酸蚀和粘结对陈旧性树脂表面粘结强度的影响

目的：研究不同的表面处理方式对陈旧性树脂与新鲜树脂间粘结强度的影响。方法：制备Z350纳米树脂样本40例,浸泡于37℃蒸馏水2个月,表面经金刚砂车针研磨后随机分为4组：A组（对照组）表面未经处理;B组表面仅涂布粘结剂;12组表面仅37％磷酸酸蚀;D组表面37％磷酸酸蚀后涂粘结剂。上述表面处理后使用新鲜树脂完成样本制备。万能材料试验机上测定材料的微拉伸强度。结果：仅涂粘结剂组微拉伸强度最大,对照组次之,仅酸蚀组最小,酸蚀后涂粘结剂组与对照组间无显著性差异。结论：表面使用粘结剂可明显提高陈旧性树脂与新鲜树脂间的粘结强度。     

表面处理对粘结剂与氧化锆粘结强度的影响

目的：评价出比较理想的粘结剂和ZrO2表面处理方法。方法：将由ZrO2制成的较大瓷片（120个）和较小瓷片（120个）,随机派对分成12组。对ZrO2的表面分别不作处理、喷砂、硅烷化,先喷砂后硅烷化处理。用Bifix QM、Super-BondC＆B和Panavia F三种树脂粘结剂将较小瓷片粘结在较大瓷片上。置于37℃蒸馏水里保存24h后,进行剪切粘结强度测试。结果：3种表面处理都提高了粘结强度（P〈0．01）,其中,先喷砂后硅烷化处理对粘结强度提高得最明显（P〈0．01）。Panavia F、Super-Bond C＆B与ZrO2的粘结强度明显高于BifixQM与ZrO2的粘结强度（P〈0．01）。结论：先喷砂后硅烷化处理是一种比较理想的表面处理方法,Panavia F、Super-Bond C＆B是比较理想的树脂粘结剂。     

不同表面处理和不同粘结剂对氧化锆粘结强度的影响

目的探讨不同表面处理和不同粘结剂对氧化锆粘结强度的影响。方法将氧化锆分别制成直径为12.0mm和4.0mm的瓷片,各120个,分别随机分成12组。粘结剂选用磷酸锌粘结剂、聚羧酸锌粘结剂、BifixQM和Super-Bond CB。对氧化锆的表面分别进行不处理、喷砂、硅烷化、先喷砂后硅烷化处理。用上述4种粘结剂将4.0mm瓷片粘结在12.0mm瓷片上,置于37℃蒸馏水中保存24h后,进行剪切粘结强度测试。结果粘结剂相同时,不同表面处理时的粘结强度有显著统计学差异(P0.01),由小到大依次为不处理喷砂硅烷化先喷砂后硅烷化处理;表面处理相同时,不同粘结剂之间的粘结强度有显著统计学差异(P0.01),由小到大依次为磷酸锌粘结剂聚羧酸锌粘结剂Bifix QMSuper-Bond CB。结论粘结剂相同时,表面处理提高了粘结强度。Super-Bond CB的粘结强度比较理想。使用Super-Bond CB时,喷砂后硅烷化处理是一种比较理想的表面处理方法。     

不同瓷粘结系统及表面处理方式对瓷与釉质间粘结强度的影响

目的 :探讨瓷与牙釉质粘结时不同瓷粘结系统与瓷表面处理方式的优化组合。方法 :以不同的瓷粘结系统和表面处理方式为影响因素 ,将瓷片分成 8组 ,分别与釉质粘结 ,测其剪切强度 ,统计分析所得数据 ,观察其断裂方式。结果 :处理组中以不喷砂磷酸酸蚀组的粘结强度最低 ,其余各组间无统计学差异。PanaviaF组剪切强度均值最高为 2 9.3 8MP ,邦多为 2 6.19MP。结论 :PanaviaF和邦多陶瓷粘结系统结合喷砂后磷酸酸蚀和HF酸蚀使用都可获得理想的粘结效果     

