Mechanical properties of different types of composite resin used as clear aligner attachments: an in vitro study.

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Saudi Dental Journal Pub Date : 2025-06-02 DOI:10.1007/s44445-025-00016-z

Rana R Alshammari, Nada Alshihah, Aljazi Aldweesh

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引用次数: 0

Abstract

Composite resin is often used as an orthodontic attachment due to its esthetic appearance, ease of clinical manipulation, and micromechanical bonding to etched enamel tooth structures. The aim of this study was to compare the Vickers microhardness (VMH) and shear bond strength (SBS) of six types of composite resins (Tetric PowerFlow, Filtek™ Supreme Flowable Restorative, Clearfil Majesty Flow, Tetric PowerFill, Filtek™ Supreme XTE Universal, and Estelite Sigma Quick). Twelve composite resin discs were fabricated for VMH test for each composite group. And 15 rectangular composite resin attachments were bonded on natural extracted premolars for each SBS test. VMH values were retrieved using an INOVATEST microhardness device at T1 and T2 after thermocycling and toothbrushing intervention. SBS values were retrieved using a Universal Testing Machine after thermocycling aging. The VMH values of all materials showed statistically significant differences (p = < .01) between T1 and T2, as Clearfil Majesty Flow material did not show a significant difference and Filtek™ Supreme XTE Universal material showed a significant difference at (p = < .05) but not at (p = < .01). ANOVA revealed no statistically significant difference in the SBS values between the six composite resin materials. The Clearfil Majesty Flow composite resin was not affected by thermocycling or toothbrushing compared to all other composite groups.

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不同类型复合树脂用作透明对准器附着物的机械性能：体外研究。

复合树脂由于其美观的外观，易于临床操作，以及与蚀刻牙釉质牙齿结构的微机械结合而经常被用作正畸附着物。本研究的目的是比较六种复合树脂（Tetric PowerFlow、Filtek™Supreme Flowable Restorative、Clearfil Majesty Flow、Tetric PowerFill、Filtek™Supreme XTE Universal和Estelite Sigma Quick）的维氏显微硬度（VMH）和剪切粘接强度（SBS）。每个复合材料组制作12个复合树脂盘进行VMH试验。每次SBS试验用15个矩形复合树脂附着体粘接在天然提取的前磨牙上。在热循环和刷牙干预后的T1和T2，使用innovatest显微硬度仪检索VMH值。SBS值在热循环老化后使用万能试验机检索。各材料的VMH值差异有统计学意义(p =

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来源期刊

Saudi Dental Journal DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

22 weeks

期刊介绍： Saudi Dental Journal is an English language, peer-reviewed scholarly publication in the area of dentistry. Saudi Dental Journal publishes original research and reviews on, but not limited to: • dental disease • clinical trials • dental equipment • new and experimental techniques • epidemiology and oral health • restorative dentistry • periodontology • endodontology • prosthodontics • paediatric dentistry • orthodontics and dental education Saudi Dental Journal is the official publication of the Saudi Dental Society and is published by King Saud University in collaboration with Elsevier and is edited by an international group of eminent researchers.