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Home » Techniques » Provisional Restoration

Provisional Restoration Using Trim Temporary Crown & Bridge Resins

To achieve the best results follow these recommended techniques.

 TECHNIQUE

    a) Before making tooth preparations, take an alginate impression (using the company's Supergel impression material), eliminate any air pockets, and with a curved shears, cut the interproximal areas from the impression. Moisten the impression and set it aside in a plastic bag for later use.
 
    b) After preparing the teeth and taking impressions for the laboratory, place 7-ml of Trim liquid into a mixing cup and add powder (13-ml by volume) in the appropriate shade.

Note: The temperature of the powder and liquid mix should be 72°- 75°'F. Spatulate to a creamy, honey-like consistency, which is usually achieved within one minute.

 
    c) Flow the resin mix into the desired areas of the alginate impression and allow it to cure until it reaches a putty-like consistency and no longer shines. Reset the impression in the mouth.

Note: Elapsed time for Stage One should be three minutes from mix to placement in the mouth.

 
    d) After approximately two minutes in the mouth, the Stage Two cure begins, and the resin achieves a rubbery rebound. (This highly elastic consistency simplifies removal from undercuts.)

Note: Do not allow the material to remain in the mouth longer than three minutes; it must not set in the mouth. The Trim bridge usually remains in place on the teeth. Have the patient close and maintain occlusion for an additional 30 seconds.

 
    e) Carefully tease the restoration off the teeth. While still in the rubbery stage, place the bridge in room temperature water (72°- 75°F) inside a pressure pot (pressurize to 30 psi) for 2-1/2 to five minutes. The result is a dense, void-free restoration of optimal hardness and shade color.

Note: As an alternative, the restoration can be left to self-cure for 15 minutes. Cementation can be achieved with any temporary ZOE cement.

 
    f)Using the company's multifluted acrylic burs, trim and contour the hardened restoration to a smooth finish.

Note: The burs assist the clinician in ob-taining optimal fit, style, and bulk reduction of excess acrylic resin.

 

 NOTE

Apply one or two coats of the company's Glaze material to add a natural luster to the provisional.

Glaze also can be used in conjunction with indelible ink to simplify denture identification.

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