表面地形和湿度对Y-TZP陶的剪接强度的影响
Suriyakul Wongsue1, Ornnicha Thanatvarakorn2, Taweesak Prasansuttiporn3
1Dental Section, Buddhasothorn Hospital, Na Muang, Muang, 24000, Chachoengsao, Thailand.
纳米级表面不规则性 (nSI%) 是牙科修复中强有力的树脂-合金键的关键. 较高的nSI%,粗度 (Ra) 和较低的接触角 (θc) 提高了微剪切键强度 (μSBS).
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料科学 牙科材料科学
- 表面工程是什么?表面工程是什么?
背景情况:
- 由于美学和强度,陶是牙科修复的首选材料.
- 和树脂水泥之间的有效结合需要机械和化学相互作用.
- 表面特性显著影响牙科修复的粘合耐用性.
研究的目的:
- 为了评估石表面的地形和湿度如何影响树脂水泥微剪断键强度 (μSBS).
- 为了确定各种表面预处理对的表面特征的影响.
- 为了确定影响树脂 - 基尼结合强度的关键表面参数.
主要方法:
- 板经过处理:没有处理,空气磨损 (AB),酸 (F),HF/酸 (FN),或HCl/酸 (CN).
- 使用原子力显微镜 (AFM) 分析了表面地形 (Ra,Rpv,Rsk,Rku,nSI%).
- 测量了树脂水泥粘合的表面湿度 (接触角度, θc) 和μSBS.
主要成果:
- 多重回归分析确定了纳米级表面不规则性 (nSI%) 作为μSBS (p < 0.001) 最重要的因素.
- 较高的平均粗度 (Ra) 和较低的接触角 (θc) 也与μSBS正相关.
- 表面处理显著改变了地形和湿度,影响了结合强度.
结论:
- 优化石表面地形,特别是增加nSI%和Ra,对于强大的树脂-石结合至关重要.
- 实现相对较低的表面接触角度 (θc) 进一步提高了结合的可靠性.
- 表面预处理策略应专注于最大限度地提高纳米尺度的不规则性和可湿性,以改善牙修复的寿命.
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