Practice operations6 min read
What to Do When a Lab Case Is Late for the Seat Appointment
A step-by-step workflow for front desk teams when a lab case won't arrive on time: how to catch it early, question the lab, call the patient, and refill the chair.

Every practice that sends cases to a lab will eventually have one that is not there when the patient is. The delay itself is often out of your hands. What you control is how early you find out and what happens in the next hour. A practice that learns about a late crown on the morning of the appointment loses chair time and patient goodwill. A practice that learns three days earlier can usually move the patient, refill the slot, and keep the schedule intact.
This is a workflow for the front desk and office manager to use when a case is running late. It assumes you already have some way of tracking cases. If you want that part first, start with a routine of checkpoints before seat appointments. This article covers what to do when a checkpoint fails.
Define "late" before it happens
Most offices treat a case as late only when it is not on the counter at appointment time. That is far too late to act. Set a trigger date instead: the day by which the case should be physically in your office, or at least shipped with tracking, to keep the seat appointment safe.
A common approach is to set the trigger one to two business days before the seat date. The right number depends on your lab's shipping method and distance, so use your own history. Put the trigger date on the schedule or in your task system, not in someone's memory.
Once you have a trigger date, "late" has a clear meaning: the case has passed its trigger date without being received or confirmed shipped.
Step 1: Find out early with a daily list
Once a day, ideally during the morning huddle, someone pulls the seat appointments for the next five business days and assigns each case one of three statuses:

- In the office and checked. The case has arrived and someone has confirmed it is the right patient, right restoration, and right shade or material per the prescription.
- In transit with tracking. You have a carrier and a tracking number, and the expected arrival is before the trigger date.
- Unknown. No tracking, no confirmation, or no recent word from the lab.
Anything in the third group gets acted on that same day. Do not wait to see whether it shows up.
Step 2: Ask the lab specific questions
A vague message like "Where is our case?" gets a vague answer. When you contact the lab, ask for these things:
- What is the current status: in production, in quality check, waiting on something, or shipped?
- What is the revised ship date, and what shipping method will be used?
- Is the lab waiting on anything from us, such as a clarification, a new scan, or a missing prescription detail?
- Can the case be expedited, and if so, is there a fee or a different shipping cost?
- Can you send the tracking number as soon as it ships?
Question three matters more than most offices expect. Sometimes the lab has already sent a question that is sitting in an inbox or portal message nobody has read. Check your own messages before assuming the delay is on the lab's side.
Get the answers in writing when you can, and log who you spoke to, when, and what they said. If the date changes again, you will want that record.
Step 3: Decide whether to hold, move, or adapt
With a revised date in hand, compare it to the appointment. A simple rule keeps decisions consistent:
- Revised arrival is comfortably before the seat date. Keep the appointment. Re-check the day before.
- Revised arrival lands on the day of the appointment or later. Reschedule now. A same-day arrival leaves no room for inspection or a problem at the bench.
- No answer from the lab. Set a deadline, such as noon, to hear back. If you don't, treat the case as moved and start rebooking.
Anything with a clinical dimension belongs to the dentist. If the patient is in a temporary and the delay will stretch longer than planned, the front desk should not guess whether that is acceptable. Bring the dentist the facts (original date, new date, patient name, what the patient currently has in place) and let the clinician decide whether anything else is needed.
Step 4: Call the patient once, with a plan
The best patient call does three things: tells the truth, offers a new time, and explains what to do in the meantime. Make the call as soon as the decision is made, and have two or three alternative slots in front of you before you dial.
A script that works:
"Hi, this is Maria from Dr. Lee's office. The crown for your Thursday appointment hasn't arrived from the lab yet, and I'd rather tell you now than have you make the trip for nothing. We can move you to next Tuesday at 9:00, which gives us a day of margin once it arrives. Does that work? And if anything feels off with your temporary before then, call us right away and we'll get you in."
Some habits to avoid:
- "We'll call you when it comes in." This leaves the patient with no plan and creates a callback you may forget.
- Naming the lab and blaming it. The patient's relationship is with your practice.
- Improvising care advice. If the patient needs instructions about a temporary, relay what the clinician has told you to say.
If the patient cannot do the new time, offer one more option, then book a tentative slot and note the follow-up.
Step 5: Protect the chair time
The opened slot is the second cost of a late case. Keep a short ready list of patients who could fill it. That might include:
- Patients whose cases are already in the office and checked
- Patients who asked to be called if an earlier time opened up
- Shorter procedures the dentist can do in the gap, such as adjustments or a recheck
The ready list only works if someone owns it. Assign it to one person, and update it when cases arrive.
Step 6: Log it and look for patterns
Keep a simple late-case log with these columns: date, lab, case type, promised date, actual date, cause, and outcome (kept or rescheduled). For cause, use plain categories: lab production, shipping, our information was incomplete, we sent it late, or we scheduled too tightly.

Review the log once a month for fifteen minutes. You will likely notice that some delays trace back to your own side: an incomplete prescription, a scan that needed to be redone, or a case sent later in the week than planned. Those are the easiest to fix. You may also see that one lab or one case type is late more often than others, which tells you where to add buffer or whether to rethink a lab relationship.
Small changes that reduce repeats
- Add buffer by case type. Simple restorations and multi-step cases do not need the same margin. Adjust based on your log, not guesses.
- Mind your send day. Check your lab's cut-off times and weekend handling so a case sent late in the week does not sit idle.
- Ask for ship confirmation as standard. A tracking number removes the unknown category.
- Ask labs how they handle delays. When you evaluate a lab, ask how and when they tell you about a slip. A lab that warns you early is worth more than one that is occasionally faster.
If you are comparing labs on this, a marketplace like Dintle lets you look at labs side by side with per-case prices up front, and track orders after you send them, which helps with the "unknown" status problem.
The takeaway for this week
Pick a trigger date rule, start the daily five-day look-ahead, and write down the five questions you will ask the lab. Those three changes alone move most late-case discoveries from the morning of the appointment to days before it, and that is where rescheduling stops being a scramble.