Manufacturer: Ivoclar Vivadent
Tetric N-Flow is a light-curing, radiopaque flowable nano-hybrid composite based on nano-optimized technology. Tetric N-Flow is based on 10 years of tradition and the clinical performance of Tetric Flow. Because of the material’s outstanding wetting ability even in areas that are hard to reach, it is particularly suitable for use as a cavity liner and for small cavities of any kind. At the same time, the material offers outstanding stability and is thus ideal for Class V restorations.
Tetric N-Flow is the ideal complement to Tetric N-Ceram for an esthetic restoration.
Tetric N-Flow is available in 10 shades – 6 enamel, 1 dentin, 1 incisal and 2 bleach shades. It is supplied in both syringes and Cavifils.
Tetric® N-Flow Bulk Fill is a flowable, light-curing radiopaque composite for direct restorations in posterior teeth. As its opacity increases during polymer- ization, Tetric N-Flow Bulk Fill is also suitable for discoloured tooth structure. It is applied in increments of up to 4 mm as an initial layer in Class I and II restorations. Tetric N-Flow Bulk Fill cures with light in the wavelength range of 400–500 nm.
Tetric N-Flow Bulk Fill is available in three universal shades (IVA, IVB and IVW).
Tetric N-Flow Bulk Fill contains barium glass, Bis-EMA, copolymer, Bis-GMA, CMPEGMA, ytterbium trifluoride, DCP.
Total content of the inorganic fillers: 45-48 vol.%.
Particle size of inorganic fillers: between 0.1 μm and 30 μm.
Placement of Tetric N-Flow Bulk Fill is contra-indicated
In rare cases, components of Tetric N-Flow Bulk Fill may lead to sensitization. The product must not be used in such cases.
Materials containing eugenol/clove oil may inhibit the polymerization of composite materials. Consequently, the application of such materials together with Tetric N-Flow Bulk Fill must be avoided. Discolouration may occur in combination with cationic mouthwashes, plaque disclosing agents and chlorhexidine.
Clean the teeth prior to shade determination. The shade is selected with the tooth still moist using a shade guide. The shade of the composite will correspond with that of the shade tab after the change in opacity has taken place, i.e. after polymerization.
Adequate relative or absolute isolation using suitable auxiliaries, such as OptraGate® or OptraDam Plus, is required.
The cavity is prepared according to the principles of the adhesive technique,
i.e. by preserving as much of the tooth structure as possible. Do not prepare any sharp internal edges or angles or additional undercuts in caries-free areas. The geometry of the cavity is predetermined by the dimensions of the caries lesion or the old filling. Slightly bevel or round out the enamel margins using finishing diamonds (grit-size 25–40 μm). Subsequently, rinse the cavity with water spray to remove all the residue and dry with water- and oil-free air.
In very deep cavities, areas close to the pulp should be selectively coated with a calcium hydroxide-based preparation (e.g. ApexCal®) and subsequently covered with pressure-resistant cement (glass ionomer cement). Do not
cover other cavity walls, since they can be used to support the bond with an enamel/dentin adhesive.
Use a wrap-around matrix for cavities affecting the proximal area or a sectional matrix band and secure it with wedges.
Condition and apply the bonding agent according to the Instructions for Use of the product in use. Ivoclar Vivadent recommends using the following
bonding agent: Tetric® N-Bond Universal (using the self-etching protocol or in conjunction with phosphoric acid etching).
N-Ceram Bulk Fill/IPS Empress® Direct). Processing and finishing should be conducted according to the respective Instructions for Use.
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