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March 21, 2012

Telio is a comprehensive, fully integrated product system for temporary restorations designed for dentists, CAD/CAM users and dental technicians. All Telio materials are well suited for the manufacture of conventional and implant-borne temporaries. The materials are compatible with each other and their shades are optimally coordinated.

Telio is a comprehensive, fully integrated product system for temporary restorations designed for dentists, CAD/CAM users and dental technicians. All Telio materials are well suited for the manufacture of conventional and implant-borne temporaries. The materials are compatible with each other and their shades are optimally coordinated.

Part of the Telio family, Telio Lab is a PMMA-based two-component powder/liquid system for cold polymerization in A-D shades. It is used for fabricating temporary crowns and bridges.
Telio Lab exhibits optimal polishing properties, resulting in a smooth surface. Stains and/or layering materials can be used to apply final esthetic optimizations. It can be used in conjunction with the casting technique, the injection technique and the fabrication of temporary veneers in conjunction with artificial teeth.

The technique described here represents a step-by-step for fabricating temporaries using Telio Lab and the casting technique.

Technique

01 The tooth shape and function are designed with the help of a wax-up (Fig. A) and replicated with a silicone key (Fig. B). The restoration design is key to the temporary’s success.

02 Remove the silicone key from the model once it is set and clean off any wax residue from the model. Block out undercuts and cuts between model segments.

03 Immerse the model in water for 5 minutes. Then, apply two layers of Separating Fluid. After each layer, wait until the surface is no longer shiny.

04 Pour the desired amount of Telio Lab Cold Liquid into a clear mixing beaker. Dispense the same amount of powder into a separate beaker. Add the powder to the Cold Liquid. Use a modeling spatula to mix without creating air bubbles.

05 Cover the beaker and allow a dough time of about 2 minutes (Fig. C). Fill the silicone key with Telio Lab Dentin without causing any air bubbles (Fig. D).

06 Apply Telio Lab Dentin on the isolated model avoiding air bubbles (Fig. E).

07 Place the silicone key on the model in the correct position (Fig. F).

08 Once Telio Lab has reached its plastic phase, polymerize the material under pressure in a water bath for 15 minutes at a pressure of 2-6 bar/29-87 psi and a temperature of 104-122°C.

09 After polymerization is complete and the restoration has been removed from the silicone key, reduce the Telio Lab restoration’s incisal area with cross-cut burs.

10 Check the reduction (cut-back) with the silicone key (Fig. G).

11 Blast the surface with aluminum oxide at 2 bar/ 20 psi pressure or roughen with a bur.

12 Apply Telio Lab Cold Liquid on the clean surface. Then, condition the surface with SR Composiv to ensure a sound bond between the restoration and Telio Stains (Fig. H). The layer thickness of SR Composiv must be between 0.2 and 0.5 mm. Process for 3 minutes.

13 Cure the material in a light-polymerization device and then individualize the incisal area using Telio Stains (Fig. I).

14 Use a sponge to remove the inhibition layer (Fig. J).

15 Replace the reduced and stained restoration in the silicone key and position it on the wetted and isolated model. Repeat the casting process using Telio Lab incisal materials.

16 Use cross-cut tungsten carbide burs to finish the restorations (Fig. K). Avoid overheating the materials.

17 The restoration should be tried in on the die and carefully finished. Check proximal and occlusal contact points and make sure the minimum thicknesses are maintained even after minor adjustments.

18 Next, polish. When polishing, pay special attention to crown margins, interdental areas, occlusal surfaces and the basal rest area of pontics.

19 Polish to a high gloss with a goat hair brush, cotton or leather buffing wheels as well as Universal Polishing Paste (Fig. L).

20 Use low speed and limited pressure for high-gloss polishing. Adjust the pressure with the handpiece, not the polishing motor.

21 To optimally polish interdental areas and occlusal surfaces, try modifying the goat hair brushes to become star shaped so only the desired areas can be polished.

22 Depending on the type of high gloss desired, leather buffing wheels can be used to achieve a high shine, while cotton buffs are used to achieve a lower degree of lustre (Fig. M).

23 The finished restoration (Fig. N).