酸蚀时间对IPS-Empress 2牙科陶瓷与树脂粘结剂之间粘结强度的影响

目的观察9.6%氢氟酸溶液酸蚀不同时间对IPS-Empress 2牙科陶瓷与树脂粘结强度的影响.方法制作试验所需的IPS-Empress 2陶瓷试样高3 mm直径分别为5 mm(A组)和6 mm(B组)的盘状陶瓷块各36块.打磨抛光后A、B组试样各自随机分为6组,每组6块,分别给予9.6%氢氟酸酸蚀0 s、10 s、20 s、30 s、60 s、120 s后将A、B各酸蚀相同时间组的陶瓷块用复合树脂成对粘结.37 ℃水储24 h后用INSTRON万能测试机进行剪切实验并用扫描电镜观察其表面形态.结果酸蚀处理显著提高了陶瓷与树脂的粘结强度,酸蚀20 s组的试样显示出最高的剪切粘结强度(35.54±2.86) MPa.结论9.6%氢氟酸酸蚀20 s能使IPS-Empress 2陶瓷与树脂之间达到最大粘结强度.     

3种自酸蚀粘结剂粘结托槽的剪切强度比较

目的:比较3种自酸蚀粘结剂粘结正畸托槽时的剪切粘结强度。方法:将36颗人前磨牙随机均分为3组,分别用3种自酸蚀粘结剂:改良一步法自酸蚀粘结系统Adper Prompt L-Pop Self Etch Adhesive(组1)、释氟抗菌型自酸蚀粘结系统Clearfil Protect Bond(组2)、释氟型自酸蚀粘结系统Transbond Plus Self Etching Primer(组3)粘结金属托槽,用万能应力测试机测试其剪切粘结强度,在体式显微镜下评价各组牙齿表面的剩余粘结剂指数,并进行统计学分析。结果:单因素方差分析显示各组间的剪切粘结强度有显著性差异(P<0.05),组2的剪切粘结强度最高,组1和组3间的剪切粘结强度差异无统计学意义。Kruskal-Wallis检验表明各组的剩余粘结剂指数无差别(P>0.05)。结论:3种自酸蚀粘结剂粘结托槽的剪切粘结强度存在一定的差异,但均能满足正畸临床治疗的需求。     

树脂表面机械处理方式对硅橡胶与丙烯酸树脂粘结强度的影响

目的：比较不同树脂表面机械处理方式对硅橡胶与丙烯酸树脂粘结强度的影响。方法：按丙烯酸树脂处理方式不同分为9组,7组为砂纸打磨组,分别采用80目,240目,400目,600目,800目,1000目,1500目砂纸流水下均匀打磨,1组为抛光组,1组为喷砂组。各组处理后涂底涂剂,与硅橡胶粘结,测试其抗剪切强度,观察其破坏方式。测试每组部分试片的粗糙度。结果：抗剪切强度基本上与处理表面的粗糙度呈负相关,喷砂组的抗剪切强度最高,达2．46MPa。结论：树脂表面机械处理方式不同会对硅橡胶与丙烯酸树脂粘结强度产生影响,其中以喷砂方式处理可以获得最高的抗剪切强度。     

