VicCalor bulk thermoviscous composite combines flowability and sculptability

Packable bulk-fill composites are suitable for the reliable filling of large posterior cavities as part of secondary treatments. These materials cannot easily be used to fill very deep and narrow cavities that have undergone defect-oriented and minimally invasive preparation because perfect adaptation to the cavity floor and walls is often difficult to achieve. The use of flowable composites as base materials is a good alternative for this type of deep, narrow cavity, but they still need to be coated with a covering layer of packable composite. This two-phase process makes placing a restoration a time-consuming task.

New VisCalor bulk from VOCO follows a completely new approach: the material combines the flowability of a flowable composite during application with the sculptability of a packable composite. VisCalor bulk is therefore a material that can be used for both large and narrow cavities, without having to compromise in regard to adaptation or strength.

VisCalor bulk is warmed using a preheating device for composites and due to this, it becomes less viscous, allowing for application similar to that of a flowable material. The material flows optimally onto cavity walls and undercut regions.

The material quickly cools back down to body temperature and can immediately be sculpted just like a packable composite.

As a result, VisCalor bulk offers the benefits of both a flowable composite and a packable composite during placement. This allows for efficient, single-phase restorations without multiple working steps for base filling, increments or covering layers.

VisCalor bulk is the world's first material to use thermo-viscous-technology. The special surface treatment on the fillers and a coordinated resin matrix help to significantly extend the normal viscosity-reduction effect when the temperature is increased. This results in a material that acquires the consistency of a flowable material when heated up in a standard 68°C composite warmer, or to full benefit in the new VisCalor Dispenser, but that is sculptable like a packable composite at body temperature.

Low shrinkage

When placed in 4mm increments in Class I cavities, the C-factor becomes unfavourable. A very low shrinkage of 1.44% by volume and a shrinkage stress of only 4.6 MPa are ideal properties for filling these cavities.

Flexural strength

The flexural strength measurements also prove that VisCalor bulk is the ideal material. The material has a flexural strength of 164 MPa and its compressive strength of 335 MPa also indicates impressive longevity. Restorations performed with VisCalor bulk can therefore withstand day-to-day stresses for a long time.

4mm with no covering layers

With VisCalor bulk, you can place single-phase bulk fillings without a separate covering layer, base fill or base. When applied at the bottom of the cavity, the material flows onto all regions like a flowable material to create a bubble-free monoblock restoration that then needs only to be finished and cured. The very impressive physical parameters mean that there is no need to apply a covering layer. The narrow, flexible cannula allows for direct application even in difficult-to-access areas and narrow cavities.

Since discolouring substances can also penetrate into the restoration when water is absorbed, VisCalor bulk also shows its strengths with very low water absorption for restorations that are reliable and aesthetically pleasing over the long term.

Warming and dispensing in one device

With the VisCalor Dispenser, composite capsules can not only be warmed up, but they can also be applied immediately afterwards without the need to change devices and their temperature can be maintained for a certain period of time (up to 150 seconds). The composite is warmed up very quickly (in around 30 seconds) using near-infrared technology.

The VisCalor Dispenser has two warming programmes: one for VisCalor bulk and one for all other VOCO composites.

The VisCalor Dispenser offers:

• Effective handling - rapid warming and immediate application in one device;
• Homogeneous warming thanks to near-infrared technology;
• Handy design and proven shape for filling molar cavities; and
• Better adaptation of composites to cavity walls thanks to silkier consistency.

Indications

• Class I and II posterior restorations
• Base in class I and II cavities
• Class V restorations
• Locking, splinting of loose teeth
• Repairing veneers, enamel defects and temporary C&B-materials
• Extended fissure sealing
• Restoration of deciduous teeth
• Core build-up

Advantages

• Unique and innovative - Warming of the material makes it flowable for the application and then sculptable immediately afterwards (thanks to thermo-viscous-technology)
• High-quality application - Optimal flowing to margins and undercut regions
• Time-saving - No covering layers required
• Simple handling - 4 mm bulk fill and bubble-free application with slender cannula

Four shades

The choice is yours:

• Universal shade: Optimal adaptation to the surrounding tooth substance, with a curing time of just 10 seconds (at 1,000 mW/cm²).
• Individual tooth shades: Three additional shades - A1, A2 and A3 - are available for aesthetically pleasing restorations. Curing time: 20 seconds (at 1,000 mW/cm²).