通用粘结剂与牙本质的粘结——新瓶装旧酒？

Bonding of universal adhesives to dentine--Old wine in new bottles?

作者信息

Chen C, Niu L-N, Xie H, Zhang Z-Y, Zhou L-Q, Jiao K, Chen J-H, Pashley D H, Tay F R

机构信息

Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University; Department of Operative Dentistry & Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China.

State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China.

出版信息

J Dent. 2015 May;43(5):525-36. doi: 10.1016/j.jdent.2015.03.004. Epub 2015 Mar 20.

DOI:10.1016/j.jdent.2015.03.004

PMID:25797702

Abstract

OBJECTIVE

Multi-mode universal adhesives offer clinicians the choice of using the etch-and-rinse technique, selective enamel etch technique or self-etch technique to bond to tooth substrates. The present study examined the short-term in vitro performance of five universal adhesives bonded to human coronal dentine.

METHODS

Two hundred non-carious human third molars were assigned to five groups based on the type of the universal adhesives (Prime&Bond Elect, Scotchbond Universal, All-Bond Universal, Clearfil Universal Bond and Futurabond U). Two bonding modes (etch-and-rinse and self-etch) were employed for each adhesive group. Bonded specimens were stored in deionized water for 24h or underwent a 10,000-cycle thermocycling ageing process prior to testing (N=10). Microtensile bond testing (μTBS), transmission electron microscopy (TEM) of resin-dentine interfaces in non-thermocycled specimens and scanning electron microscopy (SEM) of tracer-infused water-rich zones within hybrid layers of thermocycled specimens were performed.

RESULTS

Both adhesive type and testing condition (with/without thermocycling) have significant influences on μTBS. The use of each adhesive in either the etch-and-rinse or self-etch application mode did not result in significantly different μTBS to dentine. Hybrid layers created by these adhesives in the etch-and-rinse bonding mode and self-etch bonding mode were ∼5μm and ≤0.5μm thick respectively. Tracer-infused regions could be identified within the resin-dentine interface from all the specimens prepared.

CONCLUSION

The increase in versatility of universal adhesives is not accompanied by technological advances for overcoming the challenges associated with previous generations of adhesives. Therapeutic adhesives with bio-protective and bio-promoting effects are still lacking in commercialized adhesives.

CLINICAL SIGNIFICANCE

Universal adhesives represent manufacturers' attempt to introduce versatility in product design via adaptation of a single-bottle self-etch adhesive for other application modes without compromising its bonding effectiveness.

摘要

目的

多模式通用型粘结剂为临床医生提供了采用酸蚀冲洗技术、选择性釉质酸蚀技术或自酸蚀技术粘结牙体组织的选择。本研究检测了五种通用型粘结剂粘结人冠部牙本质的短期体外性能。

方法

根据通用型粘结剂的类型（Prime&Bond Elect、Scotchbond Universal、All-Bond Universal、Clearfil Universal Bond和Futurabond U），将200颗无龋的人第三磨牙分为五组。每组粘结剂采用两种粘结模式（酸蚀冲洗和自酸蚀）。粘结标本在去离子水中保存24小时，或在测试前经过10000次循环的热循环老化处理（N = 10）。进行微拉伸粘结测试（μTBS）、非热循环标本树脂-牙本质界面的透射电子显微镜（TEM）观察以及热循环标本混合层内富含示踪剂的富水区的扫描电子显微镜（SEM）观察。