SDR™ is a one-component, fluoride-containing, light-curing, radiopaque composite restorative material. It is indicated for use as a base in Class I and II cavity restorations and can also be used as a stand-alone restorative material in areas that are not subjected to masticatory loading.
SDR™ has the handling characteristics of a typical “flowable” composite, but can be applied in portions up to 4 mm thick with minimal polymerization stress. SDR™ material has a self-leveling property that allows it to adapt tightly to the cavity walls. With one universal shade, the material must be overlapped with a universal/methacrylate-based lateral tooth restoration composite/composite that will replace the missing enamel.
Composition
- Barium alumina-fluoro-borosilicate glass
- Strontium-alumina-fluoro-borosilicate glass
- Modified urethane dimethacrylate
- Ethoxylated bisphenol-A dimethacrylate (EBPADMA)
- Triethylene glycol dimethacrylate (TEGDMA)
- Photoinitiator camphoroquinone (CQ)
- Photoaccelerator
- Butylated hydroxyl toluene (BHT)
- UV stabilizer
- Titanium oxide
- Iron oxide pigments
- Fluorescent agent
Indications
- Base and liner for Class I and II direct restorations.
- Restorative material (without the need to overlap with an additional occlusal material) for straight, small Class I restorations for permanent molars and Class I and II restorations for temporary molars.
- Fissure and fossa sealant.
- Stump augmentation.
Contraindications
SDR® is contraindicated in patients with a proven allergy to methacrylate resins.
Compatible adhesives
SDR® is used after the application of a suitable dentin-enamel adhesive and is compatible with conventional methacrylate-based dentin-enamel adhesives, including DENTSPLY's light-curing composite adhesives (see the complete application guide for the selected adhesive).
Compatible restorative materials for enamel restoration
SDR® is used in combination with a suitable universal restorative material or restorative material for filling* of the masticatory group of teeth to replace occlusal/vestibular enamel (see step-by-step instructions).
restorative material* for occlusal/vestibular enamel replacement (see Step-by-Step Instructions for Use) and is compatible with traditional composite restorations.
and is compatible with conventional methacrylate-based composite restorative materials,
including DENTSPLY's light-cured universal/mandibular restorative composites,
designed for Class I and II occlusal restorations (see the complete application guide for the selected occlusal restoration).
of the occlusal restorative material selected).
* Small cavities, fissure sealing and residual limb build-ups do not require overcoating with enamel replacement material.
Step-by-step instructions for application
- Cavity preparation
1) Prepare the cavity by removing all residual amalgam and restorative material.
2) Rinse the surface with a water jet and dry it gently with an air jet. Do not over dry the tooth tissue.
3) Use rabberdams or cotton rolls to isolate the cavity from contamination.
-Matrix placement
To obtain the best contact points, do the following:
1) Install the matrix and wedge. Rubbing the matrix band will improve contact and contours. Installation of the ring prior to wedging is recommended.
Use thin matrix bands in Class II cavities.
2) Pulp protection, tooth conditioning/dentin etching, and adhesive application.
Refer to the adhesive manufacturer's recommendations for pulp protection, tooth conditioning, and/or adhesive application. Once
surfaces have been properly treated, they should be free of contamination. Proceed immediately to the application of SDR® material.
Warning
Risk of damage due to excessive force.
1. Apply material slowly, evenly distributing the pressure on the syringe or dispenser gun piston.
2. Do not apply excessive force to avoid rupture of the syringe or the computer
SDR® material feed
Computil noses
Dosed Computilas are a combination of a unidose and a metal cannula spout.
1) Load the dosed Compomitl into the Compomitl gun. Insert the computerla into the opening of the gun with the neck notch facing forward. Make sure that the neck of the computerla is inserted first.
2) Remove the colored cap from the computerola. The nose of the PC can be rotated 360° for easy entry into the cavity.
3) Apply gentle, even force when squeezing the material out of the computerola. DO NOT APPLY EXCESSIVE FORCE.
4) To remove the used PC, make sure that the applicator gun piston has returned to its original position, causing the handle of the applicator gun to
This will cause the gun handle to retract. Grasp the spout of the Compomitilla and pull it out in a downward motion.
Application of SDR® material
Note: Since SDR® material takes the shape of the cavity, the correct contact points must be created using a
matrix system. The material will not push back the matrix tape. If necessary, manually push back the matrix tape with a suitable hand tool, such as a condenser or spherical corkscrew, before or during peeling.
1) Apply SDR® material directly to the preparation area using constant and slow pressure. Start
spread the material from the deepest part of the cavity, keeping the tip firmly against the bottom. Gradually withdraw the tip as soon as the cavity is filled.
as the cavity fills. Avoid lifting the tip from the mass of material while spreading to minimize trapping air bubbles. Once spreading is complete, wipe the tip against the cavity wall as you remove it from the
surgical field.
2) After a few seconds, the SDR® material will self-align, eliminating the need for further use of hand instruments.
manual instruments. In case of excessive injection, use a microbrush moistened with adhesive to remove the excess material.
excess material. Any visible air bubbles should be punctured with a clean, sharp probe before peeling off.
3) When used as a tooth base restoration material, most cavities can be filled in one large portion up to 4mm, while leaving 2mm to the occlusal border*. In more extensive cavities, apply
material in 4 mm portions, shining each portion carefully.
4) Otherwise, SDR® can be applied thinly as a traditional flowable liner on exposed dentin.
* For small cavities, fissure sealing and residual limb augmentation, the material can be applied over the full volume and occlusal contour of the cavity.
Polymerization
The SDR® material is polymerized in portions up to 4 mm thick.
1) Polymerize the surface of the restoration on each side with a suitable polymerization lamp for materials containing the initiator camphoroquinone, i.e. with a spectral output power distribution of 470 nm.
materials containing the initiator camphoroquinone, i.e. with a spectral power output distribution of 470 nm.
The minimum light output should be at least 550 mWatt/cm2 for 20 s. Refer to the photopolymerizer manufacturer's recommendations for compatibility and curing recommendations.
Inadequate polymerization due to insufficient backlighting.
1) Check photopolymerizer compatibility.
2) Check curing cycle length.
3) Check photopolymerizer power before each treatment.
Final step
1) When the material is used as a base or liner, complete the restoration by using a
universal restorative material or methacrylate-based masticatory restorative material and following the manufacturer's instructions.
Practical Tip:
- In most cases, the best aesthetic result is achieved by choosing the body shade for the occlusal restorative material. If the dentin is heavily colored, it may be necessary to use an opaque shade.
- Do not disturb or contaminate the cured surface or exposed adhesive. If contamination occurs, follow the adhesive manufacturer's instructions for reapplication. If the surface remains intact, additional application of adhesive between batches is neither necessary nor recommended.
2) If polymerized SDR® material needs contouring, finishing and/or polishing, use a
traditional rotary tools, following the manufacturer's instructions.
Form of release
SDR® material is available in:
- Doseable PCs for direct intraoral application
- Small syringes for direct intraoral application
- One universal color
No comments yet