In a practical and easy manner, the Opallis Shade Guide possesses different characteristics that make planning the case easier and more assertive. Manufactured with Opallis composite, the pieces provide optical properties identical to the Opallis composite. In addition, each piece has three different thicknesses as a way of predicting the opacity of the future restoration as a result of the depth of the dental wear. Overlapping the pieces in the scale is a simple task that produces reliable results, mimicking the layering technique. In total there are 35 pieces (shades) following the Opallis nomenclature, classified using the VITAPAN® Classical shade standard, including special resin shades.
Characteristics and Advantages
• Includes all Opallis shades and nomenclatures, facilitating the identification of shades.
• Pieces manufactured with Opallis composite, maintaining all of its characteristics (opacity, fluorescence, opalescence, shade reliability, etc.).
• Follows the VITAPAN® Classical standard and also includes additional shades not present in the VITAPAN® Classical scale.
• Easy handling and conservation.
• Each piece presents three layers with varying thicknesses, allowing greater predictability of opacity at different restoration depths.
• Enables overlapping of pieces, preventing the effect of different shades combined in stratified layers.
• Selection of shades for direct restoration works with the Opallis composite resin or others using the VITAPAN® Classical standard.
• Selection of shades for prosthetic works where the reference is VITAPAN® Classical standard.
• Shade tracing of teeth during bleaching.
Step by Step
Perform prophylaxis of the teeth to remove extrinsic dirt.
Bring the Opallis Color Scale near the tooth and view it under natural light. It should be observed at a distance of 30 cm, semi-extending the arm.
For both enamel and dentin, the shade taking should be done by selecting the hue – basic shade (A, B or C), followed by the chroma – shade saturation (0.5 to 3.5).
To choose the dentin shade, we suggest positioning the scale on the cervical third of the teeth, where the enamel is less thick.
To choose the enamel shade, we suggest positioning the scale on the incisal/occlusal third of the teeth, where the dentin has less thickness and interference.
Note: effect shades may be used as needed to mimic the characteristics of natural teeth. They are usually used as increments of enamel.
Upon final selection, overlap the pieces from the scale in order to forecast the result in terms of opacity and final effect.
Whenever judged necessary, request the opinion of the patient about the selected shade using a mirror.
Do different thicknesses of resin layers interfere with the final result of the restoration? How can I predict this effect using the Opallis Color Scale?
Yes, the increase in thickness causes an increase in the opacity of the restoration, which can be foreseen when overlapping the pieces from the scale or considering different degrees of a piece. The first degree is 0.7mm thick, the second is 1.4mm and the third is 2.5mm thick.
Hues A (brown), B (yellow) and C (gray) are present in accordance with the Opallis resin.
The Opallis Color Scale provides different chroma values varying from 0.5 to 4 according to the level of shade saturation.
T shades correspond to the resins with the highest translucency (in comparison with enamel and dentin) and can be used as incisal, proximal or effect layers.
These are the dentin or enamel shades (respectively) lighter than B1 (the end of the VITAPAN® Classical scale) for the restoration of teeth that have been bleached. The D-bleach (dentin) resin has only one version, while E-bleach (enamel) presents three shade variations (luminosity of the restoration or amount of black and white present in the resin) which are low (L), medium (M) or high (H). The higher the value, the lighter the resin.
The opaque shades are OP (pearly, similar to A2, but with greater opacity), OW (opaque white), and A0.5 and B0.5 (half a tone less saturated than A1 and B1). These shades are indicated for masking darkening of the tooth structures.
The value is the brightness that the restoration features and resins VL, VM and VH are indicated to be used as the last increment and to balance this feature. Resins with a low value will be less luminous (more gray), and high value resins increase the brightness of the restoration. Normally, young teeth have a higher value due to the characteristics of the enamel, and the teeth of older people will present a lower value. View more information at the Opallis section.
Information for the Professional
• Use the Opallis Color Scale as informed in the Instructions for Use.
• The product is indicated for professional use only.
• The pieces in the scale are relatively fragile and should be handled carefully.
• While taking the shade, the teeth should be clean and hydrated.
• When overlapping the pieces from the scale, the contact interface should be filled with a liquid film (water or glycerin, for example) to guarantee the shade fusion process.
• The selection of the shade with absolute isolation is not recommended, as the teeth will be dehydrated and their original shade distorted.
• Make sure that female patients are not wearing lipstick, as this may interfere when taking the shade.
• If possible, take the shades under diffuse natural light or with artificial lighting similar to daylight (temperature between 5000°K and 6000°K) and not under operative lights (reflector). The shade should be taken at a location near the window, observing the tooth at an approximate talking distance.
• To avoid fatigue and consequent errors when taking the shade, the professional should rest their vision every 10 seconds when assessing the patient’s teeth. This may be realized by looking at a blue surface (e.g. a blue card) at each interval.
• Opallis Color Scale should not be autoclaved.
• Disinfection must be carried out with cotton soaked in alcohol 70 using light friction movements.
• If the piece from the scale loses its shine, polish with Diamond Excel (FGM) paste and Diamond felt discs (FGM).
• The validity period is undetermined.