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美的风采源于迷人的微笑。洁白整齐的牙齿令您笑得自信、笑得舒心、笑得回味无穷! 牙齿的奥妙牙齿由牙冠、牙根和牙颈三部分组成。由牙釉质覆盖、暴露于口腔的部分叫牙冠;由牙骨质覆盖埋于牙槽窝内的部分为牙根;牙冠和牙根交界部分为牙颈。牙内为一空腔,内含牙髓。牙冠的形态各异,前牙的切缘用于切割食物,后牙的咬合面有尖、窝结构,由于研磨食物,尖牙的锐利牙尖用以撕裂食物。牙根的数目形态因牙的部位、功能不同而异。
Beautiful style comes from a charming smile. Neat and tidy teeth makes you smile with confidence, laughter, laughter aftertaste! The mystery of the teeth Dental crown, root and the neck consists of three parts. Covered by enamel, the part exposed to the mouth is called the crown; the part buried in the socket by the cementum is the root; the junction of the crown and the root is the neck of the tooth. The tooth is a cavity, containing the pulp. The shape of the crown varies. The incisors of the anterior teeth are used to cut the food. The occlusal surfaces of the posterior teeth have a sharp, dimpled structure. The sharpened sharp cusps of the canine are used to tear the food due to grinding of the food. The number of root morphology due to the location of the teeth, different functions.