Dental composition

A dental composition comprising:

• (a) at least two di- or polyepoxides having 2 to 5 epoxide groups and having a molecular weight of from 200 to 700 Da,
• (b) one or more primary monoamines and/or disecondary diamines;
• (c) one or more aliphatic polyamines;
• (d) a particulate filler,
• wherein the molar ratio of epoxide groups in component (a) to the N—H bonds in component (b) and (c) [epoxide(a)]/[N—H(b),(c)] is in the range of from 0.9 to 1.1;
• wherein the at least two di- or polyepoxide having 2 to 5 epoxide groups is a compound of the following formula (I):
• A(BZm)n (I)
• wherein
• A represents an n-valent organic moiety having 1 to 10 heteroatoms selected from oxygen atoms and sulfur atoms;
• and
• B represents an m+1-valent organic moiety,
• Z is an epoxide group which may have a substituent,
• m which are independent from each other represent an integer of at least 1;
• and
• n is an integer of from 1 to 5;
• wherein the m are selected so that 2 to 5 epoxide groups are present;
• wherein the organic moiety in A of one of the di- or polyepoxides contains a phenylene moiety;
• wherein the heteroatoms selected from oxygen atoms and sulfur atoms in A are present in ester bonds, ether bonds, thioether bonds or thioester bonds;
• wherein the at least two di- or polyepoxides having 2 to 5 epoxide groups are obtained by reacting one or more compounds having 2 to 5 hydroxyl groups with epichlorohydrin;
• wherein one of the compound having 2 to 5 hydroxyl groups is resorcinol;
• wherein BZ is a group of the formula (II) or (III):
• wherein
• X is —NH—, an oxygen atom or a sulfur atom,
• X′ is —NH—, an oxygen atom or a sulfur atom,
• X″ is —NH—, an oxygen atom or a sulfur atom,
• X′″ is —CH2—, —NH—, an oxygen atom or a sulfur atom,
• R11 and R12
• which may be the same or different, independently represent a hydrogen atom or a straight chain or branched C1-6 alkyl group,
• R13 represents a hydrogen atom or a straight chain or branched C1-6 alkyl group,
• R14
• represents a hydrogen atom, a hydroxyl group which may be substituted, or a straight chain or branched C1-6 alkyl group,
• o represents an integer of from 2 to 10,
• p is an integer of from 0, 1 or 2;
• q which may be the same or different, independently represent an integer of from 0 to 10;
• v represents an integer of from 1 to 10;
• and wherein the dental composition does not contain any of 2,2-bis-(4-hydroxyphenyl) propane, 2,2-bis-(4-hydroxyphenyl)-methane, bisphenol-A diglycidyl ether or bisphenol F diglycidyl ether.