The denture base supports artificial teeth and effects the transfer of occlusal forces to supporting oral structures.Although its primary purpose is related to masticatory function,the denture base also may add to the cosmetic effect of the replacement.

    The requirements for an ideal denture base

    1,Dense,nonirritation surface capable of receiving and maintaining a good finish 

    2,Thermal conductivity

    3,Low specific gravity;lightness in the mouth

    4,sufficient strength;resistance to fracture or distortion

    5,Self-cleansing factor;or easily kept clean

    6,Esthetic acceptability,low cost

    7,Potential for future relining

    8,Accuracy of adaptation to the tissues

• Indirect retainers
• Overdentures