Table 3.

ANOVA of the Model 1 all investigated three-way interaction terms of the model.

Variable/Effect	Chisq	p-value
Treatment: Flowrate: Buffer capacity	0.198	0.648
Treatment: Flowrate: pH value	0.989	0.309
Treatment: Flowrate: DMFT	0.475	0.492
Treatment: Flowrate: Plaque index	0.286	0.592
Treatment: Flowrate: Gingivits index	9.588	0.002 (**)
Treatment: Buffer capacity: pH value	0.896	0.342
Treatment: Buffer capacity: DMFT	35.118	<0.001 (***)
Treatment: Buffer capacity: Plaque index	5.049	0.020 (*)
Treatment: Buffer capacity: Gingivits index	0.225	0.638
Treatment: pH value: DMFT	16.552	<0.001 (***)
Treatment: pH value: Plaque index	0.003	0.953
Treatment: pH value: Gingivits index	0.458	0.516
Treatment: DMFT: Plaque index	5.193	0.019 (*)
Treatment: DMFT: Gingivits index	19.869	<0.001 (***)
Treatment: Plaque index: Gingivits index	9.346	0.002 (**)

Interaction terms from the ANOVA model. The colon (“:”) indicates interactions between the specified factors. Treatment = Test drink or Placebo, DMFT = decay missing filled teeth, Plaque Index [22], Gingivitis index [23], pH value = pH value of the unstimulated saliva, Buffer capacity = Buffer capacity of the unstimulated saliva, Flowrate = Flowrate of the stimulated saliva.