Anti-rotational device for fixing the implantology connecting screw, characterized by being made in one piece consisting of: - a cylindrical, elongated and integral body (1) and measures similar to the diameter of the channel or chimney (6) made internally in the dental crown (5), where it is lodged intimately. - end located at the apical level (2), which contains the positive register with design and measures similar to those of the negative register of the head of the connection screw (8) where it is internally housed. - end located at coronal level (3), whose surface is preferably textured. (Machine-translation by Google Translate, not legally binding)1. Dispositivo antirrotatorio de fijación del tornillo de conexión implantológico caracterizado por estar confeccionado en una sola pieza constituido por: - un cuerpo (1) cilíndrico, alargado e íntegro y de medidas similares al diámetro del canal o chimenea (6) realizado internamente en la corona dental (5), donde va alojado íntimamente. - extremo localizada a nivel apical (2), que contiene el registro en positivo con diseño y medidas similares a las del registro en negativo de la cabeza del tornillo de conexión (8) donde se aloja internamente. - extremo localizado a nivel coronal (3), cuya superficie está preferentemente texturizada.