TY  - RPRT
TI  - Comparative analysis between a modified ultrasonic tip and hand instruments on clinical parameters of periodontal disease.
AU  - T A Copulos
AU  - S B Low
AU  - C B Walker
AU  - Y Y Trebilcock
AU  - A F Hefti
PY  - 1993
DO  - 10.1902/jop.1993.64.8.694
UR  - https://pubmed.ncbi.nlm.nih.gov/8410606/
ID  - 8410606
ER  -