ABSTRACT
In recent years, the field of dentistry has witnessed remarkable technological advancements, one of which is the development and widespread implementation of intraoral scanners. These devices have revolutionized the way dental professionals capture accurate impressions of patients’ oral cavities, offering several advantages over traditional impression-taking methods. To shed light on the impact of intraoral scanners on dentistry practice, this article explores their mechanism, uses, benefits, and limitations.
KEYWORDS: Application, dentistry, intraoral scanner
INTRODUCTION
Intraoral scanners are advanced devices used in dentistry to capture precise 3D images of the oral cavity, including the teeth and surrounding tissues. These scanners employ sophisticated optics, imaging sensors, and software algorithms to achieve accurate digital impressions. Through mechanisms such as structured light projection, multi-axis movement, and real-time feedback, intraoral scanners enable efficient and comprehensive scanning, contributing to the advancement of digital dentistry and enhancing clinical workflows.[1] This article delves into the mechanism, applications, advantages, and limitations of intraoral scanners, shedding light on their impact on the practice of dentistry.
MECHANISM OF INTRAORAL SCANNERS
The mechanism of an intraoral scanner involves a combination of advanced optics, imaging sensors, and software algorithms to achieve precise and detailed scans.[1,2]
OPTICS AND IMAGING SENSORS
Intraoral scanners utilize advanced optics, such as lenses and mirrors, to capture high-resolution images of the patient’s oral cavity. These optical components are designed to focus on the surface topography of the teeth and soft tissues, allowing the scanner to capture fine details with accuracy.
LIGHT PROJECTION TECHNOLOGY
Many intraoral scanners utilize structured light or confocal imaging technologies to project patterns of light onto the surfaces being scanned. By analyzing the distortion of these projected patterns as they interact with the dental structures, the scanner is able to create precise 3D surface maps.
REAL-TIME FEEDBACK AND CAPTURE
The mechanism of an intraoral scanner involves real-time feedback to the user, often in the form of live images displayed on a computer screen. As the user moves the scanner within the oral cavity, the device continuously captures and processes the images, providing immediate visual feedback to ensure comprehensive coverage and data quality.
MULTI-AXIS MOVEMENT
Intraoral scanners are designed with a maneuverable head or tip that allows for multi-axis movement, enabling the user to access and scan all areas of the oral cavity. This flexibility is essential for capturing the full dental arch, including the posterior regions that can be challenging to reach with traditional impression techniques.
SOFTWARE ALGORITHMS AND DATA PROCESSING
The captured 3D data from the intraoral scanner is processed using sophisticated software algorithms that stitch together individual images to create a seamless digital model. These algorithms are designed to account for factors such as motion artifacts, reflection interference, and occlusal discrepancies to produce an accurate representation of the patient’s dentition.
WIRELESS AND PORTABLE DESIGN
Modern intraoral scanners often feature wireless connectivity and portable designs, allowing for greater freedom of movement during the scanning process.
APPLICATIONS OF INTRAORAL SCANNERS
Intraoral scanners have found wide-ranging applications across different fields of dentistry, revolutionizing the way oral impressions are taken and utilized. Some key applications include[1,3,4,5]:
PROSTHETIC AND RESTORATIVE DENTISTRY
In prosthodontics and restorative dentistry, intraoral scanners are used to capture precise digital impressions for the fabrication of crowns, bridges, and dental implants. These digital impressions eliminate the need for traditional impression materials, reducing patient discomfort and associated inaccuracies.
ORTHODONTICS
Orthodontists utilize intraoral scanners to create digital models of patients’ dentition, allowing for the accurate planning and fabrication of orthodontic appliances such as braces, aligners, and retainers. The digital impressions provide a detailed view of the teeth and occlusal relationships, aiding in the assessment and treatment planning for orthodontic cases.
PERIODONTICS AND ORAL SURGERY
Intraoral scanners are utilized in periodontal and surgical procedures to capture detailed images of soft tissue architecture, gingival contours, and occlusal relationships. This aids in treatment planning for procedures such as crown lengthening, soft tissue grafting, and guided bone regeneration.
PEDIATRIC DENTISTRY
In pediatric dentistry, intraoral scanners provide non-invasive impressions, engage young patients with 3D visualizations, aid in interceptive orthodontics, and encourage participation in oral care. By incorporating this technology, dentists can deliver precise, patient-centered care, fostering positive dental experiences for children and their families.
