Collagen barrier membranes may accelerate bacterial growth in vitro: a potential clinical risk to regenerative
Objectives:
Evaluate the antibacterial properties of three commercial collagen membranes for guided bone regeneration (GBR).
Method And Materials:
BioGide®, OsseoGuard®, and CopiOs® membranes were tested for antibacterial properties against Streptococcus sanguinis, Staphylococcus aureus, and Staphylococcus epidermidis using a direct contact test (DCT). Samples of each membrane, sized 5 × 2 mm, were fixed to the side wall of 6 wells in a 96-well microtiter plate. Bacterial suspension was placed on each sample. The plate was incubated at 37°C for 1 hour to allow suspension fluid evaporation. Fresh medium was added to each well and the plate was mixed. Non-contaminated membrane samples served as negative control. Bacterial growth was monitored spectrophotometrically at 650 nm for 24 hours. ANOVA and Tukey's comparison tests were used for the statistical analysis.
Results:
The presence of the membrane samples did not disrupt bacterial growth. However, the presence of OsseoGuard membrane accelerated bacterial growth rate of S sanguinis and S epidermidis as compared to the other two membranes and control samples (P < .001), and of S aureus as compared to the control alone (P < .001).
Conclusions:
The tested collagen membranes have no antibacterial properties. However, OsseoGuard presents a significant bacterial growth enhancement effect with possible significant clinical implications on the success of regenerative procedures around teeth and implants.
Insights
Collagen membranes used in guided bone regeneration (GBR) showed no antibacterial properties. However, the OsseoGuard membrane significantly enhanced bacterial growth, potentially impacting regenerative procedure success.
Area of Science:
- Biomaterials Science
- Periodontology
- Microbiology
Background:
- Collagen membranes are widely used in guided bone regeneration (GBR) procedures.
- Assessing the antibacterial properties of these membranes is crucial for clinical success.
- Potential bacterial contamination can compromise GBR outcomes.
Purpose of the Study:
- To evaluate the antibacterial properties of three commercial collagen membranes: BioGide®, OsseoGuard®, and CopiOs®.
- To determine if these membranes inhibit or promote bacterial growth.
- To assess the clinical implications of membrane-associated bacterial interactions.
Main Methods:
- A direct contact test (DCT) was employed to assess antibacterial properties.
- Three bacterial species (Streptococcus sanguinis, Staphylococcus aureus, Staphylococcus epidermidis) were used.
- Bacterial growth was monitored spectrophotometrically over 24 hours, with statistical analysis using ANOVA and Tukey's tests.
Main Results:
- None of the tested collagen membranes exhibited antibacterial properties.
- The OsseoGuard membrane significantly accelerated the growth rate of S. sanguinis and S. epidermidis compared to controls (P < .001).
- OsseoGuard also enhanced S. aureus growth compared to the control group (P < .001).
Conclusions:
- Commercial collagen membranes for GBR lack inherent antibacterial activity.
- OsseoGuard demonstrates a significant bacterial growth-enhancing effect.
- This finding has potential clinical implications for the success of regenerative procedures around teeth and implants.
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