| abstract |
(57) [Summary]nThe present invention relates to (a) a curable resin, (b) (i) nano-sized particle clusters comprising non-heavy metal oxide particles and heavy metal oxides and not being fully densified, and (ii) non-aggregated non-agglomerated particles. A filler comprising heavy metal oxide nano-sized particles or non-aggregated heavy metal oxide nano-sized particles. The material is suitable for dental materials. |