Nd:YAG激光对自黏结树脂水门汀与牙本质黏结强度的影响

目的:采用剪切强度实验和扫描电镜,评价脉冲Nd:YAG激光对自黏结树脂水门汀与牙本质之间黏结强度的影响。方法:选择新鲜、无龋、无裂纹的人离体前磨牙10颗,分为颊、舌2部分,暴露牙本质黏结面,形成20个测试试件,随机分为激光组和对照组(n=10)。激光组以0.8W、10Hz脉冲Nd:YAG激光作用于涂墨汁的牙本质表面25s,联合自黏结树脂水门汀RelyX Unicem充填;对照组直接使用自黏结树脂水门汀RelyX Unicem充填于牙本质表面,放置在37℃生理盐水中24h后,测试剪切强度,在牙科显微镜下观察断裂模式并分类。采用SPSS 17.0软件包对数据进行统计学处理。最后,扫描电镜下观察试件的树脂水门汀-牙本质的纵剖面。结果:对照组和激光组的剪切强度分别为(9.48±1.80)MPa和(11.15±1.71)MPa,有显著差异(P<0.05)。牙科显微镜下观察,2组试件断裂大部分发生在树脂水门汀-牙本质界面。扫描电镜观察,2组自黏结树脂水门汀RelyX Unicem与牙本质之间结合较紧密,但均未见树脂突。结论:Nd:YAG激光(0.8W、10Hz)处理牙本质,能提高自黏结树脂水门汀RelyX Unicem与牙本质之间的黏结强度。     

Nd：YAG激光对自酸蚀粘结系统和牙本质粘结力的影响

目的探讨Nd：YAG激光对牙本质自酸蚀粘结系统的影响。方法选用因正畸拔除的新鲜前磨牙42颗，随机分为3组，每组14颗；牙面预备暴露牙本质；分别采用Adper^TM Prompt^TM粘结剂＋F2000树脂充填，Nd：YAG激光照射＋Adper^TM Prompt^TM粘结剂＋F2000树脂充填，Adper^TM Prompt^TM粘结剂＋Nd：YAG激光照射＋F2000树脂充填。评价各组树脂与牙本质之间剪切强度。结果Nd：YAG激光照射＋Adper^TM Prompt^TM粘结剂＋F2000树脂充填组的剪切强度明显大于其余2组，其余2组之间剪切强度对比无明显差异。结论先采用脉冲Nd：YAG激光照射后使用Adper^TM Prompt^TM粘结剂组获得最大粘结力。     

3种树脂水门汀对CAD/CAM全瓷-牙本质剪切强度的比较

目的:评价3种树脂水门汀对CAD/CAM全瓷-牙本质剪切强度的影响。方法:选取新鲜拔除的人磨牙30颗,制备牙本质黏结面,随机分为3组(n=10),分别选用全酸蚀树脂水门汀RelyX ARC、自酸蚀树脂水门汀Clearfil DCBond和自黏结树脂水门汀RelyX Unicem对CAD/CAM硅酸锂玻璃全瓷进行黏结,测试3种树脂水门汀对CAD/CAM全瓷-牙本质的剪切强度,并通过立体显微镜观察牙本质的黏结界面。采用SPSS11.0软件包对数据进行统计学分析。结果:RelyX ARC组的剪切强度为(15.90±6.15)MPa,Clearfil DC Bond组的剪切强度为(14.41±5.07)MPa,而RelyXUnicem组的剪切强度为(23.29±7.39)MPa,与前2组相比有显著性差异(P<0.05)。立体显微镜观察显示,3组黏结断面均位于牙本质与树脂水门汀之间。结论:自酸蚀树脂水门汀及自黏结树脂水门汀与CAD/CAM硅酸锂玻璃陶瓷修复体的黏结强度不低于传统全酸蚀树脂水门汀,且临床操作简便,为临床全瓷黏结提供了更多便利与选择。     

四种树脂水门汀黏结牙本质剪切强度的比较

目的:评价4种树脂水门汀与牙本质黏结剪切强度。方法:新鲜拔除的无龋损人第三磨牙48个,随机分为4组(n=12),制备颊侧牙本质黏结面,分别与4种树脂水门汀(Unicem、Panavia F、VariolinkⅡ、Vitique)黏结处理,测试剪切强度,SEM观察牙本质黏结界面。结果:4种树脂水门汀中RelyX Unicem(12.84±2.29)MPa与Panavia F(14.93±3.73)MPa、Vitique(11.03±2.57)MPa之间无显著性差异(P>0.05),而他们均显著高于VariolinkⅡ(5.43±1.25)MPa(P<0.05)。结论:新型自黏结树脂水门汀RelyX Unicem可以取得与牙本质良好的黏结效果,且美观,易于使用,节省操作时间,为黏结修复体提供了一种新的选择。     

