Photoinitiator concentration and modulated photoactivation: influence on polymerization characteristics of experimental composites

Applied Adhesion Science

Table 4 Results of depth of cure (DCure) in relation to type of composite (C) and photoactivation method (PM), means (SD)

PM	C	Surface	1 mm	2 mm	3 mm	4 mm	DCur
HI	C1	35.8(1.67)Ca	37.1(3.13)Ca	21.5(3.61)Cb	02.8(0.62)Cc	00.0(0.00)Cd	1 mm
HI	C2	51.5(2.49)Ba	46.2(1.09)Ba	44.9(2.59)Ba	25.3(3.54)Bb	02.9(0.22)Bc	2 mm
	C3	56.8(3.31)Aa	58.4(2.37)Aa	52.9(1.54)Aa	48.2(1.88)Aa	20.4(2.50)Ab	3 mm
LI	C1	35.0(1.66)Ca	34.0(2.56)Ca	16.0(4.50)Cb	02.8(1.54)Cc	00.0(0.00)Ac	1 mm
LI	C2	43.4(0.67)Ba	43.2(5.43)Ba	36.2(2.61)Ba	17.4(5.97)Bb	02.2(0.43)Ac	2 mm
	C3	56.1(9.11)Aa	53.9(4.89)Aa	49.3(6.07)Aa	29.5(6.59)Ab	06.8(3.97)Ac	2 mm
SS	C1	34.1(3.67)Ca	32.5(2.83)Ca	13.3(3.74)Cb	02.9(0.69)Cc	00.0(0.00)Bc	1 mm
SS	C2	41.5(2.07)Ba	40.3 (2.95)Ba	38.8(5.23)Ba	28.3(5.48)Bb	06.8(2.51)ABc	2 mm
	C3	48.0(3.34)Aa	47.4(2.34)Aa	46.2(5.61)Aa	40.8(3.18)Aa	12.7(3.46)Ab	3 mm
PD	C1	33.0(2.96)Ba	33.5(2.87)Ba	17.8(1.88)Bb	03.6(1.51)Cc	00.0(0.00)Bc	1 mm
PD	C2	47.4(6.25)Aa	47.0(8.90)Aa	42.6(4.61)Aa	26.9(4.79)Bb	10.5(8.87)Ac	2 mm
	C3	49.1(5.12)Aa	47.2(1.89)Aa	47.7(2.70)Aa	37.7(5.43)Ab	12.8(4.00)Ac	2 mm

Statistical differences are expressed by different capital letters in columns within each group of PM, and by different minuscule letters in rows (p < 0.05).