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Indirect and Direct Restorative Protocols - Caulk

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››“Data transfer is critical to the fabrication of any restoration;<br />

use of a reliable impression material like Aquasil Ultra Smart<br />

Wetting allows development of models with precise<br />

margins devoid of undercuts <strong>and</strong> voids.”<br />

Nelson Rego, CDT<br />

Laboratory Technician <strong>and</strong> Owner, Rego Smiles, Santa Fe Springs, CA.<br />

Figure 5. A repeatable impression-making technique <strong>and</strong> Aquasil Ultra<br />

(DENTSPLY <strong>Caulk</strong>, Milford, DE) facilitate the fabrication of accurate<br />

restorations in the dental laboratory.<br />

Figure 6. Postoperative appearance demonstrates harmonious integration<br />

that was only possible due to precise data transfer <strong>and</strong> thorough<br />

communication with the laboratory.<br />

››Achieving Predictable Impression Capture<br />

■■<br />

■■<br />

■■<br />

■■<br />

■■<br />

Ensure proper tissue retraction <strong>and</strong> hemostasis.<br />

Properly dry the prepared tooth structures prior<br />

to impression capture (but do not desiccate).<br />

Apply B4 ® Pre-Impression Surface Optimizer to the<br />

prepared tooth, then air-thin, taking care not<br />

to rinse or dry the applied material.<br />

Fully load Aquasil Ultra Smart Wetting ® Impression<br />

Material prior to syringing Aquasil Ultra wash<br />

material around the final preparations.<br />

Begin expressing Aquasil Ultra wash material<br />

at the tissue margin <strong>and</strong> then cover the entire<br />

tooth surface.<br />

■■<br />

■■<br />

■■<br />

■■<br />

When coverage of the marginal area is complete,<br />

proceed coronally <strong>and</strong> circumferentially, keeping<br />

the syringe tip in the material as it is expressed.<br />

Align the First Bite ® impression tray parallel to the<br />

occlusal plane for proper vertical seating.<br />

Seat the impression tray using firm, steady pressure<br />

until Aquasil Ultra Smart Wetting ® Impression<br />

Material overflows from the tray within approximately<br />

1 minute from the beginning of syringing.<br />

Verify proper marginal detail prior to<br />

forwarding to the laboratory.<br />

adequate dimensional stability to withst<strong>and</strong> the subsequent<br />

transfer to the laboratory prior to model fabrication. This<br />

required dimensional stability, a defining characteristic of<br />

Aquasil Ultra, will also influence the technician’s ability to<br />

produce multiple refractory models following delayed pouring.<br />

Additional occlusal data can be sent to the laboratory in the<br />

form of a rigid bite registration (eg, Regisil® Rigid, DENTSPLY<br />

<strong>Caulk</strong>, Milford, DE) (Figure 4). To ensure that the occlusal<br />

data being sent is clearly communicated, excess material that<br />

extends onto the soft tissue region or to the height of the tooth<br />

contour should be removed using a scalpel blade or sharp scissors<br />

when seating the registration onto the model.<br />

Impression materials <strong>and</strong> techniques can vary depending<br />

on the type of restoration or clinical environment. Thus, it is<br />

beneficial that materials such as Aquasil Ultra <strong>and</strong> repeatable<br />

impression-making techniques enable dental professionals to<br />

deliver a well-integrated restoration for either the anterior or<br />

posterior region (Figures 5 <strong>and</strong> 6). n<br />

13

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