Objectives: During the construction of all-ceramic bridges the material properties must be considered by ceramic. The aim of this work was to development algorithms, that support the dental technicians in manufacturing of an tensile-stress-optimised all-ceramic bridge connector. Methods: 210 frameworks of all-ceramic bridges with different connector geometries were generated by a computer program. These frames were visualized by a CAD-system and examined by dental technicians that select the frameworks under the esthetic point of view. These selected frames were evaluated with a special computer program to calculate the mechanical properties of the bridge connectors. After that the selected frameworks were imported in a FEA-program, subjected to 5 different cases of loads and analyzed to create the best compromise between esthetic and load bearing aspects. Results: 1. The bridge connector should have elliptical basic geometry. 2. The ratio of width and height should be approx. 1,37. The result of a change of this value would have an impairment of aesthetic and mechanical strength. 3. The distance of the gingival side of the connector to the preparation limit and the distance of the upper side to the tooth fissure are to be selected so small as possible. Thus one receives a better distribution of forces from the bridge link on the brigde anchoring. 4. When used as an upper jaw bridge the intersection of axies of the ellipses should be in the center of the connector. When used as a lower jaw bridge the intersection of axies should be easily lingual transferred. Conclusions: A bridge connector should have an elliptical basic form with an ratio of widht/hight with approx. 1.37 and the connector height be as large as possible. The intersection of the axies of an ellipse should be lightly transfered lingual when used as a lower jaw brigde.

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