Mercy-Cure Root surface conditioning removes not only root instrumentation smear layer, but also any remaining root surface contaminants. It is not possible to decontaminate a periodontitis-affected root surface completely by mechanical means alone mainly because the bacterial toxins are not completely eliminated from the root surface and the instrumented surface will inevitably be covered by a smear layer which contains remnants of dental calculus, contaminated cementum and subgingival plaque which acts as a physical barrier between periodontal tissues and root surfaces and thus inhibiting the formation of new attachment. **For further product information, please contact Chat Support**