It depends on the chemistry of the cementation media,  and the clinical technique.  The in vitro tests and clinical studies supporting our products include a wide variety (brands, chemistries and  generations) of adhesives and cements. In most of the failures seen,  the failure is at  the cement-dentin interface, and not at the post-cement interface.

Moisture control is always critical to bond fiber post with dentin and Rubber dam is always a good idea.

Always be sure that the adhesive system you are using is proven to react properly with dual-cure and chemical-cure cements.