底涂剂对硅橡胶与丙烯酸树脂材料黏结强度的影响

目的:比较不同底涂剂对硅橡胶和丙烯酸树脂黏结强度的影响。方法:取丙烯酸树脂试件8组,其中6组涂不同配方的自制底涂剂,1组涂Cosmesil G611底涂剂,对照组不涂底涂剂,晾干后,与硅橡胶黏结,测试其抗剪强度。应用傅立叶变换红外光谱法对D配方底涂剂的特征吸收谱带进行分析。结果:D配方底涂剂可产生2.20MPa的抗剪强度,Cosmesil G611底涂剂组的抗剪强度为1.44MPa,不涂底涂剂组没有任何黏结力。结论:γ-MPS的浓度与二者的黏结强度密切相关,D配方底涂剂组硅橡胶和丙烯酸树脂间的黏结强度最高。     

树脂表面粗糙度对丙烯酸树脂与硅橡胶粘接强度的影响

高并不利于提高丙烯酸树脂与硅橡胶间的粘接力,用较小粗糙度的600目砂纸打磨丙烯酸树脂表面可提高丙烯酸树脂与硅橡胶间的粘接强度.     

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     

软衬及赝复硅橡胶与基托树脂的粘结及影响因素

口腔软衬及赝复硅橡胶材料与基托树脂材料间的粘结是通过粘结性偶联剂来实现的,二者的粘结受多种因素影响。该文对软衬硅橡胶材料和赝复硅橡胶材料进行概述,同时对硅橡胶与基托树脂材料粘结强度的影响因素作简要综述。     

不同固化方式对ZY一1硅橡胶与丙烯酸树脂粘结强度的影响

目的：探讨赝复硅橡胶固化方式的不同对丙烯酸树脂与硅橡胶粘接强度的影响。方法：将硅橡胶与已预1处理丙烯酸树脂材料分别在室温,升温,及微波3种不同情况下制成硅橡胶一偶联剂一丙烯酸树脂粘接试件,测试试件粘接强度。结果：3种固化方式下各组间硅橡胶与丙烯酸树脂的粘结强度没有统计学差异。不同功率微波对硅橡胶固化后与丙烯酸树脂粘结强度的影响也没有统计学差异。结论：临床制作需要丙烯酸树脂固定的硅橡胶赝复体时,可以通过不同的固化方式制作。微波固化可以作为一种新的方式应用于赝复体的制作。     

不同表面处理方式对丙烯酸树脂表面性状和粘接强度的影响

目的探讨不同表面处理方式对丙烯酸树脂表面性状和粘接强度的影响。方法制备硅橡胶与丙烯酸树脂构成的重叠联合模型。根据树脂条的不同表面处理方式,将模型随机分为4组:对照组、MMA浸润组、喷砂组、MMA浸润+喷砂组。用扫描电镜观察各组树脂处理后的表面形态变化,用粗糙度仪检测其粗糙度,万能材料试验机测定树脂条和硅橡胶之间的粘接强度。结果 1.电镜观察显示,未经处理的树脂条表面打磨痕迹明显,经过MMA浸润后,表面出现溶解的痕迹,经过喷砂后,表面粗糙凸凹不平;2.粗糙度:喷砂组(3.12±0.02)μm和MMA浸润+喷砂组(3.11±0.01)μm>对照组(0.73±0.01)μm和MMA浸润组(0.71±0.01)μm,且差异有统计学意义(P<0.05);3.粘接强度:MMA浸润+喷砂组(2.34±0.03)MPa>喷砂组(2.02±0.01)MPa>MMA浸润组(1.81±0.02)MPa>对照组(1.50±0.01)MPa,且差异有统计学意义(P<0.05)。结论 MMA单体浸润与喷砂的处理方式可以使丙烯酸树脂表面的形貌发生变化,更有利于硅橡胶与丙烯酸树脂的结合,获到良好的粘接效果,可在临床推广使用。     

