Whenever you went for a tooth filling your dentist must have warmed you that the filling was not long life and it might crack due to stressful chewing or biting but now dentists might be able to guarantee life long fillings and all the applause for this goes to nanotechnology. This technology can reduce incidences of cracking by producing tooth restoration which is tougher as compared to any decay fighting fillings available.
Normally pure liquid resin is mixed with a powder containing coloring and reinforcement which packs the paste into the cavity and hence illuminates the teeth with a light which causes the polymerization of the paste and hardening but it tends to get weakened over a period of time. Now a spray drying technique has been introduced which uses dicalcium phosphate anhydrous which are fifty nanometers and twenty times smaller and since these nanoparticles have a higher surface to volume ratio it turns out to be quite effective in releasing ions and therefore offers more strength to the final filling. In order to make this possible nanoscale silica-fused fibers have been produced which are twice stronger as compared to the commericial variety available.
