正畸脱粘后用不同毛刺去除树脂会影响过氧化氢扩散、漂白效果和牙齿漂白过程中的牙釉质改变吗？体外研究

IF 1.9 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

International Orthodontics Pub Date : 2025-09-25 DOI:10.1016/j.ortho.2025.101060

Byron Carpio-Salvatierra , Mayra Alejandra Nuñez Aldaz , Deisy Cristina Ferreira Cordeiro , Michael Willian Favoreto , Maria José Burbano-Balseca , Paulo Vitor Farago , Alessandro D. Loguercio

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引用次数: 0

摘要

目的评价正畸脱粘后不同牙刺去除残余树脂对牙髓腔内过氧化氢浓度、牙釉质漂白效果及牙釉质表面物理变化的影响。材料与方法将60颗完成托槽安装和脱粘的前磨牙随机分为5组（n = 12）：不漂白组（对照组）、只漂白组（对照组）、硬质合金+漂白组（CB组）、金刚石FF +漂白组（DB组）和氧化锆+漂白组（ZB组）。除对照组外，其余各组均进行漂白（H2O2 35%）。用紫外-可见分光光度计测定牙髓腔中H2O2浓度（μg/mL）。漂白效果通过数字分光光度计（ΔEab， ΔE00和WID）在漂白前和7天后进行评估。用FE-SEM分析牙釉质表面变化。所有数据进行统计学分析（α = 0.05）。结果与单纯漂白组相比，CB和ZB树脂去除组正畸脱胶后H2O2浓度较低（P < 0.02）。与仅漂白组相比，经过不同刺痛处理组的漂白效果在评估参数上无显著差异（P > 0.05）。结论使用CB和ZB毛刺去除残留树脂正畸后脱粘，可降低H2O2浓度。然而，漂白效果不受bur类型的影响。值得注意的是，ZB毛刺提供了优越的牙釉质表面保存。

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Does resin removal with different burs after orthodontic debonding influence hydrogen peroxide diffusion, bleaching efficacy, and enamel alterations during tooth bleaching? An in-vitro study

Objectives

To evaluate the influence of different burs for residual resin removal after orthodontic debonding on hydrogen peroxide (H₂O₂) concentration into the pulp chamber, bleaching efficacy and physical changes on the enamel surface following in-office tooth bleaching.

Material and methods

Sixty premolars subjected to bracket installation and debonding were randomized into five groups (n = 12): no bleaching (control), only bleaching, Carbide bur + bleaching (CB), Diamond FF bur + bleaching (DB) and Zirconia bur + bleaching (ZB). All groups, except the control, received bleaching (H₂O₂ 35%). The H₂O₂ concentration (μg/mL) in the pulp chamber was measured using a UV-Vis spectrophotometer. Bleaching efficacy was assessed by a digital spectrophotometer (ΔE_ab, ΔE₀₀, and WI_D) before and after 7 days of bleaching. Enamel surface alterations were analysed by FE-SEM. All data were submitted to statistical analysis (α = 0.05).

Results

The groups submitted to resin removal with CB and ZB post-orthodontic debonding showed a lower H₂O₂ concentration when compared to the Only Bleaching group after bleaching procedure (P < 0.02). No significant differences were observed in bleaching efficacy between groups submitted to different burs when compared to the Only bleaching group (P > 0.05) across evaluated parameters.

Conclusions

The use of CB and ZB burs to remove residual resin post-orthodontic debonding results in lower H₂O₂ concentration. However, bleaching efficacy was unaffected by bur type. Notably, ZB burs provided superior enamel surface preservation.

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来源期刊

International Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.50

自引率

13.30%

发文量

审稿时长

26 days

期刊介绍： Une revue de référence dans le domaine de orthodontie et des disciplines frontières Your reference in dentofacial orthopedics International Orthodontics adresse aux orthodontistes, aux dentistes, aux stomatologistes, aux chirurgiens maxillo-faciaux et aux plasticiens de la face, ainsi quà leurs assistant(e)s. International Orthodontics is addressed to orthodontists, dentists, stomatologists, maxillofacial surgeons and facial plastic surgeons, as well as their assistants.