Atmospheric plasma treatment: an alternative of HF etching in lithium disilicate glass-ceramic cementation

作者全名："Wu, Xiaoqian; Liu, Kun; Luo, Rui; Xu, Jianhao; Chen, Mingsheng"

作者地址："[Wu, Xiaoqian; Luo, Rui; Xu, Jianhao; Chen, Mingsheng] Chongqing Med Univ, Stomatol Hosp, Chongqing, Peoples R China; [Wu, Xiaoqian] Univ Elect Sci & Technol China, Chengdu Womens & Childrens Cent Hosp, Sch Med, Chengdu, Peoples R China; [Liu, Kun] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Sec, Chongqing, Peoples R China"

通信作者："Chen, MS (通讯作者)，Chongqing Med Univ, Stomatol Hosp, Chongqing, Peoples R China."

来源：FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY

ESI学科分类：Multidisciplinary

WOS号：WOS:001125644400001

JCR分区：Q1

影响因子：5.7

年份：2023

卷号：11

期号：　

开始页：　

结束页：　

文献类型：Article

关键词：lithium disilicate; non-thermal plasmas; resin cements; shear bond strength; wettability; X-ray photoelectron spectroscopy (XPS)

摘要："Objectives: This study aimed to investigate whether the atmospheric pressure plasma jet (APPJ) could modify the surface of lithium disilicate glass ceramics (LDC) instead of hydrofluoric acid (HF) in LDC resin cementation.Methods: Two hundred and thirty-two LDC blocks were randomly divided into seven groups: Group 1 (16 specimens) was the blank control group (without HF or APPJ treatment); Group 2 (36 specimens) was etched by HF; Groups 3-7 (36 specimens each) were treated with APPJ, and the relative air humidity (RAH) of the discharge was 22.8%, 43.6%, 59.4%, 75.2%, and 94.0%, respectively. Three LDC blocks in each group were characterized via X-ray photoemission spectroscopy (XPS) analyses, 3 blocks via contact angle measurements, and other 10 blocks via surface roughness measurements. The residual LDC blocks in groups 2-7 were cemented to composite cylinders. Testing the cemented specimens' shear bond strength (SBS) before and after thermocycling (6,500 cycles of 5degree celsius and 55degree celsius ) revealed fracture patterns. Data were analyzed by ANOVA (post hoc: Bonferroni) (alpha = 0.05).Results: After APPJ treatment, the water contact angle values of APPJ treated blocks dropped from 31.37(degrees) to 5.66(degrees), while that of HF etched ones dropped to 18.33(degrees). The O/C ratio increased after HF etching or APPJ treatment according to the calculated results, except for the APPJ-treated samples at a RAH of 22.8%. The surface roughness of LDC blocks showed no statistic difference before and after APPJ treatment, but experienced significant difference after HF etching. The O/Si and O/C ratios varied after HF etching or APPJ treatment. No significant difference in SBS values could be found among groups 2-7 before or after artificial aging (p > 0.05). All specimens showed mixed failure patterns.Conclusion: The APPJ treatment method reported in this study is a promising novel strategy for surface modification of the LDC. With acceptable bonding strength, it might be an alternative to HF in LDC-resin cementation."

基金机构：Chongqing Natural Science Foundation Committee [cstc2021jcyj-msxmX0237]; Chongqing Education Commission [KJQN2021OO444]

基金资助正文："The author(s) declare financial support was received for the research, authorship, and/or publication of this article. Chongqing Natural Science Foundation Committee, cstc2021jcyj-msxmX0237; Chongqing Education Commission, KJQN2021OO444."