Patient Recall

How recall intervals are set

The default interval most patients associate with dentistry is six months, but clinically the interval is risk-based. A patient with stable periodontal health and low caries risk may be appropriately seen annually; a patient in periodontal maintenance is typically on a three- or four-month cycle.

Operationally, the interval matters because it determines when the patient enters the recall list and therefore how the schedule fills. A practice that sets everyone to six months regardless of risk both over-serves low-risk patients and under-serves high-risk ones, and produces a hygiene schedule that does not reflect actual clinical need.

Pre-appointing versus reactivation

There are two recall strategies and most practices run both. Pre-appointing books the next visit before the patient leaves the current one, while they are physically present and the calendar is open. Reactivation contacts the patient when their interval comes due.

Pre-appointing produces dramatically better attendance rates but has a failure mode: an appointment booked six months out is easy to forget and easy to move. Reactivation has the opposite profile, lower conversion, but the patient is choosing the date with current information about their own schedule. Practices that pre-appoint aggressively and never confirm end up with a full-looking schedule and a high failure rate.

Why recall lists decay

A recall list is only as good as the contact data behind it, and contact data degrades continuously. Patients change mobile numbers, change email addresses, move, and change insurance. None of these events generate a notification to the practice.

The compounding factor is preferred contact method. A practice that only has a landline for a patient who exclusively uses text is not going to reach them, and the recall attempt will be recorded as 'no response' rather than 'wrong channel'. Over a few years, a meaningful share of a practice's supposedly active patient base is unreachable, and the list still shows them as due.

• Wrong or disconnected phone number recorded at intake and never re-confirmed.
• No mobile number on file, only a landline.
• Preferred contact method never captured, so outreach defaults to the channel the practice prefers.
• Preferred language not recorded, so messages go out in a language the patient does not read comfortably.
• Patient moved practices and never told anyone, so they sit in the list indefinitely.

How intake quality determines recall performance

Recall is downstream of intake in a way practices rarely connect. Every field that makes recall work (mobile number, preferred contact method, preferred language, email) is captured once, at intake, and is then relied on for years.

If intake captures a mobile number and a stated preference for text, recall outreach lands. If intake captures only a home phone because that is what the paper form asked for first, every recall attempt for that patient for the next decade is fighting the original data collection. Practices trying to fix recall performance usually start with the messaging cadence; the higher-leverage fix is often the quality of the record created on day one.

Measuring recall health

Two numbers describe a recall system. Hygiene reappointment rate is the percentage of patients who leave with their next visit booked, a direct measure of pre-appointing discipline. Active patient count, usually defined as patients seen in the last eighteen months, measures whether the base is growing or being replaced. A practice adding new patients steadily while the active count stays flat is losing patients out the back at the same rate, and recall is where that leak lives.

Frequently asked questions

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