Comment on

• Total calculus removal: an attainable objective?

  Kepic TJ, O'Leary TJ, Kafrawy AH. Kepic TJ, et al. J Periodontol. 1990 Jan;61(1):16-20. doi: 10.1902/jop.1990.61.1.16. J Periodontol. 1990. PMID: 2179511 Clinical Trial.
• The effectiveness of subgingival scaling and root planning. I. Clinical detection of residual calculus.

  Sherman PR, Hutchens LH Jr, Jewson LG, Moriarty JM, Greco GW, McFall WT Jr. Sherman PR, et al. J Periodontol. 1990 Jan;61(1):3-8. doi: 10.1902/jop.1990.61.1.3. J Periodontol. 1990. PMID: 2179512
• The effectiveness of subgingival scaling and root planing. II. Clinical responses related to residual calculus.

  Sherman PR, Hutchens LH Jr, Jewson LG. Sherman PR, et al. J Periodontol. 1990 Jan;61(1):9-15. doi: 10.1902/jop.1990.61.1.9. J Periodontol. 1990. PMID: 2179516