Vergos Vassilis K, Tripodakis Aris-Petros D
Department of Fixed Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Greece.
Int J Prosthodont. 2003 Jul-Aug;16(4):365-8.
The aim of this study was to evaluate four recording materials (polyether, polyvinyl siloxane, acrylic resin, and wax) for their ability to accurately record, maintain, and reproduce the vertical interocclusal relationship.
A metallic apparatus was used to represent the opposing arches; its epoxy resin duplicate represented the working casts. The vertical discrepancies produced because of the presence of the records were measured both after repositioning them on the metal apparatus and after transferring them onto the casts. Two-way ANOVA was performed.
Closure through the interocclusal recording materials produced small vertical discrepancies ranging from 24 to 74 microm. When repositioned on the apparatus, the vertical discrepancies were greater. The lowest discrepancy was displayed by polyvinyl siloxane (101 microm) and polyether (107 microm), and the greatest was displayed by wax (168 microm). When records were transferred onto casts, the discrepancies were approximately 0.5 mm, without significant differences among materials.
Closure through interocclusal recording materials and removal and repositioning of the records on the apparatus produced small vertical discrepancies with clinically insignificant differences between the materials tested. When records of all materials tested were transferred onto casts, vertical discrepancies of approximately 0.5 mm were found, which is of clinical concern.
本研究的目的是评估四种记录材料（聚醚、聚乙烯基硅氧烷、丙烯酸树脂和蜡）准确记录、保持和再现垂直牙合间关系的能力。
使用金属装置代表对颌牙弓；其环氧树脂复制品代表工作模型。在将记录重新放置在金属装置上后以及将它们转移到模型上后，测量由于记录的存在而产生的垂直差异。进行双向方差分析。
通过牙合间记录材料进行闭合产生的垂直差异较小，范围为24至74微米。当重新放置在装置上时，垂直差异更大。聚乙烯基硅氧烷（101微米）和聚醚（107微米）显示出最低差异，蜡（168微米）显示出最大差异。当记录转移到模型上时，差异约为0.5毫米，各材料之间无显著差异。
通过牙合间记录材料进行闭合以及在装置上移除和重新放置记录产生的垂直差异较小，所测试材料之间的差异在临床上无显著意义。当将所有测试材料的记录转移到模型上时，发现垂直差异约为0.5毫米，这在临床上值得关注。
