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Antibacterial effectiveness of dentin bonding systems
1School of Dentistry, University of Bologna, Italy.
Summary
Glass ionomer cements exhibit significant antibacterial activity against common oral bacteria. This property suggests their potential to reduce microleakage when used as cavity liners or bases.
Area of Science:
- Dental Materials Science
- Microbiology
- Biomaterials
Background:
- Dental caries and microleakage are significant concerns in restorative dentistry.
- Evaluating the antibacterial properties of dental materials is crucial for preventing secondary infections.
Purpose of the Study:
- To assess the antibacterial efficacy of various dental materials, including glass ionomer cements, dentin bonding systems, and luting agents.
- To compare the antibacterial activity of these materials against common oral bacteria.
Main Methods:
- Agar plate diffusion (APD) and growth inhibition (GI) assays were employed.
- Four bacterial strains (Streptococcus mutans, S. salivarius, S. mitis, S. sanguis) were tested.
- Materials included glass ionomer cements, dentin bonding systems, luting agents, amalgam, and resin composites.
Main Results:
- Glass ionomer cements demonstrated marked antibacterial activity against all tested bacterial strains.
- Amalgam, resin composites, luting agents, and dentin bonding systems showed no significant effect on bacterial growth.
- Both APD and GI methods yielded consistent results regarding material efficacy.
Conclusions:
- Glass ionomer cements possess inherent antibacterial properties beneficial for oral health.
- The use of glass ionomer cements as cavity liners/bases may mitigate microleakage issues due to their antimicrobial effects.