不同玷污层状态对两步法自酸蚀牙本质粘接系统粘接强度的影响

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摘要目的：比较金刚砂车针和600目砂纸产生的牙本质玷污层对两步法自酸蚀牙本质粘接系统微拉伸粘接强度的影响。方法：暴露28颗前磨牙的咬合面的牙本质，随机分为2组，分别用高速金刚砂车针（车针组）和600目砂纸（砂纸组）打磨牙本质表面。每组选择2颗牙齿直接用扫描电镜观察牙本质玷污层，剩余的12颗牙齿的打磨面用两步法自酸蚀牙本质粘接系统OptiBond XTR粘接复合树脂。垂直于粘接面将粘接好的样本切成1 mm厚的薄片，每组随机选取6片在扫描电镜下观察粘接界面的形态；剩余薄片被切割成横截面积为1.0 mm2的样本，每组随机选择15个样本进行微拉伸力的检测。结果：砂纸组的玷污层薄而均匀；车针组的玷污层较厚，且在牙本质小管内形成管塞。砂纸组和车针组的微拉伸粘接强度分别为（38.77±4.54）MPa和（38.30±5.11）MPa，2组间差异无统计学意义（P＞0.05）。两步法自酸蚀牙本质粘接系统OptiBond XTR对2种打磨方法产生的粘接面均有良好的渗透，产生的树脂突与底部连接紧密，根部有明显楔状袖口样（funnel-shapped）结构。结论：车针和砂纸打磨形成不同的玷污层，但对两步法自酸蚀牙本质粘接系统OptiBond XTR的微拉伸粘接强度无明显影响。

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	郑铁丽
	张佳慧
	毛佳杰
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关键词 ：牙本质, 玷污层, 两步法自酸蚀牙本质粘接系统, 微拉伸粘接强度

Abstract：Objective: To compare the influence of the smear layer generated by the high-speed diamond bur or 600 grit silicon carbide paper on the microtensile bond strength (uTBS) of a two-step self-etching adhesive to human dentin. Methods: Flat medium occlusal dentin surfaces of 28 premolars were exposed and divided into 2 groups for further grinding with either a high-speed diamond or 600 grit silicon carbide paper. Two prepared dentin surfaces treated by each method were evaluated for the characteristics of smear layer using a scanning electron microscope (SEM). Twelve specimens from each grinded group were applied with a 2-step self-etching adhesive (OptiBond XTR), then built up with a resin composite. Each bonded specimen was sectioned into 1 mm-thick slab perpendicular to bonded interface.Six slabs from each group were randomly selected for observation of the bonded interface using SEM. Other slabs were cut into 1 mm×1 mm specimens. Fifteen specimens were randomly selected to be tested for microtensile bond strength. Results: The high-speed diamond bur created a significantly thicker and more rough smear layer than the silican carbide paper. There was no statistically significant difference (P>0.05) in microtensile bond strength between the groups. The 2-step self-etching adhesive (OptiBond XTR) could infiltrate well into the peritubular and intratubular dentin, then hybrid layer and resin tags were formed. Conclusion: Different smear layers had no significant influence on the uTBS of Optibond XTR bond to dentin.

Key words： dentin smear layer two-step self-etching adhesive microtensile bond strength

收稿日期: 2017-11-21

基金资助:温州市科技局科研基金资助项目（Y20160415）。

作者简介: 郑铁丽（1977-），女，河北唐山人，主治医师，硕士。

链接本文:

https://xb.wmu.edu.cn/CN/ 或 https://xb.wmu.edu.cn/CN/Y2018/V48/I6/433

[1] MILIA E, CUMBO E, CARDOSO R J, et al. Current dental adhesives systems. A narrative review[J]. Curr Pharm Des, 2012, 18(34): 5542-5552.
[2] VANAJASAN P P, DHAKSHINAMOORTHY M, RAO C S. Factors affecting the bond strength of self-etch adhesives: A meta-analysis of literature[J]. J Conserv Dent, 2011, 14(1): 62-67. [3] VIOLICH D R, CHANDLER N P. The smear layer in endodontics-a review[J]. Int Endod J, 2010, 43(1): 2-15.
[4] OLIVEIRA S S, PUGACH M K, HILTON J F, et al. The influence of the dentin smear layer on adhesion: a self-etching primer vs. a total-etch system[J]. Dent Mater, 2003, 19(8): 758-767.
[5] 费健, 骆小平, 陈亚琴, 等. 不同表面粒度车针预备所致玷污层对牙本质粘结强度的影响[J]. 口腔医学研究, 2007, 23(4): 408-410.
[6] SHINODA Y, NAKAJIMA M, HOSAKA K, et al. Effect of smear layer characteristics on dentin bonding durability of HEMA-free and HEMA-containing one-step self-etch adhe-sives[J]. Dent Mater J, 2011, 30(4): 501-510.
[7] YIU C K, HIRAISHI N, KING N M, et al. Effect of dentinal surface preparation on bond strength of self-etching adhe-sives[J]. J Adhes Dent, 2008, 10(3): 173-182.
[8] THANATVARAKORN O, NAKAJIMA M, PRASANSUTTIPORN T, et al. Effect of smear layer deproteinizing on resin-dentine interface with self-etch adhesive[J]. J Dent, 2014, 42(3): 298-304.
[9] RIRATTANAPONG P, SENAWONGSE P, HARNIRATTISAL C, et al. Effect of smear layers created by different burs on durability of self-etching adhesive bond to dentin of primary teeth[J]. J Clin Pediatr Dent, 2015, 39(3): 224-230.
[10] HEGDE M N, MANJUNATH J. Bond strength of newer dentin bonding agents in different clinical situations[J]. Oper Dent, 2011, 36(2):169-176.
[11] SILVA E S M H, CARNEIRO K G, LOBATO M F, et al. Adhesive systems: important aspects related to their composition and clinical use[J]. J Appl Oral Sci, 2010, 18(3): 207-214.
[12] MEHARRY M R, MOAZZAMI S M, LI Y. Comparison of enamel and dentin shear bond strengths of current dental bonding adhesives from three bond generations[J]. Oper Dent, 2013, 38(6): E237-245.
[13] KRäMER N, TILCH D, LüCKER S, et al. Status of ten self-etch adhesives for bonding to dentin of primary teeth[J]. Int J Paediatr Dent, 2014, 24(3): 192-199.
[14] WANG R, SHI Y, LI T, et al. Adhesive interfacial characteristics and the related bonding performance of four self-etching adhesives with different functional monomers applied to dentin[J]. J Dent, 2017, 62: 72-80.
[15] TAKAMIZAWA T, BARKMEIER W W, SAI K, et al. Influence of different smear layers on bond durability of self-etch adhesives[J]. Dent Mater, 2018, 34(2): 246-259.