# Evaluation of the accuracy of intraoral scanners for nasal digitization: an in vitro three-dimensional comparative study

## TL;DR

This study compares the accuracy of intraoral scanners to traditional methods for capturing the shape of the nose in dental and facial prosthetics.

## Contribution

The study demonstrates that intraoral scanners can accurately capture nasal surfaces, offering a viable alternative to conventional impressions.

## Key findings

- Two of the three intraoral scanners captured the nose with high trueness and precision.
- Intraoral scanners outperformed conventional impressions in capturing nasal surface details.
- Intraoral scanners are a viable option for nasal digitization in maxillofacial applications.

## Abstract

Taking a facial impression is essential in maxillofacial prosthetics and in dentistry when designing a dental prosthesis. This study explores the use of intraoral scanners as an alternative method for recording the surface of the face, specifically the nose. A soft head model was scanned using three different intraoral scanners, and the accuracy with which they captured the nose was compared with that obtained by conventional impressions. Two of the three scanners successfully captured the nose, demonstrating trueness and precision superior to that of conventional impressions. Intraoral scanners are a viable option for capturing the surface of the nose.