
If Sentinel already has a usable 3D model of your teeth on file, you may be able to reorder a night guard without taking another dental impression.
That stored model gives our laboratory a digital record of the dental anatomy used for your earlier order. When your teeth have not meaningfully changed, the same record may be used as the starting point for a future appliance.
What Is a Saved 3D Dental Model?
A 3D dental model is a digital representation of your teeth used within the laboratory fabrication process.
The model may originate from a qualifying digital dental scan submitted as an STL or PLY file or from the digital workflow associated with an approved dental impression.
Once that digital record is available in Sentinel’s system, it can make future reorders simpler because the dental anatomy does not necessarily need to be captured again from scratch.
Can I Reorder Without Taking Another Impression?
In many cases, yes.
If Sentinel has your usable 3D model on file and your teeth have not meaningfully changed since that model was created, another impression may not be necessary.
This can be especially useful if your previous guard has worn out, been lost, or you simply want another appliance made from the same dental record.
When Might I Need a New Dental Record?
A saved model represents your teeth at a particular point in time. If your dental anatomy changes afterward, the older model may no longer be the appropriate record to use.
Examples of changes that may matter include:
- orthodontic treatment or noticeable tooth movement,
- new crowns, veneers, implants or restorations that change tooth shape,
- tooth extractions,
- chipped, fractured or significantly worn teeth,
- other meaningful changes in how your teeth fit together.
If something has changed since your previous order, let us know before the reorder is fabricated.
For more detail about when an older dental record may still be appropriate, see Can I Reuse an Old Digital Scan for a New Night Guard?
Will the New Guard Be Exactly the Same as My Old One?
Using the same underlying dental model gives the laboratory the same starting representation of your teeth, but a newly fabricated appliance should not be described as an exact duplicate in every respect.
Each guard is fabricated and finished as an individual appliance. Material choice, thickness, product type and normal production variation can all influence how a new guard feels compared with an older one.
The saved model helps preserve continuity in the dental record; it does not eliminate normal laboratory review or finishing.
Can I Choose a Different Night Guard When I Reorder?
Having a saved dental model does not necessarily mean you have to reorder the exact same night guard configuration.
Depending on the appliance and your current needs, you may be able to select a different Sentinel night guard type or thickness while still using the existing dental model.
If you are unsure which option to choose, our custom night guard collection shows the currently available styles.
How Do I Reorder Using My Saved Model?
When placing your new order, indicate that Sentinel already has your dental record on file rather than starting a new impression workflow.
Our team can then locate the existing model and confirm that the order can proceed from the saved record.
What If My Original Order Used a Digital Scan?
The same general principle applies.
Sentinel can retain submitted digital dental scan files for future reorders. If the scan still represents your current teeth, it may be possible to use that record again rather than obtaining another scan.
If you have a digital scan that has never been submitted to Sentinel, start with our guide to sending an STL or PLY digital dental scan for a custom night guard .
Why Saving the Digital Model Matters
The practical benefit is continuity.
Instead of recreating the same dental record every time you need another appliance, a stored 3D model can remain available as a reference for future fabrication when the teeth have remained stable.
It is one of the quieter advantages of a digital laboratory workflow: the useful part is not simply that the model is digital, but that it can be retained and revisited later.
The Bottom Line
If Sentinel already has a usable 3D model of your teeth and your dental anatomy has not meaningfully changed, you may be able to reorder without taking another impression.
If your teeth have changed since the model was created, a new impression or digital scan may be needed before fabrication.
Not sure what Sentinel has on file? Contact us before starting over. We can check your previous record and help determine the appropriate next step.