Additive manufacturing has been consolidating its position in various fields over the last few decades. The development of drug delivery systems like oral tablets have been successfully accomplished using this ingenious technology. The effectiveness of an oral tablet can be analysed by its drug release behaviour and this study aims to predict this release by developing a model for a 3D printed tablet dissolution. A polymer-dissolution based mathematical model have been developed by considering a novel layer-by-layer approach that is found during additive manufacturing procedure. The shape and volume of the tablet have been found to be crucial in predicting the drug dissolution for a given time. Further, the model was verified against the drug dissolution trend obtained from a Fused Deposition Modeling (FDM)-printed polyvinyl alcohol (PVA) tablet having benidipine hydrochloride drug substance. Four different shapes have been considered to test the robustness of the model. Further, the sensitivity test have been conducted on the model and it revealed detachment rate and layer thickness as significant process parameters.