用洗必泰处理过的牙本质上的自蚀刻粘合剂的显微拉伸粘合强度。

IF 1.1 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

European Journal of Prosthodontics and Restorative Dentistry Pub Date : 2024-02-29 DOI:10.1922/EJPRD_2590Furtado09

C O D A Furtado, K Baroudi, M Amaral, T N Amorim, K L Devito, M F de Goes, L A Salvio

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引用次数: 0

摘要

目的：评估自酸洗粘接剂系统在经2%洗必泰二氯葡萄糖酸盐（CHX）处理的牙本质中的微拉伸粘接强度：取下 20 颗人类臼齿的咬合面，将其分为八组：1A 组，Clearfil SE 粘接剂（SE），自酸蚀技术（TS）；1B 组，SE，TS，预先涂抹 CHX；2A 组，Scotchbond Universal（SBU）粘接剂，TS；2B 组，SBU 粘接剂，TS，预先涂抹 CHX；1C 组，SE，全酸蚀技术（TT）；1D 组，SE，TT，预先涂抹 CHX；2C 组，SBU，TT；2D 组，SBU，TT，预先涂抹 CHX。在杂化表面涂上复合树脂（5 毫米）。对样品进行微拉伸测试，并用扫描电子显微镜（SEM）和能量色散 X 射线（EDX）进行评估：与 1B 组（22,86±5,18）和 2B 组（27,02±5,58）相比，1A 组（39,77±11,56）和 2A 组（40,84±12,49）的粘接强度值较低。TS 组呈现出粘合剂型剥离断裂，而 TT 组则在混合层顶部呈现出粘合剂型剥离断裂。EDX 显示 TS 组存在 CHX 晶体，而 TT 组则没有：结论：在牙本质上使用洗必泰会降低自酸蚀技术粘接剂系统的粘接强度。

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Microtensile Bond Strength of Self-Etch Adhesives on Dentin Treated with Chlorhexidine.

Aim: To evaluate the microtensile bond strength of self-etching adhesive systems in dentin treated with 2% chlorhexidine digluconate (CHX).

Materials and methods: The occlusal surfaces of 20 human molars were removed and divided into eight groups: 1A, Clearfil SE adhesive (SE) with self-etching technique (TS); 1B, SE with TS and previous application of CHX; 2A, Scotchbond Universal (SBU) adhesive with TS; 2B, SBU adhesive with TS and previous application of CHX; 1C, SE with total-etching technique (TT); 1D, SE with TT and previous application of CHX; 2C, SBU with TT; 2D SBU with TT and previous application of CHX. Composite resin (5mm) was applied on the hybridized surface. Samples were subjected to microtensile test and evaluated on Scanning Electron Microscope (SEM) and with energy-dispersive X-ray (EDX).

Results: Low values of bond strength were observed in groups 1A (39,77±11,56) and 2A (40,84±12,49) comparing with 1B (22,86±5,18) and 2B (27,02±5,58). TS group presented adhesive type remover fracture while TT groups presented cohesive at the top of hybrid layer. EDX revealed the presence of CHX crystals for TS, which was not found in the TT.

Conclusion: The previous application of chlorhexidine on dentin decreased the bond strength of adhesive systems on self-etching technique.

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来源期刊

European Journal of Prosthodontics and Restorative Dentistry DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.30

自引率

7.70%

发文量

期刊介绍： The European Journal of Prosthodontics and Restorative Dentistry is published quarterly and includes clinical and research articles in subjects such as prosthodontics, operative dentistry, implantology, endodontics, periodontics and dental materials.