Use the Following Case Description to Complete the Following Exercises

Use the following case description to complete the following exercises.
Mr.JTM, a 70-year-old man with a complex medical history and moderate-to-advanced periodontitis and extensive restorative dental treatment, reports to the dental hygienist for his annual dental checkup.During the clinical assessment, the dental hygienist notices moderate plaque biofilm accumulation.The patient reports that a few teeth are sensitive and that he has a "dry mouth." The patient is less than enthusiastic about discussing his daily home care protocol and wants to know how long the appointment will take.
-The most likely contributing factor to the patient's complaint of "sensitive teeth" would be:

A) Lack of fluoride therapy
B) Possible faulty restorations
C) History of periodontal surgery
D) Inadequate plaque biofilm control
E) Lack of compliance with recall appointments