不同表面处理方式对氧化锆与树脂水门汀粘接强度的影响

目的:比较不同表面处理方式对氧化锆与树脂水门汀粘接强度的影响。方法:将102个氧化锆试件随机分为五组（A、E组各21个试件,B、C、D组各20个试件）。A组不做处理,B、C、D、E分别接受硅烷偶联剂、喷砂、喷砂+硅烷偶联剂、硅涂层+硅烷偶联剂4种表面处理。A、E组各随机抽取一个试件做能谱分析,其余试件和B、C、D组的试件用Rely^TMX Unicem粘接,经37℃恒温水浴24h后测试各组剪切粘接强度,随后通过显微镜观察各试件粘接界面的破坏形式,所得数据应用SPSS13.0软件进行统计分析。结果:各组的剪切粘接强度分别为:A组（3.41±0.32）MPa,B组（3.63±0.34）MPa,C组（6.21±0.29）MPa,D组（6.27±0.21）MPa,E组（6.92±0.43）MPa,A、B组与C、D、E组,C、D组与E组之间的差异有统计学意义,而A组与B组、C组与D组之间的差异无统计学意义,硅涂层组的粘接剪切强度最高。硅涂层后氧化锆表面Si元素的含量提高。各组粘接界面破坏形式以界面破坏为主,喷砂处理过的试件有混合破坏情况出现,硅涂层组3种破坏形式皆有出现。结论:不同表面处理方式对氧化锆与树脂水门汀之间的粘接强度和粘接界面破坏形式均有影响。     

不同表面处理方法对纳米复合陶瓷与树脂水门汀粘接强度的影响

目的 评估不同表面处理对纳米复合陶瓷与树脂水门汀剪切粘接强度的影响。方法 将纳米复合陶瓷用计算机辅助设计/计算机辅助制作（CAD/CAM）技术切割成大小为10 mm×10 mm×3 mm的试件150块,并根据表面处理方法不同将试件按随机数字表的方法随机分为5组（n=30）：对照组、喷砂组、喷砂+硅烷组、酸蚀组和酸蚀+硅烷组。各组试件经过相应表面处理后,使用Single Bond Universal通用粘接剂+RelyX ^TM Ultimate Cliker ^TM树脂水门汀将树脂试件粘接于纳米复合陶瓷试件上,37 ℃蒸馏水中水浴24 h和30 d,万能试验机进行剪切粘接强度测试。结果 不同表面处理方法、不同的水浴时间都会影响到剪切粘接强度。喷砂+硅烷组的剪切粘接强度最大,与其他各组间差异均具有统计学意义（P<0.05）;对照组和酸蚀组间差异无统计学意义,但两组与其他组间差异具有统计学意义（P<0.05）;喷砂组和酸蚀+硅烷组之间差异无统计学意义（P>0.05）,但两组与其他组间差异具有统计学意义（P<0.05）。结论 喷砂、喷砂+硅烷、酸蚀+硅烷对纳米复合陶瓷表面处理,均可提高其与树脂水门汀的剪切粘接强度,喷砂+硅烷处理后剪切粘接强度最佳。     

Porcelain repair - Influence of different systems and surface treatments on resin bond strength

PURPOSE

The purpose of this study was to evaluate the bond strength of composite resin on the fracture surface of metal-ceramic depending on the repair systems and surface roughening methods.

MATERIALS AND METHODS

A total of 30 disk specimens were fabricated, 15 of each were made from feldspathic porcelain and nickel-chromium base metal alloy. Each substrate was divided into three groups according to the repair method: a) application of repair system I (Intraoral Repair Kit) with diamond bur roughening (Group DP and DM), b) application of repair system I with airborne-particle abrasion (Group SP and SM), and c) application of repair system II (CoJet Intraoral Repair System, Group CP and CM). All specimens were thermocycled, and the shear bond strength was measured. The data were analyzed using the Kruskal-Wallis analysis and the Mann-Whitney test with a significance level of 0.05.

