SDR Smart Dentine Replacement

SDR® is the first bulk-fill composite base material. It is a revolutionary way to save you time as it makes posterior direct restorations less cumbersome for the clinician.



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  • Bulk-fill in 4mm increments due to 60% reduction in shrinkage stress versus other composites
  • Up to 40% time-saving over conventional layering composites
  • Easy placement with the compula tip
  • 1 universal shade
  • Significantly reduced risk of post-op sensitivity due to excellent internal cavity adaptation and no void/air bubbles
  • Long-term restorations and very low incidence of microleakage
  • Capped with any universal composite
  • Rated Top Composite Bulk Fill Base in 2012, 2013 and 2014 by The Dental Advisor




SDR is indicated for:

  • Base in cavity class I & II direct restorations
  • Liner under direct restorative materials-class II box liner
  • Pit & Fissure Sealant
  • Conservative class I restoration without a separate enamel cap
  • Core build-up
  • Restoration of primary molars


Keep it simple, make it SDR

Up to 40% time-saving versus conventional layering techniques.

If you use or have used DENTSPLY’s Dycal or Kalzinol products in the past you are sure to be interested in SDR (Smart Dentine Replacement) which can be bulk filled in 4mm and eliminates the need for a separate liner.




Bulk-fill in 4mm increments

The unique patented formulation of SDR leads to controlled polymerisation. A modulator is included, helping the monomers to form a more relaxed network. This reduces the effect of volume shrinkage, therefore resulting in less shrinkage stress (force). This enables SDR to be placed in 4mm increments avoiding the cumbersome and time-consuming layering technique.

Chemically compatable with methacrylate based adhesives and bonds - aesthetics determined by the capping composite.




Excellent cavity adaption and reduced post-operative sensitivity

SDR's flowable viscosity provides ideal self-leveling properties, which gives simple and effective placement of Class I and Class II properties.




A simple 4 stage application technique


SDR Technique

1. Apply acid conditioner followed by adhesive or self-etching adhesive. Light cure.

2. Increments up to 4mm.  2mm short of the cavosurface margin.

3. Light cure 4mm increments.  *Light output ≥ 550mW/cm².

4. Final 2mm layer with composite restorative.




Simplified application and uncompromising reliability is confirmed in clinical studies

A prospective long-term study conducted by dental experts Professors JWV Van Dijjen (Umea, Sweden) and U. Pallesen (Copenhagen, Denmark) concluded that "This is exactly what is needed to perform modern dentistry: materials like SDR that simplify the application procedure and maintain the high quality of the restoration at the same time." Read more


The SDR filling technique has been tested successfully in clinical practice for more than 36 months. The 36-month data from a prospective clinical study by Burgess J., Munoz C. (2012) shows unsurpassed simplification of the restoration of posterior teeth. Read more

Advantages of using SDR in paediatric dentistry

DENTSPLY SDR in paediatric dentistry  

DENTSPLY has extended the indication for SDR, such that since the start of 2014 it is now also approved for class I and class II deciduous tooth fillings in the posterior region without an additional capping layer. This extension of indications is a major benefit for the practitioner - especially in paediatric dentistry. Bulk fill materials are ideal for deciduous teeth, where the focus is on rapid application and reliability of the materials used. The time saving in filling placement is a crucial advantage, both in regular treatment of children, as well as in the treatment of children under general anaesthesia. The reduced abrasion resistance of flowable bulk fill materials is compatible with the natural deciduous tooth abrasion and so is not to be viewed as a disadvantage in the wear phase of primary dentition.


In this case study, Dr Vicky Ehlers discusses two paediatric cases using the advanced bulk fill composite.

Read more


"Being able to cure up to 4mm is a great advantage of SDR and makes life easy and treatment quicker. It's simple to finish off with a composite filling material to ensure an aesthetically pleasing result." - Dr C Slabbert Read more


SDR simplifies the procedure for placing adhesive posterior composite fillings. This is the conclusion of a recent survey among 1319 dentists. Unlike conventional flowables, a large majority of users asserted that SDR offers major advantages in the restoration of posterior cavities. Read more



Before   After                              See more

Watch the self-levelling properties of SDR

Order SDR now and earn DENTSPLY Rewards


You can now enjoy greater rewards with

Benefit from your usual Dealer disount and in addition, the more products you order, the more DENTSPLY Rewards pounds you earn.

Click. Order. Be rewarded. What could be easier?


SDR Intro Kit  Order now  45 x Compula Tips (0.25g each) Universal Shade, 1 x 2.5ml XenoV, 1 x CliXdish, 1 x Compula Tips Gun

SDR Refill      Order now  15 x Compula Tips (0.25g each) Universal Shade


Purchase SDR at

Practical tips for simplified Restorations and free verifiable CPD


DENTSPLY Academy supports dental professionals with a programme of free verifiable CPD to keep them up to date with all the latest  techniques.Its an opportunity for you to learn more about advances in Restorative dentistry from Key Opinion Leaders such as Dr Louis MacKenzie, Dr Martin Goldstein and Dr Ian Cline.

Our verifiable CPD is available at your convenience 24 hours a day at

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