Comparative analysis of dental enamel polyvinylsiloxane impression and polyurethane casting methods for SEM research
Comparative analysis of dental enamel polyvinylsiloxane impression and polyurethane casting methods for SEM research
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DOI：
10.1002/jemt.20296
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发表时间：
2006-04-01
影响因子：
2.5
通讯作者：
Pérez-Pérez, A
中科院分区：
文献类型：
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作者：
Galbany, J;Estebaranz, F;Pérez-Pérez, A
牙齿铸造是制作高质量古人类学遗骸复制品的一种非常常见的方法。复制品，而不是原来的遗骸，经常被用来研究化石和现存的灵长类动物牙齿的形态和测量分析。几种商业产品可用于模具。本研究分析了不同放大倍数下的牙齿模具的SEM图像分辨率和釉质表面特征定义，并使用Coltene（R）和3M（TM）低粘度体聚乙烯硅氧烷印模、材料和聚氨酯模型获得。结果表明，阴模和阳模在釉质表面的复制上都具有较高的可靠性。然而，积极的铸造质量是最佳的SEM观察，直到第四个连续的复制品从原来的模具，特别是在高SEM放大倍率水平。
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 Coltene(R) and 3M(TM) 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.