title: Large Reactional Osteogenesis in Maxillary Sinus Associated with Secondary Root Canal Infection Detected Using Cone-beam Computed Tomography.
abstract: Inflammatory injuries in the maxillary sinus may originate from root canal infections and lead to bone resorption or regeneration. This report describes the radiographic findings of 4 asymptomatic clinical cases of large reactional osteogenesis in the maxillary sinus (MS) associated with secondary root canal infection detected using cone-beam computed tomographic (CBCT) imaging. Apical periodontitis, a consequence of root canal infection, may lead to a periosteal reaction in the MS and osteogenesis seen as a radiopaque structure on imaging scans. The use of a map-reading strategy for the longitudinal and sequential slices of CBCT images may contribute to the definition of diagnoses and treatment plans. Root canal infections may lead to reactional osteogenesis in the MS. High-resolution CBCT images may reveal changes that go unnoticed when using conventional imaging. Findings may help define initial diagnoses and therapeutic plans, but only histopathology provides a definitive diagnosis. Surgical enucleation of the periapical lesion is recommended if nonsurgical root canal treatment fails to control apical periodontitis.
authors.affiliation: Department of Stomatology Sciences, Federal University of Goiás, Goiânia, Goiás Brazil. Electronic address: estrela3@terra.com.br.
authors.forename: Carlos
authors.initials: C
authors.lastname: Estrela
authors.affiliation: Department of Stomatology Sciences, Federal University of Goiás, Goiânia, Goiás Brazil.
authors.forename: Olavo César Lyra
authors.initials: OC
authors.lastname: Porto
authors.affiliation: Department of Stomatology Sciences, Federal University of Goiás, Goiânia, Goiás Brazil.
authors.forename: Nádia Lago
authors.initials: NL
authors.lastname: Costa
authors.affiliation: Department of Stomatology Sciences, Federal University of Goiás, Goiânia, Goiás Brazil.
authors.forename: Marcel da Silva
authors.initials: Mda S
authors.lastname: Garrote
authors.affiliation: Department of Stomatology Sciences, Federal University of Goiás, Goiânia, Goiás Brazil.
authors.forename: Daniel Almeida
authors.initials: DA
authors.lastname: Decurcio
authors.affiliation: Department of Oral Sciences, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
authors.forename: Mike R
authors.initials: MR
authors.lastname: Bueno
authors.affiliation: Department of Stomatology Sciences, Federal University of Goiás, Goiânia, Goiás Brazil.
authors.forename: Brunno Santos de Freitas
authors.initials: BS
authors.lastname: Silva
mesh_terms: D000328:Adult; D000368:Aged; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008443:Maxillary Sinus / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D008875:Middle Aged; D010012:Osteogenesis; D010485:Periapical Periodontitis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D012390:Root Canal Therapy / Q000009:adverse effects*
keywords: Apical periodontitis; cone-beam computed tomographic imaging; maxillary sinus; radiopaque lesion; reactional osteogenesis, root canal infection