Abstract The objective was to test the influence of a pulsed electromagnetic field (PEMF) on bacterial biofilm colonization around implants incorporated with healing abutments. Healing abutments with (test group) and without (control group) active PEMF devices were placed in a multispecies biofilm consisting of 31 different bacterial species. The biofilm composition and total bacterial counts (x105) were analyzed by checkerboard DNA-DNA hybridization. After 96 h, the mean level of 7 out of the 31 bacterial species differed significantly between groups, namely Eubacterium nodatum, Fusobacterium nucleatum ssp. nucleatum, Streptococcus intermedius, Streptococcus anginosus, Streptococcus mutans, Fusobacterium nucleatum ssp. Vicentii and Capnocytophaga ochracea were elevated in the control group (p < 0.05). The mean total bacterial counts were lower in the Test group vs the control group (p < 0.05). An electromagnetic healing cap had antimicrobial effects on the bacterial species and can be used to control bacterial colonization around dental implants. Further clinical studies should be conducted to confirm these findings.

中文翻译：

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脉冲电磁场​​的抗菌作用：体外多微生物牙周龈下生物膜模型

摘要 目的是测试脉冲电磁场​​ (PEMF) 对结合愈合基台的种植体周围细菌生物膜定植的影响。有（测试组）和没有（对照组）有源 PEMF 装置的愈合基台被放置在由 31 种不同细菌组成的多物种生物膜中。通过棋盘 DNA-DNA 杂交分析生物膜组成和细菌总数 (x105)。96 小时后，31 种细菌中 7 种的平均水平在组间显着不同，即结节真杆菌、具核梭杆菌 ssp。具核菌、中间链球菌、咽峡炎链球菌、变形链球菌、具核梭杆菌属。Vicentii 和 Capnocytophaga ochracea 在对照组中升高（p < 0.05）。与对照组相比，测试组的平均细菌总数较低 (p < 0.05)。电磁愈合帽对细菌种类具有抗菌作用，可用于控制牙种植体周围的细菌定植。应进行进一步的临床研究以证实这些发现。