst in Africa.

  其监护人报告，他经历了传统提取乳牙他还是个孩子，而在非洲。

• But dentists say a baby's gums and early teeth should be cleaned after each feeding. Use a cloth with a little warm water.

  但牙医指出，每次喂奶后，婴儿的牙龈和乳牙都应该用醮点温水的布清洁干净。

• When deciduous teeth began to sprout, submaxilla starts to search for physical position.

  乳牙初萌下颌开始探索其生理位置。

• Objective: To evaluate the clinical efficacy and safety of a new chemo-mechanical method for the removal of primary dental caries.

  目的：评价伢典化学机械去龋法治疗乳牙龋齿的有效性和安全性。

• While you were pregnant, your baby developed tooth buds, the foundation for baby teeth (also called milk teeth).

  在你怀孕的时候，宝宝先发育牙蕾，然后发展为乳牙雏形。

• Her bones are like those of a ten-year-old, but she still has her baby teeth.

  她的骨骼像10岁的孩子大的，但她依然没有换掉乳牙。

• Objective This study observed plaque distribution on primary dentition to offer more scientific toothbrushing instruction.

  目的观察分析全口乳牙的菌斑附着状况。