One article that clearly explains the three mainstream technologies Choosing the right one comes down to just two points
Nowadays, when you visit a dental clinic, intraoral scanning has become the standard way to take impressions. No more sticky impression materials-within a few minutes the scanner generates a 3D model of your teeth. It's convenient and comfortable.
Many people still only know that "it's useful" or keep wondering "which type should I choose." In reality, the core principle of intraoral scanners is quite simple. You don't need to rank the technologies as better or worse-just grasp two key points and you can choose correctly.
Today we explain everything in plain language, without complicated jargon or ranking which technology is superior. We simply clarify the differences among the three mainstream intraoral scanning technologies and the core logic for selecting equipment. After reading this, you'll understand clearly.
All Intraoral Scanners "Recreate Teeth with Light"
No matter which type of scanner it is, the core logic is the same: optical technology captures every detail of the tooth surface, then computer algorithms stitch the data into a 3D model that matches the real teeth.
Simply put, it's like using a "special 3D camera for teeth." The only difference between scanners is the way they "take the photo." There is no absolute good or bad-only which method better matches your needs.
One reassuring note: intraoral scanners use optical technology, just like taking a photo with your phone. There is no radiation at all. Elderly people and children can use them without any concern.
1. Confocal Technology
(Representative brand: 3Shape)
Principle: The tip emits countless ultra-fine laser beams that precisely focus on every point of the tooth surface-like carefully examining every groove and gap with a magnifying glass.
It filters out blurry light and only receives the accurately focused reflected light, so the collected data is extremely detailed and the resulting 3D model fits the teeth very closely.
Best suited for: Treatments that demand high data precision, such as orthodontics, implantology, and crown restorations, where better matching of treatment needs is required.
2. Laser Triangulation Technology
(Representative brands: Planmeca, Frequence Tech / 频泰光电)
Principle: The tip projects a laser beam onto the tooth, forming a small light spot. A sensor receives the reflected light and calculates the shape and position of the tooth by measuring the angle between the projected and reflected laser.
Advantages: Fast scanning speed-single teeth can be completed in a few seconds, and a full-arch scan usually takes only 1–3 minutes. Accuracy is also sufficient for most routine clinical needs.
Best suited for: Everyday treatments such as fillings, conventional crown restorations, and orthodontics-efficient and practical.
3. Structured Light Imaging Technology
(Representative brands: MEDIT, Longcheng / 朗呈, and many modern Chinese brands)
Principle: Instead of laser, it projects a light pattern with special textures. When this patterned light hits the uneven tooth surface, it deforms.
The camera in the tip captures the deformed light and shadow, and algorithms reconstruct the 3D shape of the teeth. Operation is convenient, and it can also restore the true color of the teeth without needing extra powder.
Best suited for: Routine impression needs such as fillings, simple tooth restorations, and teeth whitening (custom whitening trays). Easy to learn and operate.
Summary
Key Takeaways: When Choosing an Intraoral Scanner, Focus on These Two Points
Match the technology to your clinical needs There is no ranking of which technology is superior. Choose according to the types of cases you handle most often-the technology that fits your requirements is the right one.
Pay close attention to service and support Beyond the technology itself, focus on pre-sales training (so doctors can operate proficiently), after-sales maintenance (to keep the device running stably), and response time (to solve unexpected problems quickly). High-quality service is what allows the equipment to truly deliver its value.
After reading this article, whether you are a patient wanting to understand intraoral scanning or a dental professional selecting equipment, you can grasp the essentials, avoid being confused by complex concepts, and confidently choose and use the right scanner.
Looking for a reliable, easy-to-use intraoral scanner with strong support? Aident Technology's AI-30 Intraoral Scanner offers true 10 μm accuracy, powder-free true-color scanning, ultra-lightweight design (only 156 g), anti-fog heating, and full open-system compatibility. Combined with comprehensive training and responsive after-sales service, it helps clinics of all sizes achieve efficient, high-quality digital impressions.
Explore our Intraoral Scanners and complete Digital Dentistry Solutions.
Request a quote today and experience a scanner that is both practical and reliable.
