There is a cyclic dependency between ignorance and defilements (also called taints or fermentation).
Ignorance originates from defilement. Ignorance ceases when defilement
Āsavasamudayā avijjāsamudayo, āsavanirodhā avijjānirodho
Defilement originates from ignorance. Defilement ceases when ignorance
Avijjāsamudayā āsavasamudayo, avijjānirodhā ...
We should be careful with this line of reasoning (as with all lines of reasoning). One doesn't eliminate a shadow by moving the light; moving the light casts a shadow in a different direction. 'Dependent cessation' sounds like dependent origination in a destructive mode. Just as the presence of a thing can be 'caused', the absence of it can be 'caused' as ...
There is in fact, a forward version and a reverse version of dependent origination. Rather than calling it the two sides of the same coin, they are more like heads and tails - two different sides of the same coin (of samsara).
This is the forward version which starts with ignorance (avijja) and ends with suffering (dukkha):
“Thus, bhikkhus, with ignorance ...