online ISSN 2415-3176
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ECPB 2022, 94(1): 13–22
Research articles

Clinical and microbiological characteristics of biofilm formation on new and reused dental healing abutments during implantation procedure


The oral mucosa is constantly contaminated by a large number of microorganisms that may cause diseases such as peri-mucositis and periimplantitis. Bacterial adhesion to different components of the dental implant system plays a significant role in the positive outcome of implantation. The aim of our investigation was to evaluate and compare oral biofilm formation level and to examine bacteria species on reused and new ones dental implant healing abutments. The study included 10 individuals with 26 implants and healing abutments 3 or 5 mm in height (18 reused and 8 new IHAs). The material for the microbacterial study was collected from surfaces of the IHAs. The obtained data demonstrated that the plaque biofilm formation was statistically higher on IHAs, which were reused, than on new ones and microorganism species composition on the IHAs of the two groups were different: from IHAs of group I significantly more pathogenic gram-negative microorganisms and Candida sp. were isolated, the flora was more diverse; leading factors of contamination group II IHAs were Streptococcus spp. and the flora was more monotonous. There weren’t any differences in prescribed oral hygiene.

Received: 11.04.2022

Keywords: bacteria, dental plaque, biofilm formation, dental implant, peri-implantitis, abutments, reuse

Full text: PDF (Ukr) 1.89M

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