The cavity margin and dentin close to the pulp in deep caries

Sometimes there is hard, brown decay at the cavity margin, and it does not come off with the micromotor. Should we leave this decay there? If we leave it, will it adversely affect the bond?

Translated version of the Turkish original

At the cavity margin, it is cleaned away as completely as possible; we can leave the hard areas close to the pulp.

Author of the original answer: Doç. Dr. İsmail Davut Çapar

Medical review of the Turkish original:

Turkish answer published on this website:

Translation published:

The review date refers to the Turkish original; it does not indicate a separate medical review of the translation.