Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
PLoS One. 2018 Apr 9;13(4):e0195367. doi: 10.1371/journal.pone.0195367. eCollection 2018.
Universal adhesives are new systems that can be used in etch-and-rinse (ER) and self-etch (SE) modes. This in vitro study evaluated the bonding performance of a universal adhesive in ER mode and SE mode with two irrigants for luting fiber posts in the root canal.
After separation of the roots from the crowns of 56 maxillary central incisors and endodontic treatment, 10-mm post space was prepared. The roots were divided into seven groups according to irrigant/adhesive protocol used for cementation of posts: 1) sodium hypochlorite (NaOCl) irrigant + acid etching + One-Step Plus, 2) NaOCl + Clearfil SE Bond (CSE) and 3) EDTA + CSE as controls; 4) NaOCl + All-Bond Universal (AB) in ER mode, 5) NaOCl + AB in SE mode, 6) EDTA + AB in SE mode, 7) distilled water + AB in SE mode. Posts were luted using Duo-link. The bonded roots were sectioned into microslices. After push-out bond strength (PBS) testing, data in MPa were analyzed with two-way ANOVA and Tukey test (α = 0.05).
PBS was significantly affected by irrigation/adhesive protocol and root region (P<0.05), with no significant interaction of these factors. PBS of ABU in ER mode with NaOCl and in SE mode with NaOCl or EDTA was comparable to that in the respective controls. The highest and lowest PBSs were recorded for ABU in the SE mode with EDTA (15.38 ± 4) and NaOCl (10.17 ± 3.5), respectively. PBS of AB in ER and SE modes was similar when distilled water was used in the SE mode.
Adhesive performance of AB in the ER mode was comparable to or different from the SE mode, depending on the irrigant used to prepare post space in SE approach. AB could behave as a reliable bonding for post cementation.
通用型黏合剂是一种新型系统，可用于酸蚀冲洗（etch-and-rinse，ER）和自酸蚀（self-etch，SE）模式。本体外研究评估了一种通用黏合剂在 ER 模式和 SE 模式下，采用两种冲洗剂对根管内纤维桩黏结性能的影响。
从 56 颗上颌中切牙的冠部和根部分离后，制备 10-mm 的桩腔。根据黏结纤维桩时使用的冲洗剂/黏合剂方案，将牙根分为 7 组：1）次氯酸钠（sodium hypochlorite，NaOCl）冲洗剂+酸蚀+One-Step Plus；2）NaOCl+CSE；3）EDTA+CSE 作为对照；4）NaOCl 在 ER 模式下的 All-Bond Universal（AB）；5）NaOCl 在 SE 模式下的 AB；6）EDTA 在 SE 模式下的 AB；7）SE 模式下的蒸馏水+AB。采用 Duo-link 黏结纤维桩。将黏结的牙根切成微切片。进行推出黏结强度（push-out bond strength，PBS）测试后，采用双因素方差分析和 Tukey 检验（α=0.05）对 MPa 数据进行分析。
冲洗/黏合剂方案和牙根区域显著影响 PBS（P<0.05），但这些因素之间没有显著的相互作用。NaOCl 冲洗的 ER 模式下的 ABU 和 NaOCl 或 EDTA 冲洗的 SE 模式下的 ABU 的 PBS 与各自的对照组相似。在 SE 模式下用 EDTA 冲洗时 PBS 最高（15.38±4），而在用 NaOCl 冲洗时 PBS 最低（10.17±3.5）。当 SE 模式下使用蒸馏水时，AB 在 ER 和 SE 模式下的 PBS 相似。
AB 在 ER 模式下的黏结性能与 SE 模式下的相似或不同，这取决于 SE 模式下用于制备桩腔的冲洗剂。AB 可作为纤维桩黏结的可靠黏合剂。
