For Better Dentistry

ChemFil Rock

ChemFil Rock
ChemFilRock is the brand of Glass-Ionomer restoratives that offers simplicity and durability in compromised clinical situations with its unique zinc-reinforced chemistry which offers excellent mechanical properties and a simple placement process. 

Scientific Compendium 1.01 MB
Brochure1.78 MB
Key Claims of ChemFil™ Rock


ChemFil Rock's mechanical strength is up to 25% higher2 compared to other brands. The clinical life expectancy of ChemFil Rock restorations is accordingly enhanced.

CHEMFIL ROCK Adapted 25 strong.jpgDisplayed is the Biaxial Flexural Strength (measured in in Mega Pascals [MPa]) of ChemFil™ Rock and important competitor Glass-Ionomers.
ChemFil™ Rock's Biaxial Flexural Strength is higher than 60 MPa, thus superior to the competition by as much as 25%2.


Due to their limited mechanical strength, conventional Glass Ionomer filling materials are susceptible to fracture and wear, especially when exposed to chewing forces (for instance in Class I or Class II cavities).

Under simulated clinical conditions ChemFil Rock shows no fractures and significantly less wear compared to other brands2. This conclusion is based on extensive chewing simulations (100'000 cycles) conducted by Professor Dr. Frankenberger, University of Marburg, Germany, 2010.

ChemFil Rock Bulk Fracture adapted.jpg
Marginal and bulk fracture rates in percent for various glass ionomer filling materials.
The result: after extensive chewing simulation (100'000 cycles with 50 Newton load each), ChemFil  Rock exhibited neither marginal nor bulk fracture2.
1 These are not DENTSPLY Brands
Data on file

  •  No cavity conditioning
  •  No coating (= varnish) of the final restoration 
  •  No light curing

Overall, ChemFil Rock has only 5 simple application steps. Furthermore, ChemFil Rock is packable and has a non-sticky handling. 

MSDS: Download
Direction for use: Download
60606590 ChemFil Rock Intro Kit 
ChemFil Rock A1 Refill 
ChemFil Rock A2 Refill  
ChemFil Rock A3 Refill  
ChemFil Rock A4-O Refill  
ChemFil Rock Contrast White Refill  
Capsule Extruder II   
1. Is it a problem if a small amount of powder is released upon capsule activation?
Small amounts of powder on the table after activation do not influence the quality of the
material. Simply remove excess powder with a moist tissue.

2. How long do I need to mix the activated capsule?
Place the capsule immediately after activation in either:
  •  a capsule mixer (4000-4500 oscillations/minute e.g. ProMix™ Amalgamator) and mix for 15 seconds
  •  a rotation mixer for 12 seconds of rotation and 3 seconds of centrifugation mixing.
3. Why is it not necessary to use a conditioner prior to applying ChemFil™ Rock in the cavity?
ChemFil™ Rock’s unique technology facilitates adhesion to dentine and enamel.
No additional conditioning step is required.

4. How long is the working time for ChemFil Rock?
After activation, the working time is 1 minute 30 seconds.

5. How long do I need to wait before I can remove the matrice and start finishing?
Remove the matrice and start finishing no sooner than 6 minutes after activation (i.e. 4 minutes 30 seconds after the end of the working time).

6. What is the recommended finishing and polishing system?
Enhance® or Enhance® Multi finishing instruments are recommended for removal of surplus material, finishing and polishing. Water cooling is recommended.

7. Why is it not necessary to put a protective coating on ChemFil Rock?
ChemFil Rock’s unique technology (patent pending) leads to restorations with a high wear and fracture resistance, thus making a coating unnecessary.

8. Why is ChemFil Rock only available in capsule delivery form?
Capsule delivery facilitates ideal and consistent material quality due to pre-dosed powder and liquid quantities/ratios. Hand-mix quality differs widely as it is influenced by the operator and the amount of material used.

9. Why is the capsule nozzle different from competitor products?
The capsule nozzle is designed to provide convenient extrusion and fast filling of large posterior cavities; for this purpose. 

10. Why is the opacity of ChemFil Rock a clinical advantage?
The high opacity of ChemFil Rock results in a high contrast between tooth substances and the restorative material. This is a clinical advantage during finishing, and in case of removal, for the preparation of the tooth for indirect restorations.

11. Does the material adapt well to the cavity walls despite the relatively high consistency?
Yes. In-house tests conducted at DENTSPLY DeTrey have revealed excellent internal adaptation after the material was applied to the cavity. See below:

Chemfil Rock wall cavity adaptation.jpg

12. Why is it possible to manipulate ChemFil™ Rock right after extrusion?
Due to its very low stickiness directly after application, you can immediately start packing and sculpting the material.

13. I notice a clicking noise and a resistance during the first 2 clicks in the capsule extruder. Is that a problem?
This sound is part of the capsule feeding mechanism and does not represent problem.

14. What is the best way to remove the capsule from the DENTSPLY Capsule Extruder 2?
After application, press the release button on the Capsule Extruder 2 until the push rod releases. Slightly rotating the capsule, the empty capsule can easily be removed.

15. How do I disinfect the extruder?
1. Disinfect the Capsule Extruder 2 with an alcohol-based surface disinfectant in accordance with national/local regulations.
2. Follow the disinfectant manufacturer’s Instructions for Use.
3. Rinse and dry.
Do not submerge in disinfection solutions. Do not use ultrasonic cleaning.

16. What maintenance does the capsule extruder require?
Regularly apply dental instrument lubricant.

17. What is the extrudable amount of one capsule?
The extrudable amount is approximately 280 mg of Glass Ionomer material.

18. What are the clinical indications for ChemFil™ Rock?
ChemFil Rock is indicated for:
  •  Semi-permanent restorations of Class I and II cavities in posterior teeth.

In addition, ChemFil Rock is suitable for:
  •  Restoration of deciduous teeth.
  •  Restoration of Class V lesions and cavities.
  •  Restoration of Class III cavities.
  •  Base/core buildup. When used as a core buildup, 2/3 of the remaining coronal dentin OR at least 2mm of circumferential coronal dentin should be left for retention.
19. Can I repair ChemFil Rock restorations?
Adhesion testing showed that ChemFil Rock adheres to aged ChemFil Rock surfaces, which means that maintenance and repair are possible. Refreshing all surfaces by roughening is imperative prior to the application of a new layer of ChemFil Rock.

20. What do the 100,000 cycles in the chewing simulation mean/represent?
In a publication by Prof. R. Frankenberger, 100,000 cycles are considered to be equivalent to two years of clinical service when investigating the marginal quality of composite restorations.