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首页> 外文期刊>Photodiagnosis and Photodynamic Therapy >The effects of hybrid light activation and enamel acid etching on the effectiveness, stability and sensitivity after a single session in-office bleaching: A 12-month clinical trial
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The effects of hybrid light activation and enamel acid etching on the effectiveness, stability and sensitivity after a single session in-office bleaching: A 12-month clinical trial

机译：单次办公室内漂白后混合光活化和搪瓷酸蚀刻对有效性，稳定性和敏感性的影响：一项为期12个月的临床试验

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Background: The use of hybrid-light (HL) during in-office teeth bleaching can provide faster and reliable results after a single bleaching session, especially if associated with previous acid etching. The present in vivo, interventional, split-mouth, triple-blinded and randomized study evaluated the efficiency of a HL, with and without prior enamel acid etching, assessing the gel application time, degree of color change, sensitivity and treatment stability up to 12 months.Methods: Thirty-four patients were selected and randomly divided into four groups. The color was evaluated using a spectrophotometer with the CIELab color system, and a VAS questionnaire was used to evaluate the sensitivity. Both upper and lower hemiarches (GI and III) received enamel acid etching with 37% phosphoric acid for 15 s prior to the application of 35% hydrogen peroxide gel (HP). For GI and II, HP was applied on both dental arches for 3-4 consecutive applications and activated by HL (2 x 3' activations with 1' interval); and 3 x 15' (HP) for GIII and IV without HL. Patients returned in 24 h, 1 week, 1-, 6- and 12-months intervals. The clinical operator was different from the clinical measurements operator.Results: After 3-way ANOVA, Tukey's, Wilcoxon and Mann-Whitney tests, all with p 0.05, no statistical differences were observed between the groups regarding color change (Delta E) and sensitivity in all evaluations. The lowest gel application time was observed for GII (acid etch + HL), followed by GI (HL).Conclusions: The present study's results reveal the advantages of HL associated with acid etching prior to in office bleaching.
机译：背景：在办公室内牙齿漂白过程中使用混合光（HL）可以在一次漂白后提供更快，更可靠的结果，尤其是与先前的酸蚀有关时。目前的体内，介入，双嘴，三盲和随机研究评估了在不使用搪瓷酸蚀刻的情况下和不进行珐琅酸蚀刻的情况下HL的效率，评估了凝胶涂装时间，变色程度，敏感性和治疗稳定性，最高可达12方法：选择34例患者，随机分为四组。使用带有CIELab颜色系统的分光光度计评估颜色，并使用VAS调查表评估灵敏度。上半部和下半部（GI和III）在使用35％的过氧化氢凝胶（HP）之前，都要用37％的磷酸进行搪瓷酸蚀刻15 s。对于GI和II，HP在两个牙弓上连续涂刷3-4次，并由HL激活（2 x 3'激活，间隔1'）；对于没有HL的GIII和IV，则为3 x 15'（HP）。患者每隔24小时，1周，1、6和12个月返回一次。结果：经过三向ANOVA，Tukey's，Wilcoxon和Mann-Whitney测试，p <0.05，两组之间在颜色变化（Delta E）和所有评估的敏感性。对于GII（酸蚀+ HL），其次是GI（HL），凝胶涂覆时间最短。结论：本研究结果揭示了在办公室漂白之前，HL与酸蚀相关的优势。

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