G-ænial Universal Flo from GC Next Generation Flowable Composite Technical Manual
Table of Contents 1.0 Introduction 4 2.0 4 Product description 3.0 Indications for use 4 4.0 5 Features and benefits 5.0 Composition 6.0 6.1 6.2 6.3 6.4 6.5 6.6 7.0 7 Physical properties Flexural strength Modulus of elasticity and fracture toughness Three-body wear resistance Polishability Radiopacity Summary of physical properties 8 8 8 9 10 11 11 Shading 12 The tooth colours mentioned in this manual are Vita shades or GC shades.
8.0 Viscosity and handling 8.1 Viscosity 8.2 Application 9.0 Field evaluation 9.1 Handling 9.2 Aesthetics 9.3 Overall evaluation 13 13 13 15 15 16 17 10.0 Literature 18 11.
1.0 Introduction The use of flowable composites has increased since their introduction in 1995. At that time, the main indication for flowable composites was as a liner, mainly under posterior composite restorations. Their flowability ensures a perfect adaptation to cavity preparation walls, decreasing the risk of air entrapment and the inclusion of voids and helping to reduce the stress at the margins of the restoration.
4.0 Features and benefits G-ænial Universal Flo offers intelligent and convenient solutions to improve the characteristics of a flowable composite: Longevity and endurance G-ænial Universal Flo benefits from the design, amount and dispersion of fillers that result in improved physical performance that is similar to a regular composite and the ability to use this flowable composite for all classes of direct composite restorations.
Low shrinkage stress G-ænial universal Flo has low shrinkage stress, helping to conserve tooth structure by preserving the margins and avoiding nanoleakage and cracks. Superb aesthetics G-ænial Universal Flo offers outstanding aesthetics without any compromises. As an integral part of the G-ænial family, superb aesthetics results are assured. Thanks to its broad range of 15 shades and 3 different levels of translucency, it is possible to easily achieve highly aesthetic restorations.
5.0 Composition G-ænial Universal Flo has been developed with the objectives of providing a flowable material with excellent physical properties suitable for use for all direct restorations. In order to obtain a flowable viscosity, flowable composite resins generally exhibit a lower filler content than putty-like composites and poorer physical properties. This is not the case with G-ænial Universal Flo, as the formulation was developed using the following approaches: 1.
6.0 Physical properties 6.1 Flexural strength Definition: Flexural strength is defined as a material's ability to resist deformation under load. Figure 4: Flexural Strength of various composite Flexural strength (MPa) and flowable composite materials. This flexural strength test was conducted following the ISO 4049 specifications.
6.2.2 Fracture toughness Definition: Fracture toughness is a measure of the material’s ability to resist the propagation of a formed crack, also defined as the toughness against bending stress. The toughness is related to the energy absorbed in the bending process. Figure 6: Fracture toughness of various composite materials. Fracture Toughness (MPa) This test was conducted according to the Chevron 0,0 Notched Beam (CNB) Method Source: De Munck et al., Belgium, K.U.
Three-body wear (µm) Figure 8: Three-body wear test of various composite materials. 0 Source: GC Corporation, R&D department, Japan, 10 20 30 40 50 G-ænial Universal Flo 2010 Filtek Supreme XTE Tetric EvoCeram Within the limitations of this test, it can be concluded that the wear resistance of G-ænial Universal Flo is superior to all tested flowable and putty-like composites with the exception of Filtek Supreme XTE which demonstrated similar results.
6.4.2 G-ænial Universal Flo vs. competitors Figure 10: Gloss rate after Toothbrush Abrasion Polish retention of various composites after toothbrush abrasion test test of different composite materials. Source: GC Corporation, R&D department 100 90 80 Gloss value (%) Within the limitations of this test, it can be concluded that G-ænial Universal Flo is capable of maintaining a high level of gloss in comparison with competitor composite material.
7.0 Shading The shade system of G-ænial Universal Flo has been developed following the same shade concept used for G-ænial Anterior. This allows the material to be used as a true filling material for all indications. Figure 12: Fifteen shades are available for G-ænial Universal Flo Standard Shades A1 A2 A3 A3.
8.0 Viscosity and handling 8.1 Viscosity Test set up G-ænial Bond was applied on an acrylic plate and light-cured. Some composite material was applied on the plate and the plate was left to stand vertically for 60 seconds at 37° C.
Figure 16: Cervical restoration using G-ænial Universal Flo, shade A3. Courtesy of Dr Miyasaki, Japan, 2010 The shape of the syringe allows an easy direct application in the cavity. The material can then be contoured with a probe before light-curing. The overall grip of the syringe is comfortable, and only minimal pressure is needed to extrude the material.
9.0 Field evaluation In the development phase, a field test of G-ænial Universal Flo was conducted in June and July 2010, with twenty-height dentists. Almost 500 cases were restored using G-ænial Universal Flo, as follows: • Restorations: 40%. • Lining and base indications: 36%. • Sealants: 5%, • Root surfaces restorations: 5% • Tunnel preparations: 5% 9.
Overall, 79% of the testers rated the handling of the product as good or very good How was the overall handling of Gænial Universal Flo? 50% 46 % 45% 40% 35% 32 % 30% 25% 20% 14 % 15% 7% 10% 5% 0% Very good Good Acceptable Poor 9.2 Aesthetics The extreme ease of polishing was confirmed in this test where 79% of users found the product easy or very easy to polish.
9.3 Overall evaluation Overall, 82% of the testers judged G-ænial Universal Flo as being excellent or good. When commenting on the product, they stated that G-ænial Universal Flo behaved more like a composite with flowable properties than like a flowable composite.
10.0 Literature 1. Characteristics in Polymerization Shrinkage of Latest Low-shrinkage Resin Composite Restoratives. T. Maseki, T. Nitta, M. Yamase, T. Yamada, S. Ogawa, T. Kimishima, Y. Nara and I.L. Dogon. Abstract 457 – AADR 2010, Washington DC, USA 2. Wear resistance of new flowable composite resins. M. Nakayama, F. Fusejima, T. Kumagai and T. Sakuma. Abstract 3271 – IADR 2009, Miami, USA 3. Mechanical Properties of Various Latest Resin Composite Restoratives. M. Yamase, T. Maseki, T. Nitta, T.
Notes G-ænial Universal Flo Technical Manual 19
GC EUROPE N.V. Head Office Interleuvenlaan 33 B - 3001 Leuven Tel. +32.16.74.10.00 Fax. +32.16.40.48.32 http://www.gceurope.com GC AMERICA INC. 3737 West 127th USA - Alsip, Illinois 60803 Tel. +1.800.323.7063 Fax.+1.708.371.5103 http://www.gcamerica.com GC ASIA DENTAL PTE. LTD. 19 Loyang Way #06-27 Singapore 508724 Tel. +65.6546.7588 Fax. +65.6546.7577 http://www.gcasia.info z O MA EN 8 70 04/12 GC CORPORATION 76-1, HasumumaChoItabashi-ku JP -Tokyo 174-8585 Tel. +81.339.65.1221 Fax. +81.339.65.
