Department of Integrated Dentistry, Jagiellonian University, Krakow, Poland.
Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
J Oral Rehabil. 2021 Oct;48(10):1129-1134. doi: 10.1111/joor.13235. Epub 2021 Aug 18.
Little is known about the effect of the type of splint material, heat-cured PMMA (HC) or chemical-cured PMMA (CC) on the wear of opposing tooth surfaces.
The aim of this in vitro study was to evaluate two-body wear of dentin, enamel, glass-ceramic or one of four resin composites when opposing splint materials, namely ProBase HC and CC.
The two-body wear of bovine dentine, bovine enamel, glass-ceramic IPS e.max CAD (EMAX) and four composites (Filtek Z250 [Z250], Clearfil AP-X [AP-X], Clearfil Majesty Posterior [CMP], Filtek Supreme XTE [FSE]) opposing three antagonists (HC and CC and stainless steel as control) were evaluated in the ACTA wear machine. In addition, all the surfaces were evaluated with scanning electron microscopy.
The highest average wear was observed in the case of dentin. The lowest average wear was found EMAX. In every case-except for EMAX-the wear rate was higher with HC than with CC (all differences being statistically significant).
The level of wear of enamel, dentin and various resin composites was higher in contact with HC than in CC, the wear of dentin being the highest. In the case of a patient with no or little tooth wear or whose teeth are restored with composite material or glass-ceramic, the splint HC might be preferred because of its better durability. However, when the splint is in contact with opposing dentin preservation of the dentin, CC might be the best choice.
对于夹板材料类型（热固性聚甲基丙烯酸甲酯（HC）或化学固化聚甲基丙烯酸甲酯（CC））对 opposing tooth surfaces 的磨损的影响知之甚少。
本体外研究旨在评估 opposing splint materials（即 ProBase HC 和 CC）为 dentin、enamel、玻璃陶瓷或四种树脂复合材料之一时的 two-body wear。
在 ACTA 磨损机中评估了牛牙本质、牛 enamel、玻璃陶瓷 IPS e.max CAD（EMAX）和四种复合材料（Filtek Z250 [Z250]、Clearfil AP-X [AP-X]、Clearfil Majesty Posterior [CMP]、Filtek Supreme XTE [FSE]）与三个拮抗剂（HC 和 CC 以及不锈钢作为对照）之间的 two-body wear。此外，所有表面均采用扫描电子显微镜进行评估。
在 dentin 的情况下观察到最高的平均磨损。EMAX 的平均磨损最低。除 EMAX 外，HC 的平均磨损率均高于 CC（所有差异均具有统计学意义）。
除 EMAX 外，enamel、dentin 和各种树脂复合材料的磨损率在与 HC 接触时高于与 CC 接触时，dentin 的磨损率最高。对于没有或几乎没有 tooth wear 的患者或其牙齿用复合材料或玻璃陶瓷修复的患者，由于其更好的耐用性，HC 夹板可能是首选。然而，当夹板与 opposing dentin 接触时，为了保存 dentin，CC 可能是最佳选择。
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