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首页> 外文期刊>The Journal of Prosthetic Dentistry >Influence of different surface treatments on the short-term bond strength and durability between a zirconia post and a composite resin core material.
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Influence of different surface treatments on the short-term bond strength and durability between a zirconia post and a composite resin core material.

机译：不同表面处理对氧化锆柱和复合树脂芯材之间短期粘合强度和耐久性的影响。

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STATEMENT OF PROBLEM: Reliable bonding between zirconia posts and composite resin core materials is difficult to achieve because of the smooth surface texture and lack of silica content of zirconia posts. PURPOSE: The purpose of this study was to evaluate the effect of different surface treatments on the short-term bond strength and durability between a zirconia post and a composite resin core material. MATERIAL AND METHODS: Eighty zirconia posts were divided into 4 groups (n=20). Specimens received 1 of 4 different surface treatments: group AIRB, airborne-particle abrasion; group TSC-SIL, tribochemical silica coating (CoJet system) and silanization (ESPE Sil); group AIRB-BSIL, airborne-particle abrasion and MDP-containing primer (Clearfil SE Bond Primer)/silane coupling agent (Clearfil Porcelain Bond Activator) mixture application; and group TSC-BSIL, tribochemical silica coating and MDP-containing primer/silane coupling agent mixture application. Average surface roughness (Ra) of zirconia posts produced by airborne-particle abrasion or silica coating was measured using an optical profilometer. Composite resin core foundations (Build-it FR) were formed using transparent acrylic resin tubes (12mm in length and 7mm in diameter). Each group was further divided into 2 subgroups of 10 specimens and stored in distilled water at 37 degrees C, either for 24 hours or for 150 days with 37,500 thermal cycles between 5 degrees C and 55 degrees C, with a dwell time of 30 seconds. Following water storage, the specimens were sectioned perpendicular to the bonded interface into 2-mm-thick post-and-core specimens under water cooling. Push-out tests were performed with a universal testing machine at a crosshead speed of 0.5mm/min. Debonded post surfaces were examined with SEM. Data were analyzed with 1- and 2-way ANOVA and Tukey multiple comparison tests (alpha=0.05). RESULTS: No significant differences were detected between the Ra values of airborne-particle-abraded and silica-coated specimens (P=.781). The short-term mean bond strengths for group TSC-BSIL (27.1 +/- 3.2 MPa) and TSC-SIL (25.2 +/- 2.4 MPa) were statistically higher (P<.001) than AIRB-BSIL (23.3 +/- 2.2 MPa). The relatively high bond strengths for groups TSC-BSIL and TSC-SIL decreased significantly after 150 days of water storage to 13.5 +/- 1.6 and 11.8 +/- 1.2 MPa, respectively (P<.001). Durable bonding was obtained only in group AIRB-BSIL (21.8 +/- 2.7 MPa), which was also the only group demonstrating predominantly cohesive failures in the core material after long-term water storage. CONCLUSIONS: Data suggest that the short-term high bond strength obtained with a silane coupling agent or MPD-containing primer/silane coupling agent mixture to silica-coated zirconia posts was decreased with water storage and thermal cycling, whereas a durable bond could be obtained when an MPD-containing primer/silane coupling agent mixture was applied to the airborne-particle-abraded post surface.
机译：问题陈述：由于光滑的表面纹理和缺乏氧化锆柱的二氧化硅含量，难以实现氧化锆柱与复合树脂芯材之间的可靠结合。目的：本研究的目的是评估不同表面处理对氧化锆柱和复合树脂芯材之间短期粘合强度和耐久性的影响。材料与方法：将80个氧化锆柱分为4组（n = 20）。标本接受了4种不同的表面处理中的1种：AIRB组，机载颗粒磨损; TSC-SIL组，摩擦化学二氧化硅涂层（CoJet系统）和硅烷化（ESPE Sil）;组AIRB-BSIL，空气颗粒磨损剂和含MDP的底漆（Clearfil SE Bond Primer）/硅烷偶联剂（Clearfil瓷键活化剂）混合物应用; TSC-BSIL组，摩擦化学二氧化硅涂层和含MDP的底漆/硅烷偶联剂混合物的应用。使用光学轮廓仪测量通过气载颗粒磨损或二氧化硅涂层产生的氧化锆柱的平均表面粗糙度（Ra）。复合树脂芯基础（Build-it FR）使用透明的丙烯酸树脂管（长12mm，直径7mm）形成。将每组进一步分成10个样本的2个子组，并在37摄氏度的蒸馏水中保存24小时或150天，并在5摄氏度至55摄氏度之间进行37,500个热循环，保压时间为30秒。储水后，在水冷条件下，垂直于粘结界面将样品切成2毫米厚的柱芯样品。用万能试验机以0.5mm / min的十字头速度进行推出试验。用SEM检查剥离的柱表面。用1和2通方差分析和Tukey多重比较测试（alpha = 0.05）分析数据。结果：气载颗粒和二氧化硅涂层样品的Ra值之间没有发现显着差异（P = .781）。 TSC-BSIL组（27.1 +/- 3.2 MPa）和TSC-SIL（25.2 +/- 2.4 MPa）的短期平均粘合强度在统计学上高于AIRB-BSIL（23.3 +/-）（P <.001） 2.2 MPa）。储水150天后，TSC-BSIL和TSC-SIL组的相对较高的结合强度显着降低，分别降至13.5 +/- 1.6和11.8 +/- 1.2 MPa（P <.001）。仅在AIRB-BSIL组（21.8 +/- 2.7 MPa）中获得了持久的粘合力，这也是唯一表明长期储水后核心材料内聚力破坏主要的组。结论：数据表明，硅烷偶联剂或含MPD的底漆/硅烷偶联剂混合物与二氧化硅涂覆的氧化锆柱的短期高结合强度随储水和热循环而降低，而可以获得持久的结合当将含有MPD的底漆/硅烷偶联剂混合物施涂到气载颗粒的柱子表面上时。

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