Table 1.

Statistical evaluation of the in situ experiments with the different preparations; Kruskal-Wallis test and additional pairwise comparison with Mann-Whitney U test (P < 0.05).

Kruskal-Wallis test: P < 0.001	Enamel		Dentin
	Tooth mousse	Chlorhexidine	No rinse	Tooth mousse	Chlorhexidine
DAPI
Enamel
No rinse	n.s.	<0.001	n.s.	n.s.	n.s.
Tooth mousse		0.001	n.s.	<0.001	n.s.
Chlorhexidine			<0.001	<0.001	n.s.
Dentin
No rinse				0.008	0.001
Tooth mousse					<0.001
BacLight viable bacteria
Enamel
No rinse	n.s.	n.s.	n.s.	n.s.	n.s.
Tooth mousse		n.s.	n.s.	n.s.	n.s.
Chlorhexidine			<0.001	<0.001	n.s.
Dentin
No rinse				n.s.	<0.001
Tooth mousse					<0.001
BacLight dead bacteria
Enamel
No rinse	n.s.	0.001	n.s.	n.s.	<0.001
Tooth mousse		0.012	n.s.	n.s.	<0.001
Chlorhexidine			n.s.	<0.001	n.s.
Dentin
No rinse				n.s.	<0.001
Tooth mousse					<0.001
CFU: aerobic
Enamel	0.007	<0.001	0.001	n.s.	<0.001
No rinse		<0.001	n.s.	n.s.	<0.001
Tooth mousse			n.s.	<0.001	n.s.
Chlorhexidine
Dentin
No rinse				0.004	<0.001
Tooth mousse					<0.001
CFU: anaerobic
Enamel
No rinse	0.011	<0.001	n.s.	n.s.	<0.001
Tooth mousse		0.008	n.s.	<0.001	<0.001
Chlorhexidine			n.s.	<0.001	n.s.
Dentin
No rinse				<0.001	<0.001
Tooth mousse					<0.001