J Adhes Dent. 2017;19(4):323-329. doi: 10.3290/j.jad.a38891.
To evaluate the efficacy of different surface treatments on the repair of veneered zirconia ceramics.
Forty-eight zirconia disks were divided into three groups according to the method of surface treatment: polished surface, air abraded, or ground using a special silicon carbide bur (SiC Grinding Bur). All specimens were primed using a primer containing MDP (Cimara Zircon, Voco) and then bonded to composite in Plexiglas tubes using dual-curing adhesive resin (Bifix QM, Voco). Each of the three groups was further divided into two subgroups (n = 8) stored either in water at 37°C for 3 days without thermocycling or stored in water at 37°C for 150 days with an additional 37,500 thermocycles between 5°C and 55°C. After storage, tensile bond strength (TBS) was measured in a universal testing machine.
After 3 days of storage, silicon carbide bur and air-abraded groups showed high TBS that ranged from 32.7 to 41.0 MPa (p ≤ 0.05). After 150 days of storage with thermocycling, the air-abraded group showed the most durable TBS (34.8 MPa), while the silicon carbide bur group showed a significant reduction in TBS (21.2 MPa); in the polished control group, specimens all debonded spontaneously during storage (p ≤ 0.05).
Repair of zirconia ceramic after chipping of its veneers showed durable TBS when surface conditioning with air abrasion or roughening of the zirconia surface with a silicon carbide bur was provided.
评估不同表面处理方法对修复饰面氧化锆陶瓷的疗效。
将 48 个氧化锆圆盘按表面处理方法分为三组：抛光面、喷丸处理面或使用特殊碳化硅车针（SiC Grinding Bur）打磨面。所有标本均用含 MDP 的底漆（Cimara Zircon，Voco）预处理，然后用双固化粘接树脂（Bifix QM，Voco）将其粘接在有机玻璃管中的复合树脂上。三组进一步分为两个亚组（n = 8），分别在 37°C 水中储存 3 天，不进行热循环，或在 37°C 水中储存 150 天，再进行 37500 次 5°C 至 55°C 的热循环。储存后，在万能试验机上测量拉伸结合强度（TBS）。
储存 3 天后，碳化硅车针和喷丸处理组的 TBS 较高，范围在 32.7 至 41.0 MPa（p ≤ 0.05）。储存 150 天并进行热循环后，喷丸处理组显示出最持久的 TBS（34.8 MPa），而碳化硅车针组的 TBS 显著降低（21.2 MPa）；在抛光对照组中，所有标本在储存过程中均自发脱粘（p ≤ 0.05）。
当通过喷丸处理或使用碳化硅车针对氧化锆表面进行粗化对其贴面崩瓷进行表面处理时，修复氧化锆陶瓷可获得持久的 TBS。
