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Crown Workflow: Veneers - No-Prep

The following workflow outlines the steps involved in no-prep veneers.

Overview

No-prep veneers are an excellent choice when the goal is to make subtle enhancements to a tooth’s shade or shape. This conservative preparation style is ideally suited for teeth that are already properly aligned and do not have significant gaps or diastemas between them. Additionally, no-prep veneers are a great option when only a minor color change (0-1 shades) is desired to improve the overall appearance of the smile.

Prerequisites

  • Teeth are no more than 1 color shift in shade than desired result

  • Any necessary ortho is already complete

  • No significant changes to occlusion are required

Technology & Materials

  • IOS scanner or PVS impression material
  • Stock impression tray
  • Adjustment burs/drills
  • Bonding agents
  • Resin-based cement of choice
  • Optional: Reduction guide

 
Workflow Steps for Digital Impressions for Crowns 

Step Instructions Image
1.

Begin with an in-depth patient consultation to discuss goals, expectations, and desired changes in tooth color and contour.

It’s important to manage patient expectations, contrasting real procedures with quick TV makeovers, emphasizing the importance of doing things the right way rather than the quick way.

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2.

Take the following photos with the patient standing up:

  • Full-face full-smile

  • Full-face retracted smile

  • Optional: Full-face profile

 2
3.

Select appropriate veneer material and determine final shade specifications. Capture color photographs with shade tabs and include stump shade references for best results.

 3

Important: Stump shades are critical for proper veneer fabrication, as any discrepancy between the stump shade and desired veneer shade can cause inaccurate shade matching.
4.

Capture upper and lower impressions and bite. You may either:

  • Capture IOS scan of upper, lower, and bite, OR

  • Capture physical impression and bite

     

 4
5.

Send your records to ROE and complete the Rx via www.roedentallab.com/upload. If using IOS, you may submit your scans via the IOS portal, OR export your .STLs and upload to the ROE portal.

5

 
6.

Create and present a diagnostic proposal based on collected records, producing a physical printed model that demonstrates the final contour and anticipated results for patient approval.

6

 
7. Optional: You may utilize a reduction guide for precise preparation, ensuring optimal thickness and fit for the final restorations. 7

 
8.

Prep the veneers to the recommended specifications below:

  • Facial: 0.5 - 0.7 mm

  • Margin: 0.3 mm chamfer margin at or slightly subgingival

  • Incisal edge: 0.75 - 1.5 mm, 90° butt joint is preferred

  • Extend prep into the interproximal, halfway through the contacts

 8

Important: The incisal can also be layered if the tooth is being lengthened, but facial incisal plane must still be prepped back.

It is important to note that a minimal facial prep can be used if it is acceptable to build out the veneer to >.5mm, for example, a .3 mm prep with a final veneer thickness of .5mm.
9.

Clean the prepped teeth using a proxy paste.

 9

 
10.

Proceed with temporization to allow patients to evaluate phonetics and function, making any necessary adjustments based on their feedback. Ensure the veneers have a passive fit.

 10

Important: Pay special attention to lower veneers during the temporary phase, carefully assessing interference and wear patterns while making adjustments based on patient feedback regarding bite comfort and smile esthetics.
11.

Optional: If significant changes occur from the initial diagnostic stage, take new scans or impressions to ensure accurate final results and documenting with additional photographs as needed.

Obtain final approval from both doctor and patient regarding function and esthetics before proceeding with permanent veneer placement.

 5
12.

Etch the prepared teeth and prepare the veneers for cementation using a hydrofluoric acid etch and silane coupling agent.

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13.

Apply bonding agent to the etched prepared teeth, but do not cure.

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14.

Cement the final veneers to the prepared teeth using your choice of resin. Cure according to the manufacturer’s recommendations.

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15.

Clean off excess cement and polish to completion.

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