[A new case engineered for self-threading screw availability].

@article{Ravasini1979ANC,
  title={[A new case engineered for self-threading screw availability].},
  author={G Ravasini and Susanna Di Valerio},
  journal={Dental Cadmos},
  year={1979},
  volume={47 5},
  pages={43-4}
}