An in vitro study of orthodontic brackets bonded to transition dental zirconia: Shear bond strength, adhesive remnant index, and surface irregularities

IF 1.8 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

International Orthodontics Pub Date : 2024-11-07 DOI:10.1016/j.ortho.2024.100940

Gabrielle Roberts , Xiaoming Xu , Edwin Kee , Andrew Chapple , Virgil Bartels , Paul Armbruster , Richard Ballard

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Abstract

Purpose

Orthodontic treatment often involves bonding brackets to teeth, and the protocols for natural enamel differ from those for prosthodontically restored teeth. With the rising number of adult orthodontic patients, many present with zirconia crowns. This study aimed to evaluate the shear bond strength (SBS) of ceramic orthodontic brackets bonded to transition dental zirconia, which combines 3Y-TZP and 5Y-TZP powders.

Methods

Ninety zirconia substrates were divided into three groups (n = 30) based on transition zirconia brands (3M ESPE Lava™ Plus, Cercon® ht ML, and Katana™ Zirconia UTML) and bonded with ceramic brackets (CHIC Ceramic Roth Maxillary and Symetri Clear) using 3M™ Transbond™ XT. A control group used traditional zirconia and metal brackets. Surface treatments included 50-micron aluminium oxide abrasion and Z-Prime™ Plus application. SBS was tested post-thermocycling. Adhesive Resin Index (ARI) was scored and surface roughness was evaluated pre- and post-bonding.

Results

Group 1 (3M ESPE Lava™ Plus with CHIC Ceramic Roth Maxillary brackets) had a significantly lower SBS (mean 13.27 MPa) compared to the other groups, which all had SBS values above 18.80 MPa (P ≤ .023). Group 2 (3M ESPE Lava™ Plus with Symetri™ Clear) demonstrated a significantly higher mean ARI compared to the control group (Cercon® XT with Victory Series™ Roth), (P = .027). Additionally, significant changes in surface roughness were observed in Groups B (Cercon® ht ML) (P = .008) and C (Katana™ Zirconia UTML) (P = .016).

Conclusion

This study determined that the shear bond strength of various transitional zirconia substrates with ceramic brackets exceeded the clinically acceptable SBS levels. The combination of 3M ESPE Lava™ Plus and Symetri™ Clear exhibited significant variation in ARI. Additionally, significant surface irregularities were observed in 3M ESPE Lava™ Plus and Cercon® ht ML following air abrasion, compared to other transitional zirconia brands.

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与过渡牙科氧化锆粘接的正畸托槽的体外研究：剪切粘接强度、粘接残余指数和表面不规则性。

目的：正畸治疗通常需要在牙齿上粘接托槽，天然珐琅质的粘接方法与修复牙齿的粘接方法不同。随着成年正畸患者人数的增加，许多患者都使用氧化锆牙冠。本研究旨在评估陶瓷正畸托槽与过渡牙用氧化锆（结合了 3Y-TZP 和 5Y-TZP 粉末）粘结的剪切粘结强度（SBS）：根据过渡氧化锆品牌（3M ESPE Lava™ Plus、Cercon® ht ML 和 Katana™ Zirconia UTML）将 90 个氧化锆基底分为三组（n=30），并使用 3M™ Transbond™ XT 与陶瓷托槽（CHIC Ceramic Roth Maxillary 和 Symetri Clear）粘接。对照组使用传统的氧化锆和金属支架。表面处理包括 50 微米氧化铝研磨和 Z-Prime™ Plus 应用。热循环后测试 SBS。对粘合剂树脂指数（ARI）进行评分，并对粘合前后的表面粗糙度进行评估：第一组（3M ESPE Lava™ Plus 与 CHIC Ceramic Roth 上颌托槽）的 SBS 值（平均 13.27MPa）明显低于其他组，其他组的 SBS 值均高于 18.80MPa（P≤.023）。与对照组（Cercon® XT 与 Victory Series™ Roth）相比，第 2 组（3M ESPE Lava™ Plus 与 Symetri™ Clear）的平均 ARI 值明显更高（P=.027）。此外，B 组（Cercon® ht ML）（P=.008）和 C 组（Katana™ Zirconia UTML）（P=.016）的表面粗糙度也有明显变化：本研究确定，各种过渡氧化锆基底与陶瓷托槽的剪切粘结强度超过了临床可接受的 SBS 水平。3M ESPE Lava™ Plus 和 Symetri™ Clear 的组合在 ARI 方面表现出显著的差异。此外，与其他过渡氧化锆品牌相比，3M ESPE Lava™ Plus 和 Cercon® ht ML 在气磨后出现了明显的表面不规则。

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

International Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.50

自引率

13.30%

发文量

审稿时长

26 days

期刊介绍： Une revue de référence dans le domaine de orthodontie et des disciplines frontières Your reference in dentofacial orthopedics International Orthodontics adresse aux orthodontistes, aux dentistes, aux stomatologistes, aux chirurgiens maxillo-faciaux et aux plasticiens de la face, ainsi quà leurs assistant(e)s. International Orthodontics is addressed to orthodontists, dentists, stomatologists, maxillofacial surgeons and facial plastic surgeons, as well as their assistants.