Reinforcement mechanism of dentin mechanical properties by intracanal medicaments.
Reinforcement mechanism of dentin mechanical properties by intracanal medicaments.
复制标题
根管内药物增强牙本质力学性能的机制。
DOI：
10.4012/dmj.18.304
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发表时间：
1999
影响因子：
2.5
通讯作者：
Fumio Nishimura
中科院分区：
文献类型：
--
作者：
Fumio Nakano;Hidekazu Takahashi;Fumio Nishimura
探讨根管内药物增强牙本质力学性能的机制。哑铃形标本由胶原蛋白片、脱矿牙本质和有机溶解牙本质制备。将样本浸入根管内药物（丁香酚和甲醛甲酚）后，在37 ℃水中进行拉伸试验，并进行维氏硬度试验。丁香酚和甲醛甲酚浸泡后，牙本质的抗张强度增加，尤其是胶原和有机溶解牙本质和脱矿牙本质。因此，甲醛甲酚浸泡可能通过蛋白质凝固增强牙本质拉伸强度，而丁香酚浸泡可能不仅通过蛋白质凝固而且通过与羟基磷灰石螯合来增强牙本质拉伸强度。然而，根管内药物浸泡后硬度值没有显著变化。
The reinforcement mechanism of dentin mechanical properties by intracanal medicaments was investigated. The dumbbell-shaped specimens were prepared from a collagen sheet, demineralized dentin and organic dissolved dentin. After immersing the specimens in intracanal medicaments (eugenol and formocresol), the tensile test was carried out in 37 degrees C water and the Vickers hardness test was performed. The tensile strengths increased after eugenol and formocresol immersion, especially collagen and organic dissolved dentin after formocresol immersion and demineralized dentin after eugenol immersion. Thus, formocresol immersion might have reinforced the dentin tensile strength by protein coagulation, while eugenol immersion might have reinforced the dentin tensile strength by not only protein coagulation but also chelation with hydroxyapatite. However, the hardness values did not significantly change after intracanal medicament immersion.
通过含有氟硅酸盐和一水合磷酸一钙的酸性凝胶，将松散结合和牢固结合的氟化物沉积在牙釉质上。
影响因子：
4.2
作者：
Takagi,S;Chow,LC;Sieck,BA
通讯作者：
Sieck,BA