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Parulis or Gumboil

Linda J. DeBowes, DVM, MS, Diplomate ACVIM (Small Animal Internal Medicine) & AVDC

Dentistry & Periodontology

|January 2006|Peer Reviewed

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Parulis or Gumboil

Clinician's Brief
A parulis (gumboil) below the mucogingival line of the lower right first molar indicates where a fistula from a periapical abscess is draining into the oral cavity. Such fistulas take the path of least resistance; therefore, the parulis generally forms through the alveolar mucosa or at the level of the mucogingival line where the attached gingiva begins. A dental radiograph should be made to identify the source of the draining fistula. This radiograph shows the periapical lucency typical of a chronic periapical abscess.

Related articles:
Canine Oral Pathology
Gingival Hyperplasia

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