Intraoral Scanner Integration:
Optimizing Your Scan-to-Aligner Workflow.

1. Introduction

The transition from PVS impressions to intraoral scanning has transformed the speed and accuracy of aligner manufacturing. A correctly captured digital scan eliminates the dimensional distortion inherent in conventional impressions, enables real-time quality assessment before the patient leaves the chair, and integrates directly with the Infinity Aligner OKC planning portal — reducing case submission time from days to minutes.

However, the digital workflow introduces its own class of errors — STL file artifacts, stitching failures, incorrect occlusal registration, and inadequate margin capture — that, if undetected, propagate all the way to the manufactured aligner and produce a poor-fitting tray. This guide covers the technical requirements, quality checkpoints, and submission protocols necessary to achieve consistent first-attempt approval of your digital cases.

“A high-quality scan submitted with complete records is processed in 3–5 business days. A scan requiring resubmission adds 5–7 business days. The scan quality protocol is the fastest thing you can invest time in.”

2. Compatible Scanners

Infinity Aligner OKC accepts STL and OBJ files from all major intraoral scanning systems. The following scanners have been validated through our quality control pipeline with zero reported stitching or surface accuracy issues:

3. Scan Protocol

Consistent scan technique eliminates the most common quality control failures before submission. The following protocol is scanner-agnostic and applies regardless of system brand.

1. 01

   Patient preparation

   Retract lips and cheeks adequately. Air-dry each quadrant before scanning — moisture on enamel creates surface artifacts and holes in the STL. Remove all temporary restorations that will not be present in the final aligner-wearing state.

2. 02

   Scan sequence

   Standard: upper arch first (palatal → buccal → lingual), then lower arch (lingual → buccal → facial), then buccal bite registration in centric occlusion. Do not rely on auto-bite detection for aligner cases — capture bite manually in centric.

3. 03

   Extend margins

   Extend the scan 3–4 mm beyond the gingival margin on all teeth. The aligner trim line is cut 1 mm above the gingival crest — insufficient gingival depth leaves no room for accurate scalloping.

4. 04

   Check coverage

   Before ending the scan, visually confirm: all crowns captured to contact points, no black (hole) areas on tooth surfaces, bite registration covers at least one tooth per quadrant bilaterally.

5. 05

   Occlusal bite registration

   Close the patient to maximum intercuspation. Capture buccal bite from both sides. If a functional shift is present, capture both centric relation and MIP positions separately and note this in the submission form.

6. 06

   Export

   Export upper arch, lower arch, and bite as separate STL files. Label: LASTNAME_FIRSTNAME_UPPER.stl / _LOWER.stl / _BITE.stl. Use consistent file naming — our intake system flags inconsistent naming for manual review, adding 24 hours to processing.

4. STL Export Settings

STL file quality is determined by mesh density (triangles per surface area). Too low and the tooth surface is faceted — attachment positions cannot be accurately planned. Too high and the file size exceeds upload limits and strains the planning software.

5. Common Scan Errors & Fixes

The Infinity Aligner QC team returns approximately 12% of submitted scans for correction. The following are the four most common error categories, with their root causes and corrections.

6. Digital Model Quality Control

Before uploading, open the STL files in your scanner software or a free viewer (Meshmixer, 3D Builder, or GrabCAD) and run the following 12-point check. This takes less than 3 minutes and eliminates >90% of QC returns.

7. Case Submission Workflow

The Infinity Aligner OKC submission portal accepts digital cases 24/7. The complete submission package requires:

1. 01

   Digital scan files

   Upper arch STL, lower arch STL, bite registration STL. All files named per convention. Or: upload directly from your intraoral scanner via our portal integration (iTero, TRIOS, Medit supported for direct push).

2. 02

   Clinical photographs

   Minimum 5 views: full face (rest + smile), profile, intraoral (upper occlusal, lower occlusal, right lateral, left lateral, frontal in occlusion). JPG/PNG, minimum 1200 px width.

3. 03

   Treatment objectives form

   Complete the online treatment objectives form: chief complaint, movement priorities (which teeth to move, which to anchor), IPR preference, expansion preference, attachment preference, retainer type.

4. 04

   Radiographs

   Panoramic radiograph required for all cases. Lateral cephalogram required for: deep bite > 4 mm, suspected skeletal Class II/III, skeletal asymmetry. CBCT optional but reviewed if uploaded.

5. 05

   Patient medical history

   Confirm no periodontal disease under active treatment. Note relevant systemic conditions (bisphosphonate use contraindicates intrusion movement). Note missing teeth, implants, bridges.

6. 06

   Submit & confirm

   Once submitted, you receive a confirmation email with case ID. Our QC team reviews within 4 business hours. If the scan passes QC, treatment planning begins immediately. If QC identifies issues, you receive an email with specific correction instructions.

8. Photographs & Bite Records

Photographs are used by our clinical team to verify facial esthetics, incisal exposure, smile arc, and buccal corridor — none of which are visible in a digital scan alone. Inadequate photographs are the second most common reason for case delay (after scan quality issues).

9. Turnaround & Communication

All times are from the moment a complete submission (scan + photos + records + treatment objectives form) passes QC. Incomplete submissions reset the clock.

10. Conclusion

A well-executed digital scan workflow reduces case turnaround, eliminates re-submission delays, and improves aligner fit at the first appointment. The technical requirements are straightforward: correct scanner export settings, thorough surface capture with adequate gingival extension, a proper centric occlusion bite registration, and a complete photograph set. Our 12-point QC checklist, completed before submission, eliminates >90% of the errors that would otherwise trigger a correction request.

Practices new to digital submission typically reach optimal workflow efficiency within 3–5 cases. Our clinical technology support team is available by phone and email to assist with scanner-specific export settings, file naming questions, and portal upload issues. Contact us at Info@infinityalignerok.com or call (405) 769-3373.