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。     

根管牙本质表面处理对树脂水门汀粘结强度影响的研究现状

纤维桩由于具有良好的物理化学及美学性能,在临床上的应用日益增加。大量研究表明,纤维桩修复失败的主要原因为粘接失败,即树脂粘结剂与牙本质,树脂粘结剂与纤维桩界面之间的脱粘结。粘结前对纤维桩表面和/或根管牙本质表面进行处理可以提高纤维桩粘结的成功机率。本文就根管牙本质表面处理对树脂水门汀粘结强度的影响进行综述。     

酸蚀及粘结剂对聚醚醚酮粘结强度的影响

目的:研究经过不同表面处理后的聚醚醚酮与饰面树脂间粘结强度的变化。实验方法:将聚醚醚酮样品随机分为4组进行表面处理:98%浓硫酸酸蚀组,粘结剂处理组,98%浓硫酸酸蚀+粘结剂处理组和未处理对照组。各处理组再随机分为2个亚组粘结饰面树脂:GC Gradia组,Ceramage组。每个亚组随机选出一半样品用37 ℃蒸馏水浸泡24 h,其余样品冷热循环10000次后,测量样品的剪切粘结强度,SPSS软件统计分析数据;体视显微镜检查样品断裂界面,统计粘结失败类型。结果:各表面处理实验组与空白对照组之间均存在统计学差异,经硫酸酸蚀处理的聚醚醚酮与Ceramage硬质树脂的粘结强度最高(19.38±5.34) MPa,且与其他实验组有统计学差异(P＜0.05)。在冷热循环后,除粘结Gradia Direct树脂的浓硫酸+粘结剂处理组外,其余实验组的粘结强度明显降低(P＜0.05)。结论:浓硫酸酸蚀与自酸蚀粘结剂均能提高聚醚醚酮与饰面树脂的粘结强度,Gradia Direct饰面树脂与经浓硫酸+粘结剂处理的聚醚醚酮表面可形成稳定的粘结作用。     

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...     

ZA-1偶联剂对赝复硅橡胶与丙烯酸树脂材料粘接强度的影响

目的：研究ZA-1偶联剂在两种加成型硅橡胶及两种丙烯酸树脂之间交叉使用时粘接强度的影响。方法：选择ZY—1硅橡胶与A-2186硅橡胶分别与临床中常用的热凝丙烯酸树脂和自凝型树脂制成硅橡胶一偶联剂一丙烯酸树脂粘接试件,分别测试试件粘接强度。选择ZY-1组进行热氧老化试验。结果：四组硅橡胶偶联剂粘接系统中,ZY-1硅橡胶与丙烯酸树脂的粘接强度显著高于A-2186组（P〈0．05）。热凝和自凝丙烯酸树脂对粘接系统的粘接强度无显著影响。所有实验组的破坏方式均为内聚破坏。热氧老化处理后ZY-1丙烯酸树脂粘接试件的粘接强度与未老化组相比有显著性提高。结论：丙烯酸树脂材料的种类对粘接强度的影响不大。两种不同的加成型硅橡胶与ZA-1偶联剂交叉使用时粘接强度略有下降,但粘接效果不影响临床使用。热氧加速老化实验使ZY-1加成型硅橡胶与丙烯酸树脂的粘接强度有所提高。     

