What are common causes of digital scans failing to capture margins, and how can it be mitigated?

• A. Motion, reflections, occlusal contacts; mitigate with proper scout scanning, instruct patient, and use re-scan.
• B. Low battery.
• C. Weak lighting.
• D. User unfamiliarity.

Answer: (D)

The main idea here is that success with digital margins hinges on the operator’s skill and familiarity with the scanning process. When a clinician or lab technician isn’t confident with how to capture a margin, where to position the scanner, how to handle reflective surfaces, and how to manage patient movement, margins are often missed or blurred. This makes user unfamiliarity the most impactful factor across different scenarios, because a knowledgeable user can anticipate and mitigate these issues with proper technique, workflow, and practice.

Training and experience directly address this, so the best way to reduce margin captures failures is to develop a solid scanning workflow: use scout scans to map the area before the full capture, give clear patient instructions to minimize movement, maintain stable scanner handling, manage reflections and moisture, and perform a re-scan when data gaps are detected. While factors like motion, reflections, occlusal contacts, battery level, or lighting can contribute in the moment, they tend to be secondary symptoms that improve with better technique and familiarity.