Over recent years, Nano-technology is becoming ever more common as fillers using resin materials become continuously smaller. However, smaller fillers are not always making better performance in terms of strength, workability, aesthetics and compatibility with opposing dentition. It was successfully developed that TWiNY, our newly developed hybrid composite resin submicron filler primary particles, which combine to form a “Ceramics Cluster Filler” as a secondary particle with a larger surface. (Patented, Japan) TWiNY is mainly composed of Monomer, Ceramics Cluster Fillers and Spherical Nano-fillers. Ceramic Cluster Fillers, surface treated by coupling are mainly filled into the monomer matrix, and Nano-fillers are then filled into the remaining spaces. This improves mechanical properties and high stress resistance. Furthermore, ideal mixing ratio improves the workability of the hybrid composite resin.

Image of TWiNY material structure

Primary particles of 200~600 nanometers are combined to make secondary particles with various shapes. 
Ceramic Cluster Fillers are filled into the monomer matrix at a high density and spherical Nano-fillers are also added into remaining space.

Irregular Shaped Fillers

Ceramics Clustaaer Filler

As Ceramics Cluster Fillers have an uneven surface, they work just like retention beads and combine firmly with monomers. This uneven surface also works against cracks, because it scatters stress-strain and enhances wear resistance.

These tests evaluate the dental material in terms of how strong and how well it functions. All the test results achieved are far superior to the stipulated required values. This will give dental technicians and clinicians a good picture of what makes TWiNY so superior and superb.

Flexural Strength Testing

Vickers Hardness

Ceramics Cluster Technology makes it possible to achieve the highest flexural strength,and the flexibility of the material reduces the risk of fracture when high impact is applied, especially in posterior cases.

Breaking Energy (Stress-Strain Curve)

Impact Resistance

Flexural strength is determined by maximum stress. Breaking energy, which is obtained by maximum stress and strain, is affected by strength and flexibility. Glass and ceramics are very strong materials but will break as soon as they are subjected to a critical level of stress. However, TWiNY exhibits adequate strength even under such conditions, which means that the flexibility of TWiNY reduces risks of fracture when high impact is applied, especially in posterior cases.

Change in light transmission
before and after curing(0.8mm thickness)

Pictures of pellets before and after curing (0.8mm thick)

Change in light transmission before and after curing is very small, which makes it easier for technicians to layer.

Variety of color shades enables us reproduce natural tooth color

TWiNY is excellent in its physical properties; at the same time, it is highly esthetic product, enabling technicians to demonstrate their talents to full advantage. Whiter teeth are seen as desirable around the world today. Everybody seeks whiter color tone than the original natural teeth color. We have a wide range of white shade colors for aesthetic practice treatment. Gum shades are very useful for implant superstructure. Gum Shade is a characterizing item for reproducing gingival color or expressing the tranparency of gingival area and discolored gum. Internal-use Gum Stain products for blood vessels and other expressions are also available.

Clinical Case
Yamakita Dental Clinic [ 7 ⑥ 5 ]

Gum Shades

Whitening Shades

Gum Stain

Outstanding Workability

Optimal Consistency for shape preservation of internal dentine structure
Consistency is important factor for workability of body resin and shape preservation of internal dentine structure. Especially, internal structures such as the dentine core require optimal consistency to keep form. TWiNY exhibits such good shape preservation that the dentine edges even of bridges or connected teeth can maintain shape during working.
Technicians can work stress-free, as TWiNY paste does not stick to the spatula.

Pressuring

After pressure

Well shape preservation
This is the shape, 15min.
after body resin was applied.

Great Polishability

General irregular shaped fillers are difficult to polish because the remaining resin is softer than the fillers. So, as the dimension of filler particles gets bigger, it becomes more difficult to polish. However, TWiNY’s ceramics cluster fillers are grape-like in shape, consisting of smaller fillers, which makes them easier to polish than other irregularly-shaped fillers of the same dimensions.

Irregular Shaped Filler

Ceramics Cluster Filler

Support