The Mechanical Performance of a Novel Self-Adhesive Restorative Material.

IF 2.5 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Adhesive Dentistry Pub Date : 2020-01-01 DOI:10.3290/j.jad.a43997

Ulrich Lohbauer, Renan Belli

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引用次数: 18

Abstract

Purpose: The development of a novel material requires a comprehensive pre-clinical assessment of clinical longevity before any market release. This study aimed to investigate the mechanical performance of a novel self-adhesive restorative material (ASAR MP4).

Materials and methods: Fracture strength (FS), flexural fatigue strength (FFS) and fracture toughness (KIc) were measured for the experimental material ASAR MP4 in self-cure (SC) and light-cure (LC) mode. ASAR MP4 was processed in capsules. Three direct resin composites (CeramX mono+, DentsplySirona; Heliomolar, IvoclarVivadent; Filtek Supreme XTE, 3M) and two glass-ionomer-cement (GIC) based materials (Equia Forte, GC; Fuji II LC, GC) were selected for comparison with ASAR MP4. FS specimens (n = 15) were tested in a 4-point bending configuration according to ISO 4049 and 9917. FFS specimens (n = 25) were additionally stressed for 104 loading cycles using the staircase approach. The single-edge-notch beam (SENB) configuration was selected for determining KIc according to ISO 13586. All specimens were stored for 14 days at 37°C. Data were analyzed using Weibull statistics (FS), ANOVA (FS, KIc), and the non-parametric Mann-Whitney U-test (FFS).

Results: The FS, FFS and KIc data of the ASAR MP4 material reveal a mechanical performance in the range of the successful permanent direct resin composites CeramX mono+ and Heliomolar. The results for ASAR MP4 in SC mode were superior to the LC mode. A fine-grained and pore-free microstructure was observed.

Conclusion: Within the limitations of this study we conclude that the novel self-adhesive restorative material ASAR MP4 exhibits mechanical performance close to that of the resin composites Heliomolar and CeramX mono+, both indicated for permanent use in the load-bearing posterior region. Processing the material in either self-cure or light-cure mode led to superior performance over glass-ionomer cements.

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一种新型自粘修复材料的力学性能。

目的:一种新材料的开发需要在任何市场发布之前对临床寿命进行全面的临床前评估。本研究旨在研究一种新型自粘修复材料(ASAR MP4)的力学性能。材料与方法:对实验材料ASAR MP4在自固化(SC)和光固化(LC)模式下的断裂强度(FS)、弯曲疲劳强度(FFS)和断裂韧性(KIc)进行了测量。ASAR MP4在胶囊中处理。三种直接树脂复合材料(CeramX mono+， DentsplySirona;Heliomolar IvoclarVivadent;Filtek Supreme XTE, 3M)和两种玻璃离子水泥(GIC)基材料(Equia Forte, GC;选择Fuji II LC, GC)与ASAR MP4进行比较。FS试件(n = 15)按照ISO 4049和9917在4点弯曲配置下进行测试。采用楼梯法对25个FFS试件进行104个加载周期的额外应力处理。根据ISO 13586的要求，选择单边缺口光束(SENB)结构来测定KIc。所有标本在37℃下保存14天。采用威布尔统计(FS)、方差分析(FS, KIc)和非参数Mann-Whitney u检验(FFS)对数据进行分析。结果:ASAR MP4材料的FS, FFS和KIc数据显示其力学性能在成功的永久直接树脂复合材料CeramX mono+和Heliomolar的范围内。ASAR MP4在SC模式下的检测结果优于LC模式。观察到细晶无孔的显微组织。结论:在本研究的局限性内，我们得出结论，新型自粘修复材料ASAR MP4具有接近树脂复合材料Heliomolar和CeramX mono+的力学性能，两者都适合永久用于承重后区。以自固化或光固化方式处理该材料，其性能优于玻璃离子聚合物水泥。

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

Journal of Adhesive Dentistry 医学-牙科与口腔外科

CiteScore

5.20

自引率

6.10%

发文量

审稿时长

6-12 weeks

期刊介绍： New materials and applications for adhesion are profoundly changing the way dentistry is delivered. Bonding techniques, which have long been restricted to the tooth hard tissues, enamel, and dentin, have obvious applications in operative and preventive dentistry, as well as in esthetic and pediatric dentistry, prosthodontics, and orthodontics. The current development of adhesive techniques for soft tissues and slow-releasing agents will expand applications to include periodontics and oral surgery. Scientifically sound, peer-reviewed articles explore the latest innovations in these emerging fields.