RESULTS

For the porcelain specimens, group SP showed the highest shear bond strength (25.85 ± 3.51 MPa) and group DP and CP were not significantly different. In metal specimens, group CM showed superior values of bond strength (13.81 ± 3.45 MPa) compared to groups DM or SM.

CONCLUSION

Airborne-particle abrasion and application of repair system I can be recommended in the case of a fracture localized to the porcelain. If the fracture extends to metal surface, the repair system II is worthy of consideration.     

Influence of different surface treatments on the short-term bond strength and durability between a zirconia post and a composite resin core material

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.     

Effect of different ceramic surface treatments on resin microtensile bond strength.

PURPOSE: The objective of this study was to evaluate the effect of different surface treatments on the microtensile bond strength (micro-tbs) of composite bonded to hot-pressed ceramic. The null hypothesis tested was that neither of the surface treatments (silanization or fluoric acid etching) would produce greater bond strength of composite resin to the ceramic. MATERIALS AND METHODS: Four 7 x 7 x 5 mm hot-pressed ceramic blocks of IPS Empress 2 were fabricated and polished to 600 grit followed by sandblasting with 50 microm alumina. The ceramic blocks were then divided into four groups and submitted to the following surface treatments: Group 1: 9.5% hydrofluoric (HF) acid for 20 seconds and silane (S) for 3 minutes; Group 2: silane for 3 minutes; Group 3: 9.5% HF acid for 20 seconds; Group 4: no treatment. Scotchbond adhesive was applied to the treated ceramic surfaces and covered with Filtek Z250 composite resin. The composite-ceramic blocks were cut with an Isomet low speed diamond saw machine producing sticks (n = 25), which were loaded to failure under tension in an Instron Universal testing machine. The mean micro-tbs was analyzed with one-way ANOVA and Bonferroni "t" test. RESULTS: All specimens of Group 4 experienced adhesive failure during the cutting of the block and were eliminated. The mean micro-tbs and standard deviations (SD) in megaPascals were: Group 1 = 56.8 (+/-10.4), Group 2 = 44.8 (+/-11.6), Group 3 = 35.1 (+/-7.7). Statistical analysis showed that the bond strength was significantly affected by surface treatment (p < 0.0001). Group 1 (HF + S) had the highest micro-tbs, and Group 2 (S) had higher micro-tbs than Group 3 (HF). The mode of fracture of the specimens was examined using scanning electron microscopy (SEM), and all fractures occurred within the adhesion zone. Conclusion: The results show that surface treatment is important for resin adhesion to ceramic and suggestthat silane treatment was the main factor responsible for resin bonding to ceramic.     

不同树脂水门汀和瓷表面处理对玻璃陶瓷粘结强度的影响

目的：评价4种不同的树脂水门汀以及2种不同的瓷表面处理方法对玻璃陶瓷粘结强度的影响。方法：选用IPse．Max Press热压铸瓷制作直径分别为5mm和4mm,高2mm的圆柱形瓷片。经打磨抛光后分为喇大组：（1）4％氢氟酸酸蚀40sec,（2）4％氢氟酸酸蚀40sec＋硅烷化处理1min。各组内分别选用VariolinkII,Multflink Sprint,RelyX Unicem,BisCem将大小瓷片成对粘固。再分别经37℃水储24h,以及水储后冷热循环5000次测定剪切强度,并用电镜观察瓷片表面形态。结果：硅烷化处理能明显提高粘结强度。经HF＋硅烷处理后Multflink Sprint（31．7±4．5MPa）,BisCem（29．2±4．4MPa）和RelyX Unicem（28．1±5．5MPa）3组显示出较VafiolinkII（21．8±4．2MPa）高的粘结强度。冷热循环后除硅烷处理且用VariolinkII和RelyX Unicem粘固的实验组外,其余各组粘结强度均显著下降。结论：4种树脂水门汀与经HF和硅烷联合处理的玻璃陶瓷问能达到理想的粘结强度。     

Durability of the resin bond strength to zirconia ceramic after using different surface conditioning methods.

