“…Most popular CaP compound employed in the reviewed patent documents is α-TCP [ [144] , [145] , [146] , [147] , [148] , [149] , [150] , [151] , 151 , 152 , [152] , [152] , [153] , [154] , [155] , [156] , [157] , [158] , [159] , [160] , [161] , [162] , [163] , [164] , [165] , [166] , [167] , [168] , [169] , [170] ], although there are some documents that use β-TCP as well [ 153 , 159 , [162] , [163] , [164] , [165] , [166] , 172 ]; in some documents ACP also appears [ 160 , 166 , 169 , 173 ]. Tendency to use more than one CaP form can also be observed [ 153 , [158] , [159] , [160] , [162] , [163] , [164] , [165] , [166] , 169 , 170 , 172 , 174 ].…”