NANO IONOMER ( Ketac N 100 )

The nano-ionomer contains polyacrylic and itaconic acid copolymers necessary for the glass-ionomer reaction along with fluoroaluminosilicate (FAS) glass and water. The nano-ionomer also contains resin monomers like BisGMA, TEGDMA, PEGDMA and HEMA which polymerize via the free radical addition upon curing and it is stated that the primary curing mechanism is by light activation.

Primer contains water, HEMA, polyalkenoic acid copolymer, and photoinitiators. This material requires application of a primer but does not require a separate step for acid etching or conditioning

The nanofiller (5 nm to 25 nm) and nanofiller clusters (1 µm to 1.6 µm) are “loosely bound agglomerates of nanosized zirconia/silica” that compose approximately 60% of the glass component of Ketac Nano and make for higher filling loading. The manufacturer also reports that this radiopaque restorative material has fluoride ion fluid dynamics, like other glass ionomers, as well as higher strengths, enhanced esthetics, and better polishability than other RMGIs.

Indications  

1. Primary teeth restorations
2. Small class I restorations
3. Class III and class V restorations
4. Transitional restorations
5. Filling defects and undercuts
6. Laminate/sandwich technique
7. Core build-ups .

                                                                              REF: INSIDE DENTISTRY ,2009, 5(1)