OMNICHROMA
The Future of Composites – One shade fits all!
OMNICHROMA by Tokuyama Dental is a light-curing, radiopaque composite that offers the ultimate in colour matching. It can cover all classic VITA shades with only one colour. For the first time, colours are not created by the addition of pigments, but rather by deliberately induced structural colours combining with the reflected colour of the surrounding tooth. The OMNICHROMA phenomenon uses the Smart Chromatic Technology along with the spherical fillers from TOKUYAMA, which are manufactured according to the “cultured pearl principle”. The effect: A single composite for all colours. Uniquely natural and aesthetic. Uniquely smooth and shiny. Uniquely simple and time saving.
Indications
✔ Anterior and posterior areas
✔ Composite veneers
✔ Diastema closure
✔ Composite/ceramic repairs
Available colours
✔ Universal (A1-D4)
Numerous advantages: OMNICHROMA composite
✔ Perfect colour matching - eliminates the need for special colours
✔ Permanent availability of the right shade
✔ Eliminates the need for shade determination
✔ Simplifies stocking & Inventory Management
✔ Reduction in expiring material
✔ Excellent adaptativity
✔ Non-sticky
✔ Good polishability
✔ Remarkable glossiness
✔ Free from BisGMA and bisphenol A-related monomers
SEM images of the fillers
Colour through Light: Infinitely from A1 to D4 in a Single
Uniquely esthetic: Outstanding colour adaptation
Smart Chromatic Technology: precisely 0.00026 millimeter sized beads and the translucency of the cured composite ensure that the right tooth shade is always created from light.
The innovation breakthrough from TOKUYAMA’s Research
The phenomenon of colour adaptation in chameleons is the same as with OMNICHROMA: the light strikes a very specific structure in the sub-micro or nanometer range.
The decisive question was: which structure, in other words, which size and shape do the fillers need to have for the light to reflect real tooth shades optimally? In 2018, TOKUYAMA Research found the answer: the “Smart Chromatic Technology”. When light strikes small spherical fillers at exactly 0.26 µm the refraction and diffraction of the light generates the ideal red-yellow colour effect that is necessary to faithfully imitate the genuine tooth shade.
In contrast to conventional composites, OMNICHROMA is intended to achieve an extreme colour change after curing and is also very practical when modeling.
Unique Polish
The surface is decisive for polishability and optimal light reflection. With its mirror-smooth surfaces, TOKUYAMA’s Sub-Micro-Pearl-Technology provides a fast and long-lasting gloss. In the case of typical ground fillers, the light strikes extremely irregular surfaces that scatter the light diffusely and appear correspondingly matt or require a long and complex polish. The law of reflection “angle of incidence equals angle of reflection” is the basic prerequisite for the gloss effect and only works with very smooth surfaces: with mirrors, natural teeth and OMNICHROMA.
Superior polishability: 89 % gloss already after 30 sec.
Excellent abrasion properties
OMNICHROMA is a particularly abrasion-resistant composite, yet at the same time gentle on the antagonist due to its unique filler structure, which only offers a small surface area for abrasion.
OMNICHROMA: A composite with unique properties
- No sticking to instruments due to perfectly round fillers with smooth surfaces
- Good processing time
- White opaque colour shade is easy to process visibly
- Excellent adaptation to the cavity walls due to soft creamy consistency
- Free of Bis-GMA – for a significant reduction in the risk of allergies
- High resistance: due to good flexural strength and very high compressive strength
- Due to the perfect chameleon effect, time-consuming shade determinations are a thing of the past
- Always reorder, store and document only 1 product at a time
- Highest level of polishability: mirror shine in a flash due to spherical fillers
- Creation of a structural shade through precise light refraction of the homogeneous pearl structure as well as reflection of the surrounding tooth shade: for a perfect chameleon effect, even for bleached teeth
- Perfect gloss due to optimal light reflection
- Permanent colour fidelity
- Highly resistant to discolouration
OMNICHROMA from the Technology Pioneer TOKUYAMA
Sub-Micro-Pearl-Technology
OMNICHROMA comes from the TOKUYAMA Research Center in Japan. The TOKUYAMA DENTAL Corporation, based in Japan, has been developing innovative dental solutions for over 40 years and is one of the leading manufacturers of products for conservative and prosthetic dentistry. The secret is our method of manufacture. Glass materials are ground until the individual particles of the fillers lie approximately within a desired size range. However, the fillers clearly differ in shape and size.
