Table 1.

Distribution of the different restorations to be replaced depending on cavity classification, tooth type, and number of surfaces restored.

Amalgam n = 261						Composite n = 57
Molar n = 191			Premolar n = 70			Molar n = 29			Premolar n = 28
Class 1	class2	MOD	Class 1	class2	MOD	Class 1	class2	MOD	Class 1	class2	MOD
n = 97 (51%)	n = 66 (34%)	n = 28 (15%)	n = 21 (30%)	n = 30 (43%)	n = 19 (27%)	n = 16 (55%)	n = 8 (28%)	n = 5 (17%)	n = 10 (36%)	n = 7 (25%)	n = 11 (39%)