【摘要】 用四种粘接材料对高频铸造桩冠进行粘固，并测其脱位张力值。以评价它们对桩冠固位力的影响。结果表明，磷酸锌粘固剂所获粘接力最大。更多还原

【Abstract】 Four different cements were used to retain casted pet.The force needed to disledgethe post was tested,and the effects of these cements evaluated.The result shows that zinc phos-phate cement is the most retentive cement.更多还原