PT - JOURNAL ARTICLE AU - Darby, Michele Leonardi TI - The Advanced Dental Hygiene Practitioner at the Master's-Degree Level: Is It Necessary? DP - 2009 Mar 01 TA - American Dental Hygienists Association PG - 92--95 VI - 83 IP - 2 4099 - http://jdh.adha.org/content/83/2/92.short 4100 - http://jdh.adha.org/content/83/2/92.full SO - J Dent Hyg2009 Mar 01; 83