铸钛的不同表面处理对钛-聚合瓷结合强度影响的实验研究

目的 研究铸钛的不同表面处理方法对钛-聚合瓷结合强度的影响。方法 将24个铸钛试件随机分为光 滑组、粗糙组、酸蚀光滑组和酸蚀粗糙组,每组6个。根据分组不同分别采用不同的表面处理方式,粗糙组进行喷 砂处理,酸蚀光滑组进行酸蚀处理,酸蚀粗糙组喷砂后进行酸蚀,光滑组表面不做处理。表面处理后的钛试件与 聚合瓷制备成钛-聚合瓷试件,测试其剪切结合强度,并在扫描电镜下观察钛表面形貌和剪切试验后钛与聚合瓷断 裂面的形貌。结果 光滑组、粗糙组、酸蚀光滑组和酸蚀粗糙组的剪切结合强度分别为（3.08±0.45）、（6.05±0.74）、（6.27±0.80）、（10.16±0.82）MPa。粗糙组、酸蚀光滑组和酸蚀粗糙组的剪切结合强度高于光滑组（P<0.01）,其中酸 蚀粗糙组的剪切结合强度最高,粗糙组和酸蚀光滑组间的剪切结合强度无统计学差异（P>0.05）。各组的钛表面形
貌和剪切试验后钛与聚合瓷断裂面的形貌均有一定的差异。结论 钛表面酸蚀处理和喷砂处理可提高钛-聚合瓷的剪切结合强度,喷砂后酸蚀处理是一种有效地提高钛-聚合瓷剪切结合强度的表面处理方法。     

Effect of pre-processing surface treatments of acrylic teeth on bonding to the denture base

Summary  The aim of this study was to examine the bond strength between acrylic teeth after various surface treatments and processing with either a heat- or microwave-polymerized denture base material. Specimens were prepared and tested according to the methods described in American National Standard/American Dental Association Specification No.15 (Synthetic Polymer Teeth) using a special assembly. Three brands of acrylic teeth were used with the following treatments: control (no treatment), grinding and grinding plus sandblasting. Treatment groups were further divided into two denture base processing subgroups: heat-polymerized and microwave-polymerized methods. Denture base processing to the acrylic teeth was performed according to the manufacturer's recommendations. Bond strength test was performed using a universal testing machine with five specimens and each specimen is composed of six anterior teeth per experimental group. Data were analysed using a three-way anova and the Scheffe' F -test post hoc pair wise comparison at the 95% significance level. The mean bond strength values ranged from 33.1 ± 4.1 to 51.6 ± 2.5 MPa. The bond strength values of sandblasted surfaces were significantly higher than those of the ground surface and the control ( P  < 0.05). Combined (acrylic tooth and denture base resin) cohesive failures were disclosed in all tested samples. Acrylic tooth surface pre-processed surface treatment with grinding plus sandblasting and processed with a heat-polymerized denture base provided the greatest bond strength between acrylic tooth and denture base.     

Evaluation of bonding efficiency between facial silicone and acrylic resin using different bonding agents and surface alterations

PURPOSE

The aim of the study was to evaluate the effect of 3 silicone primers and 3 surface characterization of acrylic resin surface on bond strength between silicone elastomer and acrylic resin.

MATERIALS AND METHODS

96 Cosmesil silicones bonded to heat-curing acrylic resin were fabricated with the dimension of 75 × 10 × 3 mm. The 3 primers used in this study were G611 platinum primer, A-330 Gold platinum primer, and cyanoacrylates resin. Specimens without primer were used as control. The 3 types of surface characterization done were retentive holes with 1.5 mm in diameter and 0.5 mm deep, retentive beads of 0.6 mm diameter and the third type which was plain without any characterization. The specimens were then checked for bond strength by subjecting them to 180° peel test on a universal testing machine. The obtained results were then subjected to statistical analysis using 2-way ANOVA and Scheffé multiple post hoc procedures. The statistical significance was set at 5% level of significance.

RESULTS

The maximum bond strength was seen for samples in which A-330G primer was used followed by G611 primer. The control group showed the minimum bond strength. Surface characterization of retentive holes increased the bond strength considerably as compared to retentive beads and samples without any surface characterization.

CONCLUSION

Within the limitations of the study, A-330G primer was more compatible with Cosmesil M511 silicone and has better bonding of Cosmesil to acrylic resin. Retentive holes made on acrylic surface increased the bond strength considerably than those without any surface characterization.     

