2Mills RW, Jandt KD, Ashworth SH. Dental composite depth of cure with halogen and blue light emitting diode technology [ J ]. Br Dent J, 1999, 186(8): 388-391.
3Stahl F, Ashworth SH, Jandt KD, et al. Light-emitting diode ( LED ) polymerization of dental composites: flexural properties and polymerization potential [ J]. Biomaterials, 2000, 21 (13) : 1379-1385.
4Tarle Z, Meniga A. Composite conversion and temperature rise using a conventional, plasma arc, and an experimental blue LED curing unit[J]. J Oral Rehabil, 2002, 29(7) : 662-667.