Bonding Strength of Orthodontic Brackets on Porcelain Surfaces Etched by Er:YAG Laser.

Q2 Medicine
Photomedicine and laser surgery Pub Date : 2018-11-01 Epub Date: 2018-09-18 DOI:10.1089/pho.2017.4429
Zhuojun Xu, Jing Li, Xiaochuan Fan, Xiaofeng Huang
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引用次数: 8

Abstract

Objective: To evaluate the effect of erbium: yttrium aluminium garnet laser conditioning bond strength of orthodontic brackets on porcelain surfaces.

Background: There are few studies that evaluate the effect of Er:YAG laser about orthodontic bonding on porcelain surface. The efficacy of Er:YAG laser in porcelain conditioning is controversial.

Materials and methods: Ninety ceramic specimens were randomly divided into five group, group A: etched with hydrofluoric (HF) acid; group B and C: etched with an energy parameter of 250 mJ, 20 Hz and 300 mJ, 20 Hz by Er:YAG laser instrument; group D and E: etched with an energy parameter of 250 mJ, 20 Hz and 300 mJ, 20 Hz of Er:YAG laser with HF etching. Afterward, two samples selected randomly from each group were evaluated by scanning electron microscopy. Brackets were bonded on the remaining samples, which were stored in distilled water and thermocycled. Each group was measured by shear bond strength (SBS), tensile bond strength (TBS), porcelain fracture index (PFI), and adhesive remnant index (ARI) calculation. Data were statistically analyzed using SPSS software.

Results: The SBS and TBS in group E were the largest. Comparing SBS and TBS of HF group and other Er:YAG laser group, there were statistically significant difference (p < 0.05). PFI was significantly higher in shear force group than the tensile force group. HF group had higher ARI score than the other groups.

Conclusions: Porcelain surfaces etched by 250 mJ, 20 Hz of Er:YAG laser combined with HF acid can get enough bond strength and have lower porcelain fracture rate for orthodontic bracket bonding.

Er:YAG激光蚀刻瓷表面正畸托槽的结合强度。
目的:评价铒钇铝石榴石激光调理正畸托槽瓷面粘结强度的效果。背景:目前关于Er:YAG激光在烤瓷表面正畸粘接效果的研究较少。Er:YAG激光在瓷器调理中的效果存在争议。材料与方法:90个陶瓷试样随机分为5组:A组:氢氟酸蚀刻;B组和C组:Er:YAG激光仪以250 mJ, 20 Hz和300 mJ, 20 Hz的能量参数蚀刻;D组和E组:用能量参数为250 mJ, 20 Hz和300 mJ, 20 Hz的Er:YAG激光进行HF刻蚀。随后,从每组中随机抽取2个样本进行扫描电镜观察。将剩余的样品粘接在托架上,这些样品储存在蒸馏水中并进行热循环。各组采用剪切结合强度(SBS)、拉伸结合强度(TBS)、瓷体断裂指数(PFI)、粘接剂残留指数(ARI)计算。数据采用SPSS软件进行统计分析。结果:E组的SBS和TBS最大。HF组与其他Er:YAG激光组SBS、TBS比较,差异有统计学意义(p)。结论:250 mJ、20 Hz Er:YAG激光联合HF酸刻蚀瓷面,可以获得足够的结合强度,瓷体断裂率较低,用于正畸托架的结合。
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
CiteScore
4.50
自引率
0.00%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Photobiomodulation, Photomedicine, and Laser Surgery (formerly Photomedicine and Laser Surgery) is the essential journal for cutting-edge advances and research in phototherapy, low-level laser therapy (LLLT), and laser medicine and surgery. The Journal delivers basic and clinical findings and procedures to improve the knowledge and application of these techniques in medicine.
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