Dental device comprising at least: - a base defining a main axis and including at least a first portion and a second portion , one of which is configured to be constrained directly or indirectly on of an osseous portion of a user and the other being configured to be constrained to one or more teeth , - constraint means defining at least one constraint configuration wherein said first portion and said second portion are mutually constrained, a rest configuration wherein said first portion and said second portion are separable at least along said main axis , and comprising at least: - a wedge-shaped slider comprising at least partly ferromagnetic material and movable along said main axis in such a way as to determine, on the basis of its positioning, said rest configuration and said constraint configuration, - a movable element at least partially counter-shaped to said slider and expandable radially with respect to said main axis when pushed by said slider in said constraint configuration, and - an obstacle configured to interfere with said movable element when said constraining means are in a constraining configuration in such a way as to block the reciprocal translation of said portions along said main axis , - said slider and said movable element being arranged on said first portion and said obstacle being arranged on said second portion , and said device being characterized in that - said slider includes a permanent magnet. - a base defining a main axis and including at least a first portion and a second portion , one of which is configured to be constrained directly or indirectly on of an osseous portion of a user and the other being configured to be constrained to one or more teeth , - constraint means defining at least one constraint configuration wherein said first portion and said second portion are mutually constrained, a rest configuration wherein said first portion and said second portion are separable at least along said main axis , and comprising at least: - a wedge-shaped slider comprising at least partly ferromagnetic material and movable along said main axis in such a way as to determine, on the basis of its positioning, said rest configuration and said constraint configuration, - a movable element at least partially counter-shaped to said slider and expandable radially with respect to said main axis when pushed by said slider in said constraint configuration, and - an obstacle configured to interfere with said movable element when said constraining means are in a constraining configuration in such a way as to block the reciprocal translation of said portions along said main axis , - a wedge-shaped slider comprising at least partly ferromagnetic material and movable along said main axis in such a way as to determine, on the basis of its positioning, said rest configuration and said constraint configuration, - a movable element at least partially counter-shaped to said slider and expandable radially with respect to said main axis when pushed by said slider in said constraint configuration, and - an obstacle configured to interfere with said movable element when said constraining means are in a constraining configuration in such a way as to block the reciprocal translation of said portions along said main axis , - said slider and said movable element being arranged on said first portion and said obstacle being arranged on said second portion , and said device being characterized in that - said slider includes a permanent magnet. <EOS>