Opallis Pediatric is a microhybrid composite with nanoparticles for anterior and posterior teeth.
Characteristics and Advantages
• Selection of special shades: as deciduous teeth are more opaque and lighter, shades A.05 and B0.05 are extra opaque and therefore have higher opacity than dentin and are lighter than shades A1 and B1.
• Easy and long-lasting polishing: shine similar to the tooth structure.
• Increased aesthetics: its mechanical properties meet the requirements of restorations in anterior and posterior teeth.
• Excellent radiopacity.
• Opalescence identical to natural teeth.
• Fluorescence: balanced with the dental structure.
• High degree of conversion
• Longevity: reduced wear and surface roughness, contributing to maintaining the shine and longevity of the restoration.
• Ergonomic packing: lid attached to the body of the syringe.
• Reduced sensitivity to light.
• Indicated for restorations in anterior and posterior teeth, enabling optical characteristic of the tooth structure to be reproduced.
• Small to medium size occlusal, proximal and occlusal-proximal restorations.
• Restorations of anterior teeth Class III, IV and V.
• Direct veneers in resin composite.
• Bonding of tooth fragments.
• Reduction and/or closure of diastema.
• Correcting and/or changing the form of one or more teeth.
• Structural Defects: imperfect amelogenesis, enamel hypoplasia, non-carious cervical lesions.
• To correct and/or alter the proportion of the width and/or length of the teeth.
• Restorations in deciduous teeth.
Step by Step
For the shade selection, carry out prophylaxis. Teeth should be cleaned and hydrated, and without isolation.
Methods for choosing the shade
This can be done with the commonly used VITAPAN® Classical shade scale.
A small portion of resin composite may be placed on the vestibular surface of the tooth to be restored (without etching and application of the adhesive system) light cure for 30 seconds, humidify with the patient’s saliva and observe. This stage may be used to confirm the shade of the resin composite.
For more challenging cases we recommend that the professional first produces a chromatic map of the tooth. The chromatic map includes the most detailed information about the specific characteristics of the teeth.
Undertake the preparation for execution of direct adhesive restorations.
Undertake acid etching (Condac 37% – FGM) initially in the enamel margins and then inside the cavity. The conditioning time is 15 seconds. Next, wash with plenty of water. Remove all of the acid from the dental structure and dry the dentin without dehydrating it.
Apply the adhesive system according to the manufacturer’s recommendations.
Insertion and light curing of the resin composite:
• We recommend inserting and curing in increments. This technique allows more uniform curing. Use the curing times described in Table 1 (see Instructions for Use) for layers of resin up to 1.0mm.
• Restore the cavity in accordance with the selected shade, applying thin layers of Opallis (maximum of 1mm) carefully adapting to the cavity.
For finishing and polishing, Diamond Pro (FGM) sandpaper disks and Diamond Flex (FGM) felt disks can be used with the aid of Diamond ACI and ACII and Diamond Excel (FGM) polishing pastes.
Checking occlusion is an extremely important factor. Restorations in supraocclusion cause major stress on the tooth and restoration which can lead to pain. Do not leave them in infraocclusion.
This is the tooth’s capacity to absorb ultraviolet radiation (e.g. blacklight) and reflect this radiation in the visible light range, giving it a bluish appearance.
Because in order to restore part of the lost tooth, it is necessary to reproduce all of the properties of the natural tooth. Nonfluorescent resins are detected as dark areas when exposed to ultraviolet light.
Opalescence is an optical property of enamel that has the ability to transmit long waves in the wavelength of natural light and reflect short waves. Opalescence may be observed in the incisal area of the teeth in which there is only the presence of enamel. Due to translucency, the enamel has the ability to reflect blue light waves and transmit orange light.
For best results, we suggest a power of 450mW/cm². With suitable light curing, there is a reduction in shade changes and marginal infiltration. To guarantee the quality of the restorations, it is necessary to periodically assess the power density of the light-curing unit.
The microparticle resins are used on the surface to reproduce the enamel and improve polishing quality. Can we achieve good polishing with the Opallis resin (microhybrid with nanoparticles)?
In a recent study (Ardu & Krejci, Quintessence Int, 2006), the result of the veneering technique with microparticle resins was evaluated after 20 years of clinical performance. The authors point out that the microparticle resin does not have sufficient fracture resistance to be used in large volumes and conclude that “the use of appropriate techniques and materials allows optimal aesthetic results for restoration of small and medium anterior defects with direct composites”.
The particle size distribution allows for adequate filling of the resin, contributing to its high mechanical strength and wear characteristics necessary for restorations in posterior teeth. The reduced average particle size of 0.5μm provides ease of polishing, creating a restoration with a smooth surface and high shine, which dispenses with the use of a microparticle resin as a final layer. It is worth reinforcing that using a resin other that Opallis in the last layer may change the final fluorescence of the restoration. For example, a microparticle resin without fluorescence will mask the fluorescence of the Opallis layers.
There are various levels of fluorescence in resin composites. How can I identify if a resin has fluorescence compatible with the tooth structure?
Resin manufacturers conducted tests on their enamel masses, dentin and effects, comparing them with pre-established standards for all resin masses with natural dentin and enamel. This ensures fluorescence at the right amount for use with resin composite restorations. Ultraviolet light is used clinically and in the laboratory for this distinction. With the acquisition of such equipment, it is often costly for the clinician. A good solution is to resort to the information leaflets, materials with a good origin and scientific articles. Check the Technical Profile of the resin used, seek out quality literature and understand what fluorescence is. FGM provides all of the equipment for certification of its resin composite, such as a spectrophotometer, rheometer and ultraviolet light, ensuring not only adequate fluorescence, but also all the physical and mechanical properties that a microhybrid resin requires.
Information for the Professional
• Use Opallis Pediatric only as informed in these instructions.
• The product is indicated for professional use only.
• In the event of allergic reactions to the product suspend its use.
• Avoid the use of temporary liners or materials based on eugenol, as these interfere in the curing of the material.
• Avoid contact between uncured Opallis and the skin, mucosa and eyes. Before curing, the product may cause a slightly irritating effect and sensitivity due to methacrylate.
• The packaging of the product should be closed immediately after use.
• Store the product in a clean and dry location in its original packaging.
• Do not expose the product to high temperatures or direct sunlight.
• Store the product at temperatures between 5-25ºC/ 41-86ºF.
• Do not freeze the product.
• The validity period of the product is 3 years from the production date.
• Do not use the product after its expiration date.
• Follow the legislation of your country for disposal of the product.
• Do not reuse empty packaging.
• Keep out of reach of children.
• Protect the product from external contamination.