Influence of different immediate dentin sealing strategies on bond strength of indirect resin nanoceramic restorations

IF 1.8 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

European Journal of Oral Sciences Pub Date : 2024-03-18 DOI:10.1111/eos.12983

Fatma-Alzahraa Mohamed Tahoun, Hany Abdel-Ghafar Kehela, Dina Mohamed Nasr

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引用次数: 0

Abstract

In this study, we evaluated the effect of four different strategies for bonding a CAD/CAM resin nanoceramic restoration (Lava Ultimate, 3M) to the dentin surface using a universal adhesive (Scotch Bond Universal, 3M) and adhesive resin cement (RelyX Ultimate, 3M) on the shear bond strength (SBS) and failure mode. The strategies comprised: (i) immediate sealing, immediate bonding; (ii) immediate sealing, bonding after 2 weeks with provisional restoration; (iii) immediate sealing with flowable resin composite reinforcement and bonding after 2 weeks with provisional restoration; and (iv) no immediate sealing, and bonding after 2 weeks with provisional restoration. After bonding, all the specimens were thermocycled, shear tests were performed using a universal testing machine, and failure modes were determined using stereomicroscope and scanning electron microscopy. The highest mean SBS was recorded with immediate sealing, immediate bonding strategy. Most adhesive failures with exposed dentinal tubules were noted in specimens exposed to bonding after 2 weeks with no immediate sealing, which was associated with the lowest SBS. Mixed failures predominated in all immediate dentin sealing groups. Immediate sealing with universal adhesives improves SBS, particularly in the single-visit approach, which has shown significantly better performance, whereas the provisional phase has a negative effect.

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不同牙本质即刻封闭策略对间接树脂纳米陶瓷修复体粘接强度的影响

在这项研究中，我们评估了使用通用粘合剂（Scotch Bond Universal，3M）和粘合树脂水泥（RelyX Ultimate，3M）将 CAD/CAM 树脂纳米陶瓷修复体（Lava Ultimate，3M）粘结到牙本质表面的四种不同策略对剪切粘结强度（SBS）和失败模式的影响。策略包括：(i) 立即封闭，立即粘接；(ii) 立即封闭，2 周后粘接临时修复体；(iii) 立即封闭，使用可流动树脂复合材料加固，2 周后粘接临时修复体；(iv) 不立即封闭，2 周后粘接临时修复体。粘接后，对所有试样进行热循环，使用万能试验机进行剪切测试，并使用体视显微镜和扫描电子显微镜确定破坏模式。即刻封闭、即刻粘接策略的平均 SBS 值最高。大多数暴露牙本质小管的粘接失败都发生在 2 周后粘接的试样上，没有立即密封，SBS 最低。在所有牙本质即刻封闭组中，混合失败占多数。使用通用粘合剂进行即刻封闭可改善 SBS，特别是在单次就诊方法中，其性能明显更好，而临时阶段则会产生负面影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

European Journal of Oral Sciences 医学-牙科与口腔外科

CiteScore

3.50

自引率

5.30%

发文量

审稿时长

2 months

期刊介绍： The European Journal of Oral Sciences is an international journal which publishes original research papers within clinical dentistry, on all basic science aspects of structure, chemistry, developmental biology, physiology and pathology of relevant tissues, as well as on microbiology, biomaterials and the behavioural sciences as they relate to dentistry. In general, analytical studies are preferred to descriptive ones. Reviews, Short Communications and Letters to the Editor will also be considered for publication. The journal is published bimonthly.