{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T21:23:52Z","timestamp":1789248232155,"version":"build-2803163510"},"reference-count":34,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2023,10,6]],"date-time":"2023-10-06T00:00:00Z","timestamp":1696550400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int Endodontic J"],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>To determine the prevalence of symptoms, clinical signs and radiographic presentation of external cervical resorption (ECR).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methodology<\/jats:title><jats:p>This study involved 215 ECR lesions in 194 patients referred to the Endodontic postgraduate Unit at King's College London or Specialist Endodontic practice (London, UK). The clinical and radiographic findings (periapical [PA] and cone beam computed tomography [CBCT]) were readily accessible for evaluation. A checklist was used for data collection. Inferential analysis was carried out to determine if there was any potential association between type and location of tooth in the jaw as well as sex, age of the patient and ECR presentation and radiographic feature.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eighty\u2010eight patients (94 teeth) were female and 106 patients were male (121 teeth), the mean age (\u00b1SD) was 41.5 (\u00b117.7) years. Fifteen patients (7.7%) had more than one ECR lesion. The most affected teeth were maxillary central incisors (21.4% [46 teeth]) and mandibular first molars (10.2% [22 teeth]). ECR was most commonly detected as an incidental radiographic finding in 58.1% [125 teeth] of the cases. ECR presented with symptoms of pulpal\/periapical disease in 23.3% [<jats:italic>n<\/jats:italic>\u2009=\u200950] and clinical signs (e.g. pink spot, cavitation) in 16.7% [36 teeth] of the cases.<\/jats:p><jats:p>Clinical signs such as cavitation (14%), pink spot (5.1%) and discolouration (2.8%) were uncommon, but their incidence increased up to 24.7% when combined with other clinical findings. ECR was detected in the resorptive and reparative phases in 70.2% and 29.8% of the cases respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>ECR appears to be quiescent in nature, the majority being asymptomatic and diagnosed incidentally from PA or CBCT. When assessed with the Patel classification, most lesions were minimal to moderate in relation to their height (1 or 2) and circumferential spread (A or B). However, the majority of ECRs were in (close) proximity to the pulp. Symptoms and clinical signs were associated with (probable) pulp involvement rather than the height and circumferential spread of the lesion. Clinical signs were more frequently associated when ECR affected multiple surfaces.<\/jats:p><\/jats:sec>","DOI":"10.1111\/iej.13968","type":"journal-article","created":{"date-parts":[[2023,10,7]],"date-time":"2023-10-07T05:14:00Z","timestamp":1696655640000},"page":"1475-1487","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Clinical and radiographic features of external cervical resorption \u2013 An observational study"],"prefix":"10.1111","volume":"56","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0614-6951","authenticated-orcid":false,"given":"Shanon","family":"Patel","sequence":"first","affiliation":[{"name":"Faculty of Dentistry Oral &amp; Craniofacial Sciences, King's College London  London UK"},{"name":"Private Practice  London UK"},{"name":"Guy's &amp; St. Thomas' NHS Trust  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3500-3039","authenticated-orcid":false,"given":"Francesc","family":"Abella","sequence":"additional","affiliation":[{"name":"Universitat Internacional de Catalunya  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6264-5168","authenticated-orcid":false,"given":"Kreena","family":"Patel","sequence":"additional","affiliation":[{"name":"Faculty of Dentistry Oral &amp; Craniofacial Sciences, King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1760-5703","authenticated-orcid":false,"given":"Paul","family":"Lambrechts","sequence":"additional","affiliation":[{"name":"Department of Oral Health Sciences, Endodontology University Hospitals Leuven, KU Leuven  Leuven Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8748-062X","authenticated-orcid":false,"given":"Nassr","family":"Al\u2010Nuaimi","sequence":"additional","affiliation":[{"name":"Faculty of Dentistry Oral &amp; Craniofacial Sciences, King's College London  London UK"},{"name":"Department of Restorative &amp; Aesthetic Dentistry, College of Dentistry University of Baghdad  Baghdad Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,10,6]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12057"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1834-7819.2000.tb00234.x"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1034\/j.1600-051X.2002.290615.x"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joen.2023.03.005"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/iej.13008"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.5395\/rde.2022.47.e39"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2591.1995.tb00310.x"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/iej.12073"},{"key":"e_1_2_9_10_1","first-page":"83","article-title":"Invasive cervical resorption: an analysis of potential predisposing factors","volume":"30","author":"Heithersay G.S.","year":"1999","journal-title":"Quintessence International"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tripleo.2007.01.020"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joen.2020.05.021"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joen.2020.01.011"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.311.7001.376"},{"key":"e_1_2_9_15_1","first-page":"914","article-title":"Resorption pattern and radiographic diagnosis of invasive cervical resorption. 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