Cementation

Patent No. US DA 439,667 S

Cementation

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Cementation Utilizing the Contour Wedge

Most indirect restorations fail at the margins. At the seating appointment preventing cement contamination from gingival seepage is one way to insure longevity of the indirect.

The Contour Wedge is unique in that it will not only compress the gingiva away from the margins, but it will not interfere with seating of the indirect. In most cases the indirect can be fully seated before the Contour Wedge is removed. The race to seat an indirect before blood creeps up onto the margins is over. The field can be kept isolated and clean throughout the cementation process.

If the gingival papilla becomes damaged by use of the Contour Wedge, it will heal. The long term health of the papilla is dependent on other factors such as marginal fit, a properly contoured restoration, home care, and respect for the biologic width.

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	A	Tooth # 15 prepared and ready for cementation of a heat tempered onlay. Because the mesial portion of the prep is subgingival, there is a risk of moisture contamination of the resin cement in an area that is critical to obtain and excellent seal.
	B	Contour Wedge is placed between teeth #'s 14 & 15. The interproximal gingiva is compressed, and removed from the mesial margin. Also note that the gingiva is blanched and not weeping blood or sulcular fluids.
	C	Onlay is pressed to place. Most times the Contour Wedge will not prevent full seating of the onlay. If the Contour Wedge does prevent full seating, the wedge is withdrawn at the very last moment as the onlay is pressed to place. This will prevent any contamination of the cement.
	D	Final restoration of tooth # 15.

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	A	Tooth #8 ready for cementation... Note that gingival papilla at the distal is bleeding.
	B	Contour Wedge is placed at the distal. The papilla is compressed and moved away from the tooth margin, and there is no bleeding.
	C	Crown is seated with the Contour Wedge left in place. The Contour Wedge usually does not interfere with the full seat of the crown. If it does interfere, the Contour Wedge need only be removed at the final moment of the full seat of the crown. This will prevent any contamination of the cement by gingival seepage.
	D	Crown cemented to place.