Prevention of internal bacterial colonization of dental implants: A comparative longitudinal observational study
Objectives Previous studies have indicated a progressive internal bacterial colonization of implants and possible implications for peri‐implant bone loss. The aim of this study was to evaluate a decontamination protocol, two disinfectants, and a sealant for their ability to prevent such a colonizati...
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Published in | Clinical oral implants research Vol. 34; no. 9; pp. 979 - 986 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Denmark
Wiley Subscription Services, Inc
01.09.2023
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Subjects | |
Online Access | Get full text |
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Summary: | Objectives
Previous studies have indicated a progressive internal bacterial colonization of implants and possible implications for peri‐implant bone loss. The aim of this study was to evaluate a decontamination protocol, two disinfectants, and a sealant for their ability to prevent such a colonization.
Materials and Methods
Bacterial samples were harvested from the peri‐implant sulcus (external) and following abutment removal from the implant cavity (internal) during routine supportive peri‐implant care in 30 edentulous patients 2 years after they had obtained two implants. In a split‐mouth design, implants were randomly assigned to receive either internal decontamination alone (10% H2O2, brush) or additional placement of either sealant (GS), disinfectant agent (CHX‐varnish) or disinfectant gel (1% CHX‐gel), in the internal cavity before remounting of abutment/suprastructure. Twelve months later, internal and external sampling was repeated. Total bacterial counts (TBCs) were determined using real‐time PCR in a total of 240 samples (eight per patient).
Results
Total bacterial counts in the internal cavity significantly reduced overall treatment modalities 1 year after the treatments (4.0 [2.3–6.9]‐fold reduction; p = .000). No significant differences between the four treatment types were found (p = .348). Comparison of internal and external sampling points revealed significant correlation (R2 = .366; p = .000) with systematically higher TBC counts in external samples.
Conclusions
Within the limitations of the present study, it can be concluded that the use of disinfectant agents or a sealant did not show an additional benefit in the prevention of internal bacterial colonization of implants compared to a decontamination protocol alone. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Undefined-3 |
ISSN: | 0905-7161 1600-0501 |
DOI: | 10.1111/clr.14124 |