<prompt> Which of the following is major concern for overdenture fabricationReduced interarch spaceIncreased cost due to endodontic treatment and coping fabricationPatients oral hygiene habitsMore number of visits as compared to complete denture patients  <response>: Scrupulous hygiene accompanied by biannual professional monitoring is mandatory to ensure continued abutment health. Substantial part of it depends on patients oral hygiene procedures and compliance. 