Table 2.

Mean number of amalgam-filled tooth surfaces and resin-filled tooth surfaces of participants

Survey	Total	Deciduous tooth surface			Permanent tooth surface
	Amalgam	fs*	Resin	Amalgam	FS†	Resin	Amalgam
Baseline	3.12	6.81	0.46	2.83	0.75	0.27	0.29
First follow up	3.13	6.53	0.55	2.73	1.05	0.43	0.40
Second follow up	2.50	5.13	0.49	2.09	1.03	0.50	0.41

^*fs, filled tooth surface of deciduous teeth; †FS, filled tooth surface of permanent teeth.