Background: Recent studies in regenerative endodontics have revealed that treatment shows different types of root growth. In the Chen and Chen index, 5 different types of root growth were reported after regenerative endodontic treatment (RET). The aim of this study is to evaluate the effect of platelet-rich plasma (PRP) and platelet-rich fibrin (PRF) scaffolds used in RET on apical response type. Methods: In this study, 38 cases who received RET were evaluated retrospectively. PRP scaffold was used in 16 of the cases and PRF scaffold was used in 22 of the cases. Root development results of the treatment in both treatment groups were evaluated radiographically. The root response type of all cases was classified according to the Chen and Chen index. Results: Type 3 was found to be the most common apical response type for the treatment groups. There was no statistically significant difference between PRP and PRF treatment groups (p=0,363>0,05). Obliterations were observed in the root canals of some teeth. Conclusion: It is difficult to predict the apical healing type in RET. Obliterations are a common consequence of RET and the risk of obliteration may increase over time. Although the types of healing differ, all types of healing show successful results in terms of the survival of the teeth. Although healing types vary, all healing types shows successful results in terms of dental survival.