Dental device comprising at least: - an implant type support configured to be constrained on a bone portion of a user and defining a constraint axis, - connection means configured to operatively interconnect said support and a dental prosthesis in a fixed manner along said constraint axis, defining at least one constraint configuration wherein said support and said prosthesis are firmly linked, and include: - a graft comprising at least a first portion extending mainly along a direction parallel to said constraint axis, - a body comprising a guide extending along a transverse or oblique direction with respect to said constraint axis and a cavity extending in a direction parallel to said constraint axis and adapted to house said first portion at least when said connection means are in said constraint configuration, - obstruction means comprising a slider placed in a compliant way within said guide, - one of the said graft and said body being constrained to said support and the other between said graft and said body being configured to be constrained to said prosthesis, - said first portion comprising a hole substantially aligned with said guide, when said connection means are in constrained configuration, in such a way as to allow the insertion of said slider within said hole, - said obstruction means being configured to produce a force on said slider capable of moving said slider along said guide in such a way that at least part of said slider enters hole, when said connection means form said constraint configuration, so as to obstruct the reciprocal movement between said graft and said body and said device being characterized by that - said force realized on said slider is a magnetic force of attraction or repulsion and said obstruction means comprise a component constrained within said body in such a way as to be facing, or part of, said guide and configured to realize said magnetic force of mutual attraction or repulsion with said slider so that, when said constraining means are in said constraining configuration, said slider is dragged towards or away from said component, it is inserted into said hole and obstructs the reciprocal movement between said graft and said body. - an implant type support configured to be constrained on a bone portion of a user and defining a constraint axis, - connection means configured to operatively interconnect said support and a dental prosthesis in a fixed manner along said constraint axis, defining at least one constraint configuration wherein said support and said prosthesis are firmly linked, and include: - a graft comprising at least a first portion extending mainly along a direction parallel to said constraint axis, - a body comprising a guide extending along a transverse or oblique direction with respect to said constraint axis and a cavity extending in a direction parallel to said constraint axis and adapted to house said first portion at least when said connection means are in said constraint configuration, - obstruction means comprising a slider placed in a compliant way within said guide, - a graft comprising at least a first portion extending mainly along a direction parallel to said constraint axis, - a body comprising a guide extending along a transverse or oblique direction with respect to said constraint axis and a cavity extending in a direction parallel to said constraint axis and adapted to house said first portion at least when said connection means are in said constraint configuration, - obstruction means comprising a slider placed in a compliant way within said guide, - one of the said graft and said body being constrained to said support and the other between said graft and said body being configured to be constrained to said prosthesis, - said first portion comprising a hole substantially aligned with said guide, when said connection means are in constrained configuration, in such a way as to allow the insertion of said slider within said hole, - said obstruction means being configured to produce a force on said slider capable of moving said slider along said guide in such a way that at least part of said slider enters hole, when said connection means form said constraint configuration, so as to obstruct the reciprocal movement between said graft and said body - said force realized on said slider is a magnetic force of attraction or repulsion and said obstruction means comprise a component constrained within said body in such a way as to be facing, or part of, said guide and configured to realize said magnetic force of mutual attraction or repulsion with said slider so that, when said constraining means are in said constraining configuration, said slider is dragged towards or away from said component, it is inserted into said hole and obstructs the reciprocal movement between said graft and said body.