Types of Intraoral Scanners: A Complete Guide for Dentists

Introduction

Digital dentistry is transforming the way clinics diagnose, plan, and treat patients. One of the most revolutionary tools driving this change is the intraoral scanner (IOS) — a device that captures detailed 3D images of a patient’s teeth and gums. By replacing traditional impressions with digital accuracy, intraoral scanners offer superior comfort, speed, and precision.

In this article, we’ll explore the main types of intraoral scanners, how they work, and the key factors to consider when choosing one for your dental practice.

1-What Is an Intraoral Scanner?

An intraoral scanner is a handheld digital device used to create a 3D digital model of the oral cavity. The scanner projects structured light or laser beams onto the teeth and soft tissues, capturing reflected data through sensors. This data is then processed by advanced software to form an accurate digital impression — ready for CAD/CAM design, prosthetic fabrication, or treatment planning.

2-Types of Intraoral Scanners Based on Technology

a-Structured Light Scanners

Structured light scanners project a known light pattern onto the tooth surface. By measuring the distortion of the pattern, the scanner reconstructs the surface geometry.

• Advantages: High accuracy, fast capture speed, and suitable for most clinical applications.
• Popular examples: Medit i700, 3Shape TRIOS series.

b-Laser Scanners

Laser-based intraoral scanners use one or more laser beams to capture surface topography.

• Advantages: Excellent depth accuracy and high precision even in reflective or translucent areas.
• Disadvantages: Slightly slower and more sensitive to movement compared to structured light systems.
• Examples: iTero Element series, Dental Wings scanners.

c-Confocal Imaging Scanners

These scanners capture multiple focal points simultaneously to build a precise 3D model.

• Advantages: Exceptional accuracy and depth of field.
• Disadvantages: Typically higher cost; may require more processing time.
• Examples: Carestream CS 3800, Planmeca Emerald S.

3-Types of Intraoral Scanners Based on Application

a-Chairside Scanners

Designed for direct use in clinics, chairside scanners integrate easily with CAD/CAM systems. Dentists can scan, design, and mill restorations on-site — providing same-day dentistry solutions.

• Best for: Single restorations, veneers, crowns, and bridges.

b-Laboratory Scanners

Though not strictly intraoral, dental labs use similar scanning technology to digitize physical models or impressions.

• Best for: High-volume restorative and prosthetic workflows.

c-Hybrid Scanners

Some systems offer both chairside and laboratory functionality, making them ideal for clinics that handle a wide range of digital cases.

4-Key Features to Compare Before Buying

When evaluating an intraoral scanner, consider the following specifications:

• Accuracy: Essential for fitting precision.
• Speed: Affects patient comfort and workflow efficiency.
• Weight and ergonomics: Lighter devices reduce operator fatigue.
• Powder requirement: Modern scanners are powder-free for simplicity.
• Open vs. closed system: Open systems integrate with multiple CAD/CAM and milling software; closed systems limit workflow flexibility.
• Wireless capability: Enhances mobility and comfort.
• Software and updates: AI-driven software can automatically remove artifacts and improve scan quality.

5-Advantages of Using Intraoral Scanners

• Improved patient experience – no messy impression materials.
• Time efficiency – faster scanning and digital transmission to the lab.
• Enhanced accuracy – fewer remakes and better fit for restorations.
• Digital storage – secure, easy archiving of patient data.
• Integration with digital workflows – ideal for implantology, orthodontics, and restorative dentistry.

6-Leading Brands in the Market

Several global manufacturers offer reliable and high-performance intraoral scanners:

• 3Shape (TRIOS series) – high accuracy, excellent software.
• Medit (i700, i900) – affordable, open system, great usability.
• iTero (Element series) – strong in orthodontics and Invisalign integration.
• Carestream Dental (CS series) – versatile with imaging solutions.
• Alliedstar – known for excellent quality and value, suitable for clinics seeking innovation and affordability.

7-The Future of Intraoral Scanning

The next generation of intraoral scanners will feature AI integration, real-time color rendering, and cloud connectivity. These advancements will make workflows even more streamlined, supporting faster communication between clinics and laboratories while improving patient care quality.

Conclusion

Intraoral scanners are no longer optional — they’re an essential part of modern digital dentistry. Whether you’re focusing on implantology, prosthetics, or orthodontics, choosing the right scanner will enhance your workflow, improve patient satisfaction, and ensure long-term efficiency.

At West Dent, we provide a range of advanced intraoral scanners and expert consultation to help clinics transition smoothly into digital dentistry.
Contact us today to learn more about the best solutions for your practice.