两种树脂水门汀对纤维桩冠方微渗漏的影响

目的：通过观察两种树脂水门汀引起的纤维桩冠方微渗漏值及在扫描电镜下与牙本质的粘接界面,比较两种树脂水门汀的封闭性能。方法：42颗离体下颌前磨牙分成6组,其中30颗牙分为2组,分别用Panavia F、Paracore 5mL粘接纤维桩,经染色、透明化处理后,在体式显微镜下记录2组微渗漏得分;另有10颗牙分为2组,分别用Panavia F、Paracore 5mL粘接纤维桩后纵形剖开,置于扫描电镜下观察牙本质水门汀界面;其余2颗牙分别作为阳性对照组及阴性对照组。结果：Paracore 5mL引起的纤维桩冠方渗漏值明显较Panavia F小（P〈0.01）。两种树脂水门汀与牙本质界面均可形成混合层,而仅Paracore 5mL组可发现树脂突及粘接性侧枝。结论：全酸蚀树脂水门汀对纤维桩冠方微渗漏的影响较自酸蚀树脂水门汀小;全酸蚀树脂水门汀与牙本质结合紧密,封闭性能较自酸蚀树脂水门汀优越。     

不同牙本质清洁剂对牙本质与自粘接树脂水门汀粘接强度的影响

目的 评价乙二胺四乙酸（EDTA）和次氯酸钠（NaClO）对自粘接树脂水门汀与牙本质间粘接强度的影响。方法 选择新鲜无龋、无裂纹的人离体前磨牙27颗,去除颊侧釉质,暴露浅层牙本质,随机分为对照组（A组）、EDTA组（B组）和NaClO组（C组）。分别选用蒸馏水、3%EDTA溶液和1%NaClO溶液处理牙本质表面后与自粘接树脂水门汀RelyX Unicem进行粘接,将其中24个试件置于37 ℃生理盐水中浸泡24 h后测定剪切强度,采用SPSS 17.0统计学软件对数据进行统计分析,在扫描电镜（SEM）和体视显微镜下分别观察粘接界面及断裂模式。结果 A组与B组的剪切强度分别为（8.55±0.63） MPa和（8.47±0.56） MPa,二者间差异无统计学意义（P>0.05）;C组的剪切强度为（12.97±0.59） MPa,与A组和B组间差异均有统计学意义（P<0.05）。SEM下观察可见,C组自粘接树脂水门汀RelyX Unicem与牙本质间结合紧密,但均未见树脂突,而A组与B组粘接界面均不理想。体视显微镜下观察可见,A组与B组试件破坏模式以内聚破坏为主,C组试件全部为内聚破坏。结论 1%NaClO处理牙本质可以提高自粘接树脂水门汀RelyX Unicem与牙本质之间的粘接强度,3%EDTA处理对提高自粘接树脂水门汀RelyX Unicem与牙本质之间的粘接强度无影响。     

Nd:YAG激光对水门汀与牙本质剪切强度的影响

目的:评价脉冲Nd:YAG激光对水门汀与牙本质间剪切强度的影响,并观察激光照射前后的牙本质表面结构变化。方法:取人前磨牙30个,暴露牙本质粘接面形成60个测试样本,随机分为激光组和对照组。激光组以0.8W、10Hz脉冲Nd:YAG激光照射牙本质表面25sec,联合3种水门汀充填;对照组直接使用3种水门汀充填于牙本质表面,置于37℃生理盐水24h后,测试剪切强度,并进行统计学分析,在根管显微镜下观察断裂模式并分类。扫描电镜观察激光照射前后的牙本质表面形态。结果:聚羧酸锌组、玻璃离子组和树脂加强玻璃离子组在Nd:YAG激光照射前(后)的剪切强度分别为4.63±1.39(4.77±0.97)MPa、5.15±0.67(5.26±1.21)MPa和0.92±0.46(0.99±0.35)MPa,激光照射前后的差别均无统计学意义(P>0.05)。扫描电镜观察,0.8W、10Hz的Nd:YAG激光照射会使牙本质表面熔融,玷污层基本去除,大部分牙本质小管封闭,且在局部会出现裂纹。结论:Nd:YAG激光(0.8W、10Hz)处理牙本质,对聚羧酸锌和玻璃离子水门汀与牙本质间的粘接强度无影响。     

