Table 4.

Proliferation Experiment Cell Count Results

	Group 1P (No Tx)	Group 2P (Pumice)	Group 3P (Varnish)	Group 4P (High Pol)	Group 5P (CHX)	Group 6P (Alcohol)	Group 7P (Steam)
Disc
1	6500	66,000	500	62,100	3000	55,000	28,800
2	4400	51,300	370	57,500	3600	60,000	23,700
3	3600	48,900	420	45,000	3300	58,000	21,300
Average	4833.33	55,400	430	54,866.67	3300	57,666.67	24,600
SD	1497.78	9257.97	65.57	8848.92	300	2516.61	3830.14
P		5.2 × 10−11‡	7.5 × 10−11‡	5.5 × 10−11‡	0.023*	4.0 × 10−11‡	1.0 × 10−08‡

Twenty thousand cells were seeded and counted after 1 week. When compared with the control group, statistically significant differences were found with group 3P (Varnish) and group 5P (CHX) because these groups had a significant reduction of cells over a 1-week period. In addition, statistically significant differences were found with group 2P (Pumice), group 4P (High Polish), group 6P (Alcohol), and group 7P (Steam) because these groups had a significant increase in proliferation of cells.

P value—all groups compared with group 1P.

^*Significant at P < 0.05.

^†Significant at P < 0.01.

^‡Significant at P < 0.001.