A dental implant comprising: a substantially cylindrical hollow base member comprising a wall defining a space in said substantially cylindrical hollow base member; an abutment; an implant-abutment junction portion at one end of said base member to retain said abutment to said base member, so that said abutment is able to move within a predetermined distance along an axial direction of said base member; and a first cushion mounted between said abutment and said base member for providing a resistance force when said abutment is pressed to move relatively toward said base member and providing a bouncing back force when said abutment is released from said pressing, wherein the first cushion is a single layer or a multilayer design of flat plate., wherein said abutment comprises a receiving part for receiving a dental prosthesis and a connecting part, wherein said implant-abutment junction portion has an axial hole and said connecting part of said abutment has a cylindrical rod portion having a diameter corresponding to said axial hole and an enlarged end extending from said cylindrical rod portion, wherein said cylindrical rod portion is slidably received in said axial hole of said implant-abutment junction portion with said enlarged end protruding from one end of said axial hole, wherein said implant-abutment junction portion is a separate part, preventing said abutment from escaping said implant-abutment junction portion, and said first cushion is a elastomer and is sandwiched between said enlarged end of said connecting part of said abutment and said base member characterized in that the substantially cylindrical hollow base member has a plurality of through-thickness holes communicating said space with an outer surface of said wall; said substantially cylindrical hollow base member is provided with a sharpened close end opposite to said implant-abutment-junction portion, preferably said sharpened close end is threaded into a bottom end of said substantially cylindrical hollow base member; said implant-abutment junction portion is threadedly connected to said one end of said base member, and that another end of said cylindrical rod portion protruding from the other end of said axial hole. a substantially cylindrical hollow base member comprising a wall defining a space in said substantially cylindrical hollow base member; an abutment; an implant-abutment junction portion at one end of said base member to retain said abutment to said base member, so that said abutment is able to move within a predetermined distance along an axial direction of said base member; and a first cushion mounted between said abutment and said base member for providing a resistance force when said abutment is pressed to move relatively toward said base member and providing a bouncing back force when said abutment is released from said pressing, wherein the first cushion is a single layer or a multilayer design of flat plate., wherein said abutment comprises a receiving part for receiving a dental prosthesis and a connecting part, wherein said implant-abutment junction portion has an axial hole and said connecting part of said abutment has a cylindrical rod portion having a diameter corresponding to said axial hole and an enlarged end extending from said cylindrical rod portion, wherein said cylindrical rod portion is slidably received in said axial hole of said implant-abutment junction portion with said enlarged end protruding from one end of said axial hole, wherein said implant-abutment junction portion is a separate part, preventing said abutment from escaping said implant-abutment junction portion, and said first cushion is a elastomer and is sandwiched between said enlarged end of said connecting part of said abutment and said base member characterized in that the substantially cylindrical hollow base member has a plurality of through-thickness holes communicating said space with an outer surface of said wall; said substantially cylindrical hollow base member is provided with a sharpened close end opposite to said implant-abutment-junction portion, preferably said sharpened close end is threaded into a bottom end of said substantially cylindrical hollow base member; said implant-abutment junction portion is threadedly connected to said one end of said base member, and that another end of said cylindrical rod portion protruding from the other end of said axial hole.