Hybrid Layer, Shear Bond Strength, and Fracture Patterns of Titanium Dioxide–Doped Phosphate Glass–Filled Universal Dental Adhesives

Q4 Dentistry

European Journal of General Dentistry Pub Date : 2024-07-24 DOI:10.1055/s-0044-1787789

Adam bin Husein, Sana Mhd. Fouad Seoudi, H. M. El-Damanhoury, Ibrahim Mahmood Aziz, E. A. Abou Neel

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Abstract

Objectives The aim of the study was to explore the potential effects of incorporating 5 and 10 wt% of TiO2-doped phosphate glass powder as fillers into the universal adhesive system. Materials and Methods Human permanent premolars and molars were used in the study. Five and 10 wt% of TiO2-doped phosphate glass powder as fillers were added into the universal adhesive system. Unmodified universal adhesive was used as control. The effects of the added filler in the universal adhesive were examined on hybrid layer formation at the resin composite and dentine interface (mesio-occlusal-distal [MOD] cavities) under scanning electron microscope (SEM), shear bond strength (SBS) of resin composite to dentine using shear bond testing machine, and the patterns of fracture at the resin composite–dentin interface, which were examined under stereomicroscope. The SBS analyses were performed with (8 samples per group, n = 24) and without (8 samples per group, n = 24) 5,000 cycles of thermocycling. Statistical Analysis One-way analysis of variance (ANOVA) was used to analyze the data of the SBS. For bond strength, the effects of adding fillers into the universal adhesive were analyzed. Results The SEM images showed that the hybrid layers were similar in all the groups of unmodified and modified adhesives. An ANOVA test revealed that the SBSs of control and modified adhesives were not significantly different before (p = 0.15) or after (p = 0.39) thermocycling for all the groups. The patterns of fracture revealed various types of fracture in all adhesive groups including composite resin, adhesive, and dentine failure. Composite resin fractures are the most encountered pattern of fracture. Conclusion Adding 5 and 10 wt% of TiO2 into universal adhesive did not adversely affect the hybrid layer, SBS, or mode of failure of composite resin to dentine. The pattern of fracture at the resin composite and dentine interface showed a favorable bonding with more cohesive than adhesive failure, particularly with the 5 wt% glass-modified adhesive group.

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二氧化钛掺磷酸盐玻璃填充通用牙科粘合剂的混合层、剪切粘接强度和断裂模式

目的该研究旨在探索在通用粘合剂系统中加入 5 和 10 wt%掺杂二氧化钛的磷酸盐玻璃粉作为填料的潜在效果。材料和方法研究使用了人类恒前磨牙和臼齿。在通用粘合剂系统中分别加入 5 和 10 wt%的掺杂二氧化钛的磷酸盐玻璃粉作为填料。未改性的通用粘合剂作为对照。在扫描电子显微镜（SEM）下观察了通用粘合剂中添加的填料对树脂复合材料和牙本质界面（中-外-远端[MOD]空腔）混合层形成的影响，使用剪切粘结试验机观察了树脂复合材料与牙本质的剪切粘结强度（SBS），并在体视显微镜下观察了树脂复合材料-牙本质界面的断裂形态。SBS分析是在进行了（每组 8 个样本，n = 24）和未进行（每组 8 个样本，n = 24）5,000 次热循环的情况下进行的。统计分析 SBS 数据采用单因素方差分析（ANOVA）。在粘接强度方面，分析了在通用粘合剂中添加填料的影响。结果扫描电镜图像显示，所有未改性和改性粘合剂组的混合层都很相似。方差分析测试表明，对照组和改性粘合剂的 SBS 在热循环前（p = 0.15）和热循环后（p = 0.39）均无显著差异。断裂模式显示所有粘合剂组都存在各种类型的断裂，包括复合树脂、粘合剂和牙本质断裂。复合树脂断裂是最常见的断裂形式。结论在通用粘合剂中添加 5 和 10 wt%的 TiO2 不会对复合树脂与牙本质的混合层、SBS 或破坏模式产生不利影响。树脂复合体与牙本质界面的断裂模式显示出良好的粘接性，内聚性大于粘接性破坏，尤其是 5 wt%的玻璃改性粘合剂组。

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来源期刊

European Journal of General Dentistry Dentistry-Dentistry (all)

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： European Journal of General Dentistry (EJGD) is one of the leading open-access international dental journal within the field of Dentistry. The aim of EJGD is publishing novel and high-quality research papers, as well as to influence the practice of dentistry at clinician, research, industry and policy-maker level on an international basis. EJGD publishes articles on all disciplines of dentistry including the cariology, orthodontics, oral surgery, preventive dentistry, periodontology, endodontology, operative dentistry, fixed and removable prosthodontics, dental biomaterials science, long-term clinical trials including epidemiology and oral health, technology transfer of new scientific instrumentation or procedures, as well as clinically relevant oral biology and translational research.Moreover, EJGD also publish the scientific researches evaluating the use of new biomaterials, new drugs and new methods for treatment of patients with different kinds of oral and maxillofacial diseases or defects, the diagnosis of oral and maxillofacial diseases with new methods, etc. Moreover, researches on the quality of life, psychological interventions, improving disease treatment outcomes, the prevention, diagnosis and management of cancer therapeutic complications, rehabilitation, palliative and end of life care, and support teamwork for cancer care and oral health care for old patients are also welcome. EJGD publishes research articles, case reports, reviews and comparison studies evaluating materials and methods in the all fields of related to dentistry.