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The digital orthodontics and its applications

The modern orthodontic technology has now incorporated in the daily work the digital depiction, analysis and processing for the improvement of the correctness of the orthodontic prognostics, the planning and results on the therapy.

With the use of special software based on algorithm binary sequences, the specialized technologist is now in a position to present with precision the possible movements of the teeth and to submit to the attending physician in collaboration predictions that follow the requests and their treatment plan for the respective patients.

Two examples that changed the orthodontic way of approaching and caring of the cases based on the 3D digital orthodontics, are the digital scanners and the digital software for orthodontic analyses.

As a modern technology laboratory, we are obliged to analyze and separate basic concepts in the field of orthodontic digitalization.

The digitalization in Orthodontic technology refers to scanners (digital scanners) and CAD systems - computer aided design.

Digital machines usually use the visible light and via intraoral process (cameras), they impress directly every detail of the oral cavity in stl file format in order to create a very precise three-dimensional digital depiction on our computer screens.

The STL file (abbreviation for “stereolithography”), is a file format integrated in the CAD software of the stereolithography.

CAD systems (Computer-aided design) are called the systems that create, edit, analyze and optimize a design. Each CAD software is used in order to increase the designer’s productivity, to improve the quality of the design and the communications via its documentation and to create a database for any design.

The STL file has various parallel etymologies, such as “Standard Triangle Language" and "Standard Tessellation Language". This file format is supported by many software types. It is widely used for quick creation of prototypes (Rapid Prototyping), that is creation and printing of 3D objects. STL files describe only the geometry of the surface of a 3D object without any representation of the real color, texture or even of the dimensioning of the model objects that in our case are the orthodontic models.

The use of these 3D models leads not only to diagnosis but also to the change of the treatment plan.

The result is the creation of active movable alignment appliances -called aligners- and other movable appliances for orthodontic treatment as well. The process is specific and distinct for each case and will be analyzed separately.

In our laboratory we use two types of digital scanners:

The first is the table type scanner, of the Korean company Medit (of the well-known Solutionix technology) Identica Hybrid which with the Blue Led technology and scanning precision at 7μm (ISO 12836), executes in 3 scanning axes a full scanning of an orthodontic model - mold or imprint in less than 20 seconds.

The second is the portable intraoral scanner Trios 3 Mono from Shape with the cabled Trios pen grip, with which a very quick scanning of the upper and lower bow is achieved, as well as specifying of occlusion and storage of the archives in a special system of internet communication and transfer (3Shape communicate) from which all the registered member users of the 3Shape system can exchange and transfer the stl files produced, directly for analysis of the data on their computers. With this process the fastest communication between the doctor’s practice and the laboratory is allowed without the extraction and transfer of footprints as well as the direct importing of the stl files into the software where the analysis of the case is made.

These files are imported for editing into the 3Shape Orthoanalyzer software, with which the following tasks are made:

1. Design and storage of digital study models (Digital Study Models)

2. Studies and measurements of orthodontic analyses and precise calculations (Orthodontic Analysis Services)

3. Treatment Planning Services

4. Complete Cad/Cam Workflows

5. Define and Simulate Tooth Movements

6. Study of occlusion with the use of 3D devices for 3D models display on fully adaptable articulators (Digital Articulators)

7. (Merge CT/CBCT data, scans, x-ray panoramics, cephalometric tracings and photos with digital study models)

8. Direct connection and communication, as well as transfer of scanned files via Trios scanning function (3Shape communicate services)

The modified stl files are taken for printing and then they are used for orthodontic manufactures of orthodontic appliances of various types.

Following the most modern needs of the technological advancement our laboratory is equipped with 3 types of printers:

1. Form Labs 2. Stereolithographic printer (SLA-MIT Technology) with use of photopolymer liquid resin materials (and Class IIa long-term biocompatible resin – Dental LT Clear Resin) of 25-100 microns precision.
2. Objet30 OrthoDesk. Inject printer from Stratasys with the use of very high-precision printing material Clear Bio-compatible (MED610).

F.N. Orthodontics always in view of the requests of our Orthodontist Doctor collaborators, is pioneering in all levels of digital Orthodontic technology and with certified specialized services, equipment and personnel is in a position to cover even the more specialized tasks and requests in the laboratory sector we represent.

For any further updates and presentations that we can perform in our premises for your personal information, please contact us and our specialized personnel will be pleased to introduce you to the digital technology knowledge paths.

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