The present invention provides a root canal filler composition comprising: cement； and an absorbent liquid, wherein the cement comprises: tricalcium silicate (3CaOㆍSiO2) in which aluminium (Al) atoms are solid-soluted (Al solid-soluted C3S)； dicalcium silicate (2CaOㆍSiO2) in which aluminium (Al) atoms are solid-soluted (Al solid-soluted C2S)； and tricalcium aluminate (3CaOㆍAl2O3) in which silicon (Si) atoms are solid-soluted (Si solid-soluted C3A), the tricalcium aluminate being placed between one or more selected from the group consisting of the tricalcium silicate in which aluminium atoms are solid-soluted (Al solid-soluted C3S) and the dicalcium silicate in which aluminium atoms are solid-soluted (Al solid-soluted C2S). The present invention has effects of reducing the curing time and enhancing the compressive strength by preparing cement comprising aluminum solid-soluted tricalcium silicate, aluminum solid-soluted dicalcium silicate, and silicon solid-soluted tricalcium aluminate and using the cement as a root canal filler composition. In addition, the root canal filler composition of the present invention can ensure sufficient work time, thereby improving workability and storage stability.La présente invention concerne une composition d'obturation du canal radiculaire comprenant un ciment et un liquide absorbant, le ciment comprenant : du silicate tricalcique (3CaOㆍSiO2) contenant des atomes d'aluminium (Al) en solution solide (C3S contenant Al en solution solide) ； du silicate dicalcique (2CaOㆍSiO2) contenant des atomes d'aluminium (Al) en solution solide (C2S ccontenant Al en solution solide) ； et de l'aluminate tricalcique (3CaOㆍAl2O3) contenant des atomes de silicium (Si) en solution solide (C3A contenant Si en solution solide), l'aluminate tricalcique étant disposé entre un ou plusieurs éléments sélectionné dans le groupe constitué par le silicate tricalcique contenant des atomes d'aluminium en solution solide (C3S contenant Al en solution solide) et le si
