EDTA预处理牙本质对自酸蚀粘接效果影响研究进展

自酸蚀粘接因操作时间短、操作步骤少而广泛应用于临床.目前,粘接系统已不需要特定的洞型,即可有足够的粘接强度,但粘接的长期稳定性不佳.玷污层的处理和牙本质表面羟基磷灰石的保存是提高自酸蚀粘接强度和稳定性的关键.乙二胺四乙酸(EDTA)温和的脱矿模式使其作为自酸蚀粘接的牙本质预处理剂成为可能.但EDTA预处理牙本质表面是否...     

两种止血剂对乳牙牙本质全酸蚀及自酸蚀粘接效果的影响

目的 探讨两种止血剂对不同粘接系统下乳牙牙本质粘接效果的影响.方法 选取72颗滞留乳磨牙,其中48颗用于构建微渗漏模型,另外24颗沿近远中切开后得48个样本,构建剪切粘接强度实验模型.两实验模型均分为A、B 2组,A组即全酸蚀组:A1组(ViscoStat止血剂+NT全酸蚀粘接剂)、A2组(ViscoStat Clea...     

丁香油酚对全酸蚀/自酸蚀牙本质粘接系统微拉伸强度的影响

目的:评价含丁香油酚的暂封剂氧化锌丁香油糊剂(zincoxide- eugenol ,ZOE)对全酸蚀/自酸蚀牙本质粘接系统微拉伸强度的影响。方法:选择因正畸拔除的完整、无龋前磨牙;两种全酸蚀牙本质粘接系统:AllBond 2和SingleBond ,两种自酸蚀牙本质粘接系统:ClearfilSEBond和iBond。实验组使用氧化锌丁香油糊剂;对照组牙本质表面不做任何处理;分别存储于3 7℃的蒸馏水中,一周后两组分别使用4种牙本质粘接系统,用微拉伸法测试粘接强度。在体视显微镜下观察断裂界面。结果:双因素方差分析使用ZOE对粘接强度有显著影响(P <0 .0 5 ) ,粘接剂的类型对粘接强度无显著性影响(P >0 .0 5 ) ,交互作用有统计学意义(P <0 .0 5 )。多重比较提示,AllBond 2和SingleBond的实验组和对照组无显著性差异,而ClearfilSEBond和iBond实验组的微拉伸强度明显低于对照组,有显著性差异。体视显微镜下观察断裂多发生在粘接剂内。结论:含丁香油酚的暂封剂氧化锌丁香油糊剂对全酸蚀系统的AllBond 2和SingleBond的粘接强度无影响,对自酸蚀系统的ClearfilSEBond和iBond有显著不利影响。     

自酸蚀粘接系统研究进展

自酸蚀粘接系统对牙本质和釉质的粘接都适用,具有操作简单、修复体边缘封闭性良好、术后过敏低等优越性,因而受到临床医生的欢迎,具有很好的发展前景.本文就自酸蚀粘接系统的性能优点、粘接强度及临床应用方面作一综述.     

微酸性次氯酸水对牙本质自酸蚀粘接的影响

目的 探究口腔诊疗用水中微酸性次氯酸水（SAHW）对牙本质自酸蚀粘接强度的影响。方法 54颗人离体第三磨牙制备成牙本质平面标准试件。试件随机分为6组,分别用蒸馏水、有效氯浓度（FAC）为10 mg/L、40 mg/L的SAHW浸泡处理牙本质30 min及1 h,分为2个对照组和4个实验组。试件用自酸蚀粘接剂SE Bond制备牙本质-树脂粘接微拉伸试件进行微拉伸强度测试(μTBS),并在电镜下观察测试后试件断裂模式。结果 微拉伸强度测试显示蒸馏水组：30 min,(20.37±6.51)MPa,1 h,(20.17±5.72) MPa;10 mg/L SAHW组：30 min(20.61±7.12) MPa,1 h (20.65±6.44)MPa;40 mg/L SAHW组：30 min (21.27±5.92)MPa,1 h(21.46±7.14)MPa。各组微拉伸粘接强度无统计学意义（P>0.05）。各组断裂模式均以混合断裂为主,断裂类型无统计学意义（P>0.05）。结论 SAHW的应用对牙本质自酸蚀粘接无明显不利影响。     

龋影响牙本质粘接强度的研究进展

对于大多数粘接剂而言,龋影响牙本质的粘接强度均低于正常牙本质的粘接强度。本文回顾近几年有关龋影响牙本质粘接强度的文献,着重介绍不同去龋方法、表面处理和粘接剂对龋影响牙本质粘接强度的影响。     

