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Article

Micro-CT Evaluation of Microgaps at Implant-Abutment Connection

by
Jakub Kowalski
1,
Adam K. Puszkarz
2,
Mateusz Radwanski
3,
Jerzy Sokolowski
1,
Michal Cichomski
4,
Rim Bourgi
5,
Louis Hardan
5,
Salvatore Sauro
6,7 and
Monika Lukomska-Szymanska
1,*
1
Department of General Dentistry, Medical University of Lodz, 92-213 Lodz, Poland
2
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
3
Department of Endodontics, Medical University of Lodz, 92-213 Lodz, Poland
4
Department of Material Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
5
Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon
6
Dental Biomaterials and Minimally Invasive Dentistry, Departamento de Odontología, Facultad de Cienciasde la Salud, Universidad CEU-Cardenal Herrera, C/Del Pozo ss/n, Alfara del Patriarca, 46115 Valencia, Spain
7
Department of Therapeutic Dentistry, I. M. Sechenov First Moscow State Medical University, 119146 Moscow, Russia
*
Author to whom correspondence should be addressed.
Materials 2023, 16(12), 4491; https://doi.org/10.3390/ma16124491
Submission received: 18 April 2023 / Revised: 10 June 2023 / Accepted: 17 June 2023 / Published: 20 June 2023
(This article belongs to the Special Issue Biomaterials and Mechanics in Dentistry)
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Abstract

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 (p > 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 (p > 0.05). Additionally, the average microgap volume was greater for Apollo than for Astra (p > 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.
Keywords: dental implant; microgap; micro-computed tomography; abutment dental implant; microgap; micro-computed tomography; abutment

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MDPI and ACS Style

Kowalski, J.; Puszkarz, A.K.; Radwanski, M.; Sokolowski, J.; Cichomski, M.; Bourgi, R.; Hardan, L.; Sauro, S.; Lukomska-Szymanska, M. Micro-CT Evaluation of Microgaps at Implant-Abutment Connection. Materials 2023, 16, 4491. https://doi.org/10.3390/ma16124491

AMA Style

Kowalski J, Puszkarz AK, Radwanski M, Sokolowski J, Cichomski M, Bourgi R, Hardan L, Sauro S, Lukomska-Szymanska M. Micro-CT Evaluation of Microgaps at Implant-Abutment Connection. Materials. 2023; 16(12):4491. https://doi.org/10.3390/ma16124491

Chicago/Turabian Style

Kowalski, Jakub, Adam K. Puszkarz, Mateusz Radwanski, Jerzy Sokolowski, Michal Cichomski, Rim Bourgi, Louis Hardan, Salvatore Sauro, and Monika Lukomska-Szymanska. 2023. "Micro-CT Evaluation of Microgaps at Implant-Abutment Connection" Materials 16, no. 12: 4491. https://doi.org/10.3390/ma16124491

APA Style

Kowalski, J., Puszkarz, A. K., Radwanski, M., Sokolowski, J., Cichomski, M., Bourgi, R., Hardan, L., Sauro, S., & Lukomska-Szymanska, M. (2023). Micro-CT Evaluation of Microgaps at Implant-Abutment Connection. Materials, 16(12), 4491. https://doi.org/10.3390/ma16124491

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