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四种不同,最近引入的自雕刻粘合剂的耐久性

Sayaka Kitahara¹, Shojiro Shimizu¹, Tomohiro Takagaki¹

¹Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho, Gifu 501-0296, Japan.

Materials (Basel, Switzerland)

|September 14, 2024

概括

这项研究评估了四种自蚀刻粘合剂 (SEA) 在热循环后对牙的长期粘合耐用性. 一些通用粘合剂显示,随着老化,粘合强度有所提高,但粘合性故障增加,这表明有改进的余地.

科学领域:

牙科材料科学牙科材料科学
粘合式牙科粘合式牙科
聚合物化学聚合物化学

背景情况:

自雕刻粘合剂 (SEAs) 对于现代牙科修复至关重要.
在模拟的口内条件下评估SEAs的长期耐用性和聚合是必不可少的.
了解热循环对键强度和转换的影响,是预测临床性能的关键.

研究的目的:

为了比较两个阶段和一个阶段的SEAs在24小时和热循环后与牙的粘合耐久性.
测量评估的SEAs的现场聚合转换 (DC) 的程度.
评估老化和热应力对不同SEAs微拉伸键强度 (μTBS) 的影响.

主要方法:

四种SEA (Clearfil SE Bond 2,G2-Bond Universal,ScotchbondTM Universal Plus Adhesive,Clearfil Universal Bond Quick) 在牛牙上进行了测试. 这四种SEA在牛牙上进行了测试.
在微拉伸键强度 (μTBS) 测试之前,样品经历了0,10,000或20,000个热循环 (TC).
在现场测量了聚合转换 (DC) 的程度,使用激光拉曼显微镜.

主要成果:

使用10,000TC的G2-Bond通用 (G2B) 和使用20,000TC的ScotchbondTM通用加粘合剂 (SBU) 显示出明显高于对照组 (TC0) 的μTBS.
在10000TC后,SBU的μTBS显著低于G2B,G2B和SBU在TC后显示出更多的粘合器故障.
平均直流%在粘合剂之间有所不同,新的无MDP和无HEMA的两步SEA的性能与黄金标准相当.

结论:

某些通用SEAs在老化和热应力下显示出更好的粘合耐用性.
在热循环后,一些SEA中的粘合剂故障增加表明潜在的长期挑战.
虽然有希望,但为了最佳的临床寿命,需要进一步改进自蚀刻粘合剂配方.

关键词:

转换的程度转换的程度.微拉力键强度强度的微拉力键强度.自雕刻的粘合剂自雕刻的粘合剂热循环的热周期这是一种普遍的债券.

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