桩道酸蚀处理对自粘接树脂水门汀与纤维桩粘接性能影响的研究

目的：比较桩道表面酸蚀处理对自粘接树脂水门汀RelyX Unicem与纤维桩之间粘接效果的影响。方法：选取36颗新鲜拔除的无龋坏单根管人前磨牙,常规根管充填与桩道预备后,使用磷酸酸蚀桩道,根据酸蚀时间的不同将试件随机分为3组（n＝12）：不酸蚀组（对照组,Et0）、酸蚀5秒组（Et5）、酸蚀20秒组（Et20）。各组试件粘接纤维桩后进行微推出粘接强度测试,扫描电镜（SEM）下观察粘接界面超微结构,X－射线能谱（EDX）分析粘接界面牙本质侧元素百分比含量。结果：Et0组微推出强度（8．27±1．88 MPa）显著高于Et5组（6．99±2．11 MPa）和Et20组（6．39±1．08 MPa）,差异均有统计学意义（P＜0．05）。Et5组微推出强度高于Et20组,但无统计学差异（P＞0．05）。扫描电镜观察见Et20组单位视野内树脂突数量多于Et0组、Et5组。Et5组和Et20组中可见树脂水门汀与根管牙本质间存在裂隙。X－射线能谱分析显示,随着酸蚀时间的延长,粘接界面处牙本质中钙含量百分比呈逐渐下降的趋势。结论：桩道酸蚀处理不能促进自粘接树脂水门汀RelyX Unicem与纤维桩的粘接效果。     

酸蚀处理对新型自粘结树脂水门汀粘结强度的影响

目的:评价酸蚀处理对新型自粘结树脂水门汀Unicem与牙本质和牙釉质之间粘结强度的影响。方法:选取新鲜拔除的无龋坏人第三磨牙36个,制备颊侧牙本质粘结面和近、远中牙釉质粘结面,随机分为3组,每组12个牙,分别选用Unicem、磷酸酸蚀配合Unicem和Panavia F(对照组)进行粘结处理,分别测试牙本质、牙釉质粘结强度,并通过扫描电镜观察粘结界面。结果:在牙本质粘结强度上,Unicem组(12.84±2.29 MPa)与Panavia F组(14.93±3.73 MPa)之间无显著性差异(P>0.05),但均显著高于磷酸酸蚀配合Unicem组(9.12±1.54 MPa)(P<0.05);牙釉质粘结强度上,磷酸酸蚀配合Unicem组(17.24±7.62 MPa)和Panavia F组(17.99±3.66 MPa)无显著性差异(P>0.05),但均显著高于Unicem组(6.47±1.54MPa)(P<0.05)。结论:酸蚀处理可以显著提高自粘结树脂水门汀Unicem牙釉质粘结强度,却降低了牙本质粘结效果。     

不同能量密度Nd:YAG激光照射对牙本质粘接强度的影响

目的:研究不同能量密度下Nd:YAG激光照射对牙本质粘接强度的影响。方法:36颗无龋第三磨牙去除冠方牙釉质,随机分为3组:对照组低能量密度激光照射组(1 W,85 J/cm²)和高能量密度激光照射组(4 W, 350 J/cm²)。每组牙再随机分为两个亚组,分别使用全酸蚀(Single Bond 2)或自酸蚀粘接剂(G-Bond)进行粘接以及树脂修复。进行微拉伸粘接强度测试,扫描电镜观察牙本质表面形貌及粘接界面纳米渗漏情况。激光扫描共聚焦荧光显微镜下观察粘接界面树脂突形态及数量。结果:全酸蚀粘接中,低密度激光照射对粘接强度无影响,高密度激光照射后粘接强度相比对照组降低(P<0.05);自酸蚀粘接中,低密度激光照射后粘接强度比对照组显著下降(P<0.05),高密度激光照射对粘接强度无影响。低密度激光照射不增加粘接界面纳米渗漏,高密度激光照射后样本纳米渗漏相比对照组均显著增加(P<0.05)。结论:低能量密度的激光照射后使用全酸蚀粘接系统粘接效果较好;高能量密度的激光照射后使用自酸蚀粘接系统效果较好。     

