Enhancing resin-zirconia bonding: Influence of decontamination strategies on saliva-contaminated high-translucent zirconia.

IF 1.2 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
American journal of dentistry Pub Date : 2025-08-01
Secil Ozkan Ata, Rumeysa Okur
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引用次数: 0

Abstract

Purpose: To evaluate the effect of different decontamination protocols on the bonding strength of MDP-containing resin cement to saliva-contaminated zirconia ceramic.

Methods: 144 zirconia samples (12 mmx12 mmx1.2 mm) were prepared from 4Y-TZP and 6Y-TZP blocks, sandblasted with 50 μm Al₂O₃, and contaminated with artificial saliva. Samples were divided into six groups (n=24) based on decontamination method: sintered (CON), Rocatec-treated (ROC), Al₂O₃ abraded (AL), water-cleaned (HO), Ivoclean-treated (IVO), and 37% H₃PO₄-cleaned (PH). Pre-prepared resin cylinders (2.0 mm diameter, 3.0 mm height) were bonded to zirconia using MDP-containing resin cement (Panavia SA) and light-cured. All bonded samples underwent thermocycling (5°C-55°C, 10,000 cycles for 1 week, 50,000 cycles for 6 months, and 100,000 cycles for 12 months) to simulate intraoral aging. Shear bond strength was assessed at 1 week, 6 months, and 12 months using a universal testing machine. Surface roughness parameters (Rq, Ra) were measured with a digital profilometer, and adhesive failures were analyzed via scanning electron microscopy (SEM). Data were evaluated using one-way ANOVA and Tukey's post hoc test (α= 0.05). Weibull analysis was performed to assess the reliability and probability of bond strength failure. Additionally, Kaplan-Meier survival analysis was conducted to evaluate the long-term durability of resin-zirconia bonds over time.

Results: For 4Y-TZP, Ivoclean (1768±32 MPa) and Al₂O₃ abrasion (1541±36 MPa) achieved the highest shear bond strengths at 1 week. In contrast, 6Y-TZP exhibited lower bond strengths, with sintered and Rocatec-treated groups performing moderately. Surface roughness analysis showed that sintered and Ivoclean-treated 4Y-TZP had lower roughness (Rq ~14.8, Ra ~0.5), while 6Y-TZP had higher values, particularly after H₃PO₄ treatment (Rq 61.6, Ra 119.7).

Clinical significance: Selecting appropriate decontamination methods such as Ivoclean application or airborne-particle abrasion with Al₂O₃-based on the zirconia type is essential to achieve durable resin bonding and ensure the long-term success of high-translucency zirconia restorations.

增强树脂-氧化锆结合:去污策略对唾液污染高半透明氧化锆的影响。
目的:评价不同去污方案对含mdp树脂水泥与唾液污染氧化锆陶瓷粘接强度的影响。方法:在4Y-TZP和6Y-TZP块上制备12mmx12mmx1.2 mm的氧化锆样品144个,用50 μm Al₂O₃喷砂,并用人工唾液污染。根据去污方法将样品分为6组(n=24):烧结(CON)、rocatec处理(ROC)、Al₂O₃研磨(Al)、水清洗(HO)、ivoclean处理(IVO)和37% H₃PO₄清洗(PH)。预先制备的树脂柱(直径2.0 mm,高度3.0 mm)使用含mdp的树脂水泥(Panavia SA)与氧化锆粘合并光固化。所有黏合样品进行热循环(5°C-55°C, 10,000次循环1周,50,000次循环6个月,100,000次循环12个月)以模拟口腔内老化。使用通用试验机在1周、6个月和12个月时评估剪切粘结强度。用数字轮廓仪测量表面粗糙度参数(Rq, Ra),并通过扫描电子显微镜(SEM)分析粘接失效。资料采用单因素方差分析和Tukey事后检验(α= 0.05)。使用威布尔分析来评估粘接强度失效的可靠性和概率。此外,还进行了Kaplan-Meier生存分析,以评估树脂-氧化锆键的长期耐久性。结果:对于4Y-TZP, Ivoclean(1768±32 MPa)和Al₂O₃abrasion(1541±36 MPa)在1周时获得了最高的剪切结合强度。相比之下,6Y-TZP表现出较低的结合强度,烧结组和rocatec处理组表现中等。表面粗糙度分析表明,烧结和ivoclean处理的4Y-TZP具有较低的粗糙度(Rq ~14.8, Ra ~0.5),而经过H₃PO₄处理的6Y-TZP具有较高的粗糙度(Rq 61.6, Ra 119.7)。临床意义:根据氧化锆的类型,选择合适的去污方法,如使用Ivoclean或使用Al₂O₃空气颗粒磨蚀,对于实现持久的树脂粘接和确保高半透明氧化锆修复的长期成功至关重要。
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
American journal of dentistry
American journal of dentistry 医学-牙科与口腔外科
CiteScore
2.40
自引率
7.10%
发文量
57
审稿时长
1 months
期刊介绍: The American Journal of Dentistry, published by Mosher & Linder, Inc., provides peer-reviewed scientific articles with clinical significance for the general dental practitioner.
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