@misc{indiciae9918cfb6d2a7,
  title = {Assessing effective obturation.},
  author = {R M Watson and B J Gray},
  year = {1985},
  doi = {10.1016/s0022-3913(85)80077-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/3860661/},
  note = {Source identifier: 3860661}
}