树脂类粘接剂对全瓷与牙本质之间粘接强度的影响

目的比较3种不同粘接剂对3种全瓷材料与牙本质之间抗剪切粘接强度的影响。方法样本为热压铸造陶瓷组、氧化铝渗透陶瓷组和氧化锆切削陶瓷组,每组各18片,各组再随机分为A、B、C3个小组,每小组6片。将收集的离体恒磨牙打磨至牙本质浅层,分别采用树脂类粘接剂RelyXTM ARC、PanaviaTMF以及Rely XTM Unicem与3种全瓷片粘接。所有试件均置于37℃人工唾液,24h后测试54个试件的抗剪切强度。结果热压铸造陶瓷组与氧化锆切削陶瓷组均为RelyXTM Unicem抗剪切粘接强度最高,而氧化铝渗透陶瓷组PanaviaTM F抗剪切粘接强度最高。结论对于3种不同全瓷材料,临床上可根据全瓷修复体的种类选择适当的粘接剂系统。     

Extrusion shear strength between an alumina-based ceramic and three different cements

STATEMENT OF PROBLEM: Surface treatment is an essential step in bonding a ceramic to resin. Alumina ceramics are particularly difficult to prepare for adequate bonding to composite resin cements. PURPOSE: The purpose of this study was to evaluate the bond strength between a densely sintered alumina ceramic and bovine dentin with 2 adhesive resin cements and a resin-modified glass ionomer cement using an extrusion shear strength test. MATERIAL AND METHODS: Alumina cones (n=30), 4 mm in height, 3 mm in diameter at the small end, and with an 8-degree taper, were fabricated. Without any treatment, the cones were cemented in a standardized cavity in 2.5-mm-thick bovine dentin discs using 1 of 3 cement systems: Panavia F, RelyX ARC, or RelyX Luting. The cements were manipulated following the manufacturers' instructions. After 24 hours of storage at 37 degrees C, an extrusion shear test was performed in a universal testing machine at 0.5 mm/min until bonding failure. The data were analyzed using 1-way ANOVA and Tukey HSD test (alpha=.05). All fractured specimens were examined at x25 magnification and classified by fracture mode. Representative specimens were selected for SEM observation. RESULTS: The highest strength values were obtained with Panavia F, and they were significantly higher (P<.05) than each of the other 2 cements, which were not significantly different from each other. Panavia F resulted in predominantly mixed failure and RelyX ARC and RelyX Vitremer showed primarily adhesive failure. CONCLUSIONS: An MDP-containing adhesive system (Panavia F) provides better extrusion bond strength to a high-density alumina ceramic than a Bis-GMA resin luting agent system (RelyX ARC) or a resin-modified glass ionomer cement system (RelyX Luting).     

Shear bond strength of resin cements to human dentin.

OBJECTIVES: The objectives of this in vitro study were (1) to assess the bond strength of the universal cement RelyX Unicem to dentin and to compare it with three conventional resin cements, (2) to test the influence of aging on their bonding capacity and (3) to test the influence of the operator on bonding quality by performing the same test in two different centers. METHODS: 160 third molars, divided into 80 for tests at the University of Zurich (Z) and 80 for tests at the University of Berne (B), were assigned to 2 x 8 subgroups of 10 teeth each. The specimens were prepared with the corresponding bonding agents and acrylic rods were luted either with RelyX Unicem (U), RelyX ARC (A), Multilink (M) or Panavia 21 (P). All specimens were stored in water for 24h (W) and half of the specimens were subjected to 1500 cycles of thermocycling (5 degrees C and 55 degrees C) (T). Bond strength was measured by means of a shear test. RESULTS: After water storage RelyX Unicem exhibited lowest bond strength (UWZ: 9.2+/-1.6 MPa, UWB: 9.9+/-1.2 MPa, AWZ: 15.3+/-6.0 MPa, AWB: 12.2+/-4.3 MPa, MWZ: 15.6+/-3.3 MPa, MWB: 12.4 MPa+/-2.4, PWZ: 13.4+/-2.9 MPa, PWB: 14.9+/-2.6 MPa). Thermocycling affected the bonding performance of all four cements. However, bond strength of RelyX Unicem was least influenced by thermocycling (UTZ: 9.4+/-2.9 MPa, UTB: 8.6+/-1.3 MPa, ATZ: 11.4+/-6.3 MPa, ATB: 13.3+/-3.7 MPa, MTZ: 15.4+/-3.1 MPa, MTB: 10.3+/-2.4 MPa, PTZ: 11.1+/-2.8 MPa, PTB: 11.3+/-2.8 MPa). SIGNIFICANCE: Although the bond strength of RelyX Unicem to dentin was lower in comparison to RelyX ARC, Multilink and Panavia 21, its bond strength was less sensitive to variations in handling and aging.     

