Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medical, Shanghai, China.
Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, China.
Orthod Craniofac Res. 2021 Nov;24(4):520-527. doi: 10.1111/ocr.12465. Epub 2021 Jan 15.
The aim of this study was to assess the operation time, shear bond strength, placement accuracy and wear resistance of 3 composite materials (Filtek Z350XT, Filtek Z350XT Flowable and SonicFill) that were used to make attachments for clear aligners.
Laboratory of Stomatology of Shanghai Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine. A total of 129 human mandibular premolars were collected, 69 of which were assigned to 3 groups (A1, B1 and C1). The remaining 60 teeth were divided into 3 groups (A2, B2 and C2).
Z350XT composite resin was used in groups A1 and A2 to bond the attachments. Z350XT Flowable composite resin was used in groups B1 and B2. SonicFill composite resin was used in groups C1 and C2. The operation time, shear bond strength, the placement accuracy and wear volume loss of 3 composite materials were evaluated.
The operation time of Z350XT Flowable and SonicFill was shorter than Z350XT (P < .05). The shear bond strength of SonicFill was higher than Z350XT and Z350XT Flowable (P < .05). The SEM showed that the bonding interface of Z350XT and SonicFill was compact. The 3D deviation and volumetric change in the 3D designed attachments and the attachments after actual bonding of Z350XT Flowable were greater than that of Z350XT and SonicFill (P < .05). The wear volume loss of SonicFill and Z350XT was less than that of Z350XT Flowable (P < .05).
SonicFill seems to represent a suitable material for producing attachments, which optimized the property combination.
本研究旨在评估 3 种复合树脂材料（Filtek Z350XT、Filtek Z350XT Flowable 和 SonicFill）用于制作透明牙套附件的操作时间、剪切粘结强度、放置准确性和耐磨性。
上海交通大学医学院附属第九人民医院口腔科实验室。共收集 129 颗人下颌前磨牙，其中 69 颗分为 3 组（A1、B1 和 C1）。其余 60 颗牙分为 3 组（A2、B2 和 C2）。
A1 组和 A2 组用 Z350XT 复合树脂粘结附件，B1 组和 B2 组用 Z350XT Flowable 复合树脂，C1 组和 C2 组用 SonicFill 复合树脂。评估 3 种复合材料的操作时间、剪切粘结强度、放置准确性和磨损体积损失。
Z350XT Flowable 和 SonicFill 的操作时间短于 Z350XT（P<.05）。SonicFill 的剪切粘结强度高于 Z350XT 和 Z350XT Flowable（P<.05）。SEM 显示 Z350XT 和 SonicFill 的粘结界面致密。Z350XT Flowable 三维设计附件与实际粘结后的附件的三维偏差和体积变化大于 Z350XT 和 SonicFill（P<.05）。SonicFill 和 Z350XT 的磨损体积损失小于 Z350XT Flowable（P<.05）。
SonicFill 似乎是一种适合制作附件的材料，优化了性能组合。
