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Updated: May 4, 2026
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
Effect of chlorhexidine in preventing plaque biofilm on healing abutment: a crossover controlled study
Eriberto Bressan1, Francesco Tessarolo, Luca Sbricoli
1*Chairman, Department of Neurosciences, Institute of Clinical Dentistry, University of Padova, Padova, Italy. †Resident, Healthcare Research and Innovation Program (IRCS), Bruno Kessler Foundation, Trento, Italy; Department of Industrial Engineering, University of Trento, Trento, Italy. ‡Resident, Department of Neurosciences, Institute of Clinical Dentistry, University of Padova, Padova, Italy. §Resident, Department of Medicine Laboratory, APSS, Trento, Italy.
Introduction:
The study aimed at evaluating the effect of chlorhexidine (CHX) in preventing plaque biofilm (PB) formation on healing abutments (HAs) in patients rehabilitated with osseointegrated implants.
Materials And Methods:
Fifty HAs were placed in 34 voluntary patients 1 week after implant surgery (test group). After 7 days, a new set of 50 HAs was placed in the same implant sites and removed 1 week after (control group). During the 2 testing periods, patients were instructed to apply: CHX mouth rinsing twice daily and no brushing (test); no CHX mouth rinsing and no brushing (control). Scanning electron microscopy and image analysis were blindly used to objectively quantify PB amount on removed HAs.
Results:
Median values and interquartile ranges of the percent ratio of titanium surface covered from PB were 0.9 (0.1-4.1) and 1.2 (0.1-11.6) for test and control groups, respectively (P = 0.0275).
Conclusions:
CHX mouth rinsing significantly limited plaque formation on HAs, being a valid contribution to mechanical brushing in early phases of plaque control on dental implants.
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