Studies on the veneered titanium crown with resin composites for a clinical use

树脂复合材料钛冠贴面临床研究

• 批准号: 07672121
• 负责人: FUJISHIMA Akihiro
• 金额: $ 1.47万
• 依托单位: Showa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07672121/
• 关键词: Titanium; Veneered crown with resin composite; Titanium casting; Sandblasting; Alumina; Bond strength; Non-retention beads method; チタン; 接着; 硬質レジン; 前装冠

The structure of retention beads prepared on the wax pattern was successufully reconstructed on the titanium castings by a centrifugal casing method. However, SEM observation indicated that investment material still remained on the surface of the castings among the retention beads even after sandblasting. Therefore, we aimed to apply a non-retention beads method on the metal frame for veneered titanium crowns.We at first examined the treating conditions for sandblasting using three average particle sizes of alumina on the plates of cp titanium (cp Ti) and cobalt-chrome allowy (Co-Cr) as a control. EDX analyzes showed the amount of alumina on the surface was 33-45 wt% on cp Ti and 22-42wt% on Co-Cr, respectively. These results suggested that the lower pressure and shorter treating time were suitable to perform sandblasting for titanium than for other dental alloys.Furthermore, we need more information on the bonding surface of both metal and alumina plates to clarify the bonding mechanism of the surface of the metal sandblasted by alumina particles. We examined bonding strengths of commercial resin bonding systems to cp titanium with sandblasting using three different sizes of alumina particles (50mum, 110mum and 250mum). Sandblasting with 250mum alumina particles showed the highest bonding strength. The bonding strength increased with the increase of the size of alumina particles. However, there were no statistically significant differences among the strength from 110mum and 250mum, and polished surface with 50mum. Bonding strength for sintered alumina plates was significantly lower than that of titanium on the commercial NMC and CSD bonding systems that had excellent bonding for titanium.I suggest that the existence of alumina on titanium surface by sandblasting with alumina particles was not useful to improve bonding properties of resin composites on the sandblasted surface of cp titanium.

通过离心套管法在钛铸件上成功地重建了蜡模上制备的固位珠结构。然而，SEM观察表明，即使在喷砂之后，铸件表面的固位珠中仍然残留有熔模材料。因此，我们的目标是在贴面钛冠金属框架上应用非保留珠方法。我们首先使用cp钛（cp Ti）和钴铬合金（Co-Cr）板上的三种平均粒径的氧化铝作为对照，研究喷砂处理条件。 EDX 分析表明，表面上的氧化铝含量分别为 cp Ti 上的 33-45 wt% 和 Co-Cr 上的 22-42wt%。这些结果表明，与其他牙科合金相比，较低的压力和较短的处理时间适合对钛进行喷砂。此外，我们需要更多有关金属和氧化铝板结合表面的信息，以阐明氧化铝颗粒喷砂金属表面的结合机制。我们使用三种不同尺寸的氧化铝颗粒（50mum、110mum 和 250mum）通过喷砂检查了商业树脂粘合系统与 cp 钛的粘合强度。使用 250mum 氧化铝颗粒进行喷砂显示出最高的结合强度。结合强度随着氧化铝颗粒尺寸的增大而增大。然而，110mum和250mum以及50mum抛光表面的强度没有统计学上的显着差异。烧结氧化铝板的结合强度明显低于对钛具有优异结合力的商业NMC和CSD结合系统上的钛。我认为通过用氧化铝颗粒喷砂在钛表面上存在氧化铝对于改善CP钛喷砂表面上的树脂复合材料的结合性能没有帮助。

项目成果

A.Fujishima, Y.Fujishima, Jack.L Ferracane, T.Miyazaki, A.Shiba: "Factors affecting the bonding of Silicoater MD for resin veneering to cp Ti" J Showa Dent Soc. 17. 41-47 (1997)

A.Fujishima、Y.Fujishima、Jack.L Ferracane、T.Miyazaki、A.Shiba：“影响树脂贴面 Silicoater MD 与 cp Ti 粘合的因素”J Showa Dent Soc。

Akihiro Fujishima: "Factors affecting the bonding of silicoater MD for resin veneering to cp titanium" J.Showa Univ.Dent.Soc. 17. 41-47 (1997)

Akihiro Fujishima：“影响树脂贴面用硅涂层机 MD 与 cp 钛的粘合的因素”J.Showa Univ.Dent.Soc。