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29 Feb 2024 (Vol 47 , Iss 02 )

Journal ID : TMJ-21-02-2022-11145
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Title : Proliferation of Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and Prevotella intermedia on exposed RBM and SLA dental implant surfaces

Abstract :

This study aimed to compare the proliferation of Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans), Porphyromonas gingivalis (P. gingivalis), and Prevotella intermedia (P. intermedia) on exposed resorbable blast media (RBM) and sandblasted, large grit, acid-etched (SLA) dental implant surfaces. In this in vitro, experimental study, RBM and SLA dental implant surfaces (n=5 from each type) were inoculated with A. actinomycetemcomitans, P. gingivalis, and P. intermedia in well-plates. Microbial proliferation in the wells was evaluated by measuring the optical density (OD) of the well contents at 650 nm wavelength every 60 minutes for 24 hours at 37°C using a spectrophotometer. Data were analyzed using generalized estimating equation. The results showed ascending trend of proliferation of all three microorganisms on both types of exposed implant surfaces within 24 hours. Proliferation of bacteria was not significantly different on RBM and SLA implant surfaces (P>0.05). The proliferation rate of bacteria on both surfaces was significantly greater from 8 to 24 hours compared with the first hour (P<0.05). However, the mean proliferation rate of bacteria on the two surfaces was not significantly different at 24 hours (P>0.05). Within the limitations of this in vitro study, the results showed that RBM and SLA dental implant surfaces had no significant difference regarding the proliferation of A. actinomycetemcomitans, P. gingivalis, and P. intermedia. Further studies are required to confirm this finding.

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