不同脱敏方法对牙本质表面微结构形态及树脂粘接剂粘接力的影响

目的:观察涂用脱敏剂或激光脱敏的牙本质的微结构形态,评价脱敏剂及激光脱敏对树脂粘接剂粘接强度的影响。方法:离体牙去除颊面釉质暴露浅层牙本质。分别不做任何处理、用Gluma脱敏剂处理和用Nd:YAG激光处理。用扫描电镜观察处理牙本质表面和剖面的微观特征。分别用3种树脂粘接剂Rely XTMUnicem、Panavia F、Super-Bond C&B将铸件粘接到处理过的牙本质表面,测定样本的抗剪强度,用SPSS 11.5软件进行统计学分析。结果:Gluma组牙本质小管开口几乎堵塞;Nd:YAG激光处理组小管口熔融封闭或者变窄,照射集中区域出现凹坑状结构。使用Gluma脱敏剂后Super-Bond C&B抗剪强度增大(P<0.05)。使用Nd:YAG激光后3种树脂粘接剂粘接力无明显变化。结论:Gluma脱敏剂可增强Super-Bond C&B的粘接强度。Nd:YAG激光不影响3种树脂粘接剂的粘接强度。     

Bond strength and interfacial micromorphology of etch-and-rinse and self-adhesive resin cements to dentin

Purpose: To evaluate the microtensile bond strength and interfacial micromorphology of indirect composite restorations to dentin using three commercial resin cements after 24 hours and 30 days of water storage. Materials and Methods: The medium dentin of third human molars was exposed (N = 30, n = 10 per group). Three commercial resin cements were used to cement indirect resin composite restorations to dentin: the auto‐cured C&B Cement/All Bond 2, the dual‐cured RelyX ARC/Adper Single Bond 2, and the self‐adhesive dual‐cured RelyX Unicem. Teeth were sectioned after water storage at 37°C (24 hours and 30 days) to obtain beams with a bonded area of 0.8 mm². The specimens were tested in a universal testing machine at a 0.5 mm/min crosshead speed. Scanning electron microscopic fractographic and interfacial micromorphology analyses were performed. Data were analyzed using two‐way ANOVA and Tukey′s test (α= 0.05). Results: Mean bond strength (MPa) after 24 hours: C&B Cement 19.5 ± 3.8, RelyX ARC 40.8 ± 9.4, RelyX Unicem 31.3 ± 7.4; after 30 days: C&B Cement 24.5 ± 5.1, RelyX ARC 44.2 ± 8.5, RelyX Unicem 28.3 ± 7.1. The mean bond strengths of both dual‐cure cements were significantly higher than that obtained with C&B Cement after 24 hours. A significant increase in the bond strength of C&B Cement was verified after 30 days, reaching values statistically equivalent to those produced by RelyX Unicem and RelyX ARC. The self‐adhesive cement preserved the same level of bond strength after 30 days. Fractographic analysis revealed a prevalence of cohesive fractures in the hybrid layer for C&B Cement, mixed (cohesive in the cement, hybrid layer, and adhesive) for RelyX ARC, and cohesive in the cement for RelyX Unicem. No distinguishable hybrid layer or resin tags were observed in the interaction of RelyX Unicem with dentin. Conclusions: The particular interaction of each cement with dentin results in specific bond strength and failure patterns that varied among groups in both evaluation times. Even though the self‐adhesive cement tested exhibited no authentic hybrid layer, it was able to promote reliable adhesion with the underlying dentin.     

Morphological and bond strength evaluation of different resin cements to root dentin

This study correlated the morphological characteristics with the bond strengths of various resin cements used for bonding fiber posts to root canal dentin. Fifty glass-fiber posts (FRC Postec Plus) were luted into the root canals of extracted human anterior teeth using five resin cements ( n  = 10): Panavia F 2.0, PermaFlo DC, Variolink II, RelyX Unicem, and Clearfil Core. Before insertion of the post, the adhesive systems were labeled with fluorescein and the resin cement was labeled with rhodamine isothiocyanate. The roots were sectioned into three slices (of 2 mm thickness), and each slice was analyzed using confocal laser scanning microscopy in dual fluorescence mode to determine hybrid layer thickness, the number of resin tags, and the number of broken tags. Bond strengths were measured using a micro push-out test. Bond strengths to root canal dentin, as well as the morphological characteristics, were significantly affected by the materials. However, these factors did not correlate. The self-adhesive resin cement, which showed the formation of a hybrid layer and resin tags only sporadically, had the highest bond strengths. These results indicate that chemical interactions between the adhesive cement and hydroxyapatite may be more crucial for root dentin bonding than the ability of the same material to hybridize dentin.     