自酸蚀粘接剂对陶瓷托槽粘接强度影响的研究

1998年Bishara[1]首次将酸性偶联剂应用于托槽粘接,引入了自酸蚀粘接(Self-Etching Adhesive)技术的概念。该技术最突出的优点是一次完成对牙面的酸蚀和封闭,简化了临床操作,提高了治疗效率。本研究旨在通过体外抗剪切强度实验来评估应用自酸蚀粘接系统粘接陶瓷托槽的粘接强度,     

不同性质的牙本质对牙本质粘接强度的影响

牙本质由于其复杂的组织结构和组成成分使得它比釉质粘接更复杂,本文主要针对不同性质的牙本质这一因素对牙本质粘接强度的影响作一综述。     

不同酸蚀方法与根面牙本质粘接强度的比较

本文采用常用的全酸蚀和自酸蚀技术,对根面牙本质进行处理,了解不同酸蚀方法对根面牙本质粘接强度的影响. 1 材料与方法 挑选12颗因正畸或牙周病拔除的完整无龋的单根管的前磨牙;在水雾冷却下Isomet慢速锯于牙釉质牙骨质界处截除牙冠和距根尖4 mm的牙根部分,再从颊舌向沿着牙体长轴将剩余牙体从中间劈开,牙根截面用320目、600目和1000目碳化硅水砂纸依次湿性打磨,形成玷污层,超声清洗.     

改良自酸蚀粘接剂对龋影响牙本质粘接性能的影响

目的探讨表没食子儿茶素没食子酸酯(EGCG)改良后自酸蚀粘接剂可乐丽Clearfil SE Bond对龋影响牙本质即刻粘接性能影响。 方法选取中龋离体牙20颗,在龋指示剂下去除龋感染牙本质,保留龋影响牙本质。将EGCG配制成100、200、300 μg/ml Clearfil SE Bond粘接剂溶液及水溶液,以不添加EGCG粘接剂及水溶液作为对照组。微拉伸试件分组按照Clearfil SE Bond说明书指导进行粘接,上方堆塑5~6 mm Z350树脂。使用慢速线性切割机沿牙齿长轴进行切割,形成约1 mm × 1 mm试件,进行微拉伸实验。显微硬度试件分组浸泡于EGCG水溶液中24 h后测试显微硬度。使用SPSS 22.0统计学软件,在One-Way ANOVA模式下进行统计学分析。 结果EGCG处理后龋影响牙本质的粘接强度及显微硬度均明显提高,差异有统计学意义(F_粘接强度=24.554,P_粘接强度 < 0.05;F_显微硬度=20.418,P_显微硬度 < 0.05)。 结论EGCG可增强龋影响牙本质的即刻粘接强度及显微硬度。     

Micro-tensile bond strength of self-etching primer adhesive systems to human coronal carious dentin

The aim of this study was to evaluate the micro-tensile bond strengths of three self-etching primer adhesive systems to normal dentin (ND), caries-affected dentin (CAD) and caries-infected dentin (CID). Human extracted molars with caries were used, and flat dentin surfaces ground by 600-grit SiC paper were prepared. The surfaces were dyed using Caries-Detector solution, treated with Clearfil SE Bond, Mac-Bond II and UniFil Bond, and then covered with resin composites according to manufacturer's instructions. After immersion in 37 degrees C water for 24 h, the teeth were serially sectioned into multiple slices. Each slice was distinguished into ND, CAD and CID groups by the degree of staining, and the bond strength was measured in a universal testing machine. Scanning electron microscopic (SEM) observation was also performed. For statistical analysis, anova and Scheffe's test were used (P < 0.05). The bond strengths of the three adhesive systems to CAD and CID were significantly lower than those to ND. There was significant difference in the bond strength to ND between Clearfil SE Bond and UniFil Bond, but no significant differences to CAD and CID among the three adhesive systems. On SEM, the hybrid layers in CAD and CID showed more porous structures compared with ND. The results indicated that the bond strengths to CAD and CID were not affected by a variety of self-etching primer adhesive systems because of the porous hybrid layer formation in carious dentin.     

