“…However, it is important to differentiate these lesions by probing because depending on its state, caries will feel soft or sticky, whereas ECR will be hard and scratchy producing a scraping sound when probed (Patel et al, 2018c;Sarmento et al, 2020;Ehlinger et al, 2019). The lesion location on the root surface directly interferes on treatment (Patel & Beddis, 2019;Ehlinger et al, 2019;Libonati, et al, 2017). In advanced cases, a pink discoloration may appear on the tooth as a result of the soft tissue color shining through the thin tooth tissue overlying the resorption cavity (Patel, Foschi, Condon, Pimentel & Bhuva, 2018a;Sarmento et al, 2020).…”