Traditional silicone film extraction, which requires multiple iterations of silicone film extraction, inversion, and subsequent design processing, typically takes 2-4 weeks to complete the entire restorative treatment of a tooth, which is a very slow process with a failure rate of up to 30%. The digital intraoral scanner allows the dentist to scan and obtain a 3D digital model of the teeth directly in the patient's mouth, and then send it to the CAD/CAM platform for design and processing, the fastest time to complete the denture production is only 2 hours. In contrast, the use of digital intraoral scanners greatly improves the efficiency and quality of dental restorations, and is an inevitable trend in the current development of digital oral healthcare.
However, the technical difficulty of intraoral scanner products is very large. Due to the narrow space in the oral cavity, the environment is complex (blood, saliva, etc. on the impact of three-dimensional imaging), and dental restoration of clinical precision requirements (& lt; 50 micron), so the miniaturization of the three-dimensional scanning equipment and the measurement of precision requirements are very high. Even more difficult is that the intraoral scanning must be carried out by the doctor in the patient's mouth from different positions and angles for continuous scanning to get a complete 3D digital model, so reducing the superimposed error of 3D data obtained from different positions is a greater technical challenge.
In the early 1990s, Germany first introduced three-dimensional oral scanning systems, due to the high technical threshold, there are only a few intraoral scanners available for clinical use in the world. In China, only the DL-100 intraoral scanner developed and produced by Guangdong Longchamp Medical has a domestic registration certificate and has been clinically validated.
Guangdong Longcheng Medical Device Technology Co., Ltd ("Longcheng Medical"), founded in October 2013, is a national high-tech enterprise founded by Dr. Lv Jian, who graduated from California Institute of Technology. The company's production base is located in the beautiful Dongguan Songshan Lake National High-tech Industrial Development Zone, and has R&D branches in Los Angeles, USA and Tsinghua University Research Institute in Shenzhen, China. The company focuses on the independent research and development and industrialization of Dr. Lu's handheld 3D scanning technology in the oral healthcare industry, and has successfully developed China's first 3D intraoral scanner, which was awarded the registration certificate of Class II medical device in September 2015 by the State Food and Drug Administration (SFDA), and in March 2017, it was awarded the ISO13485 certification as well as the CE certification. Currently, the company has more than 10 patents at home and abroad, and its main business is the research, development, production and sales of intraoral scanners as well as optical powder spraying in stomatology and other Class II medical devices. Since entering the domestic market in 2016, Lancent DL-100 intraoral scanner has entered the clinical application of famous dental hospitals such as Peking University Stomatology, Four Medical University Stomatology, Wuda Stomatology, etc. In 2017, Lancent DL-100 Intraoral Scanner began to enter the international market, and now it has been sold to Italy, Israel, Japan, Taiwan and other countries and regions, which breaks through the globalization of the market of the domestic digital products. Based on the most cutting-edge intraoral scanning products in the field of dental digitization, Lancent Medical is committed to providing doctors with convenient and fast intraoral modeling, improving patient comfort, providing accurate digital models for denture processing, and realizing a complete digital solution for oral healthcare.
The technical principle of Lancent's intraoral scanner:
The technical aspect of intraoral scanning includes two steps, firstly, the 3D imaging method is used to collect the 3D data point cloud of the tooth surface in a single location; then, during the movement of the intraoral camera, it continuously superimposes the 3D data collected in different locations, and finally forms a complete 3D data model. The DL-100 intraoral scanner uses a special single-lens stereo imaging + multi-aperture beam splitter imaging principle to design the smallest product of its kind. The DL-100 intraoral scanner acquires multi-angle 2D photos of the same tooth surface in a single location, and then obtains an accurate color 3D point cloud at that location by comparing the phase difference.
Features of Lancent Intraoral Scanner
1) Smallest Scanning System
The most innovative and unique feature of Lancent DL-100 Intraoral Scanner is that it uses fewer optical and electronic components to achieve complex 3D imaging requirements, and it is designed to be the smallest oral optical scanning product on the market, with an internal portion of the scanner reaching out to the mouth of only 13mm x 19mm, allowing it to be easily placed in a narrow space. It can conveniently scan any position of the teeth in a small oral cavity. Currently, only a few foreign products are difficult to achieve a small enough miniaturized design.
2 ) WYSIWYG (What You See Is What You Get) color real-time dynamic scanning, high accuracy
LangChem Intraoral Scanner uses the original handheld 3D technology with international leading level to conduct video-based dynamic scanning of the oral cavity, which can achieve ultra-high precision 3D data scanning, scanning accuracy of 20 microns, and can be stabilized to achieve the scanning of the full dental crowns and inlays
3 At the same time, the unique feature point tracking technology allows doctors to more easily move the scanner in the oral cavity and quickly restore the scanner imaging position, which greatly improves the clinical utility of the product;
4) Ultra-clear color 3D model reconstruction
DL-100 adopts a unique three-dimensional reconstruction method, the use of scanning to get the multiple channels of data for the superposition, and ultimately generate high-precision 3D models. The DL-100 uses a unique 3D reconstruction method that utilizes the data from multiple channels of the scan to overlay and ultimately generate a highly accurate 3D model. Users can view accurate color 3D models of the scanned teeth in the interface, and doctors can rotate, zoom, etc. to view the scanned models, better distinguish and mark the gingiva, and set the seating channel. Thus, according to the patient's specific situation, to develop an exclusive treatment plan for them;
5) Open data format
Compared with similar foreign products, the 3D data output format of this project is an industry-standard open STL file, which can be used by any CAD/CAM processing platform that has been widely used in the prosthetic processing end at present, and gives the user a great freedom of choice on the choice of material and processing side. This gives users great freedom in the choice of materials and processing methods. At the same time, equipped with PL900S cutting machine, Lancent's rapid chairside system, based on the smallest diameter 0.4mm needle and the original "carving" cutting strategy, can complete the cutting of a fine restoration in 15 minutes
.