Figure 5: ZEODENT® Abrasivity Figure 6: ZEODENT® Cleaning PerformanceAbrasivity (RDA) Cleaning (PCR) 250 120 200 100 TECHNICAL INFORMATION 1418 150 80 100 60 50 40 ZEODENT® Dental Cleaning Silicas 0 20 0 5 10 15 20 25 30 0 5 10 15 20 25 30 Silica Loading (%) Silica Loading (%) Test Methods for Measuring ZEODENT® 103 ZEODENT® 113 ZEODENT® 103 ZEODENT® 113 ZEODENT® 124 ZEODENT® 116 ZEODENT® 124 ZEODENT® 116 Abrasivity of Dental Silicas This information and any recommendations, technical or otherwise, are presented in good faith and believed to be correct as of the date prepared. Recipients of this information and recommendations must make their own determination as to its suitability for their purposes. In no event shall Evonik assume liability for damages or losses of any kind or nature that result from the use of or reliance upon this information and recommendations. EVONIK EXPRESSLY DISCLAIMS ANY REPRESENTATIONS AND WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, AS TO THE ACCURACY, COMPLETENESS, NON-INFRINGEMENT, MERCHANT- Key Performance Characteristics of ZEODENT® Dental Cleaning Silicas ABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE (EVEN IF EVONIK IS AWARE OF SUCH PURPOSE) WITH RESPECT TO ANY INFORMATION AND RECOMMENDATIONS PROVIDED. Reference to any trade names used by other companies is neither a recommendation nor an endorsement of the corresponding product, and does not imply that similar products could not be used. Evonik reserves the right to make any changes to the information and/or recommendations at any time, without prior or subsequent notice. ZEODENT® 103 ZEODENT® 124 ZEODENT® 113 ZEODENT® 116 ATTRIBUTES SILICON DIOXIDE SILICON DIOXIDE SILICON DIOXIDE SILICON DIOXIDE Level of Cleaning High Medium/High Medium Gentle Level of Abrasivity High Medium/High Low Very Low Viscosity Build Very Low Low Moderate Moderate Clarity Applications Opaque/Translucent Translucent Clear Clear Europe / Middle-East / North America Asia / Pacific Africa / Latin America Evonik Corporation Evonik (SEA) Pte. Ltd. Evonik Resource Efficiency GmbH Business Line Silica Business Line Silica Business Line Silica 299 Jefferson Road 3 International Business Park Rodenbacher Chaussee 4 Parsippany, NJ 07054-0677 #07 – 18 Nordic European Centre 63457 Hanau-Wolfgang USA Singapore 609927 Germany The Trusted and Reliable Source for Dental Silicas phone +1 800 233-8052 phone +65 6809-6877 phone +49 6181 59-12532 fax +1 973 929-8502 fax +65 6809-6677 fax +49 6181 59-712532
[email protected] [email protected] [email protected] High performing products. Rigorous quality systems. attributes and promises delivered upon by the associates of www.evonik.com More silica grades Unparalleled customer technical support and care. A global the only name you need to know and trust when it comes to RE-11-JUNE17-L+L www.zeodent.com from Evonik see also technology and support team. Worldwide distribution net- dental silica: Evonik. www.aerosil.com www.sipernat.com work. More than mere statements and words, these are the EVONIK MANUFACTURES AND SUPPORTS ITS ZEODENT® DENTAL SILICAS ACROSS THE GLOBE You can count on Evonik as your partner in achieving the desired level of cleaning www.zeodent.com
[email protected] safely for your dentifrice products. 5 L+L 17-01-171 TI Zeodent Dental Silicas, us_6-seiter.indd ––– 19. Jul 2017; 12:28 Uhr L+L 17-01-171 TI Zeodent Dental Silicas, us_6-seiter.indd ––– 19. Jul 2017; 12:28 Uhr High Performing Products Figure 1: The Einlehner test method Figure 2: Correlation of the Einlehner method Figure 4: Correlation Ra vs. RDA value to the RDA method The ZEODENT® family of dental silica products is designed to provide superior performance in toothpaste applications. Rotating Shaft Selecting from the broad range of ZEODENT® products, tooth- R2 = 0.90 RDA Value R2 = 0.99 paste producers can optimize the important characteristics Powder RDA Value of each toothpaste formulation, including: cleaning and whit- 200 250 ening performance, abrasion and sensitivity, optical clarity, 180 200 Downward Force viscosity and compatibility with other ingredients. 