OPTION 3

⸙ Key Concept:     
֍ NaOCl is an effective nonspecific proteolytic and antimicrobial agent commonly used during the root canal therapy.
֍ Moreover, NaOCl is an effective hemostatic agent as well as diagnostic tool in differentiating between reversible and irreversible pulp inflammation.
֍ When bleeding cannot be stopped after 10 min of direct exposure to NaOCl, there is high probability of coronal pulp being irreversibly inflamed and needs removal.
֍ Hence, knowledge of using NaOCl as a diagnostic tool is important for the dental professionals.