@misc{indiciae20f15f22e0d8,
  title = {A gingival guard for crown preparation.},
  author = {S Fitzig and E Weiss and M Helft and Z Metzger},
  year = {1988},
  doi = {10.1016/0022-3913(88)90007-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/3278098/},
  note = {Source identifier: 3278098}
}