Bond strength of five current adhesives to caries-affected dentin

Five current dentin adhesives were evaluated for their ability to bond to caries-affected dentin. The materials were: total etch [Solid Bond (SB)], two self-etch [Clearfil SE Bond (CSE), Etch and Prime (EP)], two one bottle [Prime and Bond 2.1 (PB), One Coat Bond (OCB)]. Sixty extracted molar teeth with proximal caries (mesial or distal) extending into mid-dentin were used. By grinding normal and caries-affected proximal surfaces, flat dentin surfaces were obtained. The surfaces were then bonded with each adhesive system and composite resins were added to the surfaces by packing the material into a cylindrical-shaped plastic matrix with an internal diameter of 2.5 mm and height of 3 mm. Shear bond testing was performed following 10 days incubation of specimens in distilled water at 37 degrees C. Results were analysed by Kruskal-Wallis ANOVA, and Mann-Whitney U multiple comparison test and Wilcoxon rank tests. The results obtained with CSE, SB, and EP were similar in caries affected and normal dentin (P > 0.05). But bonds made to normal dentin with OCB and PB were lower (P < 0.05) than bonds to caries-affected dentin. Bonding to caries-affected dentin with CSE (24.49 +/- 5.38), SB (21.49 +/- 9.15), and EP (21.19 +/- 9.17) showed shear bond strengths higher than OCB (17.43 +/- 9.78) and PB (14.10 +/- 7.94) (P < 0.05). Bonding to normal dentin with CSE (29.91 +/- 8.95) was the highest (P < 0.05). SB (21.17 +/- 5.41) and EP (17.45 +/- 6.21) showed shear bond strengths higher than OCB (11.99 +/- 10.15) and PB (10.57 +/- 4.56) (P < 0.05).     

Effect of waiting interval on chemical activation mode of dual-cure one-step self-etching adhesives on bonding to root canal dentin

Objectives

The purpose of this study was to evaluate the effect of waiting interval on the chemical activation of dual-cure one-step self-etching adhesives before placing resin core materials on the regional bond strength to root canal dentin.

Materials and methods

Forty-eight post spaces prepared in human lower premolars were applied with four dual-cure one-step self-etching adhesives Estelite Core Quick: ECB/ECQ, Clearfil DC Core Automix: CDB/CDC, Unifil Core EM: UNB/UNC, BeautiCore: BTB/BTC as the manufacturers’ instructions. These adhesives were cured with light activation for 10 s, or chemical activation with 0, 10, and 30 s waiting intervals prior to placing resin core material. Resin core materials were then placed into the post space and light-cured for 60 s. After 24 h water storage, each specimen was serially sliced into 8, 0.6 mm × 0.6 mm thick beams for the μTBS test. The regional μTBS data were analyzed using three-way ANOVA and Dunnett's T3 test (p < 0.05).

Results

For the chemical activation with 10 and 30 s waiting intervals, ECB and CDB exhibited significantly improved μTBS, whereas for UNB and BTB, the μTBS were not significantly different but increased with waiting interval. On the other hand, light-activation of all the adhesives produced significantly higher μTBS to root canal dentin than chemical activation (p < 0.05), except for the UNB group.

Conclusions

For the chemical activation of dual-cure one-step self-etching adhesives, a waiting interval prior to placing resin core material improved μTBS to root canal dentin. Polymerising the adhesives before polymerisation reaction of resin core material would be effective for bonding to root canal dentin.

Clinical relevance

For chemical activation mode as well as light activation mode, pre-curing of adhesive layer before proceeding polymerisation of resin filling material would produce higher bonding performance to dentin in the cavity.     

复合树脂联合两种酸蚀粘结剂与乳牙釉质及牙本质的剪切粘结强度比较

目的:比较复合树脂联合全酸蚀和自酸蚀粘结剂与乳牙釉质及牙本质的剪切粘结强度。方法:收集新鲜拔除的滞留乳磨牙48个,随机分为4组,分别制备全酸蚀和自酸蚀粘结剂的釉质和牙本质试件,电子万能试验机测定各组剪切强度;体视显微镜下观察试件断面的破坏模式;扫描电镜观察粘结界面情况。结果:全酸蚀粘结剂组的釉质剪切强度明显高于牙本质剪切强度(P<0.05);自酸蚀粘结剂组釉质与牙本质剪切粘结强度无统计学差异(P>0.05);全酸蚀粘结剂组的釉质、牙本质剪切粘结强度均明显高于自酸蚀粘结剂组(P<0.05);体视显微镜及扫描电镜观察均显示,全酸蚀粘结剂与釉质和牙本质的粘结界面结合程度好于自酸蚀粘结剂。结论:全酸蚀粘结剂处理对乳牙釉质及牙本质的剪切粘结强度高于自酸蚀粘结剂。     

