浮き上りを防止するための新しい鋳造冠

概要

論文の詳細を見る
It is practically difficult to seat the full cast crown satisfactorily on the prepared tooth during cementation. Two clinical technics have been adopted so far to aid better seating of the crown restoration : (1) internal surface relief and (2) perforation of the crown to provide a vent for the cement to escape. The present article describes a newly designed crown restoration to minimize the elevation of the crown at the margin. It consists of an internal crown covering the axial surface up to the finishing line and an ordinary, external crown over the internal one. On cementation of the internal crown, the cement can easily escape toward the open occlusal plane, and the resultant average cement thickness between the internal crown and the tooth becomes as thin as 4.8μm at the margin. It indicates that the adequate application of such an internal crown would allow the cast crown restoration to seat more completely and reduce the influence on the marginal gingiva.
九州歯科学会の論文
1982-06-25