In today’s dentistry, digital workflow is becoming unavoidable and even demanded by the patients directly. Within the past few years, we have seen an explosive growth in the number of digital workflow products which have been made increasing accessible to even small private practices.
No doubt, one of these digital solutions companies is Medit, with the creation of the i500 and i700, which has brought about a tremendous change for the dental industry. As there are an increasing number of players with intraoral scanner technology ready for commercialisation, how does one choose which scanners to buy to fit into their digital workflow?
One important factor is to look at the software support and innovation behind the scanner. Medit is one of the companies which continues to offer new software modules, free of charge, which allows the clinician maximum usage and incorporation of a full digital workflow into their practices. In this article, we will be discussing about the newly launched Model Builder which offers the clinical staff a simple solution to prepare the model for printing, allowing neater presentation to the patient and also better organising within the clinic.
Clear Aligner Treatments – TrioClear
Currently at the clinic, we are using TrioClearTM, a three-step clear aligner system used to treat malocclusions. This system utilises divots/dimple pressure spots, increased gingival coverage and soft/medium/hard thickness of clear aligners per step, allowing a gentle increase in pressure while using less attachments, thereby saving more clinical chair time.
For all patients, we would use the i700 to scan the patient’s dentition and send this to the laboratory for processing before printing the model with the proper orthodontic trimmings for full diagnosis. However, with the new Model Builder software, the staff at the clinic is able to very quickly apply the orthodontic base. Furthermore, we are able to customise the labels with the patient and clinic name before printing. This allows an excellent presentation model to the patient during communication of the treatment plan. The proper orthodontic base angles allow me the convenience when analysing the occlusal relationships between the maxillary and mandibular dentition. Below are some broken down clips highlighting the core steps in the Model Builder software to successfully convert a scan into a printable STL file.
Click on the Model Builder Icon and select the proper scan
Highlight which teeth you would like to include in the final STL file.
Select a few points on the model to allow alignment of the model with the base and occlusal plane.
Select the height of the base that you would like to print. Note that the base should be thick enough so a single model can stand on either angled base freely.
Depending on the purpose of the models, place the mandibular/maxilla stabiliser pins in the appropriate positions. For orthodontic models, the stabilisers (if any) should be placed at the back to avoid interfering with the model when standing on a certain trimmed angle.
You may label both the mandibular and maxilla models with patient name, clinic name etc…
Finally, export the file into a STL format for printing
Figure 1. Models are printed using any standard 3D printer
Figure 2. Finished orthodontic models with proper orthodontic base trimmings
Figure 3. Note that the height base should be thick enough to allow a single model to freely stand
Simple Surgical Stents
For simple surgical stents, the Model Builder again allows a very convenient way for the clinic staff to label the models and add the base to quickly generate the STL files for printing. We utilise some sort of a guide (either a manual surgical stent, pilot guide or full guide) for most implant placements. With a small printer and lab at the clinic, the optimal starting drilling position can easily be identified on the printed model. Note that the option to only print half of the base is available which avoids wastage of printing material. Fabrication of a simple surgical stent for proper initial positioning of the bur during implant placement become very simple. Again, the labels on the model allow us to clearly identify the patient with the corresponding surgical stent. Furthermore, this allows a better communication tool when presenting the use of surgical stents to the patient and also shows areas of bone deficiencies for explaining bone grafting procedures.
Figure 4. The desired initial implant drilling position is marked in red with the appropriately sized pontic and an occlusal hole in the center is placed.
Figure 5. After ensuring the red mark can be seen, a vacuum formed stent is fabricated to be used as the initial drill position guide.
Thank you to Dr. Chan for sharing this case study with us. Did you recently use Medit scanners for an interesting case yourself? Feel free to reach out and share them with us at firstname.lastname@example.org.