| 摘要 |
FIELD: medicine.SUBSTANCE: group of inventions refers to dentistry and concerns dental composition and method of its application. Curable dental composition comprises: a) at least one dental resin containing at least two ethylenically unsaturated group; b) addition-fragmentation agent, represented by compound of formula (I),where R, Rand Reach independently represents Z-Q-, Y-Q′-, (hetero)alkyl group or (hetero)aryl group provided that at least one of R, Rand Rrepresents Z-Q-, and provided that at least one of R, Rand Rrepresents Y-Q′-; or R, Rand Reach independently represents Z-Q-, Y-Q′-, (hetero)alkyl group or (hetero)aryl group provided that at least one of R, Rand Rcontains both Z-Q- and Y-Q′-; where Q is covalent bond or binding group, having valence m+1; Q′ is covalent bond or binding group, having valence p+1; Z is polymerisable ethylenically unsaturated group; Y is functional group which binds with or etches tooth structure, on which there is curable dental composition; m is 1-6; p denotes 1 or 2; each Xindependently represents -O- or -NR-, where Rrepresents H or C-Calkyl, and n is 0 or 1. Method of processing tooth surface includes placement of above composition on surface of tooth in individual's oral cavity and its hardening.EFFECT: using group of inventions provides low deflection when testing load during hardening resinous composition at maintaining sufficient depth of hardening.11 cl, 7 tbl, 30 ex, 1 dwg |
