Table 7.

Irradiance, radiant exposure (product of irradiance and time (s)), and heat development (surface temperature and pulp chamber temperature) at different distances (on tooth with a flat dentin surface with a pulpal wall thickness of approximately 0.6 mm (T2)) with different light-curing units, Bluephase style® battery

Distance (mm)	Irradiance (mW/mm2)	Time (s)	Radiant exposure (J/mm2)	Surface temperature (°C)	Pulp chamber temperature (°C)
0 mm	1222 ± 9	30	36.7 ± 0.3	52.6 ± 0.5	42.5 ± 0.4
		20	24.4 ± 0.2	52.5 ± 0.4	41.5 ± 0.3
		10	12.2 ± 0.1	48.6 ± 0.7	40.0 ± 0.1
2 mm	1537 ± 13	30	46.2 ± 0.4	58.1 ± 0.9	42.0 ± 0.6
		20	30.7 ± 0.3	51.3 ± 0.6	41.3 ± 0.4
		10	15.4 ± 0.1	47.8 ± 0.8	40.0 ± 0.3
4 mm	1366 ± 1	30	40.1 ± 0.0	53.1 ± 0.8	39.5 ± 0.3
		20	27.3 ± 0.0	50.2 ± 0.4	39.3 ± 0.4
		10	13.7 ± 0.0	46.3 ± 1.3	37.7 ± 0.2