TOKUYAMA DENTAL produces OMNICHROMA fillers based on its own patented “Sub-Micro-Pearl-Technology”. In this process, the Sol-Gel method is used to progressively coat spherical fillers in an organic solution. After several weeks, the fillers have “grown” evenly in a spherical shape and are exactly 0,26 µm in size. In this optimal size, the desired colour adaptation effect is achieved precisely in combination with other outstanding physical properties.
Selected Studies
Clinical studies confirm the excellent colour adaptation properties of OMNICHROMA (CAP-V)
The University of Texas study analysed the Visual Colour Adjustment Potential (CAP-V) of various composite materials through visual evaluation. Of the five composites tested, OMNICHROMA from TOKUYAMA DENTAL demonstrated the best shade adaptation effect. The evaluation of shade differences in Class I restorations compared to the surrounding artificial tooth substance was lowest for OMNICHROMA, which represented the best correlation between OMNICHROMA and the A1-D4 prosthetic teeth.
Effect of filler size on the colour adaptation effect
To demonstrate that the size of the fillers significantly relates to the structural shade produced, Tokyo Medical and Dental University examined three composites with fillers of different sizes for their respective shade adaptation effects. Cavities on eleven different human teeth (shades A2, A3, A4, B2, B3, B4, C2, C3, C4, D2, and D4) were filled with OMNICHROMA (260 nm), an experimental nano-composite (100 nm) and a conventional composite with ground fillers. The respective colour adaptation was then measured using a spectrophotometer and compared with the measured colour before filling (Delta E00).
The samples demonstrated significant differences with respect to Delta E00 (p < 0.05), depending on the material differences. OMNICHROMA exhibited significantly lower Delta E00-values than R1 (ground fillers) and R2 (nano fillers) from both viewed from incisal and cervical, suggesting that OMNICHROMA has a superior ability to mimic the original shade of the human tooth. This also indicates that the particle size of the filler has a significant influence on OMNICHROMA’s colour adaptation capability.
Not only superior in colour adaptation, but also superior colour retention
At Okayama University, a series of tests investigated the colour stability of OMNICHROMA. Four artificial teeth in the shades A1, A2, A3 and A3.5 were filled accordingly and stored in a water bath. The colour adaptation of OMNICHROMA was measured immediately after one day, after one week and after three months. The result was as follows: “The study demonstrated that OMNICHROMA can cover a wide range of cavity colours with just a single shade. This study also demonstrated that the composite material based on the structural shade system has the potential to enable esthetic restorations without shade selection or layering.”
A further in-house study (TOKUYAMA R&D) also showed that OMNICHROMA still adapts to the changed real tooth colour even after bleaching.
Clinical studies confirm the excellent colour adaptation properties of OMNICHROMA (CAP-I)
Another study by the University of Texas also analysed the Instrumental Colour Adjustment Potential (CAP-I) of various composite materials by instrumental evaluation. OMNICHROMA again confirmed the results of the previous study (CAP-V) in the instrumental determination of the colour adaptation effect. Both visually and instrumentally, OMNICHROMA thus offers a very broad chameleon effect across the entire VITA shade palette.
Not only superior in colour adaptation, but also superior under load
The Oregon Health & Science University investigated numerous material properties of OMNICHROMA in comparison to conventional composite materials. Here, too, OMNICHROMA’s superior class was demonstrated, as the special filler structure and filler composition result in an outstanding load-bearing capacity of the material. Among other things, this is reflected by excellent compressive strength.
Packaging
✔ Refill: 1 single syringe (4g)
✔ Refill: 20 capsules (0.2g each)
