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Results for “Tooth, Unerupted”

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At least 163 records · Page 9Linked to original sources
PubMed1989

Resorption of a first permanent molar.

A case is presented of an unerupted maxillary second premolar causing the severe resorption of a first molar tooth. This case underlines the need for adequate radiographic evidence before recommending the extraction of teeth for the relief of crowding.

Bicuspid↗
PubMed1989

Magnets and orthodontics.

The first part of this paper is a literature review of magnets and their uses in orthodontics. The biological safety of magnets is considered and a report is given of experiments carried out on rat osteosarcoma cell line UMR-106. The second part of the paper describes a case where neodynium-iron-boron magnets were used to assist eruption of an unerupted, vertically impacted upper right canine. Previously, space was available for this tooth, but it failed to show signs of eruption. Following surgical attachment of a magnet, and the use of a second magnet attached to an upper removable appliance, rapid eruption occurred producing a favourable position for bonding.

Animals↗
PubMed2000

Treatment of an "ankylosed" upper central incisor in the mixed dentition.

A ten-year-old boy presented with an unerupted upper right central incisor (UR1). An OPG radiograph showed a supernumerary tooth lying over its crown, preventing its eruption. Standard orthodontic treatment involving removal of the supernumerary tooth, attaching a gold chain to the UR1 and treatment with fixed orthodontic appliances failed to bring the tooth down, until it was found that tough fibrous gingival tissue entwined in the gold chain had "ankylosed" the tooth. Once this tissue had been removed and the wound packed open, the tooth was brought down successfully into occlusion.

Ankylosis↗
PubMed1991

Resorption of the crown of an unerupted permanent molar.

This case report describes an unusual phenomenon where resorption occurred in the crown of an unerupted permanent molar. It was an incidental radiological finding. After eruption the tooth was extracted. Histological examination revealed resorption of enamel and dentine, and partial replacement by calcific material. The possible aetiology of the condition is discussed.

Child↗