MATERIAL FOR OBTAINING DENTAL RADICULAR BEHAVIORS.

摘要

A dental root canal sealing composition, comprising (i) an amine-terminated prepolymer having a viscosity at 23 ° C of less than 100 Pa.s, which can be obtained by reacting (a) one mole of a compound of the following formula (I) (See formula) in which Z represents a n-valent C2-4 hydrocarbon group, whose groups may contain from 1 to 6 oxygen atoms, and may be substituted with 1 to 6 C1-4 alkyl groups; X represents a single bond or an oxygen atom or a nitrogen atom substituted with a C1-6 alkyl group; L represents a single bond or an optionally substituted C1-16 alkylene group, an optionally substituted C6-14 arylene group, an optionally substituted C7-16 alkylene arylene group, an optionally substituted C7-16 arylene arylene group, the groups of which may be substituted with 1 to 6 C1-4 alkyl groups; and n represents an integer from 2 to 6; and (b) at least n moles of one or more compounds (b1) of the following formula (II) (See formula) in which A represents a divalent saturated aliphatic C2-16 hydrocarbon group or a saturated C3-6 cycloaliphatic hydrocarbon group divalent, whose groups may contain 1 to 6 oxygen atoms, and which may be substituted with 1 to 6 C1-4 alkyl groups; Ra and Rb are the same or different and represent a hydrogen atom, a C1-6 alkyl group or a C3-14 cycloalkyl, which may be substituted with one or more members of the group selected from a C1-4 alkyl group, C1 alkoxy group - 4, a phenyl group and a hydroxy group; or (b2) of formula (III) R''NH2 (III) in which R '' represents a substituted or unsubstituted C1 to C18 alkyl group, a substituted or unsubstituted C3 to C18 cycloalkyl group, a C7 to aralkyl group C30 substituted or unsubstituted, whose groups may be substituted with one or more members of the group selected from a C1-4 alkyl group, C1-4 alkoxy group, a phenyl group and a hydroxy group, optionally combined with another di or polyamine compound ; (ii) a compound capable of undergoing polyaddition with the amine terminated prepolymer (i); (iii) 40 to 85% by weight of a load to provide a minimum radiopacity of at least 3 mm / mm Al.