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Dentsply Sirona Finland
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SDR flow+ We've made the first a few shades better.

SDR flow+ is the improved next generation of the leading and still unmatched flowable bulk-fill material SDR.

The unmatched SDR bulk fill technology

In 2009, SDR was the first technology that allowed 4mm bulk placement in flowable consistency. More than 50 million applications and several long-term clinical studies later, it is the bulk fill technology of choice for faster and easier creation of reliable direct restorations. SDR technology answers the two challenges of direct restorations: adaptation and efficiency.

Adaption is the key to long term success

  • Voids and gaps between restoration and cavity walls directly influence secondary caries formation1
  • Improper adaptation of composite during placement leads to the formation of voids2
  • High shrinkage stress may lead to marginal gap formation2

Kuper NK, Opdam NJ, Ruben JL, de Soet JJ, Cenci MS,Bronkhorst EM, et al. Gap size and wall lesion development next to composite. J Dent Res 2014;93, 108S–13S
2 Nedeljkovic et al. Is secondary caries with composites a material-based problem? Dent Mater 31 (2 0 1 5), e247–e277
3 Data on file

Low shrinkage stress

During light-cured polymerization, resin monomers are in chaotic movement as they begin to form the polymer matrix. SDR technology enables the formation of a more relaxed network, minimizing the build-up of stress. This reduces the risk of gap formation during polymerization.

Shrinkage stress: Shown as a ratio of SDR flow+ material vs. competitors


SDR’s unique chemistry helps ensure the longevity and overall quality of a bulk fill restoration. SDR flowable bulk fill technology fills and easily adapts to the cavity, flowing into nooks and crannies to provide excellent cavity adaptation during placement.

Efficiency is the key to productivity

Direct restorations represent approximately a third of the annual revenue of a general practice. Increasing the efficiency of the Class II treatment directly impacts day-to-day dental office revenue.5,6 SDR bulk fill technology allows the material to be applied in 4mm increments without an additional liner. This automatically decreases procedural time and inventory.

  • Self-levels for up to 40% time savings over classic layering technique
  • Use without an additional liner
  • Self-levels and does not require additional manipulation to adapt


5 2010 Survey of Dental Practice – Income from the Private Practice of Dentistry. http://www.

6 American Dental Association Procedure Recap Report (2006)

SDR flow+ procedure

Orange Line = Bonding

  1. SDR flow+ material
  2. Capping Layer: Universal composite

Conventional procedure

Orange Line = Bonding

  1. Flowable Liner
  2. Increment 1: Universal Composite
  3. Increment 2: Universal Composite
  4. Increment 3: Universal Composite

More Versatility

The upgraded formulation of SDR flow+ material adds even more versatility, by introducing new shades and expanding the range of indications.

More Shades

In addition to one universal shade, three new A-shades of SDR flow+ - A1, A2, and A3 - increase versatility even further in a wide range of cases including visible Class II restorations, primary posterior dentition, Class III and Class V restorations.

More Indications

Additional oportunities to use SDR flow+ material.

+ Class III and V Restorations

Due to its unique chemistry and improved wear resistance, SDR flow+ material is now approved to be used in Class III and Class V restorations where a capping agent wouldn’t be used. This expands its capabilities to be used in more restoration classes than many other flowable material.

+ Primary Posterior Dentition

SDR flow+ material can be used without an additional universal composite and in increments up to the occlusal surface. Fast and easy application technique make it ideal for the treatment of children.

Primary molar with SDR flow+ restoration after 2 years in-situ. Dr. V. Ehlers

+Pit & Fissure Sealing

The thin compule allows the material to flow easily into all fissures for highly precise application.

Image: Dentsply Sirona internal picture

+Core Build-Up

The 4mm depth of cure of SDR flow+ material make it a fast and easy alternative for core build-up. It handles instrumentation and shaping with ease.

