Fig. 1From: Real-time co-site optical microscopy study on the morphological changes of the dentine’s surface after citric acid and sodium hypochlorite: a single-tooth modelSurface changes of dentine after four stages within two tested irrigating protocols. Two columns show samples obtained from the same split tooth: left column represents group 1, right—group 2. Images of the same region of the root canal show the progress of demineralization and degradationBack to article page