OBJECTIVES: The purpose of this in vitro study was the evaluation of the bond strength and its durability of two composite resins to zirconia ceramic after using different surface conditioning methods. METHODS: Plexiglas tubes filled with composite resin were bonded to zirconia ceramic discs (Cercon) which were either in their original state as supplied by the manufacturer only cleaned in isopropanol or were cleaned with an air-powder-water spray with sodium hydrocarbonate solution or were air abraded (50 microm Al(2)O(3)). Groups of 20 specimens each were bonded either with a conventional composite resin (Variolink II) or with a phosphate monomer (MDP)-containing resin (Panavia F) to the ceramic discs. Subgroups of 10 bonded specimens were stored in distilled water (37 degrees C) for either 3 days or for 150 days. Additionally, the 150 days specimens were thermal cycled 37,500 times. Statistical analyses were conducted with the Wilcoxon rank sum test adjusted by Bonferroni-Holm. RESULTS: The initial tensile bond strength (TBS) for Variolink II ranged from 9.0 to 16.6 MPa and were significantly lower (p< or =0.05) than for Panavia F ranging from 18.7 to 45.0 MPa. Air abrasion resulted in significantly higher TBS (p< or =0.01) than the two other surface conditioning methods. After 150 days storage, only the air abraded specimens bonded with Panavia F showed high bond strengths of 39.2 MPa, whereas most other specimens debonded spontaneously or showed very low bond strengths. SIGNIFICANCE: The use of the MDP-containing composite resin Panavia F on air abraded zirconia ceramic can be recommended as promising bonding method.     

硅酸盐陶瓷表面不同粗化处理对其粘接强度影响的研究

目的:本实验的目的是研究瓷表面进行不同的表面粗化处理对其与树脂粘接剂粘接强度的影响.方法:VITA金属烤瓷四块(15mm×7mm×5mm)根据表面粗化方式的不同随机分为五组:无表面处理组(对照组)、喷砂-Porcelain Primer+FL-BONDⅡ组(S-PF组)、喷砂-HF+Porcelain Primer+FL-BONDⅡ组(S-H-PF组)、车针打磨-Porcelain Primer+FL-BONDⅡ组(B-PF组)、车针打磨-HF+Porcelain Primer+FL-BONDⅡ组(B-H-PF组).每组9个样本,采用微拉伸测力仪测力,所得数据采用方差分析进行统计学分析.采用扫描电子显微镜SEM观察瓷-树脂粘接界面的微观形貌.结果:结果显示对照组的粘接强度(17.0±1.7)MPa,S-PF组的粘接强度(24.1±3.5)MPa,S-H-PF组的粘接强度(24.5±4.2)MPa;B-PF组的粘接强度(24.2±4.4)MPa,B-H-PF组的粘接强度(29.9±7.5) MPa,粘接强度最大(P＜0.05).扫描电子显微镜(Scanning Electron Microscope,SEM)显示B-H-PF组获得最佳的粘接界面质量,其界面均匀、致密,未出现明显的裂隙,其他各组界面现不同程度的微小裂隙.结论:瓷表面经不同表面粗化处理对其粘接强度存在一定的影响,车针打磨结合HF可获得较好的粘接效果.     

Influence of different surface treatments on surface zirconia frameworks

Objectives

To evaluate the effect of different chemo-mechanical surface treatments of zirconia ceramic in the attempt to improve its bonding potential.

