@misc{indiciae8f296484db3e,
  title = {[Smear layer after root canal preparation (SEM studies)].},
  author = {A Petschelt and H Oberschachtsiek},
  year = {1985},
  url = {https://pubmed.ncbi.nlm.nih.gov/3938390/},
  note = {Source identifier: 3938390}
}