Rathod, R.T., Poreddy, S.R., Poreddy, S.R., Durgabhavani, G., Gonapa, P., Thodsam , G. and Prasad, B.R. 2022. An in-vitro comparative evaluation for detection of residual gutta-percha after root canal retreatment with four different files using stereo microscope. International journal of health sciences. 6, S7 (Jul. 2022), 164–172. DOI:https://doi.org/10.53730/ijhs.v6n7.10799.