Image: Dr. van der Vyver

Reliable adhesion and tight seal in high C-factor endo cavities

+ Reliable adhesion

Endodontic cavities are particularly challenging for bulk fill composites, as most are very deep Class I cavities. This maximizes shrinkage stress potential, indicated by a high C-factor. Studies indicate that when high C-factor cavities are filled in bulk, the choice of the composite is an important element to avoiding adhesive debonding.8 SDR flow+ material with SDR technology can deal with high C-factor cavities, leading to a tight coronal seal even for post-endodontic cavities.


Image: Pre-test failures [%] during micro tensile bond strength testing to cavity 8,9

Van Ende A et al., 2016: Effect of Bulk-filling on the bonding efficacy in Occlusal Class I Cavities. J Adhes Dent.; 18(2):119-24

Internal Report Ebert J, Study No 14 1408 (2011). Available upon request, see contact details

+ Tight Seal

“SDR flow+ ensures a tight seal of the endodontic access cavity – an important factor for long-term endodontic treatment success.”

Prof. Dr. Schirrmeister, University of Freiburg, Germany


Image: Relative number [%] of specimen showing leakage into root canal9

9 Internal Report Ebert J, Study No 14 1408 (2011). Available upon request, see contact details

Years of clinical success

While making Class I and Class II restorations faster and easier, the SDR technology in SDR flow+ material also shows excellent long-term reliability in several clinical studies. In fact, the long-term survival rates of bulk fill restorations with SDR technology provided to be equivalent to those of restorations done in the conventional layering technique.



JWV van Dijken and U. Pallesen11

“During the six year follow up, the bulk fill technique was proven to be a clinically safe technique; highly acceptable; clinically durable.”

A total of 183 Class I and Class II restorations were evaluated at recall. 92 using SDR and Ceram·X in the bulk-fill technique against 91 using just Ceram·X composite in the layering technique. The observers conclude:

  • Clinically safe
  • Highly acceptable clinical durability
  • Clinical performance and failure rate was equivalent to conventional layering (3 failures in both test and control group)

11 Internal report # 14.1488 (2016-11-07); Data on file


JWV van Dijken and U. Pallesen11

“The use of a 4mm incremental technique with the flowable bulk-fill resin composite showed during the 5-year follow up slightly better, but not statistical significant, durability compared to the conventional 2mm layering technique in posterior resin composite restorations.”12

A total of 183 Class I and Class II restorations were evaluated at recall. 92 using SDR and Ceram·X in the bulk-fill technique against 91 using just Ceram·X composite in the layering technique. The observers conclude:

  • Both restorative techniques showed good surface, marginal stability and color stability
  • No statistically different annual failure rates between bulk-fill and layering technique were observed
  • No post-op sensitivities have been observed at all

11 Internal report # 14.1488 (2016-11-07); Data on file

12 van Dijken JWV, Pallesen U, 2016: Posterior bulk-filled resin composite restorations: A 5-year


J. Burgess and C. Munoz13

“There were no observations of recurrent caries associated with the low stress resin and no reports of adverse events throughout the duration of the trial.”12

  • No failures attributable to SDR
  • No post-operative sensitivities
  • No adverse effects on gingiva in contact with SDR


12 van Dijken JWV, Pallesen U, 2016: Posterior bulk-filled resin composite restorations: A 5-year randomized controlled clinical study; J Dent 2016 Aug;51:29-35

13 Internal report #765-540 (2012-02-17); Data on file

Integral to Class II Procedural Success

Integral to Class II Procedural Success

Palodent V3

Sectional Matrix System

  • Adapts to the natural contour of the tooth
  • Create predictable, accurate contacts and a tight gingival seal
  • Can be configured for multiple restorations at once

Prime&Bond active

Universal Adhesive

  • Versatility for use with all etching methods, all indications
  • Self-leveling — less pooling and dry spots
  • Active moisture control for reliable performance on over-wet and over-dry dentin
  • Virtually no post-operative sensitivity