Can a New HEMA-free Two-step Self-etch Adhesive Improve Dentin Bonding Durability and Marginal Adaptation?

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2021-12-03 DOI:10.3290/j.jad.b2288233

Antonin Tichy, Keiichi Hosaka, Yi Yang, Yutaro Motoyama, Yasunori Sumi, Masatoshi Nakajima, Junji Tagami

{"title":"Can a New HEMA-free Two-step Self-etch Adhesive Improve Dentin Bonding Durability and Marginal Adaptation?","authors":"Antonin Tichy, Keiichi Hosaka, Yi Yang, Yutaro Motoyama, Yasunori Sumi, Masatoshi Nakajima, Junji Tagami","doi":"10.3290/j.jad.b2288233","DOIUrl":null,"url":null,"abstract":"Purpose: A new two-step self-etch adhesive (2-SEA) free of hydrophilic monomers was evaluated. Its microtensile bond strength (µTBS) to dentin under various aging conditions, interfacial gap formation, water sorption/solubility, and formation of an acid-base resistant zone (ABRZ) were evaluated and compared with a gold-standard 2-SEA.Materials and methods: The new 2-SEA G2-Bond Universal (G2; GC) was compared to Clearfil SE Bond 2 (CSE2, Kuraray Noritake). Their µTBS to sound coronal dentin was tested after 1 week, 10,000 thermal cycles (TC), 20,000 TC, 6 months and 1 year. Failure mode was determined using scanning electron microscopy (SEM). Gap formation at the interface of 2-mm deep tapered cavities with an enamel border was observed using swept-source optical coherence tomography after 1 day, 1 week, 10,000 TC, and 20,000 TC. In addition, water sorption and solubility of the bonding agents was measured, and ABRZ formation was evaluated using SEM.Results: There was no significant difference in µTBS between G2 and CSE2 (p > 0.05), and the aging conditions had no significant effect on µTBS (p > 0.05). In all groups, cohesive failures prevailed (55%-95%). Interfacial gap formation was initially similar for both adhesives (p > 0.05), but G2 exhibited a significantly lower gap formation than CSE2 after TC (p < 0.05). The water sorption of G2 was significantly lower compared to CSE2 (p < 0.05), and their solubility was statistically similar (p > 0.05). ABRZ of similar thickness was observed with both adhesives.Conclusion: The new 2-SEA exhibited stable dentin bonding and increased hydrophobicity resulting from the absence of hydrophilic monomers.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"23 6","pages":"505-512"},"PeriodicalIF":4.6000,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.3290/j.jad.b2288233","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}

引用次数: 6

Abstract

Purpose: A new two-step self-etch adhesive (2-SEA) free of hydrophilic monomers was evaluated. Its microtensile bond strength (µTBS) to dentin under various aging conditions, interfacial gap formation, water sorption/solubility, and formation of an acid-base resistant zone (ABRZ) were evaluated and compared with a gold-standard 2-SEA.

Materials and methods: The new 2-SEA G2-Bond Universal (G2; GC) was compared to Clearfil SE Bond 2 (CSE2, Kuraray Noritake). Their µTBS to sound coronal dentin was tested after 1 week, 10,000 thermal cycles (TC), 20,000 TC, 6 months and 1 year. Failure mode was determined using scanning electron microscopy (SEM). Gap formation at the interface of 2-mm deep tapered cavities with an enamel border was observed using swept-source optical coherence tomography after 1 day, 1 week, 10,000 TC, and 20,000 TC. In addition, water sorption and solubility of the bonding agents was measured, and ABRZ formation was evaluated using SEM.

Results: There was no significant difference in µTBS between G2 and CSE2 (p > 0.05), and the aging conditions had no significant effect on µTBS (p > 0.05). In all groups, cohesive failures prevailed (55%-95%). Interfacial gap formation was initially similar for both adhesives (p > 0.05), but G2 exhibited a significantly lower gap formation than CSE2 after TC (p < 0.05). The water sorption of G2 was significantly lower compared to CSE2 (p < 0.05), and their solubility was statistically similar (p > 0.05). ABRZ of similar thickness was observed with both adhesives.

Conclusion: The new 2-SEA exhibited stable dentin bonding and increased hydrophobicity resulting from the absence of hydrophilic monomers.

查看原文本刊更多论文

新型不含hema的两步自蚀刻胶能否提高牙本质粘接耐久性和边缘适应性?

目的:研究一种不含亲水性单体的两步自蚀刻胶粘剂(2-SEA)。在各种老化条件下，对其与牙本质的微拉伸结合强度(µTBS)、界面间隙形成、吸水性/溶解度和耐酸碱区(ABRZ)的形成进行了评估，并与金标准2-SEA进行了比较。材料与方法:新型2-SEA G2- bond Universal (G2;GC)与Clearfil SE Bond 2 (CSE2, Kuraray Noritake)进行比较。分别在1周、1万次热循环(TC)、2万次热循环(TC)、6个月和1年后测试他们对健全冠状牙本质的µTBS。用扫描电子显微镜(SEM)确定了失效模式。在1天，1周，10,000 TC和20,000 TC后，使用扫描源光学相干断层扫描观察2 mm深锥形牙釉质边界界面的间隙形成。此外，还测量了粘结剂的吸水性和溶解度，并利用扫描电镜对ABRZ的形成进行了评价。结果:G2与CSE2之间µTBS差异无统计学意义(p > 0.05)，衰老条件对µTBS无显著影响(p > 0.05)。在所有组中，内聚失败普遍存在(55%-95%)。两种粘接剂的界面间隙形成初始相似(p > 0.05)，但G2在TC后的间隙形成明显低于CSE2 (p < 0.05)。与CSE2相比，G2的吸水率显著降低(p < 0.05)，溶解度差异有统计学意义(p > 0.05)。两种胶粘剂的ABRZ厚度相近。结论:新的2-SEA具有稳定的牙本质键合，并且由于缺乏亲水性单体而增加了疏水性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464