自酸蚀粘结剂的预固化及其对复合树脂与牙本质和牙釉质粘结强度的影响

目的：评价并比较在填入复合树脂前对粘结剂进行光固化和粘结剂与复合树脂同步固化两种情况下．3种自酸蚀粘结剂与牙釉质和牙本质的剪切粘结强度。材料和方法：对120颗拔除的牙齿进行湿磨以在牙釉质和牙本质上形成粘结平面。按照厂家操作说明分别将3种粘结剂（Adper Prompt—L-Pop．Clearfil SE Bond和Xenolll）涂于牙釉质或牙本质上。半数样本涂布粘结剂后＆口刻光固化（PRC组）,另一半将复合树脂填入后再行光固化（COC组）。将复合树脂置入特氟龙管内并在其上方进行光固化。样本于室温储于去离子水中24h后．使用拉伸强度试验机进行剪切力加载直到断裂。用2因素方差分析、预固化和材料的单因素分析、以及Tukey显著性检验多重比较程序来分析剪切粘结强度（MPa）。所有检验均在5％显著性水平（n=10）进行。结果：与同步固化方法比较,先光固化粘结剂的方法显示其与牙本质的粘结强度明显增高（P〈0001）：而与牙釉质的粘结强度．PRC组与COC组并无显著差异（P=0．420）。结论：在固化复合树脂之前．对自酸蚀粘结剂预固化可产生更大的牙本质粘结强度：不同的自酸蚀粘结剂固化技术对釉质的粘结强度并无明显影响。     

硅烷偶联剂及自酸蚀粘结剂对VitaMarkⅡ与牙本质粘结强度的影响

目的：比较硅烷偶联剂对VITAMarkⅡ可切削陶瓷的粘结强度的影响。方法：将切割好的72个瓷片经打磨酸蚀后随机分为2组：实验组应用硅烷偶联剂,对照组无处理。每组再分4个亚组,与4种粘结材料（RelyXVeneer、PanaviaF、RelyXUnicem和FL-BOND＋Beautifil Flow）粘结,万能材料试验机测其剪切强度,扫描电镜观察粘结界面。结果：对照组中RelyX Veneer、PanaviaF和RelyX Unieem的剪切强度显著高于FL-BOND＋BeautifilFlow的剪切强度（P〈0．05）。实验组中4种粘结材料间的差异无统计学意义（P〉0．05）。硅烷偶联剂的应用提高了4种粘结材料的剪切强度。结论：硅烷偶联剂可提高MarkⅡ瓷的粘结强度。     

不同方向剪切力作用下两种树脂粘结剂与人牙釉质的剪切粘结强度研究

目的：考察不同施力方向上树脂粘结剂与人牙釉质的剪切粘结强度。方法：使用树脂类粘结剂A（Clearfil SE BOND）和B（Prime＆Bond NT），将各自配套的复合树脂粘结在离体人牙釉质面上，当剪切力沿根尖、骀面、近中和远中方向作用时测量其剪切粘结强度。结果：粘结剂A和B与牙釉质的剪切粘结强度值显示，根尖方向[分别为（44．38±3．68）Pa和（45．50±2．88）Pa]〉近中方向[分别为（37．81±7．56）Pa和（40．15±2．59）Pa]和远中方向[分别为（35．71±3．34）Pa和（35．75±4．15）Pa]〉[牙合]面方向[分别为（29．19±3．75）Pa和（33．44±3．79）Pa]，近中方向和远中方向间差异无统计学意义（P〉0．05），根尖方向与[牙合]面方向间差异有统计学意义（P〈0．05）。结论：树脂粘结剂与人牙釉质剪切粘结强度的大小与剪切力作用的方向相关。     

不同正畸粘接系统在托槽再粘接中的应用评价

目的：检测使用不同正畸粘接系统再粘接托槽对其剪切粘接强度的影响,以探讨提高临床再粘接效率的方法。方法：选择60颗正畸减数的恒双尖牙,依据不同粘接系统随机分为3组：津京釉质粘接剂（A组）、TransbondXT光固化粘接系统（B组）及Transbond自酸蚀粘接系统（C组）。所有样本均先用津京釉质粘接剂粘接托槽,24h后去除托槽重新粘接新托槽,测量3组托槽再粘接的剪切强度及粘接剂残留指数（AdhesiveRemnantIndex,ARI）。结果：3组托槽再粘接剪切强度分别为（8．615±2．460）MPa、（8．807±1．801）MPa及（8．144±3．023）MPa,组间剪切强度差异无显著性;ARI评分表明：C组牙面上残留的粘接剂明显少于其他两组。结论：采用自酸蚀粘接系统再粘接托槽的剪切强度与其它两种粘接系统相当,并且去除托槽后牙面残留粘接剂较少。     

