Zhao Man, Zheng Yaqi, Zhang Jia-Feng, Ou Xing, Gao Xing, Zhang Bao, Cao Yang
Department of Stomatology, The People's Hospital of Longhua Shenzhen, Shenzhen, China.
National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, School of Metallurgy and Environment, Central South University, Changsha, China.
Ann Transl Med. 2022 Jan;10(2):87. doi: 10.21037/atm-22-72.
To explore the effect of adhesive surface with porcelain sintering and different silane coupling agents on adhesive properties of zirconia ceramics.
Zirconia blocks (n=72) were randomly divided into two large groups (n=36) according to whether the adhesive surface was treated with sintered porcelain: N (no porcelain sintering), P (porcelain sintering). Then, according to different silane coupling agents, each group was randomly divided into three small groups, six small groups in total (n=12): NN (no porcelain sintering and agent), NM (no porcelain sintering + Monobond-S), NC (no porcelain sintering + Clearfil Repair); PN (porcelain sintering + no agent), PM (porcelain sintering + Monobond-S), PC (porcelain sintering + Clearfil Repair). After surface treatment, RelyX Unicem Cement was used to make ceramic-resin bonding specimens. Then, each of the six small groups was randomly divided into two subgroups; shear bond strength (SBS) was tested and bond failure mode was analyzed before and after thermal cycling 5,000 times.
(I) SBS analysis: the SBS values of the P groups were significantly higher than those of the N groups (P<0.05). The groups treated with silane coupling agents showed higher SBS values than the control group (P<0.05), and the PC groups showed the highest SBS values (P<0.05). The SBS of each group was significantly decreased after thermal cycling (P<0.05). (II) The microcharacteristics under scanning electron microscopy and energy spectrum analysis: the ceramic blocks being treated by porcelain sintering showed more roughness than the control group. A large amount of silicon (Si) appeared on the surface of the ceramic blocks after porcelain sintering.
(I) Treating the adhesive surface by porcelain sintering can improve the bonding strength between zirconia and RelyX Unicem Cement, and the effect was better in conjunction with silane coupling agent. (II) The two kinds of silane coupling agent (Monobond-S, Clearfil Repair) can improve the bonding strength between zirconia and resin cement. The effect of Clearfil Repair is better than that of Monobond-S. (III) Thermal cycling had a significant adverse effect on SBS between zirconia and RelyX Unicem Cement. Clearfil Repair is helpful in improving the durability of zirconia bonding strength.
探讨瓷烧结及不同硅烷偶联剂处理的粘结面对氧化锆陶瓷粘结性能的影响。
将72块氧化锆块体根据粘结面是否经过瓷烧结随机分为两大组(n = 36):N组(未进行瓷烧结)、P组(进行瓷烧结)。然后,根据不同硅烷偶联剂,每组再随机分为三个小组,共六个小组(n = 12):NN组(未进行瓷烧结且未使用偶联剂)、NM组(未进行瓷烧结 + 单组分硅烷偶联剂Monobond - S)、NC组(未进行瓷烧结 + 树脂粘结剂Clearfil Repair);PN组(进行瓷烧结 + 未使用偶联剂)、PM组(进行瓷烧结 + Monobond - S)、PC组(进行瓷烧结 + Clearfil Repair)。表面处理后,使用RelyX Unicem粘结剂制作陶瓷 - 树脂粘结试件。然后,将六个小组中的每一组随机分为两个亚组;测试剪切粘结强度(SBS),并分析5000次热循环前后的粘结失效模式。
(I)SBS分析:P组的SBS值显著高于N组(P < 0.05)。使用硅烷偶联剂处理的组SBS值高于对照组(P < 0.05),且PC组的SBS值最高(P < 0.05)。热循环后每组的SBS均显著降低(P < 0.05)。(II)扫描电子显微镜及能谱分析下的微观特征:经过瓷烧结处理的陶瓷块体比对照组表现出更多粗糙度。瓷烧结后陶瓷块体表面出现大量硅(Si)。
(I)通过瓷烧结处理粘结面可提高氧化锆与RelyX Unicem粘结剂之间的粘结强度,与硅烷偶联剂联合使用效果更佳。(II)两种硅烷偶联剂(Monobond - S、Clearfil Repair)均可提高氧化锆与树脂粘结剂之间的粘结强度。Clearfil Repair的效果优于Monobond - S。(III)热循环对氧化锆与RelyX Unicem粘结剂之间的SBS有显著不利影响。Clearfil Repair有助于提高氧化锆粘结强度的耐久性。