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首页> 外文期刊>American journal of dentistry >Effects of toothpaste containing surface pre-reacted glass-ionomer (S-PRG) filler on crystallinity and acid resistance of hydroxyapatite
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Effects of toothpaste containing surface pre-reacted glass-ionomer (S-PRG) filler on crystallinity and acid resistance of hydroxyapatite

机译：牙膏表面预反应玻璃离聚物（S-PRG）填料对羟基磷灰石结晶度和耐酸性的影响

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摘要

Purpose: To examine the acid resistance of experimental toothpaste containing different wt% of surface pre-reacted glass-ionomer (S-PRG) filler. Methods: Hydroxyapatite (HAP) pellets were treated with toothpaste containing 0, 1, 5, 10, 20, or 30 wt% S-PRG filler for 5 minutes. A demineralization and remineralization cycle were repeated for 7 days. The demineralized depths of the pellets were measured using a surface roughness analyzer. The crystallinity of both HAP and dicalcium phosphate dehydrate (DCPD) after the S-PRG treatment was measured by a powder X-ray diffraction (XRD) analysis. Fluoride gel (9,000 ppmF) was used for comparison. Results: The demineralizd depth decreased with increases in the S-PRG filler concentration. The demineralized depth with the 30 wt% S-PRG treatment (4.6 mu m +/- 2.0) was slightly greater than that with the fluoride gel (3.3 mu m +/- 0.5), but not significantly different (P< 0.05). However, significant differences were observed in demineralized depths between the fluoride gel and the other wt% of S-PRG tested (P< 0.05). In the XRD analysis, no crystallinity changes were noted in HAP or DCPD after the S-PRG or fluoride gel treatments. The formation of calcium fluoride was not detected in any treatment group.
机译：目的：检查含有不同WT％的表面预反应玻璃离聚物（S-PRG）填料的实验牙膏的耐酸性。方法：用含0,1,5,10,20或30wt％S-PRG填料的牙膏处理羟基磷灰石（HAP）粒料5分钟。重复脱矿质和再矿化循环7天。使用表面粗糙度分析仪测量颗粒的脱矿化深度。通过粉末X射线衍射（XRD）分析测量S-PRG处理后的HAP和二钙脱水（DCPD）的结晶度。氟化物凝胶（9,000ppmF）用于比较。结果：Demineralizd深度随着S-PRG填充浓度的增加而降低。具有30wt％S-PRG处理（4.6μm+/- 2.0）的脱矿质深度略大于氟化物凝胶（3.3μm+/- 0.5），但不显着不同（P <0.05）。然而，在氟化物凝胶与S-PRG的其他WT％的氟化物凝胶之间观察到显着的差异（P <0.05）。在XRD分析中，在S-PRG或氟化物凝胶处理之后，在HAP或DCPD中没有结晶度变化。在任何处理组中未检测到氟化钙的形成。

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  • 来源
    《American journal of dentistry》 |2020年第4期|共4页
  • 作者

    Suge Toshiyuki; Matsuo Takashi;

  • 作者单位

    Tokushima Univ Grad Sch Inst Biomed Sci Dept Conservat Dent 3-18-15 Kuramoto Tokushima 7708504;

    Tokushima Univ Grad Sch Inst Biomed Sci Dept Conservat Dent 3-18-15 Kuramoto Tokushima 7708504;

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  • 正文语种 eng
  • 中图分类 口腔科学;
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