Galbany Jordi, Estebaranz Ferran, Martínez Laura M, Romero Alejandro, De Juan Joaquín, Turbón Daniel, Pérez-Pérez Alejandro
Secc. Antropologia, Departament de Biologia Animal, Universitat de Barcelona. Av. Diagonal 645, 08028 Barcelona, Spain.
Microsc Res Tech. 2006 Apr;69(4):246-52. doi: 10.1002/jemt.20296.
Dental casting is a very common procedure for making high-quality replicas of paleo-anthropological remains. Replicas are frequently used, instead of original remains, to study both fossil and extant Primate teeth in morphological and metrical analyses. Several commercial products can be used in molds. This study analyzed SEM image resolution and enamel surface feature definition of tooth molds at various magnification levels and obtained, with both Coltène and 3M low-viscosity body polyvinylsiloxane impression, materials and polyurethane casts. Results, through comparison with the original teeth, show that both the negative molds and the positive casts are highly reliable in replicating enamel surfaces. However, positive cast quality is optimal for SEM observation only till the fourth consecutive replica from the original mold, especially at high SEM magnification levels.
牙科铸造是制作古人类遗骸高质量复制品的一种非常常见的程序。在形态学和测量分析中，复制品经常被用来代替原始遗骸研究化石和现存灵长类动物的牙齿。有几种商业产品可用于制作模具。本研究分析了不同放大倍数下牙齿模具的扫描电子显微镜（SEM）图像分辨率和釉质表面特征清晰度，并使用科尔tene和3M低粘度聚硅氧烷印模材料以及聚氨酯铸型获得了结果。通过与原始牙齿比较，结果表明，阴模和阳模在复制釉质表面方面都非常可靠。然而，对于扫描电子显微镜观察而言，只有从原始模具开始连续制作的第四个复制品之前，阳模质量才是最佳的，尤其是在高扫描电子显微镜放大倍数下。