ADVANTAGES OF INTRAORAL SCANNERS
The adoption of intraoral scanners in dental practice offers several advantages over traditional impression-taking methods, contributing to improved efficiency, accuracy, and patient experience. Some of the key advantages include[2,4,6]:
ACCURACY AND PRECISION
Intraoral scanners produce highly accurate digital impressions, eliminating common errors associated with traditional impression materials, such as distortions, voids, and discrepancies. This precision contributes to better-fitting restorations and improved treatment outcomes.
PATIENT COMFORT
The use of intraoral scanners reduces patient discomfort associated with conventional impression materials, such as alginate or polyvinyl siloxane. Patients appreciate the non-invasive nature of digital impressions, leading to a more positive overall experience during dental procedures.
TIME EFFICIENCY
Digital impression-taking with intraoral scanners is faster and more efficient than traditional methods, as it eliminates the need for material setting times and impression tray adjustments.
ENHANCED WORKFLOW INTEGRATION
Digital impressions obtained from intraoral scanners can be seamlessly integrated into computer-aided design and computer-aided manufacturing (CAD/CAM) systems for the efficient fabrication of dental restorations. This streamlined workflow reduces turnaround times and enhances the overall efficiency of treatment procedures.
LIMITATIONS OF INTRAORAL SCANNERS
While intraoral scanners offer significant advantages, they are not without limitations, and there are certain factors that need to be considered in their implementation[1,6,7]:
COST
The initial investment in acquiring intraoral scanners and associated digital technologies can be substantial.
MOISTURE CONTROL
Maintaining a dry field during scanning is crucial to ensure accurate digital impressions. Saliva and moisture can interfere with the scanning process, requiring effective moisture control techniques and patient cooperation.
DATA SECURITY AND PRIVACY
Given the digital nature of the impressions, issues related to data security, patient privacy, and compliance with regulations concerning electronic health records must be carefully addressed to ensure patient confidentiality and protection of sensitive health information.
FUTURE PROSPECTUS
The further prospects of intraoral scanners include improved accuracy, faster scanning speeds, enhanced user-friendly interfaces, and integration with other digital technologies like CAD/CAM systems and 3D printing.
CONCLUSION
Intraoral scanners have emerged as invaluable tools in modern dentistry, offering numerous benefits in terms of accuracy, efficiency, and patient comfort. Their applications span across various disciplines within the field of dentistry, transforming the way dental professionals capture, analyze, and utilize intraoral data.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
REFERENCES
- 1.Mangano F, Gandolfi A, Luongo G, Logozzo S. Intraoral scanners in dentistry:A review of the current literature. BMC Oral Health. 2017;17:149. doi: 10.1186/s12903-017-0442-x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.Ting-Shu S, Jian S. Intraoral digital impression technique:A review. J Prosthodont. 2015;24:313–21. doi: 10.1111/jopr.12218. [DOI] [PubMed] [Google Scholar]
- 3.Galhano GÁ, Pellizzer EP, Mazaro JV. Optical impression systems for CAD-CAM restorations. J Craniofac Surg. 2012;23:e575–9. doi: 10.1097/SCS.0b013e31826b8043. [DOI] [PubMed] [Google Scholar]
- 4.Richert R, Goujat A, Venet L, Viguie G, Viennot S, Robinson P, et al. Intraoral scanner technologies:A review to make a successful impression. J Healthc Eng. 2017;2017:8427595. doi: 10.1155/2017/8427595. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5.Abduo J, Elseyoufi M. Accuracy of intraoral scanners:A systematic review of influencing factors. Eur J Prosthodont Restor Dent. 2018;26:101–21. doi: 10.1922/EJPRD_01752Abduo21. [DOI] [PubMed] [Google Scholar]
- 6.Suese K. Progress in digital dentistry:The practical use of intraoral scanners. Dent Mater J. 2020;39:52–56. doi: 10.4012/dmj.2019-224. [DOI] [PubMed] [Google Scholar]
- 7.Lakhia S, Turkyilmaz I, Romanos G. Challenges of integrating intraoral optical scanners into high-volume dental facilities. Compend Contin Educ Dent. 2020;41:554–6. [PubMed] [Google Scholar]