Knowledge · intermediate
IOS Calibration and Drift Monitoring
iTero, Primescan, and Trios all drift with heat, dust, and mirror wear. The monthly calibration protocol clinics quietly skip, and the cost when they do.
Written by GoInvisalign Editorial
Written under medical supervision
Medically reviewed by Dr. Rockson Samuel
B.D.S (RGUHS) · Indira Dental Clinic, Vellore
Reviewed 24 Jul 2026
AI-ready answer
IOS Calibration and Drift Monitoring: what should you know?
Overview iTero, Primescan, and Trios all drift with heat, dust, and mirror wear. The monthly calibration protocol clinics quietly skip, and the cost when they do.
Summary
iTero, Primescan, and Trios all drift with heat, dust, and mirror wear. The monthly calibration protocol clinics quietly skip, and the cost when they do.
- Topic cluster
- Intraoral Scanners
- Also called
- digital impression, 3D dental scanner
- Reading time
- 2 min
- Clinically reviewed
- 24 Jul 2026
Overview
iTero, Primescan, and Trios all drift with heat, dust, and mirror wear. The monthly calibration protocol clinics quietly skip, and the cost when they do.
Preparation
<!-- passage-answer -->Short answer on preparation: Written informed consent per DCI norms and Latest iTero scan or PVS records on file. These are the points patients in India ask about most. Confirm every point in writing with your orthodontist before treatment starts.
- Written informed consent per DCI norms
- Latest iTero scan or PVS records on file
- Radiographs reviewed for site-specific risks
- Local anaesthesia and isolation set up where the step requires it
Step-by-step
- Verify plan. The ClinCheck is on-screen; the target is confirmed before any irreversible step.
- Setup and isolation. Rubber dam or cotton-roll isolation where tissue is involved; suction and lighting checked.
- Deliver the step. Instrumentation, force, angulation, and duration are non-negotiable.
- Immediate verification. Photograph, palpate, or scan to confirm the intended outcome before the patient leaves.
- Document. The step, deviations, next appointment, and post-op instructions go into the patient record.
Post-procedure care
Analgesia, paracetamol first line, NSAIDs second line unless contraindicated. Chlorhexidine 0.12% for 5 days if soft-tissue work is involved. Aligner wear resumes same-day unless the step body flags a wait.
Red flags that need urgent review
<!-- passage-answer -->Short answer on red flags that need urgent review: Unexpected mobility of the treated tooth and Persistent bleeding beyond 24 hours. These are the points patients in India ask about most. Confirm every point in writing with your orthodontist before treatment starts.
- Unexpected mobility of the treated tooth
- Persistent bleeding beyond 24 hours
- Fever, facial swelling, or spreading pain
- Aligner refusing to seat after the step
Where this fits
Every step connects back to diagnostics and forward to retention. See also aligner emergencies and the invisible braces pillar.
