Kowalski Jakub, Puszkarz Adam K, Radwanski Mateusz, Sokolowski Jerzy, Cichomski Michal, Bourgi Rim, Hardan Louis, Sauro Salvatore, Lukomska-Szymanska Monika
Department of General Dentistry, Medical University of Lodz, 92-213 Lodz, Poland.
Faculty of Material Technologies and Textile Design, Institute of Material Science of Textiles and Polymer Composites, Lodz University of Technology, 116 Zeromskiego Street, 90-924 Lodz, Poland.
Materials (Basel). 2023 Jun 20;16(12):4491. doi: 10.3390/ma16124491.
The assessment of microgaps at the implant-abutment interface is an important factor that may influence clinical success. Thus, the aim of this study was to evaluate the size of microgaps between prefabricated and customised abutments (Astra Tech, Dentsply, York, PA, USA; Apollo Implants Components, Pabianice, Poland) mounted on a standard implant. The measurement of the microgap was performed using micro-computed tomography (MCT). Due to 15-degree rotation of samples, 24 microsections were obtained. Scans were performed at four levels established at the interface between the abutment and the implant neck. Moreover, the volume of the microgap was evaluated. The size of the microgap at all measured levels varied from 0.1 to 3.7 µm for Astra and from 0.1 to 4.9 µm for Apollo ( > 0.05). Moreover, 90% of the Astra specimens and 70% of the Apollo specimens did not exhibit any microgaps. The highest mean values of microgap size for both groups were detected at the lowest portion of the abutment ( > 0.05). Additionally, the average microgap volume was greater for Apollo than for Astra ( > 0.05). It can be concluded that most samples did not exhibit any microgaps. Furthermore, the linear and volumetric dimensions of microgaps observed at the interface between Apollo or Astra abutments and Astra implants were comparable. Additionally, all tested components presented microgaps (if any) that were clinically acceptable. However, the microgap size of the Apollo abutment was higher and more variable than that of the Astra one.
种植体-基台界面微间隙的评估是可能影响临床成功的一个重要因素。因此，本研究的目的是评估安装在标准种植体上的预制基台和定制基台（美国宾夕法尼亚州约克市登士柏公司的Astra Tech；波兰帕比亚尼采的阿波罗种植体组件）之间微间隙的大小。使用微计算机断层扫描（MCT）进行微间隙的测量。由于样本旋转15度，获得了24个微切片。在基台与种植体颈部之间的界面处设定的四个水平进行扫描。此外，还评估了微间隙的体积。Astra基台在所有测量水平的微间隙大小为0.1至3.7 µm，阿波罗基台为0.1至4.9 µm（P>0.05）。此外，90%的Astra样本和70%的阿波罗样本未显示任何微间隙。两组微间隙大小的最高平均值均在基台的最低部分检测到（P>0.05）。此外，阿波罗基台的平均微间隙体积大于Astra基台（P>0.05）。可以得出结论，大多数样本未显示任何微间隙。此外，在阿波罗或Astra基台与Astra种植体之间的界面处观察到的微间隙的线性和体积尺寸具有可比性。此外，所有测试组件的微间隙（如果有）在临床上都是可接受的。然而，阿波罗基台的微间隙大小高于Astra基台，且变化更大。
