[计算机辅助设计与制造（CAD/CAM）钛合金表面处理及树脂粘结剂对复合树脂剪切粘结强度和耐久性的影响]

[Effects of CAD/CAM titanium alloy surface treatment and resin luting on shear bond strength and durability of composite resin].

作者信息

Li B B, DI P

机构信息

Department of Oral Implantology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

Department of Oral Implantology, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China.

出版信息

Beijing Da Xue Xue Bao Yi Xue Ban. 2019 Feb 18;51(1):111-114. doi: 10.19723/j.issn.1671-167X.2019.01.020.

DOI:10.19723/j.issn.1671-167X.2019.01.020

PMID:30773554

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7433560/

Abstract

OBJECTIVE

To assess the effects of two surface treatments (sandblasting, SB; microarc-oxidation, MAO) and resin luting on shear bond strength and durability of titanium alloy and composite-resin.

METHODS

Eighty cylindrical titanium alloy specimens with a diameter of 10 mm and a height of 8 mm were fabricated by CAD/CAM technique. It was divided into two groups according to the surface treatment methods: sandblasting with Al2O3 particles on the surface of SB specimens; porous ceramic film structure could be formed on the surface of MAO specimens after surface treatment. Each group was classified into SB-resin luting-N group (not used), SB-resin luting-Y group (used), MAO-resin luting-N group (not used), MAO-resin luting-Y group (used) depending on whether or not resin luting was applied. Each specimen was bonded and cured with the Cemerage resin, and the shear bond strength after 0 and 5 000 thermocycling was tested. The results were statistically analyzed. The surface morphology of titanium alloy specimens before and after the shear bond strength test was observed by scanning electron microscopy (SEM).

RESULTS

The shear bond strength between titanium alloy and composite-resin was the highest in the SB combined with resin luting group after 0 thermocycling (16.2±1.8) MPa; was the lowest in MAO group after 5 000 thermocycling (8.9±1.5) MPa. The shear bond strength of SB and MAO surface treatment methods combined without resin luting group after 5 000 thermocycling were (10.7±2.2) MPa and (8.9±1.5) MPa, which were statistically lower than those in the thermocycling 0 (P=0.000 and P=0.001). The shear bond strength of SB and MAO surface treatment methods combined with resin luting group after 5 000 thermocycling were (15.5±2.1) MPa and (11.7±1.3) MPa, respectively, which were lower than those in the thermocycling 0 group, but there was no statistical significance (P=0.087 and P=0.234).

CONCLUSION

Both the surface treatment methods of SB and MAO combined with resin luting can improve the shear bond strength and durability of titanium alloy and composite-resin. The SB combined with resin luting is more significant. At present, the effect of SB is better than that of MAO due to the limitation of technical parameters of micro-arc oxidation.

摘要

目的

评估两种表面处理方法（喷砂处理、SB；微弧氧化处理、MAO）及树脂粘接剂对钛合金与复合树脂之间剪切粘结强度和耐久性的影响。

方法

采用CAD/CAM技术制作80个直径为10mm、高度为8mm的圆柱形钛合金试件。根据表面处理方法将其分为两组：SB组试件表面用Al₂O₃颗粒进行喷砂处理；MAO组试件表面处理后可形成多孔陶瓷膜结构。每组再根据是否应用树脂粘接剂分为SB-树脂粘接-N组（未使用）、SB-树脂粘接-Y组（使用）、MAO-树脂粘接-N组（未使用）、MAO-树脂粘接-Y组（使用）。每个试件用Cemerage树脂进行粘接和固化，并测试0次和5000次热循环后的剪切粘结强度。对结果进行统计学分析。通过扫描电子显微镜（SEM）观察钛合金试件在剪切粘结强度测试前后的表面形貌。

结果

钛合金与复合树脂之间的剪切粘结强度在0次热循环后，SB联合树脂粘接组最高，为（16.2±1.8）MPa；在5000次热循环后，MAO组最低，为（8.9±1.5）MPa。5000次热循环后，未使用树脂粘接剂的SB和MAO表面处理方法组的剪切粘结强度分别为（10.7±2.2）MPa和（8.9±1.5）MPa，统计学上低于0次热循环时（P = ⁰.⁰⁰⁰和P = ⁰.⁰⁰¹）。5000次热循环后，使用树脂粘接剂的SB和MAO表面处理方法组的剪切粘结强度分别为（15.5±2.1）MPa和（11.7±1.3）MPa，低于0次热循环组，但无统计学意义（P = ⁰.⁰⁸⁷和P = ⁰.²³⁴）。