Clinical psychoanalysts do indeed practice dialectics. Lacan, for example, often claimed that the whole movement of a session depends entirely upon the making said (dit) of that which hitherto remained unsaid. In other words, there within the speech of the analysand is a signifier (S1) which insists on being said before the analysand may move beyond his or her current roadblock.
It is the same with everyday communication among friends, family, partners, colleagues, etc.
Frequently, “sorry” is a master signifier which must be unearthed from speech before a conversation or relationship can advance to the next logical stage. This is the true meaning of the Hegelian word “Aufhenbung” within Lacanian dialectics. Without the “sorry” there is only a roadblock and nothing can move forward.