Loosening a tight Benex screw. Push the extruded root back into the socket, slightly loosen the screw, move the root back into the extrusion position, wedge it and remove the screw.
Especially with roots that are hard to wedge, e.g. free end gap, suggestion above must be used
In the posterior tooth region you can most easily splint with a TTS splint as here or with anything else .
In the esthetic area you make a temporary crown from plastic ,most simply with a die or with a prefabricated plastic crown.