Overview: Learn how to adjust monolithic try-ins for dentures and provide feedback to the lab to ensure a proper final fit.
Manage Monolithic Try-In Adjustments
A monolithic try-in is 3D printed in a single color resin and replaces conventional wax-teeth try-ins. Follow these steps to manage the try-in during the patient appointment:
Seat the try-in: Place the monolithic try-in in the patient's mouth to evaluate the initial fit.
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Evaluate for adjustments:
No adjustments needed: If the fit is correct for a full denture, proceed to the final order. No additional scanning is required.
Adjustments required: Use a burr or other tools to adjust the monolithic try-in until the monolithic try-in meets the proper specifications.
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Submit changes:
Full Denture: Scan the adjusted monolithic try-in and the new bite. You do not need to mail the monolithic try-in back to the lab.
Partial Denture: Scan the fit issue if applicable, provide feedback, take a physical bite registration, and mail all materials back to the lab.
Combo Case (Partial and Denture): Follow the analog workflow and mail all materials back to the lab.
Resolve Fit and Retention Issues
If the monolithic try-in is loose, rocking, or too tight, perform the following corrective actions:
Loose fit or rocking: Relieve the base if necessary, perform border molding, and take a reline impression using a light-body wash. Evaluate functional movements and the bite relationship before rescanning.
Tight fit: Gently adjust the monolithic try-in base until the patient is comfortable. If the fit is satisfactory after adjustment, no new impression is required.
Correct Bite and Occlusion Issues
Use a combination of physical adjustments and rescanning to resolve bite issues such as open anterior bites or one-sided contact.
VDO is too open: Adjust the monolithic try-in until the desired Vertical Dimension of Occlusion (VDO) is reached. Take and trim a new bite registration and rescan.
VDO is overclosed: Build up the bite using compound, wax, or expired composite until the desired VDO is reached. Take and trim a new bite registration and rescan.
General Bite Issues: Adjust high contacts aggressively until the patient can close properly. Rescan the upper, lower, and bite (molar to midline on both sides).
Communicate Aesthetic Changes
When the look or aesthetics of the monolithic try-in require changes, use markings, adjustments, and photos to convey the requirements to the lab. Common issues include:
Midline position
Lip support and smile line
Size and shape of teeth
Incisal plane
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