PT - JOURNAL ARTICLE AU - Jefferson, Eugenia TI - Upfront DP - 2009 Dec 01 TA - American Dental Hygienists Association PG - 4--7 VI - 83 IP - 1 4099 - http://jdh.adha.org/content/83/1/4.short 4100 - http://jdh.adha.org/content/83/1/4.full SO - J Dent Hyg2009 Dec 01; 83