Objective:To investigate the expression of Toll like receptor 4(TLR4) and the role of TLR4 in rat normal dental pulp and periodontium.

• 目的:研究大鼠正常牙髓和牙周组织中炎症信号受体TLR4表达特点,探讨其在健康牙髓及牙周组织天然免疫防御中的可能作用。