@misc{indiciae2239b2054c06,
  title = {Removing broken abutment screws from internally threaded implants.},
  author = {H Biller},
  year = {1993},
  doi = {10.1016/0022-3913(93)90118-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/8445570/},
  note = {Source identifier: 8445570}
}