Dental stock reorder levels: a worked example

For a routine consumable, a useful starting point is expected use while a delivery arrives, plus a chosen buffer. That gives a reorder point: the level at which someone should review replenishment. It does not tell you that a particular product is suitable or how much clinical or emergency stock you must keep.

Use this worked example for ordinary planning. Critical products, medicines and specialist materials need their applicable clinical, storage and procurement requirements reviewed separately.

Start with one unit everyone understands

Write down whether the count means individual items, boxes or cases. Record the supplier's pack size separately. Ten boxes and ten cases are different orders, even when the product name is identical.

Count stock that is available for the intended use. Distinguish unusable, expired, quarantined or restricted stock under your procedures. Record deliveries and movements between rooms rather than assuming everything is still in the main cupboard.

NHS Specialist Pharmacy Service describes unit mistakes, unrecorded transfers and unexplained adjustments as sources of stock discrepancies. Its advice is written for medicines inventory in secondary-care pharmacy; these are useful record-checking lessons, not a dental consumable minimum. See its inventory guidance.

Calculate a starting reorder point

Reorder point = average usage per working day × delivery lead time in working days + chosen buffer.

Input	Fictional example	Check
Normal use	2 boxes per working day	Based on actual recorded usage
Lead time	5 working days	From order approval to usable delivery
Buffer	4 boxes	A stated practice assumption
Reorder point	2 × 5 + 4 = 14 boxes	All quantities use boxes and working days

The four-box buffer is illustrative. It is not a clinical recommendation or a universal safety allowance. A simple average may be unsuitable when usage or supply varies greatly.

A reorder point is not an order quantity

Suppose the fictional practice has 10 usable boxes and none on order. The stock is below the 14-box point, so a review is triggered. Ordering four boxes would take it to 14 before allowing for use during delivery; that is not automatically enough.

The manager also needs a desired level, expected usage, delivery timing, expiry and supplier pack size. If the supplier sells cases of ten boxes, the order quantity must use cases explicitly. Never copy “4” from a boxes calculation into a cases field.

Decision	Question
Should we review an order?	Has the usable stock position reached the reviewed trigger?
How much should we buy?	What amount covers the agreed period without unreasonable waste or storage problems?
What is already coming?	Are existing orders confirmed, and will they arrive in time?
Can we use what arrives?	Are suitability, storage and usable shelf life acceptable?
Who approves it?	Is the proposed quantity and supplier within the person's authority?

Test the rule against an awkward week

Use a delayed delivery and a busier week as planning scenarios. If the fictional lead time becomes eight working days, the same calculation becomes 2 × 8 + 4 = 20 boxes. That shows the effect of the changed assumption; it does not prove that 20 is the right answer in every circumstance.

Do not repeatedly add buffers without reviewing the resulting stock. Excess stock may expire or occupy needed space. For infrequently used or critical products, involve the appropriate lead rather than applying the routine formula unchanged.

Investigate differences before changing the threshold

If the system shows 18 boxes and the physical count finds 12, investigate deliveries, issues, transfers and unit conversions. Adjusting the reorder point to hide the difference would make the warning less meaningful.

Keep the reason for a correction and name its reviewer. Recheck assumptions when sessions, services, suppliers or pack sizes change. A dated explanation is more useful than an unexplained minimum copied from the previous manager.

Keep alerts, approval and purchasing separate

Dentorb's inventory page describes stock movements, low-stock alerts and assigned equipment. It labels one-click ordering and automatic reordering as planned. Confirm current functionality before including either in your purchasing process.

An alert should lead to a reviewed decision; it should not imply that an order has been submitted or received. Use a named practice task for an unresolved count or supplier query. If you are organising equipment rather than consumables, use the equipment-register comparison to keep ownership and maintenance responsibilities clear.

Start with one regularly used item. Reconcile its units, observe its usage and check delivery timing. A small rule that everyone can explain is more useful than dozens of untested minimums.