A Study on Effect of Surface Treatments on the Shear Bond Strength between Composite Resin and Acrylic Resin Denture Teeth

Visible light-cured composite resins have become popular in prosthetic dentistry for the replacement of fractured/debonded denture teeth, making composite denture teeth on partial denture metal frameworks, esthetic modification of denture teeth to harmonize with the characteristics of adjacent natural teeth, remodelling of worn occlusal surfaces of posterior denture teeth etc. However, the researches published on the bond strength between VLC composite resins and acrylic resin denture teeth is very limited. The purpose of this study is to investigate the effect of five different methods of surface treatments on acrylic resin teeth on the shear bond strength between light activated composite resin and acrylic resin denture teeth. Ninety cylindrical sticks of acrylic resin with denture teeth mounted atop were prepared. Various treatments were done upon the acrylic resin teeth surfaces. The samples were divided into six groups, containing 15 samples each. Over all the treated and untreated surfaces of all groups, light-cured composite resin was applied. The shear strengths were measured in a Universal Testing Machine using a knife-edge shear test. Data were analyzed using one way analysis of variance (ANOVA) and mean values were compared by the F test. Application of bonding agent with prior treatment of methyl methacrylate on the acrylic resin denture teeth resulted in maximum bond strength with composite resin.     

不同表面处理方式对氧化锆基全瓷崩瓷树脂修补剪切强度的影响

目的：比较不同表面处理方式对氧化锆基底材料与复合树脂粘接剪切强度的影响。方法：将60个钇稳定氧化锆（Y-TZP）试件分为6组,分别接受酸蚀、喷砂、硅烷偶联剂、酸蚀＋硅烷偶联剂、喷砂＋硅烷偶联剂5种表面处理,未处理组作为对照。在处理面粘接复合树脂,经24 h水浴后测试剪切强度。扫描电子显微镜（SEM）观察处理面微观形态。结果：喷砂组（A）（33.45±3.46）MPa、喷砂＋硅烷偶联剂组（AS）（36.95±2.93）MPa两组剪切强度值明显高于其他组（P〈0.01）;未处理组（N）、8%HF酸蚀组（H）、硅烷偶联剂组（S）、8%HF酸蚀＋硅烷偶联剂组（HS）组间剪切强度无统计学差异。相同处理方式下,加入与不加人硅烷偶联剂组间剪切强度无统计学差异。SEM观察酸蚀处理对Y-TZP表面形貌无改变,喷砂处理明显粗化Y-TZP表面。结论：喷砂处理能够有效提高Y-TZP与复合树脂粘接强度;酸蚀及硅烷偶联剂对Y-TZP处理无效。     

固化光源对正畸托槽光敏粘结剂抗剪切强度及粘结剂残留指数影响的研究

目的：研究普通卤素灯（QTH）和发光二级管灯（LED）对正畸托槽复合树脂光敏粘结剂（3M）和树脂加强型玻璃离子光敏粘结剂（GC）抗剪切力的影响,为临床正畸粘结材料和固化光源的选择提供一定依据。方法：选取新鲜拔除的第一双尖牙48颗,随机分为4组,使用不同粘结材料和不同光源配合粘结标准网底方丝弓托槽,采用微机万能材料实验机对托槽的粘结强度进行检测,同时记录粘结剂残留指数（ARI）。结果：3M抗剪切力及ARI值均显著大于GC（P〈0．05）;QTH和LED对3M和GC的抗剪切力及ARI值影响差别无统计学意义。结论：2种正畸光敏粘结剂抗剪切强度均符合临床要求,托槽去除后GC对牙面破坏较小;LED灯照可以节约一半光照时间并能达到普通卤素灯的光照效果,正畸托槽粘结建议使用LED灯作为固化光源。     

