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Formation of New Functionally Graded Biomaterial Composed of Ceramics or High-polymer with the Porous Structure on Gold Alloys

金合金上多孔结构陶瓷或高聚物组成的新型功能梯度生物材料的形成

基本信息

批准号：
13557169
负责人：
OHNO Hiroki
金额：
$ 8.26万
依托单位：
Health Sciences University of Hokkaido
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13557169/
关键词：
High-temperature oxidation Gold alloy Copper oxide Pickling Porous structure Resin bonding Ceramics bonding Hydroxyapatite

项目摘要

During the past decade, clinicians and patients have grown increasingly interested in posterior composite resins. Much of this interest has resulted from a desire for esthetic restorations. The purpose of this study was to improve bonding between dental adhesive resins or ceramics with gold alloy by creating a porous structure on the alloy surface, which enhanced mechanical bonding.The internal oxidation particles of Cu oxides precipitated in a 14K gold alloy surface after high-temperature oxidation at 800ーC in air were removed by pickling with an acid solution to create a sponge-like structure on the alloy surface. A PMMA resin containing 4-META as an adhesive monomer and a self-cured resin without 4-META were used to examine the effects of mechanical and chemical factors on bond strength. A thiophosphate-type metal primer (M-Primer II) was used in combination with 4-META resin to strengthen the chemical bonding of 4-META resin to the porous alloy surface. The surfaces of the alloy specimen treated by oxidation, pickling, and bonding with 4-META resin were analyzed using an electron probe X-ray micro-analyzer. SEM observation showed many resin tags on the resin side of the bond structure after removal of the gold alloy matrix with aqua regia. The porous structure on alloy surface is effective to increase the mechanical bond strength with dental adhesive resin, resulting that the bond strength with the porous structure is twice more than without the porous structure. The technique can apply for formation of an esthetic restoration.The porous structure was immersed in a solution containing Ca^<2+> and PO_4^<-3>. Hydroxyapatite was precipitated in the porous structure. The technology creating porous structure on the gold alloy is useful for forming implant structure embedded in a jawbone. Further research is needed in application for clinical use with the porous structure technology.

在过去的十年中，临床医生和患者对后路复合树脂越来越感兴趣。这种兴趣在很大程度上源于对审美修复的渴望。为了改善牙科粘接树脂或陶瓷与金合金之间的粘接性能，在金合金表面形成多孔结构，增强了金合金与牙科粘接树脂或陶瓷之间的机械结合，用酸洗去除14K金合金表面800ーC高温氧化后析出的铜氧化物内氧化颗粒，在合金表面形成海绵状结构。以含4-META的PMMA树脂为粘接单体，不含4-META的自固化树脂为粘接材料，考察了机械和化学因素对粘接强度的影响。将硫代磷酸酯型金属底漆(M-Primer II)与4-甲基树脂联合使用，以增强4-甲基树脂与多孔合金表面的化学结合。用电子探针X-射线微区分析仪对氧化、酸洗和4元树脂粘接处理后的合金试件进行了表面分析。扫描电子显微镜观察发现，去除含有王水的金合金基质后，粘结结构的树脂侧有大量的树脂标记。合金表面的多孔结构有效地提高了与牙科粘接树脂的机械结合强度，与多孔结构的粘结强度比没有多孔结构的粘结强度提高一倍。该技术可用于美容修复的形成。将多孔结构浸泡在含有Ca^-lt；2+-gt；和PO4^-lt；-3-gt；的溶液中。多孔结构中有羟基磷灰石析出。这种在金合金上形成多孔结构的技术对于形成嵌入颌骨的种植结构是有用的。多孔结构技术在临床应用上还需进一步研究。