160 150 Silica Slurry 140 100 120 50 100 0 1 2 3 4 5 6 7 8 9 10 80 ZEODENT® Dental Cleaning Silicas Mean Ra Value (µm) 60 Silica Particle PVC Bushing 40 Standard precipitated silica 20 ZEODENT® silica is an important ingredient in toothpaste, pro- goals of each formulation. Included in this technical bulletin Larger Particle 0 viding safe and effective cleaning with minimal impact on hard are descriptions of recognized test methods, as well as those 0 1 2 3 4 5 6 7 8 9 10 11 12 tissues of the oral cavity. Evonik works collaboratively with specific to quantifying the efficacy and safety of ZEODENT® Einlehner abrasion (mg loss) customers to select the optimal cleaning silica to achieve the dental cleaning silicas. Bronze Screen The All-Star Dental Cleaning Silica Lineup THE RELATIVE DENTIN ABRASION (RDA) TEST METHOD THE PLASTIC TEST METHOD The Plastic method correlates to RDA for toothpastes contain- The American Dental Association (ADA) monitors tooth- radiotracer is measured in the rinse solution and compared The Plastic method utilizes an acrylic specimen that is abraded ing standard dental grade silica. Changes in particle shape, DESIGNED FOR SUPERIOR PERFORMANCE, EFFECTIVE CLEANING, RELIABLE SAFETY paste safety using RDA, which is measured using a radio- to the standard to determine the RDA. The ADA recom- by brushing with toothpaste. The level of wear can be quanti- size, abrasive type or other ingredients skew the relationship tracer method developed by John J. Hefferren (contained mendation for toothpastes is an RDA limit of 250 fied as an increase in surface roughness or volume of plastic with RDA significantly. Fig. 4 shows this correlation, which is in ISO 11609). For this method, human dentin is brushed (regional preferences exist). This method provides the that is removed via profilometry. very good for standards. However, a larger particle silica type ZEODENT® 103 ZEODENT® 113 with a dentifrice using a well controlled brushing appa- most direct and relevant relationship to clinical and con- deviates considerably. is our highest cleaning silica offering excellent cleaning and is a cost-effective solution to achieve desired cleaning perfor- ratus, the V8 Cross Brushing Machine. The quantity of sumer product use. whitening when used alone or as a “booster” in combina- mance for standard toothpaste formulations. ZEODENT® 113 tion with our ZEODENT® 113 or ZEODENT® 116 cleaning offers formulators a wide range of flexibility with regards to silicas. At varying dosage levels, ZEODENT® 103 allows active ingredient compatibility and the optimal level of clean- formulators to achieve a broad range of cleaning and whiten- ing when lower abrasivity is required. For cleaning similar to Figure 3: Cross section of worn specimens showing increasing levels of abrasion described by roughness values (Ra) ing performance. ZEODENT® 113 with exceptional clarity, ZEODENT® 115 is The Einlehner and Plastic Test Methods the perfect choice. ZEODENT® 124 is our medium to-high cleaning silica, offering improved ZEODENT® 116 optical performance over ZEODENT® 103. ZEODENT® 124 offers gentle cleaning with the highest ratio of cleaning to TWO ADDITIONAL TEST METHODS TO DETERMINE EFFECTIVE CLEANING AND SAFETY cleaning silica also has reduced abrasion, making it more abrasion, making it ideally suited for formulators when a gentle on tooth enamel. Like ZEODENT® 103, ZEODENT® softer touch is required. ZEODENT® 116 also offers clarity 124 can be used alone or as a “booster” to provide clean- and contrast for clear gel toothpastes. THE EINLEHNER TEST METHOD ing performance in standard toothpaste formulations. When The Einlehner method utilizes a cylindrical PVC bushing that greater clarity is required along with the cleaning efficiency is rotated under load against a bronze screen in the presence of ZEODENT® 124, ZEODENT® 120 is the product of of silica slurry. The level of wear is then determined gravi- choice. metrically. As this method produces a very strong correlation to powder RDA testing, Evonik uses the Einlehner method Ra 0.1 μm Ra 2.15 μm Ra 4.56 μm globally as a quality control tool to ensure the consistency of ZEODENT® silica grades. 2 3 4 L+L 17-01-171 TI Zeodent Dental Silicas, us_6-seiter.indd ––– 19. Jul 2017; 12:28 Uhr