“…10,28 The reported prevalence of DH following surgical therapy was 76.8-80.4% after 1 day, 29 36.8% after 1 week, 33.4% after 2 weeks, 29.6% after 4 weeks, and 21.7% after 8 weeks. 30 Although the removal of root cementum should be kept minimal, root instrumentation exposes dentinal tubules to the oral environment, thus exposing the dentin to a variety of bacterial, chemical, and mechanical stimuli. 31 DH usually reduces within a few weeks or months by formation of secondary dentin and natural occlusion of tubules by intertubular dentin.…”