Laboratory evaluations of three dentifrices with polishing or brushing

The purpose of this study was to determine the depth of deposit removal of three dentifrices using a dental felt polishing tip or an Oral-B(R) P 35 to othbrush. The dentifrices were compared using a laboratory method which sim ulates clinical tooth polishing or toothbrushing procedures, and utilizes a pressure-sensitive paper that records the depth of deposit removal. Each p olishing time was conducted for five seconds; toothbrushing rime was 15 sec onds. Both polishing and toothbrushing were performed at a weight of 250 gr ams. Depth of Deposit Removal (DDR) was recorded using a 0-4 scale from a c omparative color chart. The dentifrices evaluated were Arm & Hammer(R) Dent al Care, Colgate(R) Regular, and Crest(R) Regular. Twenty-four replicates o f each dentifrice, tested undiluted, were performed. Results indicated that dentifrice efficacy was ranked numerically as Arm & Hammer Dental Care > C olgate Regular > Crest Regular. In all of the assays the Arm & Hammer Denta l Care dentifrice had significantly (p < 0.01-0.001) higher DDR mean values compared to the Colgate Regular and Crest Regular dentifrices. The Colgate Regular dentifrice was significantly (p < 0.01-0.001) superior to the Cres t Regular dentifrice in the assays conducted.