Rapidly progressing extracanal invasive resorption.
Frank and Bakland coined the term "Extracanal invasive resorption" (EIR) to identify a resorptive entity that has been variously classified. This external resorption originates in the cementum adjacent to the periodontal ligament. The lesion is believed to be a response to injury and irritation of the periodontal ligament, or to pressure from ectopic eruption, orthodontic pressure, intracoronal bleaching, periodontal treatment, or an unknown idiopathic cause.
Mock
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Hospital Dental Clinic, Fort Leonard Wood, Missouri, USA.
Wolff
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Galvan
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D000328:Adult; D001641:Bicuspid / Q000293:injuries; D003742:Dental Devices, Home Care / Q000009:adverse effects*; D003786:Dental Pulp Cavity; D006801:Humans; D008297:Male; D009910:Oral Hygiene / Q000009:adverse effects / Q000379:methods; D011859:Radiography; D012391:Root Resorption / Q000000981:diagnostic imaging / Q000209:etiology*; D013997:Time Factors; D019237:Tooth Cervix / Q000293:injuries