What instrument packs a retraction cord?
For inter-proximal cord packing, a periodontal probe can be used as gingival tissues are thin and delicate in this area. For thin gingival biotype, a flat plastic instrument can work well for placing the retraction cord without damaging the delicate …
What is a cord packer used for?
Cord packers are dental instruments used to pack gingival retraction cord into the sulcus. The cord packers with round, nonserrated working ends are used for atraumatic cord placement; serrated cord packers should only be used with braided cord.
What is cord retraction?
Retraction cords are cords, that are placed in the gingival sulcus so that dentists can get a good impression of the teeth and the surrounding tissues. When dentists prepare the teeth for a fixed restoration such as a crown, bridge or even veneers, they have to remove a part of the dental tissue.
How do I know what size retraction cord I need?
First of all, there is no one size fits all. Evaluate the health of the gingiva and the depth of the sulcus. Select a diameter that looks like it will fit. If there is minimal sulcus depth, it will only accommodate a single cord technique and probably only a thin cord.
What is retraction cord made of?
Hemodent Gingival Retraction Cord is made of cotton and impregnated with astrinigent, a buffered solution of 10 percent aluminum chloride. Hemodent cord is available in twisted and braided styles and comes in medium-thin (#9) and medium-heavy (#3) weights.
What is a triple tray?
The triple tray technique is a very efficient method for taking impressions. The impression taken prior to preparing the teeth can be utilized to fabricate both the temporary restoration and then the final impression, which includes the opposing occlusion.
What is a spoon excavator?
Spoon Excavator is used for cutting and removing the carious dentine of a decayed tooth. A spoon excavator is used to clean out and shape a carious cavity before filling it.
How long should a retraction cord be?
The cords are placed into the gingival sulcus to physically retract the tissues and leave the prepared tooth margin exposed to the impression material. Retraction cords must stay in place for a prescribed length of time (10 minutes on average) to be effective.
Do you remove retraction cord before impression?
The authors preference in cord is Ultrapak (Fig. A single cord is carefully placed in the sulcus, left in situ for a period of time usually no less than five minutes and finally removed before making the impression. Once the cord is removed, gingival displacement of about the width of the cord used is achieved.
How long is the retraction cord left in place?
How does a gingival retraction cord Packer work?
Gingival retraction cords help you do that by gently pushing the gums out of the way. You use a gingival cord packer to place the cord around the tooth for a better working view. Our cord packing tools let you neatly place gingival cord in a patient’s gums.
Which is the best way to pack UltraPAK cord?
These specially designed packers ease the packing of Ultrapak ™ knitted cord. Their thin edges and fine serrations sink into the cord, preventing it from slipping off and reducing the risk of cutting the gingival attachment. 45° to handle: Our most popular packers, with heads at 45° to the handle and three packing sides.
What are the tips of a cord Packer?
– Tip shape: Our cord packers feature round, flat and thin tips. The right tip for the situation depends on the tooth location. Anterior teeth tend to have thinner and tighter tissue that responds well to thinner and flatter instruments. Rounded instruments work well for the looser tissue around posterior teeth.
Can a circular Packer be used on a prep?
Circular packing of the prep can be completed without the need to flip the instrument end to end. Use the small packer on lower anteriors and upper lateral incisors.