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Updated: Jul 18, 2026
10:43
High-throughput Identification of Bacteria Repellent Polymers for Medical Devices
Published on: November 5, 2016
Surface antibacterial properties of compomers
Summary
This study found that while F2000 compomers showed initial antibacterial properties against Streptococcus mutans, none of the tested compomers provided significant long-term antibacterial activity in dental restorations.
Area of Science:
- Dental Materials Science
- Microbiology
- Restorative Dentistry
Background:
- Compomers (Polyacid Modified Composite Resin) are widely used in pediatric dentistry for primary dentition.
- Secondary caries and pulpal pathology can arise from microorganisms at the tooth-restoration interface.
- Evaluating the antibacterial properties of compomers is crucial for improving restorative material efficacy.
Purpose of the Study:
- To evaluate the antibacterial properties of four compomers: Freedom, F2000, Dyract, and Hytac Hplitip.
- To assess antibacterial activity using both direct contact test (DCT) and agar diffusion test (ADT).
- To determine the long-term antibacterial efficacy of these compomers.
Main Methods:
- Four compomers were tested using direct contact test (DCT) and agar diffusion test (ADT) against Streptococcus mutans.
- Samples were tested freshly polymerized and after aging in phosphate-buffered saline for 1 and 7 days.
- Bacterial growth was monitored spectrophotometrically for DCT, and inhibition zones were measured for ADT.
Main Results:
- Freshly polymerized F2000 exhibited the most potent antibacterial properties in DCT; Hytac Hplitip showed moderate activity.
- Dyract and Freedom showed no significant antibacterial activity in DCT.
- Only F2000 demonstrated a measurable inhibition zone (2.15+/-0.3 mm) in the ADT; aged samples showed no antibacterial activity.
Conclusions:
- None of the tested compomers demonstrated significant long-term antibacterial activity.
- Initial antibacterial effects observed with F2000 and Hytac Hplitip diminished over time.
- Further research may be needed to develop compomers with sustained antibacterial properties.
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