Method and device for the retraction and hemostasis of tissue during crown and bridge procedures
AssigneeCentrix, Inc.
InventorWilliam B. Dragan
Life of this patent
Estimating the term…
Abstract
A method and a device for effecting the cordless retraction of the gingival sulcus tissue prior to the taking of an impression of a tooth for making a crown or bridge which is attained by controlling any bleeding in the gingival sulcus area, and utilizing a dental dam preferably formed of a sponge or foam like material to contain an astringent fortified silicone impression material embedded about the prepared tooth, and using the patient's biting force to apply the necessary pressure onto the dam until the silicone impression material sets and adheres to the dam to enhance easy removal of the set impression material from the tooth. The dam is formed to accommodate either the posterior teeth or the anterior teeth.
Claims14
A non-cord method of retracting gum tissue in preparation for taking an impression comprising:
- (a) preparing a tooth for restoration;
- (b) controlling any bleeding occurring with respect to any cut tissue in the gingival sulcus area;
- (c) placing an amount of an impression material into the groove of a dental dam made of a porous material;
- (d) covering the prepared tooth with a layer of said impression material;
- (e) placing the trough of the dental dam filled with the impression material onto the prepared tooth covered with the impression material;
- (f) requiring the patient to apply a biting pressure onto the dental dam;
- (g) permitting the impression material to penetrate the porous material of the dental dam;
- (h) maintaining the biting pressure on the dental dam until the impression material has set;
- and
- (i) removing the dental dam with the impression material attached from within the patient's mouth.
A non-cord method of retracting gum tissue for taking a tooth impression comprising:
- (a) controlling any bleeding occurring with respect to any cut tissue in the gingival sulcus area;
- (b) covering the prepared tooth with a generous amount of impression material;
- (c) placing the groove of a dental dam made of a porous material onto the prepared tooth covered with the impression material;
- (d) requiring the patient to apply a biting pressure onto the dental dam;
- (e) permitting the impression material to penetrate the porous material of the dental dam;
- (f) maintaining the biting pressure on the dental dam until the impression material has set;
- (g) removing the dental dam with the impression material attached from within the patient's mouth.
A non-cord method of retracting gum tissue in preparation for taking a tooth impression comprising:
- (a) placing an amount of an impression material into the groove of a dental dam made of a porous material;
- (b) covering the prepared tooth with a layer of said impression material;
- (c) placing the trough of the dental dam filled with the impression material onto the prepared tooth covered with said impression material;
- (d) requiring the patient to apply a biting pressure onto dental dam;
- (e) permitting the impression material to penetrate the porous material of the dental dam;
- (f) maintaining the biting pressure on the dental dam until the impression material has set;
- (g) removing the dental dam with the impression material attached from within the patient's mouth.
A device for effecting the cordless retraction of gum tissue comprising:
- a block of a porous cellular material of a size to receive a prepared tooth;
- said block having a groove extending co-extensively thereof to form a dental dam;
- said groove being adapted to receive the prepared tooth;
- and
- an initially flowable material placed within said groove of said block of the porous cellular material, whereby the initially flowable material penetrates the pores of the porous cellular material so that upon setting adheres to the block of the porous cellular material.
Dependencies are inferred from the claim text.