This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Which of the following is major concern for overdenture fabrication 
Select and explain. 
A. Reduced interarch space, B. Increased cost due to endodontic treatment and coping fabrication, C. Patient’s oral hygiene habits, D. More number of visits as compared to complete denture patients
C: Patient’s oral hygiene habits
Answer: C: Patient’s oral hygiene habits 
Explanation: Scrupulous hygiene accompanied by biannual professional monitoring is mandatory to ensure continued abutment health. Substantial part of it depends on patient's oral hygiene procedures and compliance.