Adhesive bonding of resin cements to cast titanium with adhesive primers

The purpose of this study was to evaluate the effects of adhesive primer applications on the bond strength of resin cements to cast titanium. Four adhesive primers - Metaltite, Metal Primer II, Alloy Primer and Ceramic Primer - and their respective resin cements - Bistite II DC, Link Max, Panavia F 2.0, RelyX Unicem and RelyX ARC - were tested. Cast plates were prepared from titanium ingots (n=6 specimens/cement) and had their surfaces airborne-particle abraded with Al2O3 (50 μ m). Three resin cement cylinders were built on each bonded titanium surface, using a cylindrical translucent tubing mold and were subjected to micro-shear testing. Data were analyzed statistically by two-way ANOVA and Tukey's post-hoc test (α=0.05). The application of Metal Primer II and Ceramic Primer resulted in significant higher bond strength for Link Max and RelyX Unicem resin cements, respectively, than nonuse of adhesive primers. Panavia F 2.0 and RelyX ARC yielded high bond strength means with or without adhesive primers. The use of adhesive primers might increase the bond strength to cast titanium depending on the resin cement used.     

Effect of surface preparation on bond strength of resin luting cements to dentin

This study examined the effects of using two different burs for dentin surface preparation on the microtensile bond strength (microTBS) of three resin luting cements. Flat, deep dentin surfaces from 45 extracted human third molars were divided into three groups (n = 15) according to bur type: (i) diamond bur and (ii) tungsten carbide bur. The controls were abraded with #600-grit SiC paper. Both burs operated in a high-speed handpiece under water-cooling. Composite blocks were luted onto the dentin using one of three cements: RelyX ARC (ARC, 3M ESPE), Panavia F2.0 (PF, Kuraray) and RelyX Unicem (UN, 3M ESPE) following the manufacturers' instructions. For ARC, the dentin surface was treated with 32% phosphoric acid. The bonded specimens were stored at 37 degrees C for 24 hours and sectioned into 0.9 x 0.9 mm beams for microTBS testing. The data were analyzed using the two-way ANOVA and Student-Newman-Keuls tests. Representative fractured beams from each group were prepared for fractographic analysis under SEM. Two-way ANOVA revealed that the effects of "dentin surface preparation" and "luting cement" were statistically significant (p < 0.001); however, the interaction of these two factors was not significant (p > 0.05). ARC showed no significant difference in microTBS among the three differently prepared dentin surfaces. The microTBS of PF and UN was significantly lower when bonding to dentin prepared with a diamond bur (p < 0.05), compared to the control. For Panavia F2.0, higher bond strengths were achieved on the dentin surface prepared with a tungsten carbide bur. Proper bur selection is essential to optimizing the dentin adhesion of self-etch resin luting cements.     

Shear bond strength of composite resin cements to lithium disilicate ceramics

The aim of this study was to evaluate the shear bond strength of different commercial composite resin cement systems to lithium disilicate all-ceramic substrate. Five adhesive resin cement systems Panavia 21 and Panavia F (Kuraray), Variolink 2 (Ivoclar-Vivadent), RelyX Unicem Applicap and RelyX ARC (3M ESPE) were used on all-ceramic (IPS Empress 2; Ivoclar-Vivadent) substrate. Shear bond strength of adhesive resin cement to substrate was tested after thermocycling, or without thermocycling (n = 10). Substrate surfaces of the specimen after loading were SEM microscopically examined. The highest bond strengths in water stored conditions were obtained with RelyX ARC (28.7 +/-3.9 MPa), while in thermocycled conditions the highest bonding values were obtained with Variolink 2 (23.2 +/- 7.5 MPa). The lowest values in both water stored (5.8 +/- 4.0 MPa) and thermocycled (2.4 +/- 2.9 MPa) conditions were obtained with Panavia 21. Shear bond strengths appeared to be affected significantly by thermocycling (anova, P < 0.05). It was concluded that there were significant differences between the bond strengths of adhesive resin cements to lithium disilicate substrate.