自酸蚀树脂水门汀ResiCem牙本质粘结强度的评价

目的 评价自酸蚀树脂水门汀ResiCem的牙本质粘结强度并探讨酸蚀对其粘结强度的影响。方法 选择离体无龋第三恒磨牙15颗。沿垂直于牙体长轴方向将磨牙冠中1/3处切开,将牙本质面分别用自酸蚀树脂水门汀Panavia F和Resi-Cem原位对位粘结。其中ResiCem组牙本质面分别用磷酸酸蚀0、5、10、15 s。用低速切片机把样本切割成约1 mm×1 mm×8mm条块后进行微拉伸测试,并通过扫描电镜观察粘结界面。结果 ResiCem的牙本质微拉伸粘结强度[(16.9±5.3)MPa]与Panavia F[(17.0±5.2)MPa]间差异无统计学意义(P>0.05)。磷酸酸蚀显著地降低ResiCem与牙本质间的粘结强度(P<0.05),并随着酸蚀时间的延长而降低。结论 ResiCem的牙本质微拉伸粘结强度与Panavia F相当,但酸蚀会降低ResiCem的牙本质粘结强度。     

Comparison of bonding efficacy of an all-in-one adhesive with a self-etching primer system

The aim of this study was to compare the bonding efficacy of an all-in-one adhesive with that of a self-etching primer system by measuring microleakage after thermocycling and the microtensile bond strength (microTBS) to enamel and dentin. Circular class V cavities along cement-enamel junctions were prepared in 20 extracted human premolars. Each 10 teeth were bonded with either AD Bond (AD) or Clearfil SE Bond (SE), and filled with a resin composite (Charisma). After thermocycling and staining with 0.5% basic fuchsin, the microleakage at the coronal and apical walls was evaluated using longitudinal sections. In addition 20 premolars were used to measure microTBS at 24 h after bonding for these adhesives to enamel and dentin that corresponded to the coronal and apical walls of the class V cavities. AD showed more microleakage than SE in the coronal walls, but there was less microleakage in the apical walls and no difference in apical leakage between the two adhesives. microTBS (SD) in MPa to enamel and dentin were 25.2 (7.3) and 68.3 (9.4) for AD, and 35.8 (7.4) and 76.4 (7.8) for SE, respectively. AD gave a lower microTBS to enamel than did SE. The results suggested that the poor adaptation at the coronal wall in AD might be caused by the lower bond strength to enamel.     

3M����ʴ�����GC��̻�����������������ܱȽ��о�

目的    比较3M自酸蚀封闭剂+3M光固化黏结剂与GC光固化正畸黏结剂在唾液污染条件下黏结颊面管的性能。方法    收集2009年7—9月在大庆油田总医院口腔外科因牙周病拔除的新鲜下颌第一恒磨牙40颗,随机分为3M组和GC组,每组20颗。分别用3M自酸蚀封闭剂+3M光固化黏结剂和GC光固化正畸黏结剂黏结颊面管,测试其抗剪切强度、抗拉伸强度及黏结剂残留指数。结果    两种黏结剂的抗剪切强度及抗拉伸强度差异均有统计学意义（P < 0.05）,GC光固化正畸黏结剂黏结强度大于3M自酸蚀黏结剂;在剪切力和拉伸力作用下,GC光固化正畸黏结剂的黏结剂残留指数（ARI）小于3M自酸蚀黏结剂,二者差异有统计学意义（P < 0.05）。结论           GC光固化正畸黏结剂性能较佳,对釉质损伤小,适合用于隔湿效果差的磨牙黏结颊面管。     

修复方式及粘接剂类型对牙本质粘接微拉伸强度的影响

目的 :研究不同修复方式及粘接剂类型对牙本质粘接微拉伸强度的影响。方法 :18个离体牙按牙体预备方法分为窝沟预备及冠部平切两组 ,每组分别使用One StepPlus、Primer&BondNT和SingleBond三种粘接剂进行牙本质粘接 ,最后均用AELITETMLS复合树脂修复牙体外形。样本包埋切割成块后 ,测试牙本质微拉伸强度。结果 :使用One StepPlus和SingleBond粘接剂时 ,冠部平切组微拉伸强度高于窝洞预备组 ,差异具有统计学意义 ;无论何种修复方式 ,One StepPlus和SingleBond的微拉伸强度均高于Primer&BondNT。 结论 :不同修复方式和粘接剂类型对牙本质粘接微拉伸强度存在影响