Influence of Phosphoric Acid Etching on Bond Strength for Calcium Silicate-Based Sealers

IntroductionThis study evaluated the microtensile bond strength of calcium silicate-based sealers and epoxy resin-based sealer, depending on the use of phosphoric acid (PA) etching before immediate resin restoration.MethodsExposed dentin surfaces of extracted human third molars were randomly assigned to 3 groups depending on sealer type (AH Plus [Dentsply DeTrey], CeraSeal [Meta Biomed Co.], and EndoSeal MTA [Maruchi]). Half of the samples were treated with PA for 30 seconds, and the other half were cleaned with water. Completely untreated specimens were used as controls. Self-etching adhesive (Clearfil SE Bond, Kuraray) was applied and composite resin (Tetric N-Ceram, Ivoclar Vivadent) was used to create build-ups. After 24 hours, the microtensile bond strength was measured (EZ Test, Shimadzu Co.). The failure mode was determined by light microscopy and scanning electron microscopy. One-way analysis of variance with the Bonferroni correction was used to analyze the data (P < .05).ResultsThe bond strength of the water-washed dentin surfaces in the calcium silicate-based sealer groups did not differ significantly from those of the control surfaces but the PA-pretreated surfaces exhibited relatively low-bond strength. The AH Plus-treated group had lower bond strength than the control group when no PA treatment was applied, but PA treatment restored the bond strength. The adhesive failure mode was most frequently found in the AH Plus group without PA etching.ConclusionsWhen a water-soluble calcium silicate-based sealer is used, sufficient bond strength can be obtained by washing with water alone, with no need for PA use.     

加速老化对纤维增强树脂桩剪切强度和微结构的影响

目的：研究加速老化对不同品牌纤维增强树脂桩的剪切强度和微结构的影响。方法：将5种纤维桩（Mac-ro-lockTMPost、Luxa Post、Para Post Taper Lux、Ivoclar Vivadent FRC Postec Plus、Nordin Glassix＋plus）随机分为老化组和无老化组并测量剪切强度、显微结构及红外光谱图。采用双因素方差分析老化前后不同品牌样本剪切强度的差异（α=0.05）。结果：各品牌样本老化前后剪切强度差异有统计学意义（P〈0.05）,老化后纤维丝周围附着的基质大部分分离;老化后酯的红外光谱吸光度增加。结论：老化后基质发生了物理老化和氧化反应,交联密度增加,纤维丝/基质界面粘结力减弱并分离,剪切强度降低。     

极固宁对水门汀与牙本质间剪切强度的影响

目的：评价极固宁脱敏剂对5种水门汀剪切强度的影响。方法：收集双尖牙30颗。包埋牙齿,暴露牙本质面,用水砂纸打磨牙本质面。所有牙齿被分为实验组和对照组。实验组的牙本质面首先用极固宁脱敏处理,然后分别用5种水门汀将树脂小柱粘在牙本质表面。对照组的牙本质不涂脱敏剂,使用前述提到的水门汀粘固树脂小柱。所有试样放在37℃水浴中浸泡24h后测量剪切强度。结果：极固宁脱敏剂没有显著降低聚羧酸锌水门汀和玻璃离子水门汀的剪切强度,但却会使磷酸锌水门汀的剪切强度大幅下降。极固宁也使树脂加强玻璃离子水门汀和树脂水门汀的粘接强度下降。结论：极固宁对磷酸锌水门汀、树脂加强玻璃离子水门汀、树脂水门汀与牙本质间粘接强度有不利影响,对聚羧酸锌水门汀和玻璃离子水门汀与牙本质间粘接强度无不利影响。     

