Fleming GJP, et al. – This study was designed not only to ascertain whether shrinkage stresses generated on photo–polymerisation of the resin–cement are sufficient to induce ceramic surface defect stabilization but also to understand the transient nature (or not) of the residual stresses conferred post photo–polymerisation of the resin–cement. The results seemed to suggest that a connection between shrinkage stresses related to the photo–polymerization of dental resin–based cements and the reinforcement of dental porcelain has clearly been established.