RETINA ® , The Journal of Retinal and Vitreous Diseases, encourages authors to submit Brief Reports describing unusual findings, new techniques, and new instruments. Material submitted for consideration in this section of the journal is done so with the assumption that the data provided do not duplicate previously published material and that the material has not been submitted for consideration elsewhere. Each author must sign a disclosure to this effect (see Instructions to Authors for complete wording of transfer letter). Brief Reports submitted for this section of the journal may be subjected to the standard review process that is applied to other material submitted to RETINA ® . Brief Reports should follow the requirements listed in the Instructions to Authors, with the following caveats: Brief Reports should not exceed 4 pages in length; no more than 5 references should be cited; and each Brief Report should include no more than 4 figures.

We performed stress analysis by the three-dimensional photoelastic experiments in order to elucidate dynamic behavior in porcelain laminate veneer restoration of the lower central incisors. We employed two models in preparing the crown: Modell (incisal edge not covered with laminate shell) and Model 2 (incisal edge covered with laminate shell).We used two conditions of loading: Loading 1 (load applied to the labial mesial angle near the incisal edge from the side at an angle of 45°against the tooth axis) and Loading 2 (load applied to the incisal edge in parallel to the tooth axis). 2) In a wide range in the distal part of shell during Loading 1 in Model 2, suggesting the possibility of laminate shell detachment.3) The results of our examination suggested that, in performing porcelain laminate veneer restoration in the lower central incisor, a more stable stress condition can be achieved when the abutment shape is used without reducting the incisal edge.

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