[Biomechanically optimized construction of occlusal splints and subjective evaluation by probands]

In a double blind study twelve class I probands received occlusal splints with six different customized anterior guidances. The subjective feelings were rated using a psychologic scale. It was shown, that splints with a large "a" were better rated than splints with a small "a". "a" is the radius of the maximal curvature of the sagittal anterior tooth curvature. The transition between positive and negative ratings was very sharp and localized at the individual "a". These results suggest that occlusal splints can be optimized by including customized anterior guidances. A detailed technical description of the manufacturing of these splints is given.