Achieving Optimal Results with Take 1® Advanced™
One of the main concerns with any laboratory restoration is fit and marginal integrity. Clinicians must select a conscientious laboratory and a predictable impression material.
Kerr Corporation has taken an already successful impression material (Take 1® ) and improved on several important features to introduce Take 1® Advanced™ —a vinyl polysiloxane material with added patented surfactants and a hydrophilic monomer that break surface tension and easily displace saliva and blood. These improvements create greater detail and reduce voids or bubbles. This strong flexible impression material stretches around undercuts without tearing or distorting.
Taking any impression requires tissue management as well as coordinating the timing of placing the tray and wash materials. Tissue management can be achieved by several means. Retraction cord, whether single or double, can be effective as long as the clinician is careful with the gingival tissue. There are also soft-tissue lasers and electrosurges that can remove tissue as well as control bleeding. The third option is Expasyl™ temporary gingival retraction system, a paste that has aluminum chloride and clay. Any of the three or a combinationof them is critical to enhancing the predictability of the impression taken.
A 36-year-old man had broken one of his four front veneers (Figure 1). In addition to replacing the broken veneer, he also wanted to change the shade of the veneers. The four veneers, teeth Nos. 7 through 10, were removed (Figure 2). To assure there was no tissue involvement, Expasyl gingival retraction system was placed in the gingival sulcus and allowed to set for 3 minutes without any salivary contamination (Figure 3).
The Expasyl was rinsed off thoroughly. Simultaneously, heavy-body tray material was placed in the tray while the low-viscosity wash was placed around the four prepared teeth. The timing while dispensing the heavy-body and the low-viscosity materials is critical with any impression system. With the outstanding features of Take 1 Advanced, a very clean, distortion-free impression can be taken that will give excellent dimensional stability for multiple pours of the impression, if needed (Figure 4). The prepared teeth were cleaned,rinsed off, and lightly air-dried.
The provisional material, Fill-In™ , was dispensed in a putty matrix from the wax-up to assure correct contours and length of the four anterior teeth. Then, the matrix was placed on the prepared teeth and allowed to set for approximately 1 minute. The matrix was removed carefully, leaving the Fill-In on the prepared teeth. The provisionals were contoured and polished with the KerrHawe disk, cups, and points (Figure 5). The patient was allowed to view the Fill-In provisionals and make any necessary corrections before the porcelain restorations were fabricated.
A Win-Win Combination
With the outstanding features and progressive technology of Take 1® Advanced™, the clinician can be assured of a laboratory restoration that will have fine marginal detail and a secure fit overall, providingthe clinician and the patient a win-win combination.
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