The length of time required for periodontal therapy depends on the severity of the patient's gum disease. Patients with mild gingivitis can expect their therapy to last only a few days to a week, whereas those with more severe periodontitis may require several appointments over a few months.
It is important to note that while periodontal therapy can halt the progression of gum disease, it’s not a cure, and patients will need to continue practicing good oral hygiene habits to prevent it from returning.