臭氧气体治疗牙齿漂白可以保持牙釉质的显微硬度、粗糙度和表面微细度。

Rafael R Carvalho, Natália R Carlos, Francisco Uf de Campos, Cecilia P Turssi, Waldemir F Vieira Júnior, Flávia Lb do Amaral, Roberta T Basting
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引用次数: 0

摘要

在臭氧漂白治疗后,评估牙釉质表面特性是很重要的,以确保漂白为良好的牙基提供足够的条件。目的:本体外研究的目的是评价10%过氧化脲(CP)漂白处理对牙釉质表面的显微硬度、粗糙度和微观形貌的影响。材料和方法:将牛牙釉质块铺成平面,分为3个漂白处理组(n=10): CP -每天1小时/14天(乳白色PF 10%/ Ultradent);O -每天1小时,每3天/3个疗程(Medplus V Philozon, 60 mcg/mL,氧流量1 L/min); OCP - CP,每天1小时,每3天/3个疗程。采用扫描电镜(5000倍放大)测定处理前后牙釉质表面显微硬度(Knoop)、粗糙度(Ra)和显微形貌。结果:方差分析和Tukey-Kramer 's检验显示,O和OCP处理后牙釉质显微硬度没有变化(p=0.0087),而CP处理后牙釉质显微硬度降低(p=0.0169)。随时间重复测量的广义线性混合模型表明,cp治疗比OCP或O治疗更能增加牙釉质粗糙度(p=0.0003)。CP美白处理后牙釉质微形态有轻微的不规则性。与传统的托盘CP漂白处理相比,使用或不使用CP,保持了微硬度和牙釉质表面微观形貌的机械和物理特性,并保持或降低了表面粗糙度。结论:在牙盘中使用10%过氧化脲处理比使用臭氧和10%臭氧过氧化脲处理对牙釉质表面性能的影响更大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.

Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.

Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.

Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.

After ozone therapy for bleaching, it is important to evaluate enamel surface properties, to ensure that bleaching provides adequate conditions for sound dental substrate. Aim: The aim of this in vitro study was to evaluate the effects of a bleaching treatment with 10% carbamide peroxide (CP), with or without ozone (O), on the microhardness, roughness and micromorphology of the enamel surface.

Materials and method: Bovine enamel blocks were planed and distributed among the following three bleaching treatment groups (n=10): CP - 1 hour per day/14 days (Opalescence PF 10%/ Ultradent); O - 1 hour per day every 3 days/3 sessions (Medplus V Philozon, 60 mcg/mL and oxygen flow rate of 1 L/min); and OCP - CP with O, 1 hour per day every 3 days/3 sessions. Enamel surface microhardness (Knoop), roughness (Ra), and micromorphology by scanning electron microscopy (5,000x magnification) were determined before and after the treatments.

Results: ANOVA and Tukey-Kramer’s test showed that enamel microhardness remained unchanged by treatment with O and OCP (p=0.0087), but decreased by treatment with CP. Treatment with O promoted higher enamel microhardness than the other groups (p=0.0169). Generalized linear mixed models for repeated measures over time indicated treatment with CP increased enamel roughness more than OCP or O (p=0.0003). CP produced slight irregularities in enamel micromorphology after the whitening treatment. O, with or without CP, maintained the mechanical and physical properties of microhardness and enamel surface micromorphology, and either maintained or reduced surface roughness, compared to the conventional tray-delivered CP bleaching treatment.

Conclusions: Treatment with 10% carbamide peroxide in trays promoted greater changes in enamel surface properties than treatments with ozone and with 10% ozonized carbamide peroxide in the office.

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