Degree of cure of orthodontic composite attachments underneath aligners

IF 1.8 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

European Journal of Oral Sciences Pub Date : 2023-12-01 DOI:10.1111/eos.12963

Sandrine Janine Lasance, Despina Koletsi, George Eliades, Theodore Eliades

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引用次数: 0

Abstract

The aim of this study was to assess the percentage degree of cure (DC%) of 2-mm-thick resin composite attachments used for aligner treatment. Three types of aligner – two thermoformed aligners (Clear Aligner [CLA], polyethylene terephthalate glycol modified; and Invisalign [INV], polyester urethane) and a three-dimensional-printed aligner (Graphy TC-85DAC [GRP], an acrylate-methacrylate copolymer) – were selected, along with two universal resin composites (3M Filtek Universal [FTU] and Charisma Topaz ONE [CTO]). Samples of each composite were placed under each aligner, and the degree of cure of each composite was evaluated on the top (facing the aligner) and the bottom (facing the substrate) attachment surfaces after curing. Five specimens were used per combination of aligner and composite, and an additional group of composites irradiated without aligners served as the control. The DC% measurements were performed using attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. The DC% across the aligners were (median values) 33.8%–44.8% for CLA, 33.6%–40.8% for INV, 32.8%–40.6% for GRP, and 40.0%–51.7% for the control group. The DC% values of the attachments cured under any aligner were significantly lower than that of the corresponding control, with the values recorded on the top surfaces being 6% higher than those on the bottom surfaces after adjusting for aligner group and composite type.

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正畸矫正器下复合附着体的治愈程度。

本研究的目的是评估用于矫直器治疗的2mm厚树脂复合附着体的治愈百分率(DC%)。三种矫形剂——两种热成型矫形剂(透明矫形剂[CLA]，聚对苯二甲酸乙二醇酯改性;选择了Invisalign [INV]，聚酯聚氨酯)和三维打印校准器(graphtc - 85dac [GRP]，丙烯酸酯-甲基丙烯酸酯共聚物)，以及两种通用树脂复合材料(3M Filtek universal [FTU]和Charisma Topaz ONE [CTO])。将每种复合材料的样品放置在每个对准器下，并在固化后的顶部(面向对准器)和底部(面向基材)附着面上评估每种复合材料的固化程度。每个组合使用5个标本对准器和复合材料，另外一组复合材料辐照没有对准器作为对照。使用衰减全反射傅立叶变换红外光谱(ATR-FTIR)测量DC%。CLA组的DC%为33.8% ~ 44.8%，INV组为33.6% ~ 40.8%，GRP组为32.8% ~ 40.6%，对照组为40.0% ~ 51.7%。调整矫直器组和复合矫直器后，任一矫直器固化附着体的DC%值均显著低于相应的对照，其上表面记录的DC%值比下表面记录的DC%值高6%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

European Journal of Oral Sciences 医学-牙科与口腔外科

CiteScore

3.50

自引率

5.30%

发文量

审稿时长

2 months

期刊介绍： The European Journal of Oral Sciences is an international journal which publishes original research papers within clinical dentistry, on all basic science aspects of structure, chemistry, developmental biology, physiology and pathology of relevant tissues, as well as on microbiology, biomaterials and the behavioural sciences as they relate to dentistry. In general, analytical studies are preferred to descriptive ones. Reviews, Short Communications and Letters to the Editor will also be considered for publication. The journal is published bimonthly.