Methods

Sintered zirconium oxide ceramic discs (Lava™ Ø10 mm × 1 mm height) were treated with (n = 4): (1) airborne particle abrasion with 125 μm Al₂O₃ particles; (2) 9.5% HF acid etching; (3) selective infiltration etching (SIE); (4) experimental hot etching solution applied for 10, 30 and 60 min; (5) no treatment.Ceramic discs surfaces were analyzed by atomic force microscopy (AFM) recording average surface roughness measurements of the substrate. Data were statistically analyzed by Kruskall–Wallis analysis of variance and Mann–Whitney tests (α = 0.05). The same discs were used for bi-dimensional zirconia ceramic surface characterization with scanning electron microscope (SEM).

Results

Ceramic surface treatments significantly influenced surface topography and roughness (p < 0.001). Bi-dimensional changes in ceramic surface morphology were assessed on a nanometric scale. The experimental hot etching solution improved surface roughness, independently from the application time.

Conclusion

Zirconia conditioning with the experimental hot etching solution may enhance ceramic roughness and improve the surface area available for adhesion allowing the formation of micromechanical retention. The influence of this surface treatment with regard to bond strength of zirconia needs to be addressed.     

不同人工老化强度对氧化锆陶瓷粘结强度的影响

目的评价氧化锆陶瓷经几种表面处理后在不同强度的人工老化实验条件下的粘结耐久性。方法制备4组氧化锆陶瓷/树脂粘结试件128个,各组试件氧化锆陶瓷按照以下方式处理并使用不同种类的树脂水门汀。组A,摩擦化学法硅涂层+硅烷偶联剂;组B,氧化铝喷砂;组C,氧化铝喷砂+应用氧化锆涂底剂Z-Prime Plus;组D,氧化铝喷砂+应用氧化锆涂底剂Z-Prime Plus。组A和C使用传统Bis-GMA基光固化树脂水门汀,组B和D使用自粘结树脂水门汀。各实验组再分为4个亚组接受不同的人工老化。不接受人工老化(a),水储40 d(b);冷热循环1 200次(c);水储40 d后冷热循环12 000次(d)。测试各组剪切粘结强度值并进行统计学分析。摩擦化学法硅涂层和氧化铝喷砂的氧化锆陶瓷表面以扫描电镜观察并进行能谱分析。结果不论接受或不接受人工老化,4种表面处理间对氧化锆陶瓷的粘结强度值影响无统计学差异。各实验组单独来看,仅有人工老化方式d时粘结强度值都出现了下降,差别具有统计学意义。结论不同人工老化强度对氧化锆陶瓷粘结强度的影响不同。     

Influence of surface treatments on the bond strength of repaired resin composite restorative materials

ObjectivesThe purpose of this study was to investigate the effect of different surface treatments on the bond strength (σ) of repaired, aged resin composites (ARC).MethodsForty blocks of Filtek Z250? (Z2) and Filtek Supreme? (SU) were made, stored in deionized water for 9 days, and randomly assigned to different surface treatment groups: hydrofluoric acid etching (HA), abrasion using a coarse diamond bur (AB), sandblasting with alumina particles (AO), and silica coating (SC). The average roughness (Ra) of the treated surfaces was measured with a profilometer. An adhesive system (SB-Adper Single Bond Plus?), a silane (SI) or a combination of both (SI + SB) were applied after each surface treatment. The blocks were restored with the same composite (RC) and cut to produce bars that were turned into dumbbell-shaped specimens (0.5 mm²) using a precision grinding machine. The specimens (n = 30) were tested in tension to fracture and the microtensile bond strength (σ) values were calculated (MPa). Data were analyzed using three-way ANOVA/Tukey test (α = 0.05) and Weibull statistics.ResultsAO and SC produced similar Ra values, which were greater than the value produced by HA. The σ values were statistically influenced by the type of RC (p < 0.0001), by the surface treatment (p < 0.0001) and by the surface coating (p < 0.0001). Treating the surface of Z2 with SC + SB produced the greatest m value.SignificanceAO and SC produced the greatest σ values, irrespective of the primer (SI, SB or SI + SB) used. Yet, the RC microstructure influenced the mean σ values, which were greater for Z2 than for SU. The HA should not be used for repairing ARC.     

