Table 3.

Two-way ANOVA interaction effects.

Variable	Sum of squares	df	Mean squares	F	p
Pediatric drug	23.704	9	2.634	0.943	0.491
Restorative material	298.904	2	149.452	53.508	0.000
Pediatric drug X restorative material	55.299	18	3.072	1.100	0.361
Error	335.168	120	2.793
Total	3011.920	150

df: degrees of freedom.

^∗ p < 0.001; restorative material.