Antimicrobial Efficacy and Permeability of Various Sealing Materials in Two Different Types of Implant–Abutment Connections

Scientific paper - Original scientific paper

• Author: Igor Smojver
• Author: Roko Bjelica
• Author: Marko Vuletić
• Author: Dražena Gerbl
• Author: Ana Budimir
• Author: Dragana Gabrić
• Author's institution: University of Zagreb; School of Medicine; (Department of Anaesthesiology, Resuscitation and Intensive Care in Surgical Specialities)
• Author's institution: University of Zagreb; School of Medicine; (Department of Medical Microbiology and Parasitology)
• Author's institution: University of Zagreb; School of Dental Medicine; (Department of Oral Surgery)
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Oral Surgery

Abstract (english)

The presence of a microgap along an implant–abutment connection (IAC) is considered the main disadvantage of two-piece implant systems. Its existence may lead to mechanical and biological complications. Different IAC designs have been developed to minimise microleakage through the microgap and to increase the stability of prosthodontic abutments. Furthermore, different sealing materials have appeared on the market to seal the gap at the IAC. The purpose of this study was to evaluate the antimicrobial efficacy and permeability of different materials designed to seal the microgap, and their behaviour in conical and straight types of internal IACs. One hundred dental implants with original prosthodontic abutments were divided into two groups of fifty implants according to the type of IAC. Three different sealing materials (GapSeal, Flow.sil, and Oxysafe gel) were applied in the test subgroups. The contamination of implant–abutment assemblies was performed by a joint suspension containing Candida albicans and Staphylococcus aureus. It was concluded that the IAC type had no significant influence on microleakage regarding microbial infection. No significant difference was found between the various sealing agents. Only one sealing agent (GapSeal) was found to significantly prevent microleakage. A complete hermetic seal was not achieved with any of the sealing agents tested in this study.

• Keywords (english): dental implant-abutment design; peri-implantitis; microbial colony count; candida albicans; staphylococcus aureus
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: International Journal of Molecular Sciences
• Numbering: vol. 23, no. 14, 8031
• e-ISSN: 1422-0067
• DOI: https://doi.org/10.3390/ijms23148031
• URN:NBN: urn:nbn:hr:127:853250
• Publication: 2022-07-21
• Document URL: https://www.mdpi.com/1422-0067/23/14/8031
• Type of resource: Text
• Access conditions: Open access
• Created on: 2022-10-27 08:28:57