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首页> 外文期刊>Odontology >Surface substance loss of subsurface bovine enamel lesions after different steps of the resinous infiltration technique: a 3D topography analysis
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Surface substance loss of subsurface bovine enamel lesions after different steps of the resinous infiltration technique: a 3D topography analysis

机译：在树脂渗透技术的不同步骤后，表面下牛牙釉质病变的表面物质损失：3D地形分析

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摘要

Surface substance loss of subsurface enamel lesions before (baseline/demineralization) and after each step of the infiltration technique was evaluated by means of a three-dimensional focus variation. Eighty enamel specimens were prepared and partially varnished (control). Non-varnished areas were demineralized (pH 4.95; 28 days), and etched with phosphoric acid gel (20%; 5 s). Specimens were randomly assigned to eight groups (n = 10), and were infiltrated using four resinous materials. In subgroups 1, polymerization and finishing with abrasive polishing strips followed. In subgroups 2, excess material was removed before polymerization (E1/E2-Excite, Vivadent; F1/F2-Fortify, Bisco; G1/G2-Glaze & Bond, DMG; I1/I2-Icon, DMG). Topometrical evaluation revealed a negligible substance loss of demineralized enamel. After etching, mean (±SD) differences of height decreased uniformly (−6.6 ± 2.0 μm; p = 0.089; ANOVA). For infiltrated lesions, DH of subgroups 1 was comparable to the etched lesions, with a significant increase (compared to etched lesions) in subgroups 2 (1.1 ± 0.1 μm; p 0.001; t test). Within the limitations of this study, it is concluded that etching of initial subsurface lesions will result in significant surface substance loss; removal of excess material before light-curing should simplify the infiltration procedure, and this will avoid any abrasion resulting from polishing procedures.
机译：通过三维聚焦变化评估在浸润技术的每个步骤之前（基线/去矿质化）和之后的地下釉质病变的表面物质损失。制备了80个搪瓷样品并进行了部分清漆（对照）。使未上漆的区域脱盐（pH 4.95； 28天），并用磷酸凝胶蚀刻（20％； 5 s）。将标本随机分为8组（n = 10），并用4种树脂材料浸润。在子组1中，进行聚合并用磨料抛光条进行精加工。在子组2中，在聚合之前除去了多余的材料（E1 / E2-Excite，Vivadent； F1 / F2-Fortify，Bisco； G1 / G2-Glaze＆Bond，DMG； I1 / I2-Icon，DMG）。拓扑学评估显示，软化釉质的物质损失可忽略不计。蚀刻后，高度的平均（±SD）差异均匀降低（-6.6±2.0μm； p = 0.089； ANOVA）。对于浸润性病变，第1组的DH与蚀刻后的病变相当，在第2组中显着增加（与蚀刻的病变相比）（1.1±0.1μm； p <0.001； t检验）。在本研究的范围内，得出的结论是，蚀刻最初的表面下的病变将导致大量的表面物质流失。在光固化之前去除多余的材料应简化渗透过程，这将避免抛光过程造成的任何磨损。

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  • 来源
    《Odontology》 |2012年第2期|p.172-180|共9页
  • 作者

    Fan Yang; Jan Mueller; Andrej M. Kielbassa;

  • 作者单位

    Department of Operative Dentistry and Periodontology, University School of Dental Medicine, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany;

    Department of Operative Dentistry and Periodontology, University School of Dental Medicine, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany;

    Department of Operative Dentistry and Periodontology, University School of Dental Medicine, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany;

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  • 正文语种 eng
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  • 关键词

    Focus variation; Infiltration; Initial caries; Polishing procedures; Substance loss;

    机译：焦点变化;渗透;初期龋齿;抛光程序;物质流失;

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