Therefore currently, , Nobel Biocare is the subject , on behalf of the Swedish Medical Product Agency (MPA) , of a requirement to improve the instructions leaflet for two of its products that is NobelDirectÔ et NobelPerfectÔ. MPA  is convinced that  poor use of implants entails ,  in the places involved ,  a reduction in bone, which could cause fractures. Therefore, it has requested Nobel Biocare  to review its usage inserts of these two products.