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Biomedical subjects

T Ooshima

Publications and source records attributed to T Ooshima.

132 records · Page 8Linked to original sources
PubMedDate not supplied

Unusual multiple natal teeth: case report.

An 18-month-old Japanese boy with multiple natal teeth was examined. Fourteen hard structures were reported to have been present at birth at the regions of the anterior teeth and first primary molars in both jaws. The structures were excessively mobile and 11 of the structures had exfoliated successively since 5 months of age. The three structures remaining at the regions of the first primary molars had bonelike appearance and color, and were smaller in overall dimension than the corresponding primary teeth. Radiographic examinations showed that the structures had neither roots nor pulp chambers and their radiopacity corresponded to that of mandibular bone. Furthermore, there were no permanent successors except for the upper central incisors and left lateral incisor at the regions where the structures were situated. Histological examinations revealed that the specimens consisted of dentin with tubular structure, osteodentin-like structure, and cementumlike structure.

Anodontia↗
PubMedDate not supplied

Oral manifestations of Ehlers-Danlos syndrome type VII: histological examination of a primary tooth.

A two-year, 2-month old girl with Ehlers-Danlos syndrome Type VII is described. The patient presented with bleeding after tooth brushing, and exhibited microdontia and yellow discoloration of teeth. She had carious teeth, but did not exhibit periodontal disease, poor wound healing after extraction, radiographic evidences of pulp stones, or malformed roots. Microscopic examination of a decalcified section of an extracted tooth stained with H & E demonstrated some inclusions in the dentin, around which collagen was either missing or scanty, as confirmed by counterstaining with van Gieson's solution. The sections of pulp stained with van Gieson's solution showed an abnormal pattern of fibrous tissue. Furthermore, the radiopacity of the dentin of this patient was significantly higher than that of the control dentin.

Child, Preschool↗
PubMedDate not supplied

Oligodontia in the primary dentition with permanent successors: report of case.

A case of oligodontia in the primary dentition with corresponding permanent successors is described. A two-year-old Japanese boy was admitted to the pedodontic clinic with the chief complaint of congenitally missing primary teeth. The boy appeared to be normally developed and was in good physical health. There was no history of trauma, extraction, or exfoliation of primary teeth. Clinical examination showed that eight anterior teeth were missing. Also, a canine and three first molars were much smaller in size and were malformed. However, radiographic examination at age four years, ten months showed that all of the permanent tooth germs--including the corresponding successors of congenitally missing primary teeth--were evident.

Anodontia↗
PubMedDate not supplied

Eruption of tooth-like structure following the exfoliation of natal tooth: report of case.

Natal teeth, defined as those that are the mouth at birth, are rare: one case in 2,000 to 3,500 births. In this case, that of a nine-month-old Japanese boy, it is reasonable to infer that the tooth-like structure, described as a hard-tissue conglomerate with a bone-like appearance, originated in the remnant of the dental papilla and Hertwig's sheath of the natal tooth. Both dentin and root formation were thereby induced.

Dental Enamel Hypoplasia↗