| 摘要 |
This invention relates to a dental appliance ( 10 ) for displacing gingival tissue during a restoration procedure. The dental appliance ( 10 ) comprises a flexible polyurethane foam pad having a central opening ( 12 ) extending through the pad. The central opening ( 12 ) is configured to receive a tooth therethrough, and the foam pad has a size, shape and flexibility sufficient to deflect gingival crest surrounding the tooth. The dental appliance ( 10 ) can be made from an open celled foam that is effective to retain a medicament for release onto the gingival tissue The medicament can be combined with an excipient to form a gelatinized compound impregnated into the pad. A temporary crown can be used to push the dental appliance ( 10 ) over a prepared tooth and onto the gingival crest surrounding the tooth, such that the entire gingival crest is simultaneously displaced.
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