冲洗液对复合树脂与深层边缘提升材料的粘结强度有影响吗？一项体外研究。

Do irrigation solutions effect bond strength of composite resin to deep margin elevation material? An in-vitro study.

作者信息

Mutlu Şeref Nur, Fidancıoğlu Yasemin Derya, Özkan Hatice Büyüközer, Ülker Hayriye Esra

机构信息

Health Vocational School, Necmettin Erbakan University, Konya, 42200, Turkey.

Department of Endodontics, Faculty of Dentistry, Alanya Alaaddin Keykubat University, Alanya, Antalya, Turkey.

出版信息

BMC Oral Health. 2025 May 28;25(1):831. doi: 10.1186/s12903-025-06229-2.

DOI:10.1186/s12903-025-06229-2

PMID:40437497

Abstract

BACKGROUND

The deep margin elevation (DME) technique provides advantages for root canal treatment, but the impact of applied irrigation protocols on bonding for subsequent restorations is a significant concern. The aim of this in vitro study was to test the bond strength of a flowable resin material used in DME restorations after composite restorations were exposed to different irrigation protocols.

METHODS

Standard composite samples (G-aenial Universal Injectable) were divided into nine groups according to irrigation protocols. Untreated composite sample were used as control. The group A were kept in 5.25% sodium hypochlorite (NaOCl) and the group B were kept in 3.5% chlorine dioxide (ClO) for 30 min. Then, the following treatment protocols were applied to the subgroups, respectively. Group1A/B: 17%EDTA + 5.25%NaOCl + Distilled Water + 2%CHX, Group2A/B: 18%HEDP + 5.25%NaOCl + Distilled Water + 2%CHX, Group3A/B: 17%EDTA + 3.5%ClO + Distilled Water + 2%CHX, Group4A/B: 18%HEDP + 3.5%ClO + Distilled Water + 2%CHX. After irrigation procedures, samples were washed with distilled water and sandblasted. G-Premio Bond and composite restorations (G-aenial A'CHORD) were applied. The samples were then cut perpendicular to the interface with an IsoMet low speed diamond saw under water. For the microtensile bond strength test, rectangular sticks with an average cross-sectional area of ∼1 mm will be obtained. The first section with 1-mm thickness was excluded to prevent its possible confounding effect on the results. Three sections were obtained of each sample (n = 15) and tested for microtensile bond strength. The analysis of the data collected in accordance with the purpose of the study was performed with One-way ANOVA (n = 15). For multiple comparisons between groups, it was evaluated with Tukey HSD test.

RESULTS

Groups A1 and A2, immersed in NaOCl for 30 min, showed statistically significantly lower bond strength compared to Group B3, immersed in ClO₂ for 30 min, and the control group (P < 0.05). The use of ClO₂ irrigation is recommended due to its positive effects on bond strength.

CONCLUSION

Prolonged NaOCl irrigation may adversely affect the bond strength of flowable composites used for deep margin elevation.

摘要

背景

深层边缘提升（DME）技术为根管治疗带来了优势，但应用的冲洗方案对后续修复体粘结的影响是一个重大问题。本体外研究的目的是测试复合修复体在暴露于不同冲洗方案后，用于DME修复的可流动树脂材料的粘结强度。

方法

根据冲洗方案将标准复合样本（G-aenial Universal Injectable）分为九组。未处理的复合样本用作对照。A组样本置于5.25%次氯酸钠（NaOCl）中，B组样本置于3.5%二氧化氯（ClO₂）中30分钟。然后，分别对各亚组应用以下处理方案。1A/B组：17%乙二胺四乙酸（EDTA）+5.25%NaOCl+蒸馏水+2%氯己定（CHX），2A/B组：18%羟基亚乙基二膦酸（HEDP）+5.25%NaOCl+蒸馏水+2%CHX，3A/B组：17%EDTA+3.5%ClO₂+蒸馏水+2%CHX，4A/B组：18%HEDP+3.5%ClO₂+蒸馏水+2%CHX。冲洗程序完成后，样本用蒸馏水冲洗并进行喷砂处理。应用G-Premio Bond和复合修复材料（G-aenial A'CHORD）。然后在水下用IsoMet低速金刚石锯垂直于界面切割样本。对于微拉伸粘结强度测试，将获得平均横截面积约为1平方毫米的矩形棒。排除厚度为1毫米的第一部分，以防止其对结果可能产生的混杂影响。每个样本获取三个部分（n = 15）并测试微拉伸粘结强度。根据研究目的对收集的数据进行单因素方差分析（n = 15）。对于组间的多重比较，采用Tukey HSD检验进行评估。