Table 2.

Modified united states public health service evaluation criteria

Category	Scores	Criteria
Retention	a	Complete retention of the restoration
	c	Loss of the restoration
Secondary caries	a	No evidence of caries
	c	Caries is evident
Colour match	a	Restoration matches adjacent tooth structure in color and translucency
	b	Mismatch is within an acceptable range of tooth color and translucency
	c	Mismatch is outside the acceptable range
Marginal adaptation	a b	Closely adapted, no visible crevice Visible crevice, explorer will penetrate
	c	Crevice in which dentin is exposed
Marginal discoloration	a b	Absence of marginal discoloration Presence of marginal discoloration, limited and not extended
	c	Evident marginal discoloration, penetrated toward the pulp chamber
Anatomic form	a	Continuous
	b	Slight discontinuity, clinically acceptable
	c	Discontinuous, failure