“…[35] Face to these considerations, polymerization of thick samples and even of resins containing fillers can be achieved. Reprinted with permission from Bonardi et al [35] Considering that the light penetration is the key parameter for achieving high monomer conversions, a wide range of structures have been examined ranging from truxene derivatives [36] to copper complexes, [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] carbazoles, [54][55][56][57][58][59][60][61][62][63][64][65] chalcones, [28,[66][67][68][69][70][71][72][73][74][75][76][77][78] zinc complexes, [79] acridones,…”