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首页> 外文学位 >Effect of Double Layer Technique on Hydrogen Peroxide Penetration and Tooth Whitening Efficacy.
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Effect of Double Layer Technique on Hydrogen Peroxide Penetration and Tooth Whitening Efficacy.

机译：双层技术对过氧化氢渗透和牙齿增白功效的影响。

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摘要

Objectives: To measure the level of hydrogen peroxide penetration into the pulp chamber and to evaluate its whitening efficacy when the tooth is treated with an innovative double layer of potassium nitrate desensitizing agent and hydrogen peroxide whitening gel.;Methods: Extracted human molar teeth (n=160) were collected. Roots were trimmed 3 mm apical to the cemento-enamel junction, the pulp was removed and a cavity prepared, leaving a standardized wall of 2 mm thickness, which retained 100 microL of acetate buffer solution. A standardized whitening area of 6 mm in diameter was established buccally by painting the rest of the tooth with gray nail varnish. The teeth were randomly assigned into four groups. Group 1: no treatment (glycerin gel, negative control); Group 2: double layer of 20 muL 5% potassium nitrate (Relief ACP, Philips Oral Healthcare) and 100 muL 25% hydrogen peroxide (Zoom Chairside Whitening Gel, Philips Oral Healthcare); Group 3: double layer of 40 muL 5% potassium nitrate and 100 muL 25% hydrogen peroxide; and Group 4: 100 muL 25% hydrogen peroxide (positive control). All groups received three 45-minute sessions of in-office whitening with light activation at 3-day intervals. Hydrogen peroxide penetration was assessed spectrophotometrically using leucocrystal violet and horseradish peroxidase. Color measurements were assessed with VITA Easyshade at baseline, 1-day, and 1-month post-whitening. Tooth color change was measured per Commission Internationale de l'Eclairage methodology. One-way ANOVA with Tukey multiple comparisons adjustment was performed to compare group differences in overall tooth color change (DeltaE*) and hydrogen peroxide penetration (type I error = 0.05).;Results: Hydrogen peroxide penetration levels were not significantly different between Group 2 and Group 4; however, the levels were significantly higher than Group 1 and Group 3 (p<0.0001). Groups 2, 3 and 4 showed no differences for overall tooth color change but differed significantly from the negative control group (Group 1) at 1-day and 1-month post-whitening.;Conclusions: Hydrogen peroxide penetration was affected when pretreated by potassium nitrate desensitizer; however, the double layer technique did not adversely affect the whitening efficacy.
机译：目的：测量用创新的硝酸钾脱敏剂和过氧化氢美白凝胶处理牙齿时过氧化氢渗透到牙髓腔中的水平，并评估其增白功效。 = 160）。将根修剪至牙釉质-牙釉质接合处的顶端3 mm，取出牙髓并准备腔体，留下2 mm厚度的标准壁，保留100μL乙酸盐缓冲溶液。通过用灰色指甲油涂刷牙齿的其余部分，在颊部建立直径为6毫米的标准美白区域。牙齿被随机分为四组。第1组：不治疗（甘油凝胶，阴性对照）；第2组：双层20μL5％硝酸钾（Relief ACP，Philips Oral Healthcare）和100μL25％过氧化氢（Zoom Chairside Whitening Gel，Philips Oral Healthcare）；第3组：双层40μL5％硝酸钾和100μL25％过氧化氢；第4组：100μL25％过氧化氢（阳性对照）。所有组在3天的间隔内进行了3次45分钟的办公室内增白，并进行了光激活。使用无色结晶紫和辣根过氧化物酶通过分光光度法评估过氧化氢的渗透。使用VITA Easyshade在基准线，增白后1天和1个月评估颜色测量。牙齿颜色的变化是按照国际照明委员会的方法进行测量的。进行了单向方差分析和Tukey多重比较调整，以比较各组在总体牙齿颜色变化（DeltaE *）和过氧化氢渗透方面的差异（I型误差= 0.05）。；结果：第2组之间的过氧化氢渗透水平没有显着差异和第4组；但是，该水平显着高于第1组和第3组（p <0.0001）。第2、3和4组在增白后1天和1个月时牙齿的整体颜色变化无差异，但与阴性对照组（第1组）有显着差异。；结论：用钾预处理会影响过氧化氢的渗透硝酸盐脱敏剂；但是，双层技术并没有负面影响美白功效。

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  • 作者

    Ariyakriangkai, Watcharaphong.;

  • 作者单位

    The University of Iowa.;

  • 授予单位 The University of Iowa.;
  • 学科 Dentistry.
  • 学位 M.S.
  • 年度 2017
  • 页码 140 p.
  • 总页数 140
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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