Scanning the last molar is often one of the most challenging tasks in intraoral scanning due to its deep position in the mouth and limited accessibility. However, with the precision and performance of the FormX Dental FX650 intraoral scanner, combined with the right technique, this task can be completed accurately and efficiently.
In this step-by-step guide, we’ll walk you through how to effectively scan the last molar.
Step 1: Prepare the Patient
Positioning: Seat the patient comfortably in the dental chair, with proper head support. Ask the patient to open their mouth wide to ensure full access to the last molar.
Lighting: Proper lighting is essential. Adjust the dental light to fully illuminate the back of the mouth where the last molar is located.
Dry the Area: Saliva can interfere with scanning accuracy. Use an air syringe or a saliva ejector to keep the area around the molar dry.
Step 2: Prepare the FormX FX650 Scanner
Check the Device: Ensure that the scanner is clean and properly connected to your system. A dirty scanner head can compromise image quality.
Launch the Software: Open the FormX scanning software on your computer and verify that the FX650 is recognized and ready to use.
Step 3: Start the Scanning Process
Scanner Positioning: Begin scanning from the second-to-last molar and smoothly move towards the last molar. This ensures a seamless transition and a complete scan.
Angle and Distance: Hold the scanner at the right angle to capture the occlusal surface of the molar. Maintain a consistent distance to avoid distortion or blurry images.
Steady Movement: Move the scanner slowly and steadily. Avoid abrupt or jerky motions. Be sure to capture all surfaces—occlusal, buccal, and lingual.
Step 4: Capture All Surfaces
Buccal Surface: Start by scanning the buccal (cheek-facing) surface. Angle the scanner from the gingival margin up to the occlusal surface.
Occlusal Surface: Then, move on to the occlusal (chewing) surface, ensuring that all grooves and cusps are clearly captured.
Lingual Surface: Lastly, scan the lingual (tongue-facing) surface. You may need to slightly adjust the patient’s head or use a cheek retractor for better access.
Step 5: Review the Scan
Check for Completeness: Carefully examine the scan to confirm that all surfaces of the last molar have been captured. Look for missing sections or any distortion.
Rescan if Needed: If any area is unclear or incomplete, you can simply rescan that specific part without having to start over, using the software’s add-on feature.
Step 6: Save and Process the Scan
Save the File: Once satisfied, save the scan with a clear and identifiable name.
Post-Processing: Use the software’s tools to enhance image quality, such as adjusting brightness, contrast, or filling minor gaps.
Export the Scan: Export the final scan in the required format—STL, OBJ, or PLY—for further use, such as CAD design or sending it to a dental lab.
Conclusion
Although scanning the last molar may seem complex, with practice and the advanced capabilities of the FormX FX650, it becomes a simple and routine part of digital dentistry. By following this guide, you can ensure accurate, high-quality scans that enhance both your workflow and patient satisfaction