热酸溶液蚀刻对氧化锆粘接强度的影响

目的 研究牙科氧化锆经3种酸溶液加热处理后与树脂的初期粘接强度和粘接耐久性。方法 将80枚氧化锆瓷片分为5组,进行不同的表面处理,随后制作陶瓷/树脂粘接试样。其中,A组：经H2SO4/（NH4）2SO4混合液热处理,使用氧化锆底涂剂;B组：HF/HNO3混合液热处理,使用氧化锆底涂剂;C组：经H2SO4/HF/HNO3混合液热处理,使用氧化锆底涂剂;D组：氧化铝喷砂,使用氧化锆底涂剂;E组：摩擦化学法硅涂层,使用硅烷偶联剂。将粘接试样分为两部分,分别于水储24 h和40 d后进行剪切粘接强度（SBS）测试。扫描电镜（SEM）下观察3种酸处理和氧化铝喷砂处理氧化锆瓷片的表面形态。结果 老化前E组SBS最高,其余4组间差异无统计学意义;老化后A、B、E组显示了较高的SBS。水储老化40 d后A组和B组的SBS值较水储24 h时有显著性增加,剩余3组老化前后差异均无统计学意义。结论 热酸溶液蚀刻相对于喷砂的粗化方法能够显著提高氧化锆与树脂的初期粘接强度和粘接耐久性。     

不同表面处理方法对纤维桩与树脂黏结强度的影响

目的： 比较5种不同表面处理方法对纤维桩黏结强度的影响。方法：50根纤维桩按照表面处理方法的不同,随机分为5组,A组为硅烷偶联剂组（Clearfil Porcelain Bond Activator,Kuraray）,B组为硅烷偶联剂+黏结剂组（A+ Clearfil SE Bond,Kuraray）,C组为过氧化氢组（30%H₂O₂溶液）,D组为过氧化氢+硅烷偶联剂组（C+A）,E组为对照组。分别与树脂黏结剂黏结后,每组再平均分成2个小组,1组37℃生理盐水保存24 h后进行微拉伸强度测试,1组37℃生理盐水保存24 h后进行10000次冷热循环再进行微拉伸强度测试。采用SPSS17.0软件包对数据进行统计学分析。结果：冷热循环前A组~E组的微拉伸黏结强度分别为（6.7±0.7）、（14.4±1.1）、（10.7±0.9）、（16.0±1.0）和（6.7±1.0） MPa,冷热循环后,A组~E组的微拉伸黏结强度分别为（6.0±0.7 ）、（13.1±0.7）、（9.0±0.7）、（15.0±0.9 ） 和（5.6±0.7） MPa。除硅烷偶联剂组与对照组之间外,其余各组之间差异均有显著性（P<0.05）,其中,过氧化氢+硅烷偶联剂组黏结强度最大。各组之间在冷热循环前、后的微拉伸黏结强度差异均有显著性（P<0.05）。结论：温度疲劳循环可以降低5种表面处理的纤维桩与树脂间的黏结强度,30%H₂O₂溶液处理纤维桩后再使用硅烷偶联剂,可显著增加纤维桩与树脂之间的黏结强度。     

不同表面处理对LAVA树脂纳米瓷剪切强度的影响

目的 研究不同处理方式对树脂纳米瓷(LAVA Ultimate)与树脂水门汀粘接后剪切强度的影响。方法 本次实验分为喷砂实验和粘接实验两部分。将LAVA Ultimate切削成大小约6 mm×6 mm,高度约为2 mm的样本80片,依照不同的喷砂时间和喷砂气压随机分为4组,每组10个试件,使用3M Single Bond Universal+3M RelyX Ultimate与纳米树脂柱粘接后在万能试验机上测试断裂载荷,计算剪切强度,选出最高组。同等喷砂条件下40个样本随机分为A(Single Bond Universal(3M)+RelyX Ultimate(3M)),B (Porcelain Primer(Bisco)+All-bond Universal(Bisco)+RelyX Ultimate(3M))与纳米树脂柱进行粘接。粘接后再分成两个亚组,分别进行冷热循环5 000次和恒温水浴24 h。在万能试验机上测试断裂载荷,计算剪切强度,采用单因素方差分析对数据进行统计分析。结果 单因素方差分析结果表明不同喷砂条件的分组对剪切强度差异有统计学意义(第2组和第4组)(P=0.037...     

