Henan Forever Medical provides professional oral scanning equipment!
The digitization of the oral cavity usually refers to the oral scan (intraoral scanner) and CBCT (cone beam CT). Among them, the intraoral scanner is also called an electronic impression scanner, which can directly scan the patient's oral cavity to obtain three-dimensional information. According to estimates from the World Journal of Dental Technology, in 2016, approximately 5%-10% of dental practitioners used intraoral scanners to obtain digital impressions.
Oral digital impression technology can be divided into two categories: indirect method and direct method. The "indirect method" is the dental and jaw plaster model and the impression scanning technology. In recent years, the rise of intraoral digital impression technology, that is, "direct method" impression technology, has brought a new revolution to the clinical diagnosis and treatment model of stomatology, and the key link is the intraoral scanner.
The clinical practice is still dominated by traditional impression techniques, that is, taking impressions using impression trays and impression materials. It is indisputable that digital impression brings many advantages to clinicians, such as model analysis, prosthesis production, precision requirements of treatment design, etc., laying the foundation for the realization of digital oral diagnosis and treatment in the future. Henan Forever Medical will introduce and sort out the advantages and principles of oral scanning technology, as well as mainstream equipment and companies on the market.
Intraoral scanning is the basis for the realization of oral digital diagnosis and treatment
The intraoral scanner uses a small probing optical scanning head to directly obtain the three-dimensional topography and color texture information of the soft and hard tissue surfaces such as teeth, gums, and mucous membranes in the patient's oral cavity.
This method subverts the traditional operation process of making impressions and reproducing plaster models in clinic, without the assistance of plaster models and laboratories, and saving a lot of tedious traditional steps, such as waiting for the impression material to solidify, sterilizing the impression, and pouring the model. At the same time, the consumption of materials and labor is reduced, and the digital dental model can be directly obtained by the clinician, which simplifies the clinical operation process.
Unlike traditional models, a number of intraoral changes such as tooth movement, tooth tilt, tooth rotation, retraction and wear can be visualized with the digital model. For this purpose, a three-dimensional comparison between the initial clinical examination and subsequent intraoral scans is also required by a software tool.
Many intraoral scanning systems can generate photorealistic color models, and thus better obtain information on areas such as tooth structure and gum texture. This makes it possible to analyze, for example, changes in the color of teeth and gums, a process that is not possible with plaster casts. Some systems can also selectively perform tooth colorimetry.
Of course, when scanning in the mouth, it will also be affected by head movement and oral environment, such as saliva, tongue, etc., thus affecting the quality of image acquisition.
In addition, the operation experience in a narrow space in the mouth, the scanning accuracy of semi-transparent and highly reflective tooth surfaces, the stitching accuracy of scanned data in the case of large-scale dentition defect or absence, and the scanning suitability of severely malocated dentition, etc. To a certain extent, it will also affect the fitting reconstruction between images.
It must be mentioned that oral scanning optical impressions are not so easy for beginners to operate, because the operator has to follow a complex scanning path to achieve a correct measurement, which requires pre-training.
