The present invention relates to a toothpick for oral hygiene that has ultra-slim dimensions that allow deep, efficient and effective cleaning of the interproximal space, to remove the majority of food remains. The toothpick is formed from any type of flexible material and the shape thereof is formed by straight or curved lines or combinations thereof limited to the dimensions of the toothpick (length by width by thickness), providing properties of flexibility, ultra-lightness and ultra-fineness. The invention is mainly characterised in that the end sections of the toothpick are formed by straight or curved lines or combinations thereof, which narrow progressively, the ends thereof forming symmetrical or asymmetrical, regular, irregular, organic, hand-drawn or accidental figures with a diameter, axis, base, height, straight side, perpendicularity, cross-section or oblique section of less than 0.75 mm with respect to the width of the end section of the toothpick. The invention is further characterised in that the end section of the toothpick can extend longitudinally between 0.1 and 20 mm to the end of the end section, with respect to the length of the toothpick.La presente invención está relacionada entonces con un mondadientes para higiene bucal cuyas dimensiones ultra delgadas permiten una limpieza profunda, eficiente y eficaz del espacio interproximal para retirar la mayoría de los restos de alimentos. El mondadientes está conformado por cualquier tipo de material flexible y su geometría está formada por líneas rectas, curvas o sus combinaciones limitadas a sus dimensiones (largo por ancho por espesor), lo que le proporciona propiedades de flexibilidad, ultra ligereza y ultra finura. La principal característica del mondadientes objeto de la presente invención es que las secciones finales están conformadas por líneas rectas, curvas o sus combinaciones que se van estrechando o agudizando progresivamente, cuyos extremos forman figuras simétricas o asimétricas, regul
