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Title: Electrochemical Disinfection of Dental Implants Experimentally Contaminated with Microorganisms as a Model for Periimplantitis
Author(s): Koch, Maximilian
Göltz, Maximilian
Xiangjun, Meng
Karl, Matthias
Rosiwal, Stefan
Burkovski, Andreas
Language: English
Title: Journal of Clinical Medicine
Volume: 9
Publisher/Platform: MDPI
Year of Publication: 2020
Free key words: air abrasion
antimicrobial treatment
biofilm
boron-doped diamond
mechanical debridement
reactive oxygen species
DDC notations: 610 Medicine and health
Publikation type: Journal Article
Abstract: Despite several methods having been described for disinfecting implants affected by periimplantitis, none of these are universally effective and may even alter surfaces and mechanical properties of implants. Boron-doped diamond (BDD) electrodes were fabricated from niobium wires and assembled as a single instrument for implant cleaning. Chemo-mechanical debridement and air abrasion were used as control methods. Different mono-species biofilms, formed by bacteria and yeasts, were allowed to develop in rich medium at 37 ◦C for three days. In addition, natural multi-species biofilms were treated. Implants were placed in silicone, polyurethane foam and bovine ribs for simulating different clinical conditions. Following treatment, the implants were rolled on blood agar plates, which were subsequently incubated at 37 ◦C and microbial growth was analyzed. Complete electrochemical disinfection of implant surfaces was achieved with a maximum treatment time of 20 min for Candida albicans, Candida dubliniensis, Enterococcus faecalis, Roseomonas mucosa, Staphylococcus epidermidis and Streptococcus sanguinis, while in case of spore-forming Bacillus pumilus and Bacillus subtilis, a number of colonies appeared after BDD electrode treatment indicating an incomplete disinfection. Independent of the species tested, complete disinfection was never achieved when conventional techniques were used. During treatment with BDD electrodes, only minor changes in temperature and pH value were observed. The instrument used here requires optimization so that higher charge quantities can be applied in shorter treatment times
DOI of the first publication: 10.3390/jcm9020475
Link to this record: urn:nbn:de:bsz:291--ds-304226
hdl:20.500.11880/29137
ISSN: 2077-0383
Date of registration: 13-May-2020
Third-party funds sponsorship: ITI Foundation, Switzerland
Sponsorship ID: 1328_2018
Description of the related object: Supplementary Material: Table S1: Overview of disinfection experiments. Sample size and groups are given for organisms and treatment methods applied (n.d., not determined). Embedment methods used: silicone, polyurethane foam and bovine ribs
Related object: https://www.mdpi.com/2077-0383/9/2/475/s1
Faculty: M - Medizinische Fakultät
Department: M - Zahn-, Mund- und Kieferheilkunde
Professorship: M - Prof. Dr. Matthias Karl
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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