NHS dental statistics in England, the patients seen measure shows the number of patients who received NHS dental care in the previous 24 months, where their last Course of Treatment (CoT) started within the past 24 months.
This information is taken from the FP17 form and the 24 month period is based on the date
of validation processing at NHS Dental Services. Any CoT started but not processed within
the period will not appear in the 24 month count.