Effect of whitening dentifrices on dental enamel: an analysis of color, microhardness, and surface roughness in vitro.

IF 1.3 4区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Quintessence international Pub Date : 2024-09-27 DOI:10.3290/j.qi.b5517931

Sabrina Barth de Andrade Luz, Rayrane Iris Melo da Cunha Oliveira, Letícia Alvares Leite Guanabara, Beatriz Barros Viana, Rebeca Tibau Aguiar Dias, André Ulisses Dantas Batista, Marília Regalado Galvão Rabelo Caldas, Diana Ferreira Gadelha de Araújo

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Abstract

Objectives: This study aimed to evaluate the influence of different whitening toothpastes on color change and alteration in enamel surface roughness and microhardness compared to a conventional toothpaste.

Method and materials: Fifty bovine incisors were selected, cleaned, and stored before being divided into five groups: a conventional toothpaste group and three whitening toothpaste groups containing different abrasive agents: silica, hydrogen peroxide, and activated charcoal. Specimens underwent simulated brushing, staining with black tea solution, and subsequent analyses of color, surface roughness, and microhardness. Statistical analysis was performed using three-way ANOVA and Tukey post-hoc tests (P .05).

Results: The results showed that the color analysis revealed similar whitening potential among all toothpastes. They showed significant differences in surface roughness (P .001) and microhardness (P .001) after simulated brushing. While all toothpastes caused a decrease in microhardness, the charcoal-based toothpaste showed a significant increase in surface roughness compared to the initial condition.

Conclusion: All toothpastes demonstrated whitening capability. Surface roughness changed after brushing with activated charcoal-based whitening toothpaste, but final roughness was similar across all groups. Whitening toothpastes led to a decrease in enamel microhardness, with similar final performance across all toothpastes analyzed.

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美白牙膏对牙釉质的影响：体外颜色、微硬度和表面粗糙度分析。

研究目的本研究旨在评估与传统牙膏相比，不同美白牙膏对颜色变化以及珐琅质表面粗糙度和微硬度变化的影响：选取 50 颗牛门牙，清洗并保存，然后将其分为五组：传统牙膏组（C）和三组含有不同研磨剂的美白牙膏组：二氧化硅（S）、过氧化氢（PH）和活性炭（CA）。样本经过模拟刷牙、红茶溶液染色以及随后的颜色、表面粗糙度和微硬度分析。统计分析采用三方方差分析和 Tukey 事后检验（P < .05）：结果表明，颜色分析表明所有牙膏的美白潜力相似。但模拟刷牙后，牙膏的表面粗糙度（P < .001）和微硬度（P < .001）有明显差异。虽然所有牙膏都会导致显微硬度下降，但与初始状态相比，木炭牙膏的表面粗糙度明显增加：结论：所有牙膏都具有美白功效。使用活性炭美白牙膏刷牙后，牙齿表面的粗糙度发生了变化，但各组的最终粗糙度相似。美白牙膏会导致珐琅质微硬度下降，所有分析牙膏的最终性能相似。

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来源期刊

Quintessence international 医学-牙科与口腔外科

CiteScore

3.30

自引率

5.30%

发文量

审稿时长

1 months

期刊介绍： QI has a new contemporary design but continues its time-honored tradition of serving the needs of the general practitioner with clinically relevant articles that are scientifically based. Dr Eli Eliav and his editorial board are dedicated to practitioners worldwide through the presentation of high-level research, useful clinical procedures, and educational short case reports and clinical notes. Rigorous but timely manuscript review is the first order of business in their quest to publish a high-quality selection of articles in the multiple specialties and disciplines that encompass dentistry.