封闭牙釉质表面的抗剪粘接强度研究

目的：研究Single bond与牙釉质表面的抗剪粘接强度。方法：30颗离体前磨牙随机均分为3组，牙釉质上分别粘接不同的测试材料，检测各组材料的抗剪粘接强度，并观察断裂发生的部位。结果：断裂均发生在粘接材料与牙釉质之间，Single bond的抗剪粘接强度达13Mpa。与牙釉质粘接前，牙面预涂京津釉质粘接剂涂剂，Single bond的抗剪强度没有出现显著性变化。这两组分分别与京津釉质粘接剂组比较，抗剪强度均有显著性差异。结论：Single bond与牙釉质的抗剪粘接强度满足正畸临床要求，京津釉质粘接剂涂剂不影响Single bond的临床应用。     

Shear Bond Strength of Four Resin Cements Used to Lute Ceramic Core Material to Human Dentin

Purpose: This study evaluated the effect of four resin cements on the shear bond strength of a ceramic core material to dentin. Materials and Methods: One hundred twenty molar teeth were embedded in a self‐curing acrylic resin. The occlusal third of the crowns were sectioned under water cooling. All specimens were randomly divided into four groups of 30 teeth each according to the resin cement used. One hundred twenty cylindrical‐shaped, 2.7‐mm wide, 3‐mm high ceramic core materials were heat‐pressed. The core cylinders were then luted with one of the four resin systems to dentin (Super‐Bond C&B, Chemiace II, Variolink II, and Panavia F). Half of the specimens (n = 15) were tested after 24 hours; the other half (n = 15) were stored in distilled water at 37°C for 1 day and then thermocycled 1000 times between 5°C and 55°C prior to testing. Shear bond strength of each specimen was measured using a universal testing machine at a crosshead speed of 1 mm/min. The bond strength values were calculated in MPa, and the results were statistically analyzed using a two‐way analysis of variance (ANOVA) and Tukey HSD tests. Results: The shear bond strength varied significantly depending on the resin cement used (p < 0.05). The differences in the bond strengths after thermocycling were not remarkable as compared with the corresponding prethermal cycling groups (p > 0.05). Significant interactions were present between resin cement and thermocycling (p < 0.05). After 24 hours, the specimens luted with Variolink II (5.3 ± 2.2 MPa) showed the highest shear bond strength, whereas the specimens luted with Chemiace II (1.6 ± 0.4 MPa) showed the lowest. After thermocycling, the bond strength values of specimens luted with Chemiace II (1.1 ± 0.1 MPa) and Super‐Bond C&B (1.7 ± 0.4 MPa) decreased; however, this was not statistically significant (p > 0.05). The increase in the shear bond strength values in the Panavia F (4.5 ± 0.7 MPa) and Variolink II (5.5 ± 2.1 MPa) groups after thermocycling was also not statistically significant (p > 0.05). Conclusion: Variolink II and Panavia F systems showed higher shear bond strength values than Chemiace II and Super‐Bond C&B. They can be recommended for luting ceramic cores to dentin surfaces.     

光固化与化学固化复合树脂黏接正畸托槽的对比研究

目的对比光固化、化学固化复合树脂黏接正畸托槽的抗剪强度和牙釉质脱矿程度。方法20颗离体前磨牙随机分为光固化复合树脂组(1)和化学固化复合树脂组(2),检测抗剪黏接强度;将116例正畸患者左右侧上前牙随机分为2组,试验组用光固化复合树脂黏接托槽,对照组用化学固化复合树脂黏接托槽,对比正畸治疗结束后两组牙釉质脱矿的差异。结果2组黏接抗剪强度为:(1)组(17.45±7.06)MPa,(2)组(13.02±5.38)MPa,两组间有差异(P<0.05)。试验组与对照组正畸治疗结束后牙釉质脱矿程度有显著差异(P<0.01)。结论光固化型复合树脂的抗剪强度优于化学固化型。光固化复合树脂黏接正畸托槽能减少正畸治疗中牙釉质脱矿。