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Updated: Jun 15, 2026

Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
The microbiota associated with implants restored with platform switching: a preliminary report
Luigi Canullo1, Alessandro Quaranta, Ricardo P Teles
1Department of Orthodontics, University of Bonn, Bonn, Germany. luigicanullo@yahoo.com
Platform-switching dental implants showed no significant difference in peri-implant microbiota compared to standard implants. This suggests that reduced bone loss with platform switching is not linked to changes in bacterial composition.
Area of Science:
- Dental Implantology
- Microbiology
- Periodontology
Background:
- Platform-switching (PS) restorations are associated with less crestal bone loss than standard protocols.
- The peri-implant microbiota composition in PS restorations remains under investigation.
Purpose of the Study:
- To compare the peri-implant microbiota of platform-switching (PS) implants with traditional internal connection implants.
- To determine if differences in bone levels correlate with microbial changes.
Main Methods:
- 48 implants (33 PS, 15 traditional) in 18 subjects were analyzed 36 months post-loading.
- Subgingival plaque samples were collected from implant surfaces and adjacent teeth.
- 40 subgingival species were quantified using checkerboard DNA-DNA hybridization.
Main Results:
- No statistically significant differences in microbial species were found between PS and traditional implant groups.
- A slight trend indicated lower levels of certain early colonizers and specific periodontal pathogens in the PS group.
- Microbial profiles of teeth and implants were similar.
Conclusions:
- The reduced crestal bone loss observed with platform-switching implants is not attributable to significant differences in the peri-implant microbiota.
- Further research may explore other factors influencing bone levels in PS restorations.
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