An　alternative　method　was　used　to　estimate　the　maximum　possible　shrinkage.　In　the　experiments,　the　material　was　a　novel,　blue-sensitized　photopolymer　designed　by　ourselves　for　minimizing　shrinkage.　The　results　show　that　the　shrinkage　depends　on　the　material　composition,　and　the　volume　shrinkage　of　one　of　samples　with　modified　composition　reaches　less　than　0.2%.