表面硅涂层改性对氧化锆陶瓷与树脂水门汀粘结强度的影响

目的 研究不同浓度和不同厚度硅涂层对Lava氧化锆陶瓷与树脂水门汀粘结强度的影响。方法 制作Lava氧化锆长方体状陶瓷试样共81件(10 mm×10 mm×3 mm),按20%、30%、40% 3种硅涂层浓度及100、200、300 nm 3种硅涂层厚度分为9组(A~I,n=9)对氧化锆陶瓷粘结面进行处理,然后将每组试样与Panavia F树脂水门汀粘结,万能材料实验机测试剪切粘结强度,对结果进行统计分析。结果 A组到I组各组剪切粘结强度值分别为3.09±0.20、3.27±0.22、3.30±0.38、3.17±0.25、5.35±0.39、4.09±0.29、3.16±0.29、3.24±0.23和（4.01±0.28） MPa。不同厚度的硅涂层各组间粘结剪切强度差异具有统计学意义(P<0.05),不同浓度硅涂层间也具有统计学意义(P<0.05),浓度和厚度之间存在交互效应(P<0.05),30%浓度200 nm厚度硅涂层获得的剪切粘结强度值最大。结论 30%浓度涂抹200 nm厚度的硅涂层为较适宜的浓度和厚度,可明显提高氧化锆陶瓷与树脂水门汀剪切粘结强度。     

Effect of ceramic surface treatment on the shear bond strengths of two resin luting agents to all-ceramic materials

The purpose of this study was to evaluate the bond strengths of some resin luting cements of two different all ceramic materials (In-Ceram, IPS-Empress). Composite cylinders 3.2 x 2 mm were prepared on the ceramic surfaces for a shear test. Four ceramic surface treatments were performed. (i). As received, (ii). grinding with diamond bur, (iii). sandblasting with 50 microm alumina grit and (iv). HF acid treatment and sandblasting with 50 microm alumina grit. Ceramic specimens were treated with one of the four methods and then cemented together with each of the two luting agents. The tested luting cements were Panavia F and Clearfil Se Bond (CSeB). The CSeB demonstrated the highest bond strength (59.95 MPa) regardless of the ceramic blocks. The average of load to fracture the In-Ceram blocks luted with Panavia F cement was 25.89 MPa. The mean shear bond strength of IPS Empress blocks luted with Panavia F cement was 10.31 MPa. Grinding the surface with a diamond bur for In-Ceram blocks luted with Panavia-F was 30.93 MPa and with CSeB was 77.04 MPa. For IPS-Empress blocks these values decreased to 12.39 MPa for Panavia-F and 30.84 MPa for CSeB. Acid etching of the surfaces with HF acid demonstrated a weak tendency to improve bond strength (In-Ceram-->Panavia-F= 14.59 MPa and CSeB=59.32 Mpa; IPS-Empress--> Panavia-F=5.85 MPa and CSeB= 23.33 MPa).     

Shear bond strength of microwaveable acrylic resin for denture repair

Microwaveable acrylic denture resins are believed to provide an effective means of repairing fractured dentures. This in vitro investigation compared the bond strength of a microwaveable acrylic resin as a denture repair material to two established auto-polymerized resins. Fifty-one specimens were made using Lucitone 199 as a simulated denture base, and were then divided into three groups of 17 samples each. Each test group was bonded with the following acrylic resins: Acron Mc, Rapid Repair and Palapress. A shear bond strength test was carried out 24 h after the samples were bonded. Fracture analysis showed that bond failure was adhesive for all groups. Shear bond values showed a statistically significant difference at P < 0.05 level between Acron Mc and Rapid Repair; Palapress and Rapid Repair, and indicated that Acron Mc and Palapress were superior to Rapid Repair as a repair material. However, there was no statistical difference found between Acron Mc and Palapress. Microwaveable acrylic resins produce repaired junctions of adequate strength.