Prevest Denpro Oratemp C&B

• Excellent strength and low wear for durable temporaries.
• Superior Surface details.
• 1:1 Volume ratio for an even flow and improved handling properties.
• Low shrinkage and low curing temperature.
• Can be easily repaired with flowable composite.
• Extremely Polishable and colour stable.

Prevest Oratemp C & B is a resin based composite provisional material used to fabricate temporary crowns, bridges inlays and onlays as well as long term temporaries. The 1:1 self-cured automix delivery version is easy to work with and provides exceptional strength, flexibility and abrasion resistance.

Indications

• Fabrication of temporary crowns, bridges, inlays, onlays and veneers.
• Fabrication of long-lasting temporary restorations.
• Lining material for prefabricated temporary crowns made of composite.

Technical Data :

• Working Time : 1 -1:20 sec
• Setting Time : 2 - 2:30 sec
• Compressive Strenght : 300 Mpa
• Flexural Strength : 100 Mpa

Composition :

• Ethoxylated Bisphenol A Dimethacrylate,
• Triethylene Glycol Dimethacrylate,
• Silanated Barium Glass Powder,
• Benzoyl Peroxide,
• Dihydroxy Ethyl p Toluene,
• 2- Dimethylaminoethyl Methacrylate,
• Amorphous Silica,
• BHT,
• Pigment.

• 1 x 67 gm Base/catalyst paste Cartridge (1:1 Compatible)
• 16 x Applicator tips
• 1 x Instruction manual

Preparatory Work :

• Take an alginate, silicone, or polyether impression from the intact row of teeth. Instead of an impression, a laboratory-made vacuum-formed template or, for single crowns, a preformed crown can be used for shaping.
• To enhance the strength of the temporary restoration, remove interproximal grooves in the impression. If required due to tight spacing conditions, enlarge the relevant sites by cutting.
• For easy replacement in the mouth, relieve undercuts.
• With missing teeth or gaps in the molar area, cut a groove into the impression to produce a stable, bar-shaped connection in the temporary restoration.

Initial Dosing :

• Remove and discard the cartridge lid.
• Under no circumstances should the cartridge lid be used to reseal the cartridge as this could result in the inclusion of air bubbles.
• Check whether both cartridge openings are free from obstruction and remove obstructing material, if any, with a suitable instrument.
• Before a mixing tip is applied for the first time, squeeze paste out onto a mixing pad until the base and catalyst pastes are at the same level.
• Discard the paste which has been squeezed out.

Application :

• It takes the material a certain amount of time to emerge from the newly attached mixing tip.
• The flow of material is interrupted as soon as the pressure on the handle is reduced.
• Material that has set inside the mixing tip should not be extruded by force, as this may damage both the cartridge and the mixing tip.
• Core build-ups which are fabricated using composites, compomers, or resin modified glasionomer cements must be sealed off before the application of OraTemp C&B e.g., using Vaseline.
• First, install a new mixing tip.
• Prior to each application, extrude a small (pea-sized) amount of paste from the mixing tip onto a mixing pad and discard this material.
• Subsequently load the dried impression or vacuum-formed template in the relevant spaces from the bottom up. *Reposition the impression or vacuum-formed template in the mouth/on the model.
• The material attains a hard-elastic consistency within 1 min 40 sec after the onset of mixing. The material and the impression or vacuum-formed template must be removed from the mouth/model within 2 min 50 sec after the onset of mixing.
• Check the setting process by observing the excess material in the mouth or on the matrix/model.
• Keep the filled mixing tip on the cartridge to serve as a closure until the next use.

Finishing :

• Completely remove the oxygen inhibition layer using alcohol (e.g., ethanol) once the material is completely cured (not earlier than 5 minutes after the onset of mixing).
• Polish if desired, e.g., with Sof-Lex™ polishing disks.
• After the product has cured completely, remove any residues.
• If necessary, finish and polish the temporary restoration using fine carbide burs.
• Do not breathe polishing dust.
• Use mouth protective device, safety glasses and aspiration.

Cementation :

• Insert the temporary restoration with a commercial temporary cement, OraTemp NE.
• Eugenol containing cements may impair the setting of composite luting cements to be used at a later time in the final luting step!
• If a composite cement is to be used for the final luting step, seat the temporary restoration with a eugenol-free cement.
• After cementation thoroughly examine and explore the sulcus and surrounding dentition.
• Remove any residuals of the temporary material or cement from the mouth.