title: Bilateral subpontic osseous hyperplasia. A case report.
abstract: A case of osseous hyperplasia under the pontics of fixed partial dentures in right and left mandibular first molar regions is presented. Radiographs showed hemispherical radio-opacities on the alveolar ridges. Histologic examination revealed the lesions were composed of a dense mass of mature bone with well-developed lamellae and haversian systems, viable osteocytes in lacunae and a few marrow spaces filled with loose fibrous connective tissue. The review of the literature showed osseous hyperplasia under the pontic of a fixed partial denture has been seen only in the mandibular molar or premolar regions, but no conclusion about its etiology was made.
authors.affiliation: Department of Oral Pathology, School of Dentistry, Iwate Medical University, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Takeda
authors.forename: M
authors.initials: M
authors.lastname: Itagaki
authors.forename: K
authors.initials: K
authors.lastname: Ishibashi
mesh_terms: D000328:Adult; D001862:Bone Resorption / Q000209:etiology* / Q000473:pathology; D003830:Denture, Partial, Fixed / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006965:Hyperplasia; D008334:Mandible / Q000473:pathology*; D008336:Mandibular Diseases / Q000209:etiology* / Q000473:pathology