Microshear bond strength of resin bonding systems to machinable ceramic with different surface treatments

PURPOSE: The bond strength and bond durability of two high-viscosity dual-curing resin luting agents with different surface treatments of ceramic were investigated. MATERIALS AND METHODS: GN-I machinable ceramic surfaces were treated with 37% phosphoric acid for 30 s (PA), 5% hydrofluoric acid for 5 s (HF-5), 10 s (HF-10), or 30 s (HF-30), or blasting with 50-microm Al2O3 for 10 s (AB). The roughness of the ceramic surface was measured. Treated ceramic surfaces were bonded with three resin bonding systems (RBS): Ceramic Primer/LinkmaxHV (CP/LMHV), Monobond S/VariolinkIIHV (MBS/VLIIHV), or MBS/Heliobond/VLIIHV (MBS/HB/VLIIHV). A microshear test was used to measure the bond strength after 24 h (TC 0) and subsequent thermocycling (TC 10,000 at 4 degrees C and 60 degrees C). ANOVA was performed for statistical analysis, with significance set at p < 0.05. RESULTS: For three RBSs, bond strength at TC O was not affected, regardless of ceramic surface treatment (p > 0.05). All combined groups of ceramic surface treatment and resin bonding system decreased after 10,000 thermal cycles, especially groups treated with alumina blasting and bonded with each of three RBSs (p < 0.05). MBS/HB/VLIIHV with each surface treatment did not improve the bond strength and durability compared with MBS/VLIIHV. CONCLUSION: CP/LMHV and MBS/VLIIHV obtained sufficient bond strength and bond durability to GN-I machinable ceramic by only cleaning with PA; the application of HB may not be necessary.     

Influence of ceramic (feldspathic) surface treatments on the micro-shear bond strength of composite resin

Objective:To test the null hypothesis that surface treatment has no influence on the micro-shear bond strength between orthodontic composite resin cement and ceramics (feldspathic porcelain).Materials and Methods:Circular specimens of feldspathic porcelain were fabricated and randomly divided into six groups: (1) no treatment; (2) treatment with a mixture of acidic primer and silane agent for 20 seconds; (3) etching with 9.5% hydrofluoric acid; (4) etching with 9.5% hydrofluoric acid and coating with a mixture of acidic primer and silane agent for 20 seconds; (5) airborne-particle abrasion with 50-μm aluminum oxide; and (6) airborne-particle abrasion and coating with a mixture of acidic primer and silane agent for 20 seconds. The porcelain disks were then bonded to resin cylinders with composite resin cement. A micro-shear bond test was carried out to measure the bond strength. Moreover, each ceramic surface was observed morphologically by scanning electron microscopy. One-way analysis of covariance was used to compare the groups for differences in micro-shear bond strength.Results:The mean micro-shear bond strength varied as a function of surface treatment. It ranged from 3.7 to 20.8 MPa. The highest values for micro-shear bond strength were found when the surface was acid-etched with hydrofluoric acid and coated with silane. On the other hand, the control group (no treatment) had significantly lower micro-shear bond strength than all the other groups.Conclusion:The null hypothesis that the surface treatment has no influence on the micro-shear bond strength of orthodontic composite resin was rejected. The bond strength between ceramics and orthodontic resin cement is affected by the ceramic surface treatment. The bond failure was of the adhesive type, except with the hydrofluoric acid + silane group, where it was a cohesive bond failure.