A comparative study of inter-abutment distance of dies made from full arch dual-arch impression trays with those made from full arch stock trays: An
Conclusion: The metal dual-arch trays showed better accuracy followed by the plastic dual-arch and stock dentulous trays, respectively, though statistically insignificant. The pouring sequence did not have any effect on the inter-abutment distance statistically, though pouring the non-working side of the dual-arch impression first showed better accuracy. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))