@misc{indiciae720da75812a2,
  title = {A nonclinical model for predicting scaling and root planing case difficulty.},
  author = {S J Daniel and D M Colbert},
  year = {1991},
  url = {https://pubmed.ncbi.nlm.nih.gov/1941105/},
  note = {Source identifier: 1941105}
}