The process of bone regeneration, which was destroyed by microorganisms from the root canal, is long and can take from several months to several years. To control effectiveness of treatment it is necessary to visit Endodontists. Endodontists in Idaho recommend examination after canal filling every 6 months in the first year and then once a year for next three years. Comparing radiographs the doctor assesses the dynamics of bone regeneration. Endodontists in Idaho will also at the appointment give recommendations how to take care of filled tooth to prevent the recurrence of tooth decay.