目的建立牙髓牙本质复合体体外培养模型。
Objective To establish an in vitro culture model of the dentine-pulp complex.
目的：研究血管活性肠肽(VIP)在牙髓牙本质复合体中的表达，探讨其功能。
AIM: To study the expression of vasoactive intestinal polypeptide (VIP) in dental pulp-dentine complex of human premolar and its function.
目的：研究人前磨牙牙髓牙本质复合体的增龄性变化，探讨牙衰老和老年牙病的形态学基础。
Objective: to provide morphological basis for dental aging and senile teeth diseases and to study age-related changes of pulp-dentin complex of human premolar.
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