“…Nevertheless, the modification of organic matter has been reported as one of the mechanisms in laser-induced caries prevention (the organic blocking theory) . In laser therapy, several factors related to exposure need to be considered: the wavelength and energy density of the laser, the irradiation time, the focal distance, and water cooling www.intechopen.com Morioka, et al, 1991;Fried, et al, 1996;Featherstone, et al, 1998;Hossain, et al, 2000;Young, et al, 2000;Hsu, et al, 2000;Tisai, et al, 2002;Kato, et al, 2003;Matson, et al, 2002;Apel, et al, 2002Apel, et al, , 2004Apel, et al, , 2005Rodrigues, et al, 2004;Westerman, et al, 2002;Nammour, et al, 2005Cecchini, et al, 2005Liu, et al, 2006;Fried, et al 2006;Castelan, et al, 2007). Furthermore, to achieve additional prevention, special attention has focused on laser irradiation, topical fluorides and remineralizing solution associations, showing very promising results (Hossain, et al, 2002;Delbem, et al, 2003;Chin-Ying, et al, 2004;Tepper et al, 2004;Rodrigues, et al, 2004;Kwon, et al, 2005;Ana, et al, 2006;Westerman, 2006;Tagliaferro et al, 2007).…”