For teeth with sensitivity, what is the best whitening gel concentration?

For patients WITH TOOTH SENSITIVITY, the LOWEST EFFECTIVE CONCENTRATION should be used. CARBAMIDE PEROXIDE 10% is the recommended concentration for SENSITIVE TEETH — it releases approximately 3.3% hydrogen peroxide slowly, is well-tolerated, and still achieves whitening results with longer wear time (overnight trays). Higher concentrations (22%, 35%) cause more sensitivity. In-office bleaching with high HP is generally avoided or used with desensitizers in sensitive patients. B is correct.