The effect of proximal cavity design on the cementation of Class II inlays.

@article{Gelb1984TheEO,
  title={The effect of proximal cavity design on the cementation of Class II inlays.},
  author={Michael Gelb and D F Pascoe and Sondra Hirsch and F V Panno and James M Kaim},
  journal={The Journal of prosthetic dentistry},
  year={1984},
  volume={51 2},
  pages={202-4}
}
This article indicates that the gingival opening of a two-surface cast restoration after cementation is minimized by the use of a preparation with proximal grooves.