Robinson C, Kirkham J, Weatherell J A, Richards A, Josephsen K, Fejerskov O
Acta Anat (Basel). 1987;128(1):1-10. doi: 10.1159/000146306.
Developing permanent teeth of different ages were obtained from Danish Landrace pigs. Visibly distinct zones on their enamel surfaces were shown to correspond to changes in chemical composition previously reported for other species. The time of appearance, rate of progress and duration of each stage was determined for each tooth type.
取自丹麦长白猪不同年龄阶段正在发育的恒牙。其牙釉质表面明显不同的区域被证明与先前报道的其他物种化学成分的变化相对应。确定了每种牙齿类型各阶段的出现时间、进展速度和持续时间。