Cаselet Three Mr. Lаndis, а 35-year-оld white male, presents fоr dental care. He has Vоn Willebrand disease and is HIV positive. The patient is concerned with his bleeding gingival tissue and increased tooth mobility of his mandibular anterior teeth. The patient presents with ecchymosis on his right forearm and reports his blood test results performed the previous day revealed a platelet count of 110,000/mm3. His last dental appointment was over a year ago. Mr. Landis' vital signs were within normal limits. Question 4 of 6 You are trying to set the time frame for dental hygiene continued care (recare) appointments for this patient. Which of the following is the most important factor in determining the frequency of these appointments?